WO2017081973A1 - Method for manufacturing and method for joining hollow structure - Google Patents

Method for manufacturing and method for joining hollow structure Download PDF

Info

Publication number
WO2017081973A1
WO2017081973A1 PCT/JP2016/080169 JP2016080169W WO2017081973A1 WO 2017081973 A1 WO2017081973 A1 WO 2017081973A1 JP 2016080169 W JP2016080169 W JP 2016080169W WO 2017081973 A1 WO2017081973 A1 WO 2017081973A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
section
hollow structure
connecting member
portions
Prior art date
Application number
PCT/JP2016/080169
Other languages
French (fr)
Japanese (ja)
Inventor
堀　久司
伸城 瀬尾
Original Assignee
日本軽金属株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2016001134A external-priority patent/JP2017121641A/en
Priority claimed from JP2016041703A external-priority patent/JP6728783B2/en
Application filed by 日本軽金属株式会社 filed Critical 日本軽金属株式会社
Priority to CN201680066827.XA priority Critical patent/CN108349041A/en
Publication of WO2017081973A1 publication Critical patent/WO2017081973A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding

Definitions

  • the present invention relates to a method for manufacturing a hollow structure by friction stir welding and a bonding method.
  • Patent Document 1 discloses a method for manufacturing a structure having a hollow section having a rectangular cross section.
  • the manufacturing method of the structure is such that after four corner members and four plate-like members connecting the corner members are butted, friction stir welding is performed on the butted portion.
  • the conventional technology has a problem that the manufacturing process becomes complicated because friction stir welding is performed from the inside and outside of the structure. In particular, it is difficult to perform friction stir welding from the inside of the structure.
  • the plate thickness is large, it is described that a concave portion and an auxiliary member that covers the concave portion are prepared in the butt portion, and the friction stir welding is performed in two stages in the plate thickness direction. There is a problem that increases and becomes complicated.
  • the manufacturing method of the hollow structure provided with the several hollow part is not indicated.
  • an object of the present invention is to provide a method for manufacturing a hollow structure that can easily manufacture a hollow structure including one or a plurality of hollow portions. Moreover, this invention makes it a subject to provide the joining method which can join easily the connection member and plate member which connect a some plate member.
  • the present invention is a method for manufacturing a metal hollow structure having a plurality of hollow portions having a rectangular cross section, and forms a plurality of plate-like members constituting the hollow portions.
  • the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured.
  • the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured.
  • the hollow structure provided with the hollow part of a some cross-sectional rectangle can be easily manufactured by combining a connection member and a plate-shaped member suitably.
  • the connecting member has any one of a T-shaped section, an L-shaped section, a U-shaped section, or an I-shaped section.
  • the friction stirring step it is preferable to perform friction stir welding in a state where the connecting member and the plate-like member are sandwiched between a pressing member that can apply a pressing force and a receiving member that is immovably restrained by a gantry. .
  • the present invention also relates to a method for producing a hollow metal structure having a plurality of hollow portions having a triangular cross section, a base portion having a plate shape and a pair of plate-like extensions extending obliquely from the base portion.
  • a friction stirring step of friction stir welding the abutting portions using a bobbin tool is a method for producing a hollow metal structure having a plurality of hollow portions having a triangular cross section, a base portion having a plate shape and a pair of plate-like extensions extending obliquely from the base portion.
  • the present invention also relates to a method for producing a hollow metal structure having a plurality of hollow portions having a triangular cross section, a base portion having a plate shape and a pair of plate-like extensions extending obliquely from the base portion.
  • a connecting member having a substantially K-shaped cross section having a mounting portion is formed by extrusion molding, and a preparation step for forming a plate-like member disposed between the adjacent connecting members, and a plurality of hollow portions having a triangular cross section are formed.
  • a butting step of butting each of the connecting members and each of the plate-like members to form a plurality of butt portions, and a friction stirring step of friction stir welding the butt portions using a bobbin tool It is characterized by that.
  • the present invention also relates to a method for manufacturing a hollow structure made of metal having a plurality of hollow portions having a triangular cross section, wherein a plurality of metal members are abutted to form a plurality of hollow portions having a triangular cross section.
  • the connecting member includes at least one or a plurality of extending portions, and the connecting member is preferably formed by extrusion molding.
  • the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured.
  • the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured.
  • the hollow structure provided with the hollow part of a some cross-sectional triangle can be easily manufactured by combining a connection member and a plate-shaped member suitably.
  • a plate-like member is disposed between the adjacent connecting members, and a butting portion is formed by the connecting member and the plate-like member.
  • the bobbin tool is used. It is preferable that the butt portion between the connecting member and the plate-like member is also friction stir welded. According to this manufacturing method, the degree of freedom in design can be increased.
  • this invention is a manufacturing method of the metal hollow structure provided with one hollow part of a cross-sectional rectangle, Comprising: A plurality of metal members are faced together so that one hollow part of a cross-sectional rectangle is formed.
  • the metal member constituting the hollow structure has a substantially U-shaped cross section including a butting step of forming a butt portion and a friction stirring step of friction stir welding the butt portions using a bobbin tool It includes at least one of a connecting member and a connecting member having a substantially L-shaped cross section, and the connecting member is formed by extrusion molding.
  • the present invention is a method for manufacturing a hollow structure made of metal having a plurality of hollow portions having a rectangular cross section, and a plurality of metal members are abutted to form a plurality of hollow portions having a rectangular cross section.
  • the metal member constituting the hollow structure has a substantially I-shaped cross section, or a friction stirring step of friction stir welding the abutting portions using a bobbin tool.
  • the connecting member is formed by extrusion molding.
  • the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured.
  • the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured.
  • a hollow structure provided with a hollow portion having a rectangular cross section can be easily manufactured by appropriately combining metal members.
  • the friction stir welding is performed in a state in which each metal member is sandwiched between a pressing member capable of applying a pressing force and a receiving member restrained so as not to move on the gantry.
  • a plurality of plates are formed by extrusion molding a connecting member including a plate-like base portion and one or more plate-like extension portions extending from at least one of the opposing side surfaces of the base portion.
  • the entire length in the height direction of the butt portion can be friction stir welded at a time, so that joining can be easily performed.
  • the connecting member is an extruded profile, a structure that is long in the extrusion direction can be easily manufactured.
  • the connecting member preferably has a K-shaped cross section, a T-shaped cross section, an I-shaped cross section, a cross-shaped cross section, or a radial cross section. Further, the thickness of any one of the both end portions of the base portion and the end portion of the extending portion may be formed to be different from the other plate thicknesses of the both end portions of the base portion and the end portion of the extending portion. preferable.
  • Such a joining method can increase the degree of freedom of design.
  • a hollow structure having one or more hollow portions can be easily produced.
  • the connection member which connects a some plate-shaped member, and a plate-shaped member can be joined easily.
  • the hollow structure 1 according to the present embodiment is a metal structure including hollow portions M and M having a rectangular cross section.
  • the following description “up and down”, “left and right”, and “front and back” follow the arrows in FIG. “Up / down”, “left / right”, and “front / back” do not limit the direction of the present invention.
  • the hollow structure 1 abuts the six connecting members 11 to 16 and the seven plate-like members 21 to 27 so as to form a hollow portion M having a rectangular cross section, and is integrally formed by friction stir welding.
  • the plate-like portions of the connecting members 11 to 16 and the plate-like members 21 to 27 have substantially the same thickness.
  • the connecting member 11 is an extruded shape having a T-shaped cross section.
  • the connecting member 11 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
  • the connecting member 11 includes a plate-like base portion 11a and a plate-like extension portion 11b extending vertically from the center of the base portion 11a.
  • the connecting members 12 to 16 have the same shape as the connecting member 11.
  • the connecting members 12 to 16 are each composed of a base portion (12a to 16a) and an extending portion (12b to 16b).
  • the connecting members 11 to 16 have a shape capable of connecting three plate-like members. Further, the connecting members 12 and 15 are disposed across the hollow portions M and M.
  • the plate-like members 21 to 27 are plate-like members made of metal capable of friction stirring.
  • the plate-like members 21 to 27 are formed of the same material as that of the connecting member 11 in this embodiment.
  • the plate member 21 is disposed between the connecting members 11 and 12.
  • the plate member 22 is disposed between the connecting members 12 and 13.
  • the plate member 23 is disposed between the connecting members 11 and 14.
  • the plate-like member 24 is disposed between the connecting members 12 and 15.
  • the plate member 25 is disposed between the connecting members 13 and 16.
  • the plate-like members 23, 24 and 25 are perpendicular to the plate-like members 21 and 22.
  • the plate member 26 is disposed between the connecting members 14 and 15.
  • the plate member 27 is disposed between the connecting members 15 and 16.
  • the plate members 26 and 27 are parallel (substantially parallel) to the plate members 21 and 22.
  • a plasticized region W is formed at each abutting portion between the end face of each part of each connecting member 11 to 16 and the end face of each plate-like member 21 to 27.
  • the bobbin tool 31 is used in the method for manufacturing a hollow structure according to the present embodiment.
  • the bobbin tool 31 includes a lower shoulder 32, an upper shoulder 33, and a pin 34 that connects the lower shoulder 32 and the upper shoulder 33.
  • the lower shoulder 32 includes a large-diameter portion 32a that has a cylindrical shape, a tapered portion 32b that decreases in diameter from the large-diameter portion 32a toward the pin 34, and a flat end portion 32c.
  • the upper shoulder 33 includes a large-diameter portion 33a that has a cylindrical shape, a tapered portion 33b that decreases in diameter from the large-diameter portion 33a toward the pin 34, and a flat end portion 33c.
  • the pin 34 has a cylindrical shape. A spiral groove is engraved around the pin 34.
  • the bobbin tool 31 is attached to a machining center or a robot arm having a rotating means such as a spindle unit at the tip.
  • a rotating means such as a spindle unit at the tip.
  • the first step according to the first embodiment is a step of joining the connecting member 12 and the plate-like member 24.
  • a butting process and a friction stirring process are performed.
  • the fixing jig used in the first process includes a receiving member H, an intermediate member N, a pressing member P, and an intermediate member Q.
  • the receiving member H is a metal member having an L-shaped cross section, and is fixed to the gantry T so as not to move.
  • the intermediate member N is a member having an L-shaped cross section, and is disposed between the receiving member H and the plate-like member 24.
  • the intermediate member N is composed of a base portion N1 and a rising portion N2 that rises from the base portion N1.
  • the plate thickness of the base portion N1 is the same as the overhang length L1 of the base portion 12a.
  • a clamp K for fixing the plate-like member 24 is provided on the end face of the rising portion N2 of the intermediate member N.
  • the pressing member P is fixed to the gantry T at a position facing the receiving member H.
  • the pressing member P is, for example, a vise and a member that applies a pressing force in the direction of the receiving member H.
  • a plurality of pressing members P are installed in the longitudinal direction of the intermediate member Q.
  • the intermediate member Q is a plate-like member disposed between the pressing member P and the connecting member 12.
  • the end surface 12d of the extending portion 12b and the end surface 24a of the plate-like member 24 are butted while the end surface 12d of the base portion 12a of the connecting member 12 is brought into contact with the gantry T.
  • matching part J1 is formed.
  • the end surface 24b of the plate-like member 24 is brought into contact with the side surface N2a of the rising portion N2, while the side surface 24c of the plate-like member 24 is brought into contact with the upper surface N1a of the base portion N1.
  • a pressing force is applied by the pressing member P to restrain the connecting member 12 and the plate member 24 so as not to move.
  • the bobbin tool 31 is used to perform friction stir welding so that the butt portion J1 is traced in the front-rear direction.
  • the length of the pin 34 (distance between shoulders) is slightly shorter than the plate thickness of the extending portion 12 b and the plate thickness of the plate-like member 24.
  • the friction stir welding is performed while the flat end portions 32c and 33c (see FIG. 2) slightly enter the butting portion J1.
  • a plasticized region W (see FIG. 4) is formed on the movement trajectory of the bobbin tool 31.
  • the second step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 24 as shown in FIG.
  • a butting process and a friction stirring process are performed.
  • the end surface 15 c of the extending portion 15 b and the end surface 24 b of the plate-like member 24 are butted while the end surface 15 c of the base portion 15 a of the connecting member 15 is brought into contact with the gantry T.
  • matching part J2 is formed.
  • An intermediate member Q is installed between the connecting member 12 and the receiving member H, and an intermediate member Q is installed between the connecting member 15 and the pressing member P. Further, a pressing force is applied by the pressing member P to restrain the connecting member 15, the already connected connecting member 12 and the plate-like member 24 so as not to move.
  • the butt joint J2 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
  • an I-shaped member 42 having a substantially I-shaped cross section is formed. Note that the first step is omitted, and the connecting members 12 and 15 and the plate-like member 24 are immovably restrained as in the second step shown in FIG. 4, and friction stir welding is performed on the butted portions J1 and J2. May be.
  • I-shaped members 41 and 43 (see FIG. 1) having the same shape as the I-shaped member 42 are also created in the same manner as the first step and the second step.
  • the I-shaped members 41, 42, 43 are members that extend in the vertical direction of the hollow structure 1.
  • the third step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 27 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-shaped member 27.
  • a butting step and a friction stirring step are performed.
  • the fixing jig used in the third step includes a receiving member H, intermediate members RA and RB, and a pressing member P.
  • the intermediate members RA and RB are configured by a main body portion R1 having a plate shape and overhang portions R2 and R2 projecting from the main body portion R1 in the vertical direction.
  • the overhang length of the overhang portion R2 is equal to the plate thickness of the plate member 27 and the plate thickness of the base portions 12a and 15a.
  • the intermediate member RA is installed between the receiving member H and the plate member 27.
  • the intermediate member RB is installed between the pressing member P and the I-shaped member 42.
  • the end surface 15d of the base portion 15a of the connecting member 15 and the end surface 27a of the plate-like member 27 are butted.
  • matching part J3 is formed.
  • the base portion 12a of the connecting member 12 and the base portion 15a of the connecting member 15 are brought into contact with the upper and lower step portions of the intermediate member RB, respectively, and the protruding portion on the upper surface of the end surface 27b of the plate-like member 27 and the other intermediate member RA. R2 is brought into contact. Further, while the plate member 27 is fixed by the clamp K, a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate member 27 so as not to move.
  • the butt joint J3 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
  • the fourth step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 26 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-shaped member 26.
  • a butt process and a friction stirring process are performed.
  • the fixing jig used in the fourth step is the same as that in the third step according to the first embodiment.
  • the end surface 15c of the base portion 15a of the connecting member 15 and the end surface 26b of the plate-like member 26 are butted. Thereby, the butt
  • the end surface 26a of the plate-like member 26 is brought into contact with the upper overhanging portion R2 of the intermediate member RB. Further, while the plate member 26 is fixed by the clamp K, a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate members 26 and 27 so as not to move.
  • the butt joint J4 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
  • the fifth step according to the first embodiment is a step of joining the connecting member 12 and the plate-like member 21 and joining the connecting member 12 and the plate-like member 22 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-like member 22 and joining the I-shaped member 42 and the plate-like member 22 together.
  • a butting step and a friction stirring step are performed in the fifth step according to the first embodiment.
  • the fixing jig used in the fifth step is the same as the third step according to the first embodiment.
  • the end surface 12c of the base portion 12a of the connecting member 12 and the end surface 21b of the plate-like member 21 are butted.
  • matching part J5 is formed.
  • the end surface 21a of the plate-like member 21 is brought into contact with the upper overhanging portion R2 of the intermediate member RA.
  • the end surface 12 d of the base portion 12 a of the connecting member 12 and the end surface 22 a of the plate-like member 22 are butted together.
  • matching part J6 is formed.
  • the end surface 22b of the plate-like member 22 is brought into contact with the overhanging portion R2 on the upper side of the intermediate member RB.
  • the end surface 27b of the plate-like member 27 and the lower protruding portion R2 of the intermediate member RB are brought into contact with the end surface 26a of the plate-like member 26 and the lower protruding portion R2 of the intermediate member RA.
  • the plate members 21 and 22 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate members 21 and 22 so that they cannot move.
  • the butt portions J5 and J6 are friction agitated and joined using the bobbin tool 31 in the same manner as the first friction agitation step.
  • the sixth step according to the first embodiment is a step of joining the connecting member 11 and the plate-like member 21 and joining the connecting member 13 and the plate-like member 22 as shown in FIG. In other words, it is a step of joining the I-shaped member 41 and the plate-shaped member 21 created in advance, and joining the I-shaped member 43 and the plate-shaped member 22 created in advance.
  • a butting step and a friction stirring step are performed in the sixth step according to the first embodiment.
  • the fixing jig used in the sixth step is the same as that in the third step according to the first embodiment.
  • the end surface 11d of the base portion 11a of the connecting member 11 and the end surface 21a of the plate-like member 21 are butted.
  • matching part J7 is formed.
  • the end surface 11c of the base portion 11a of the connecting member 11 is brought into contact with the overhanging portion R2 on the upper side of the intermediate member RA.
  • the end surface 13 c of the base portion 13 a of the connecting member 13 and the end surface 22 b of the plate-like member 22 are butted together.
  • matching part J8 is formed.
  • the end surface 13d of the base portion 13a of the connecting member 13 is brought into contact with the overhanging portion R2 on the upper side of the other intermediate member RB.
  • the end surface 14d of the base portion 16a of the connecting member 16 and the lower protruding portion of the intermediate member RB are brought into contact with the end surface 14c of the base portion 14a of the connecting member 14 and the lower protruding portion R2 of the intermediate member RA. R2 is brought into contact.
  • the fixing members 11 and 13 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to restrain the plate-like members 21 and 22 and the I-shaped members 41 and 43 so that they cannot move.
  • the end surface 14d of the base portion 14a of the connecting member 14 and the end surface 26a of the plate-like member 26 are abutted to form the abutting portion J9. Further, the end surface 16c of the base portion 16a of the connecting member 16 and the end surface 27b of the plate-like member 27 are abutted to form a butted portion J10.
  • the butt joints J7 and J8 are friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring.
  • the seventh step according to the first embodiment will be described with reference to FIG.
  • the connecting member 14 and the plate-like member 26 are joined, and the connecting member 16 and the plate-like member 27 are joined.
  • the I-shaped member 41 and the plate-like member 26 are joined, and the I-shaped member 43 and the plate-like member 27 are joined.
  • a butting step and a friction stirring step are performed.
  • the fixing jig used in the seventh step is the same as that in the third step according to the first embodiment.
  • the metal member to be joined is turned upside down, and the metal member to be joined is restrained by a fixing jig in the same manner as in the sixth step.
  • the friction stirring step of the seventh step the butt joints J9 and J10 are friction stir welded using the bobbin tool 31 in the same manner as in the first step.
  • the hollow structure 1 including the hollow portions M and M is formed.
  • the entire length in the height direction of each butt portion J1 to J10 can be friction stir welded at a time by using the bobbin tool 31, so that the hollow structure 1 can be easily manufactured. Further, since the connecting members 11 to 16 are extruded shapes, the hollow structure 1 that is long in the extrusion direction can be easily manufactured.
  • the friction stir welding is performed in a state where the connecting members 11 to 16 and the plate-like members 21 to 27 are sandwiched between the pressing member P and the receiving member H restrained immovably on the mount T. Is preferred. Thereby, the opening of each butt portion can be prevented in the friction stirring step.
  • each step can be made easier.
  • the hollow structure 1 including two hollow portions M is formed, but the number of the hollow portions may be one or three or more.
  • the connecting member is formed in a T-shaped cross section, but the corner portion may have an L-shaped cross section.
  • the connecting member may have a cross shape (cross shape) in cross section.
  • the hollow structure can be formed by adding the hollow parts in the vertical direction and the left-right direction of the hollow part M of the hollow structure 1 shown in FIG. That is, by appropriately combining the connecting member and the plate-like member, a hollow structure having a plurality of rectangular hollow portions can be easily manufactured.
  • a backing material S may be used when performing the friction stirring step.
  • the height dimension of the backing material S is the same as the sum of the height dimension of the extending portions 12 b and 15 b and the height dimension of the plate-like member 24.
  • the backing material may be used by appropriately setting the height dimension in the second to fifth steps.
  • the manufacturing method of an above described hollow structure is an example, Comprising: This invention is not limited.
  • first step, a second step, a third step, a fourth step, and a fifth step are performed. Since the first step to the third step according to the second embodiment are substantially the same as the first step to the third step of the first embodiment, description thereof is omitted.
  • the fourth step according to the second embodiment is a step of forming a U-shaped member 44 as shown in FIG.
  • the fixing jig used in the fourth step includes a receiving member H, intermediate members NA and NB, and a pressing member P.
  • a butt process and a friction stirring process are performed.
  • the connecting member 17 has a plate-like base portion 17a and a plate-like extension portion 17b extending vertically from the end of the base portion 17a, and has an L-shaped cross section.
  • the connecting member 18 has a plate-like base portion 18a and a plate-like extension portion 18b extending vertically from the end of the base portion 18a, and has an L-shaped cross section.
  • the connecting member 17 and the plate-like member 23 are abutted, and the connecting member 18 and the plate-like member 23 are abutted. More specifically, the end surface 17d of the extending portion 17b of the connecting member 17 and the end surface 23a of the plate-like member 23 are abutted to form the abutting portion J11, and the end surface 18d of the extending portion 18b of the connecting member 18 and the plate-like member are formed.
  • the butt portion J12 is formed by abutting the end surface 23b of the butt 23.
  • the connecting member 17 and the intermediate member NA are brought into contact with each other, and the connecting member 18 and the intermediate member NB are brought into contact with each other. Then, a pressing force is applied by the pressing member P to restrain the connecting members 17 and 18 and the plate-like member 23 from moving.
  • the abutting portions J11 and J12 are friction stir welded using the bobbin tool 31 in the same manner as in the first embodiment.
  • the backing material S may be used as necessary.
  • the fifth step according to the second embodiment is a step of joining the connecting member 18 and the plate-like member 26 as shown in FIG. In other words, it is a step of joining the U-shaped member 44 and the plate-shaped member 26 together.
  • a butting step and a friction stirring step are performed.
  • the fixing jig used in the fifth step includes a receiving member H, an intermediate member RA, an intermediate member Q, and a pressing member P.
  • the end face 18c of the base 18a of the connecting member 18 and the end face 26b of the plate-like member 26 are butted. Thereby, the butt
  • the U-shaped member 44, the I-shaped member 42, and the plate-shaped member 26 are restrained to be immovable by applying a pressing force with the pressing member P while fixing the connecting member 15 with the clamps K, K.
  • the butt joint J13 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
  • explanation is omitted.
  • the above-described method for manufacturing a hollow structure according to the second embodiment can provide substantially the same effect as that of the first embodiment.
  • the corner portions constituting the hollow portion may be the connecting members 17 and 18 having an L-shaped cross section.
  • the hollow structure 101 according to the third embodiment includes two connecting members 102 and 102 having a U-shaped cross section, a connecting member 103 having an I-shaped cross section, and four plate-like members 104. It consists of and.
  • the hollow structure 101 is formed with hollow portions M and M having a rectangular cross section with the connecting member 103 interposed therebetween.
  • the connecting member 102 includes a base portion 102a having a plate shape, and a pair of plate-like extension portions 102b and 102c extending perpendicularly to the base portion 102a from both ends of the base portion 102a.
  • the connecting member 102 is an extruded shape formed by extrusion molding.
  • the connecting member 103 includes a base portion 103a having a plate shape and a pair of plate-like extension portions 103b and 103c extending perpendicularly to the base portion 103a from both ends of the base portion 103a.
  • the connecting member 103 is an extruded shape formed by extrusion molding.
  • the extending portions 103b and 103c project on both sides of the base portion 103a.
  • the left pair of plate-like members 104, 104 are arranged between the left connecting member 102 and the connecting member 103.
  • the pair of right plate members 104 and 104 are disposed between the right connecting member 102 and the connecting member 103.
  • the plate thickness of the plate-like member 104 is equal to the plate thickness of each extending portion 102b, 102c, 103b, 103c.
  • a butt process and a friction stirring process are performed.
  • the connecting members 102 and 103 and the plate-like member 104 are butted. Specifically, the end surface 102 d of the extending portion 102 b of the left connecting member 102 and the end surface 104 b of the plate-like member 104 are abutted against each other. Thereby, the butt
  • the left end surface 103g of the extending portion 103b of the connecting member 103 and the end face 104a of the plate-like member 104 are butted. Thereby, the butt
  • each member is clamped and restrained so as not to move by using a fixing jig (not shown) including the receiving member and the pressing member.
  • the abutting portions J111 to J118 are friction stir welded using the bobbin tool 31 in substantially the same manner as the friction stir process of the first process according to the first embodiment.
  • the above-described method for manufacturing a hollow structure according to the third embodiment can also provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the third embodiment, it is possible to easily form the hollow structure 101 including the hollow portions M and M having a rectangular cross section. Moreover, the hollow structure 101 can be formed with a small number of parts by using the connecting members 102 and 102 having a U-shaped cross section and using the connecting member 103 having an I-shaped cross section.
  • connection member 102 may comprise the connection member 102 by a pair of connection member which exhibits cross-sectional L shape, for example.
  • the connecting member 103 may be constituted by a pair of connecting members having a T-shaped cross section, for example.
  • the plate-like member 104 may be omitted, and the connecting members 102, 102, 103 may be directly joined together to form a hollow structure including two hollow portions M, M.
  • the hollow structure 111 according to the fourth embodiment includes three connection members 103 having an I-shaped cross section and four plate-like members 104.
  • the hollow structure 111 is formed with hollow portions M and M having a rectangular cross section with the central connecting member 103 interposed therebetween.
  • a butt process and a friction stirring process are performed.
  • the end faces of the three connecting members 103 having an I-shaped cross section and the four plate-like members are butted in the same manner as in the third embodiment.
  • matching part J121, J122, J123, J124, J125, J126, J127, J128 is formed.
  • each member is clamped using a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
  • the abutting portions J121 to J128 are friction stir welded using the bobbin tool 31 in substantially the same manner as the friction stir process of the first process according to the first embodiment.
  • the above-described method for manufacturing a hollow structure according to the fourth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the fourth embodiment, it is possible to easily form the hollow structure 111 including the hollow portions M and M having a rectangular cross section. Moreover, the hollow structure 111 can be formed with a small number of parts by using the connecting member 103 having three I-shaped cross sections.
  • connection member 103 may be comprised with a pair of connection member which exhibits cross-sectional T shape, for example.
  • the plate-like member 104 may be omitted, and the three connecting members 103 may be directly joined together to form a hollow structure including two hollow portions M and M having a rectangular cross section.
  • connection members having a T-shaped section, an L-shaped section, a U-shaped section, or an I-shaped section is connected.
  • a hollow structure including a hollow portion having a rectangular cross section can be easily formed using the member.
  • size of a hollow structure can be suitably changed by connecting a plate-shaped member as needed.
  • the hollow structure (double skin panel) 1A according to the fifth embodiment is composed of a plurality of connecting members 19 and a plurality of plate-like members 46 to 48.
  • the hollow structure 1A includes a plurality of hollow portions M1 having a triangular cross section (isosceles triangle). The adjacent hollow portions M1, M1 are formed so as to be upside down.
  • the connecting member 19 includes a plate-like base portion 19a and a pair of plate-like extending portions 19b and 19c extending obliquely from one side surface of the base portion 19a. .
  • the connecting member 19 is an extruded shape formed by extrusion.
  • the first step, the second step, the third step, and the fourth step are performed.
  • the first step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 46 arranged on the lower side.
  • a butting process and a friction stirring process are performed.
  • the end surface 19 d of the base 19 a of the connecting member 19 and the end surface 46 b of the plate-like member 46 are butted. Thereby, the butt
  • the butt joints J21 and J22 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment. .
  • the second step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 47 arranged on the lower side.
  • a butting step and a friction stirring step are performed.
  • the end surface 19 f of the extending portion 19 b of the connecting member 19 and the end surface 47 a of the plate-like member 47 are butted.
  • matching part J23 is formed.
  • the end surface 19 g of the extending portion 19 c of the connecting member 19 and the end surface 47 a of the plate-like member 47 are butted. Thereby, the butt
  • the butt joints J23 and J24 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment. .
  • the third step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 47 arranged on the upper side as shown in FIG.
  • a butting step and a friction stirring step are performed.
  • the end surface 19 f of the extending portion 19 b of the connecting member 19 and the end surface 47 b of the plate-like member 47 are butted.
  • matching part J25 is formed.
  • the end surface 19 g of the extending portion 19 c of the connecting member 19 and the end surface 47 b of the plate-like member 47 are butted. Thereby, the butt
  • the friction stirring step of the third step according to the fifth embodiment is performed in the same manner, and the abutting portions J25 and J26 are friction stir welded using the bobbin tool 31. .
  • the fourth step according to the fifth embodiment is a step of joining the connecting member 19 and the plate member 48 arranged on the upper side.
  • a butting step and a friction stirring step are performed.
  • the end surface 19 d of the base portion 19 a of the connecting member 19 and the end surface 48 a of the plate-like member 48 are butted.
  • matching part J27 is formed.
  • the end surface 19 e of the base portion 19 a of the connecting member 19 and the end surface 48 b of the plate-like member 48 are butted.
  • matching part J28 is formed.
  • the friction stirring step of the fourth step according to the fifth embodiment is performed in the same manner, and the abutting portions J27 and J28 are friction stir welded using the bobbin tool 31. .
  • the above-described method for manufacturing the hollow structure according to the fifth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the fifth embodiment, it is possible to easily form a hollow structure (double skin panel) 1A having a hollow portion having a triangular cross section.
  • a hollow structure (double skin panel) 1B according to a modification of the fifth embodiment includes a plurality of connecting members 19 disposed on the lower side and a plurality of plate-like members 46, 47, 48. It consists of The hollow structure 1B includes a plurality of hollow portions M1 having a cross-sectional triangle (isosceles triangle).
  • the hollow structure 1B is different from the hollow structure 1A of the fifth embodiment in that the end surface 47b of the plate-like member 47 is in contact with the back surface of the plate-like member 48.
  • the modified example of the fifth embodiment is different from the fifth embodiment in that the connecting member 19 is not disposed on the upper side of the hollow structure 1B.
  • the method for manufacturing a hollow structure according to the modification of the fifth embodiment includes a first step, a second step, and a third step. Since the first step and the second step according to the modification are the same as the first step and the second step according to the fifth embodiment described above, description thereof is omitted.
  • the third step according to the modification of the fifth embodiment is a step of joining the pair of plate members 47 and 47 and the pair of plate members 48 and 48 together.
  • a butt step and a friction stirring step are performed.
  • the end surface 48 a of the plate-like member 48 and the end surface 48 b of the plate-like member 48 are butted.
  • the end surfaces 47b of the pair of plate members 47 are butted against the back surfaces of the plate members 48 and 48, and the side end surfaces 47c and 47c of the pair of plate members 47 are butted together.
  • the side end face 47c is perpendicular to the end face 47b.
  • the plate-like member 47 is cut obliquely so that the end surface 47b is in surface contact with the back surface of the plate-like member 48, and is cut so that the side end surface 47c is formed.
  • the pair of plate-like members 48 (48a, 48b), the pair of plate-like members 47 (47c, 47c), the pair of plate-like members 47 (47b), and the pair of plate-like members.
  • the member 48 (the back surface of the plate-like member 48) is abutted with each other to form the abutting portion J30.
  • the friction stir process according to the modified example of the fifth embodiment is a process of friction stir welding each butt portion J30 using the bobbin tool 31.
  • the flat end portion 32c (see FIG. 2) of the lower shoulder 32 of the bobbin tool 31 is brought into contact with the plate-like members 47 and 47, and the flat end portion 33c of the upper shoulder 33 is brought into contact with the plate-like members 48 and 48. Friction stir welding is performed. Thereby, the plate-shaped members 47, 47, 48, 48 are joined.
  • the lower shoulder 32 of the bobbin tool 31 may be made smaller than the upper shoulder 33 as necessary.
  • the plate-like members 47, 47, the plate-like members 48, 48, and further, the plate-like members 47, 48 can be friction stir welded at a time, Work efficiency can be increased.
  • the connecting member 19 is used on the lower side of the hollow structure 1B. However, the lower connecting member 19 may be omitted, and the friction stir welding may be performed in the same manner as the upper side. .
  • the hollow structure (double skin panel) 121 according to the sixth embodiment includes a plurality of hollow portions M ⁇ b> 1 having a triangular cross section (isosceles triangle). Adjacent hollow portions M1, M1 are formed to be upside down.
  • the hollow structure 121 is different from the hollow structure 1A of the fifth embodiment in that it does not include a plate-like member.
  • a butt process and a friction stirring process are performed.
  • the adjacent connecting members 19 and 19 are butted continuously up and down. Specifically, the end surface 19d of the base portion 19a of the connecting member 19 disposed on the lower side is abutted against the end surface 19e of the adjacent base portion 19a. Thereby, the butt
  • the end surface 19f of the extending portion 19b of the connecting member 19 disposed on the lower side is abutted against the end surface 19f of the extending portion 19b of the connecting member 19 disposed on the upper side.
  • matching part J122 is formed.
  • the end surface 19g of the extending portion 19c of the connecting member 19 disposed on the lower side is abutted against the end surface 19g of the extending portion 19c of the connecting member 19 disposed on the upper side.
  • matching part J122 is formed.
  • positioned at the upper side and the end surface 19e of the adjacent base part 19a are faced
  • a plurality of butted portions J120, J121, and J122 are formed by continuously butting the plurality of connecting members 19 up and down.
  • the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
  • the butt portions J120, J121, J122 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
  • a hollow structure (double skin panel) 121 including a hollow portion that has a triangular cross-section by connecting the connection member 19 without using a plate-like member is provided. It can be formed easily.
  • the hollow structure 1 ⁇ / b> C according to the seventh embodiment includes a plurality (four) of connecting members 51, a plurality of plate-like members 52, 53, 55, 56, two corner members 54, It consists of
  • the hollow structure 1C includes a plurality of hollow portions M3 having a triangular cross section (right triangle).
  • the hollow portions M3 and M3 that are adjacent to each other in the vertical direction are formed to have a rectangular cross section.
  • the connecting member 51 includes a base 51a having a plate shape, a plate-like extension 51b extending vertically from one side of the base 51a, and a diagonal from one side of the base 51a. And a plate-like extending portion 51c extending in the direction. That is, the extending part 51c is extended obliquely from the inner corners of the base part 51a and the extending part 51b.
  • the connecting member 51 is an extruded shape member formed by extrusion molding.
  • the four connecting members 51 shown in FIG. 19 have the same shape.
  • the connection members 51A, 51B, 51C, and 51D are identified with reference numerals.
  • the first step, the second step, the third step, the fourth step, and the fifth step are performed.
  • the first step according to the seventh embodiment is a step of joining the connecting members 51, 51 and the plate-like member 52.
  • a butting process and a friction stirring process are performed.
  • the end surface 51g of the extending portion 51c of the connecting member 51A and the end surface 52a of the plate-like member 52 are butted as shown in FIG. Thereby, the butt
  • the butt portions J51 and J52 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
  • the second step according to the seventh embodiment is a step of joining the connecting member 51 and the plate-like member 53.
  • a butting process and a friction stirring process are performed.
  • the end surface 51f of the extending portion 51b of the connecting member 51A and the end surface 53a of the plate-like member 53 are butted as shown in FIG. Thereby, the butt
  • the end face 51f of the extending portion 51b of the connecting member 51B and the end face 53b of the plate-like member 53 are butted. Thereby, the butt
  • the butt joints J53 and J54 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
  • the third step according to the seventh embodiment is a step of joining the plate member 53 and the corner member 54 and joining the plate member 53 and the connecting member 51C.
  • a butting step and a friction stirring step are performed.
  • the corner member 54 includes a plate-like base portion 54a and an extending portion 54b extending perpendicularly from one side surface of the base portion 54a.
  • the end surface 53b of the plate-like member 53 and the end surface 54e of the extending portion 54b of the corner member 54 are butted. Thereby, the butt
  • the end surface 53a of the plate-like member 53 and the end surface 51f of the extending portion 51b of the connecting member 51C are butted. Thereby, the butt
  • the butt portions J55 and J56 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
  • the fourth step of the seventh embodiment is a step of joining the connecting members 51A and 51C and the plate-like member 55.
  • a butt process and a friction stirring process are performed.
  • the end surface 55a of the plate-like member 55 and the end surface 51d of the base portion 51a of the connecting member 51A are butted. Thereby, the butt
  • the end surface 55b of the plate-like member 55 and the end surface 51e of the base portion 51a of the connecting member 51C are butted. Thereby, the butt
  • the friction stirring step of the fourth step according to the seventh embodiment is performed in the same manner, and the abutting portions J57 and J58 are friction stir welded using the bobbin tool 31. .
  • the fifth step according to the seventh embodiment is a step of joining the connecting member 51B, the corner member 54, and the plate-like member 56.
  • a butting step and a friction stirring step are performed.
  • the end surface 51d of the base 51a of the connecting member 51B and the end surface 56a of the plate-like member 56 are butted together. Thereby, the butt
  • the end surface 54c of the base 54a of the corner member 54 and the end surface 56b of the plate-like member 56 are butted. Thereby, the butt
  • the butt joints J59 and J60 are friction agitation joined using the bobbin tool 31 in the same manner as the first friction agitation step according to the first embodiment.
  • a hollow structure having two hollow portions M3 and M3 was formed in the first process to the fifth process, but the first process to the fifth process are arranged on the right side of the hollow structure.
  • the hollow structure 1C shown in FIG. 19 is formed.
  • the above-described method for manufacturing the hollow structure according to the seventh embodiment can provide substantially the same effect as that of the first embodiment.
  • the plate-like member 52 disposed obliquely in the hollow structure 1C is connected by the connecting members 51, 51, and the square members 54, 54 are used. Good.
  • the hollow structure 131 according to the eighth embodiment includes two connecting members 132 and 133.
  • the hollow structure 131 includes a plurality of hollow portions M3 having a triangular cross section (right triangle).
  • the hollow portions M3 and M3 that are adjacent to each other in the vertical direction are formed to have a rectangular cross section.
  • the connecting member 132 includes a base portion 132a having a plate shape, a plate-like extension portion 132b extending perpendicularly to the base portion 132a from one end side of the base portion 132a, and a base portion 132a perpendicular to the other end side.
  • the plate-like extension portion 132c is extended, and the plate-like extension portion 132d is formed to extend obliquely from between the base portion 132a and the extension portion 132b.
  • the connecting member 132 is an extruded shape member formed by extrusion molding.
  • the connecting member 133 has the same shape as the connecting member 132.
  • the connecting member 133 includes a plate-like base portion 133a, a plate-like extension portion 133b extending perpendicularly to the base portion 133a from one end side of the base portion 133a, and a base portion 133a perpendicular to the other end side.
  • the plate-shaped extending portion 133c is extended, and the plate-shaped extending portion 133d is extended obliquely from between the extended portion 133b and the base portion 133a.
  • the connecting member 133 is an extruded shape member formed by extrusion molding.
  • a butt process and a friction stirring process are performed.
  • the end surfaces of the connecting member 132 and the connecting member 133 are butted.
  • the end surface 132e of the extending portion 132b and the end surface 133e of the connecting member 133 are abutted against each other.
  • matching part J131 is formed.
  • the end surface 132f of the extending part 132c and the end surface 133f of the extending part 133b are abutted.
  • matching part J132 is formed.
  • the end surface 132g of the extended part 132d and the end surface 133g of the extended part 133d are abutted. Thereby, the butt
  • the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
  • the butt joints J131, J132, J133 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
  • the above-described method for manufacturing the hollow structure according to the eighth embodiment can provide substantially the same effect as that of the first embodiment.
  • the hollow structure 131 including the hollow portions M3 and M3 having a triangular cross section can be easily formed.
  • the hollow structure 131 can be formed with a small number of parts.
  • the hollow structure 141 according to the ninth embodiment includes two connecting members 142, 142, two L-shaped connecting members 143, 143, and a plate-like member 144. ing.
  • the connecting member 142 includes a plate-like base 142a, a plate-like extension 142b extending perpendicularly to the base 142a, and a plate-like extension extending obliquely between the base 142a and the extension 142b.
  • the connecting member 142 is an extruded shape member formed by extrusion molding.
  • the connecting member 143 includes a plate-like base portion 143a and an extending portion 143b extending perpendicular to the base portion 143a.
  • the connecting member 143 is an extruded shape member formed by extrusion molding.
  • a butt process and a friction stirring process are performed.
  • the end faces of the connecting members 142 and 142, the connecting members 143 and 143, and the plate member 144 are butted.
  • the end surface 142d of the base 142a of the lower connecting member 142 and the end surface 143c of the base 143a of the lower connecting member 143 are abutted against each other.
  • matching part J141 is formed.
  • the end surface 142f of the extending portion 142b of the lower connecting member 142 and the end surface 143d of the extending portion 143b of the upper connecting member 143 are brought into contact with each other. Thereby, the butt
  • a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
  • the butt portions J141, J141, J142, J142, J143, and J143 are formed using the bobbin tool 31 in the same manner as the friction stirring process of the first process according to the first embodiment. Friction stir welding.
  • the hollow structure manufacturing method according to the ninth embodiment described above can provide substantially the same effect as the first embodiment. According to the method for manufacturing a hollow structure according to the ninth embodiment, the hollow structure 141 including the hollow portions M3 and M3 having a triangular cross section can be easily formed.
  • the hollow structure 151 according to the tenth embodiment includes two connecting members 152 and 152 and three plate-like members 153.
  • the connecting member 152 includes a plate-like base portion 152a, a plate-like extension portion 152b extending from one end of the base portion 152a, a plate-like extension portion 152c extending from the other end, and a base portion 152a. It is comprised by the plate-shaped extension part 152d extended diagonally from between the installation parts 152c.
  • the connecting member 152 is an extruded shape member formed by extrusion molding.
  • a butt process and a friction stirring process are performed.
  • two connecting members 152 and three plate-like members 153 are butted.
  • the end surface 152e of the extending portion 152b of the right connecting member 152 and the end surface 153b of the plate-like member 153 are abutted against each other.
  • matching part J151 is formed.
  • the end surface 152 f of the extending portion 152 c of the right connection member 152 and the end surface 153 b of the plate-like member 153 are abutted against each other.
  • matching part J152 is formed.
  • the end surface 152g of the extending portion 152d of the right connection member 152 and the end surface 153b of the plate-like member 153 are brought into contact with each other. Thereby, the butt
  • the left connecting member 152 and the three plate-like members 153 are abutted to form the abutting portions J151, J152, and J153.
  • each member is clamped using a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
  • the abutting portions J151, J152, and J153 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
  • the above-described method for manufacturing the hollow structure according to the tenth embodiment can provide substantially the same effect as that of the first embodiment.
  • the hollow structure 151 including the hollow portions M3 and M3 having a triangular cross section can be easily formed.
  • a hollow portion having a triangular section is provided using a connecting member having a K-shaped section, an L-shaped section, a T-shaped section, or the like.
  • a hollow structure can be easily formed.
  • size of a hollow structure can be suitably changed by connecting a plate-shaped member as needed.
  • the connecting member 61 includes a plate-like base portion 61a, a pair of plate-like extending portions 61b and 61c extending obliquely from one side surface of the base portion 61a, and a plate-like shape extending obliquely from the other side surface. And a pair of extending portions 61d and 61e.
  • the connecting member 61 is formed radially in front view.
  • the connecting member 61 is an extruded shape member formed by extrusion molding.
  • a 1st process is a process of joining the base 61a and the plate-shaped members 71 and 71.
  • FIG. In the first process according to the eleventh embodiment, a butt process and a friction stirring process are performed.
  • the end surface 61f of the base portion 61a and the end surface 71a of the plate-like member 71 are butted.
  • the end surface 61 i of the base portion 61 a and the end surface 71 a of the plate-like member 71 are abutted against each other. Thereby, the butt
  • the butt portions J71 and J72 are friction stir welded using the bobbin tool 31 in the same manner as the first step of the friction stir step according to the first embodiment.
  • the second step according to the eleventh embodiment is a step of joining the extending portions 61b, 61c, 61d, 61e and the respective plate members 71.
  • a butting step and a friction stirring step are performed.
  • the end surface 61g of the extending portion 61b and the end surface 71a of the plate-like member 71 are butted. Thereby, the butt
  • the butt portions J74, J75, and J76 are formed by the same procedure.
  • the friction stirring step of the first step according to the first embodiment is performed in the same manner, and the butted portions J73 to J76 are friction stir welded using the bobbin tool 31. To do.
  • the connecting member 61 capable of connecting three or more plate-like members and the plurality of plate-like members can be easily joined.
  • the connecting member 15A includes a plate-like base portion 15a and an extending portion 15b extending vertically from the base portion 15a.
  • the plate thickness dimension of the end surface 15d of the base portion 15a is smaller than the plate thickness dimension of the end surface 15e. That is, the end surface 15d side of the base portion 15a is gradually thinner toward the tip.
  • the end surface 27Aa of the plate-like member 27A has the same thickness as the end surface 15d.
  • the abutting portion J3A is formed by abutting the end surface 15d of the base portion 15a with the end surface 27Aa of the plate-like member 27A.
  • each of the butted portions J2, J4, J3A using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
  • Friction stir welding When friction stir welding is performed on the butted portion J3A, it is preferable to reduce the distance between the shoulders of the bobbin tool 31 and perform the friction stir welding so that the flat end portions 32c and 33c enter the butted portion J3A.
  • the plate thickness of the end portion (end surface) of the connecting member 15A is smaller (thinner) than the plate thickness of the end portion of the other part. It may be.
  • the thickness of any one of the both end portions of the base portion 15a and the end portion of the extending portion 15b is different from the other plate thicknesses of both end portions of the base portion 15a and the end portion of the extending portion 15b. Also good.
  • the connecting member 15 and the plate-like member 27 in the hollow structure 1 shown in FIG. 1 may be replaced with the connecting member 15A and the plate-like member 27A.
  • the connecting member having a radial cross section or a T-shape is illustrated, but the connecting member according to the joining method may be an I-shaped cross section, a K-shaped cross section, or It is sufficient that at least three plate-like members such as a cross-shaped cross (cross-shaped) can be connected.
  • the hollow structure 201 according to this embodiment is a metal structure including one hollow portion M having a rectangular cross section.
  • “up and down”, “left and right”, and “front and back” follow the arrows in FIG. “Up / down”, “left / right”, and “front / back” do not limit the direction of the present invention.
  • the hollow structure 201 abuts the four connecting members (metal members) 211 to 214 and the four plate-like members (metal members) 221 to 224 so that a hollow portion M having a rectangular cross section is formed. It is integrally formed. That is, the hollow structure 201 is formed by combining a plurality of metal members.
  • the plate-like portions of the connecting members 211 to 214 and the plate thicknesses of the plate-like members 221 to 224 are substantially the same.
  • the connecting member 211 is an extruded shape having an L-shaped cross section.
  • the connecting member 211 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
  • the connecting member 211 includes a plate-like base portion 211a and a plate-like extension portion 211b that extends vertically from the end of the base portion 211a.
  • the connecting members 212 to 214 have the same shape as the connecting member 211.
  • the connecting members 212 to 214 each include a base portion (212a to 214a) and an extending portion (212b to 214b).
  • the connecting members 211 to 214 have a shape capable of connecting two plate-like members.
  • the plate-like members 221 to 224 are formed of a metal capable of friction stir and have a plate shape.
  • the plate-like members 221 to 224 are formed of the same material as that of the connecting member 211 in this embodiment.
  • the plate member 221 is disposed between the connecting members 211 and 212.
  • the plate-like member 222 is disposed between the connecting members 211 and 213.
  • the plate member 223 is disposed between the connecting members 212 and 214.
  • the plate member 224 is disposed between the connecting members 213 and 214.
  • a method for manufacturing the hollow structure according to this embodiment will be described. As shown in FIG. 30, in the method for manufacturing a hollow structure according to the present embodiment, a bobbin tool 31 (see also FIG. 2) is used.
  • the first step according to this embodiment is a step of joining the connecting members 211 and 213 and the plate-like member 222. In other words, it is a step of forming the U-shaped member 241.
  • a butt process and a friction stirring process are performed.
  • the fixing jig used in the first process includes a receiving member H, intermediate members NA and NB, and a pressing member P.
  • the receiving member H is a metal member having an L-shaped cross section, and is fixed to the gantry T so as not to move.
  • the intermediate member NA is a member having an L-shaped cross section, and is disposed between the receiving member H and the connecting member 211.
  • the intermediate member NA includes a base portion N1 and a rising portion N2 that rises from the base portion N1. On the end surface of the rising portion N2 of the intermediate member N, a clamp K for fixing the connecting member 211 is provided.
  • the intermediate member NB is a member having an L-shaped cross section, and is disposed between the pressing member P and the connecting member 213.
  • the intermediate member NB includes a base portion N1 and a rising portion N2 that rises from the base portion N1. On the end surface of the rising portion N2 of the intermediate member N, a clamp K for fixing the connecting member 213 is provided.
  • the thickness of the base portion N1 is larger than the height dimension of the lower shoulder 32 so that the bobbin tool 31 can be relatively moved.
  • the pressing member P is fixed to the gantry T at a position facing the receiving member H.
  • the pressing member P is, for example, a vise and a member that applies a pressing force in the direction of the receiving member H.
  • a plurality of pressing members P are provided in the longitudinal direction of the intermediate member NB.
  • the connecting member 211 and the plate member 222 are butted together, and the connecting member 213 and the plate member 222 are butted. More specifically, the end surface 211d of the extending portion 211b of the connecting member 211 and the end surface 222a of the plate-like member 222 are abutted to form a butt portion J211 and the end surface 213d of the extending portion 213b of the connecting member 213 and the plate-like member The end face 222b of 222 is abutted to form the abutting portion J212. Further, the connecting member 211 and the intermediate member NA are brought into contact with each other, and the connecting member 213 and the intermediate member NB are brought into contact with each other. Then, a pressing force is applied by the pressing member P to restrain the connecting members 211 and 213 and the plate-like member 222 from moving.
  • the bobbin tool 31 is used to perform friction stir welding so that the butt J211 is traced in the front-rear direction.
  • the length of the pin 34 (distance between shoulders) is slightly shorter than the plate thickness of the extending portion 211 b and the plate thickness of the plate-like member 222.
  • the friction stir welding is performed while the flat end portions 32c and 33c (see FIG. 2) slightly enter the butting portion J211.
  • a plasticized region W is formed in the movement locus of the bobbin tool 31.
  • friction stir welding is performed on the butting portion J212 in the same manner as the butting portion J211.
  • the second step according to the present embodiment is a step of joining the connecting members 212 and 214 and the plate-like member 223 as shown in FIG. In other words, it is a process of forming the U-shaped member 242. In the second process according to the present embodiment, a butt process and a friction stirring process are performed. In the second step according to this embodiment, the U-shaped member 242 is formed in the same manner as the first step.
  • the third step and the fourth step according to this embodiment are performed in parallel.
  • the third step according to this embodiment is a step of joining the connecting members 213 and 214 and the plate-like member 224 as shown in FIG. In other words, it is a step of joining the U-shaped members 241 and 242 and the plate-like member 224 together.
  • the fourth step according to the present embodiment is a step of joining the connecting members 211 and 212 and the plate member 221. In other words, it is a process of joining the U-shaped members 241 and 242 and the plate-shaped member 221 together.
  • the jig used in the third step and the fourth step according to this embodiment uses a receiving member H, a pressing member P, and intermediate members QA and QB. Clamps K and K are formed on end surfaces of the intermediate members QA and QB, respectively.
  • the intermediate member QA is a plate-like member disposed between the pressing member P and the U-shaped member 241.
  • the intermediate member QB is a member disposed between the receiving member H and the U-shaped member 242.
  • a butting step and a friction stirring step are performed.
  • the end surface 213c of the base portion 213a of the connecting member 213 and the end surface 224b of the plate-like member 224 are butted.
  • matching part J217 is formed.
  • the end face 214c of the base 214a of the connecting member 214 and the end face 224a of the plate-like member 224 are butted.
  • matching part J218 is formed.
  • the connecting members 213 and 214 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P so that the U-shaped members 241 and 242 and the plate-like member 224 To be immovable.
  • the fourth matching process according to the present embodiment is also performed in parallel.
  • the end surface 211c of the base portion 211a of the connecting member 211 and the end surface 221b of the plate-like member 221 are butted as shown in FIG. Thereby, the butt
  • the end surface 212c of the base portion 212a of the connecting member 212 and the end surface 221a of the plate-like member 221 are butted. As a result, a butt J216 is formed.
  • the butt joints J217 and J218 are respectively friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
  • the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig.
  • the butt joints J215 and J216 are each friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring.
  • the hollow structure 201 of FIG. 29 is formed by the above process.
  • each butt portion J211 to J218 can be friction stir welded at a time by using the bobbin tool 31, so that the hollow structure 201 can be easily manufactured.
  • the connecting members 211 to 214 are extrusion shaped members, the hollow structure 201 that is long in the extrusion direction can be easily manufactured.
  • the friction stir welding is performed in a state where the connecting members 211 to 214 and the plate-like members 221 to 224 are sandwiched between the pressing member P and the receiving member H, respectively. Thereby, the opening of each butt portion can be prevented in the friction stirring step.
  • a backing material S may be used when performing the friction stirring step.
  • the friction stirring process can be performed stably.
  • the manufacturing method of an above described hollow structure is an example, Comprising: This invention is not limited.
  • a hollow structure 201A according to this embodiment is different from the twelfth embodiment in that connection members 251 and 252 having a U-shape are integrally formed.
  • the hollow structure 201A is formed by abutting two connecting members 251 and 252 and two plate-like members 253 and 254 so that a hollow portion M having a rectangular cross section is formed, and is integrally formed by friction stir welding.
  • the plate-like portions of the connecting members 251 and 252 and the plate-like members 253 and 254 have substantially the same thickness.
  • the connecting member 251 is an extruded shape having a U-shaped cross section.
  • the connecting member 251 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
  • the connecting member 251 includes a plate-like base portion 251a and plate-like extending portions 251b and 251c extending vertically from both ends of the base portion 251a.
  • the connecting member 252 has the same shape as the connecting member 251.
  • the connecting member 252 includes a base 252a and extending portions 252b and 252c.
  • the connecting members 251 and 252 have a shape capable of connecting two plate-like members.
  • the first step and the second step are performed.
  • the first step and the second step are performed in parallel.
  • the first step according to the present embodiment is a step of joining the connecting members 251 and 252 and the plate member 254 as shown in FIG.
  • the second step according to the present embodiment is a step of joining the connecting members 251 and 252 and the plate member 253.
  • the jig used in the first step and the second step according to this embodiment uses a receiving member H, a pressing member P, and intermediate members QA and QB. Clamps K and K are formed on end surfaces of the intermediate members QA and QB, respectively.
  • the intermediate member QA is a plate-like member disposed between the pressing member P and the connecting member 251.
  • the intermediate member QB is a member disposed between the receiving member H and the connecting member 252.
  • a butting step and a friction stirring step are performed.
  • the end surface 251e of the extending portion 251c of the connecting member 251 and the end surface 254b of the plate-like member 254 are butted.
  • matching part J223 is formed.
  • the end face 252e of the extending portion 252c of the connecting member 252 and the end face 254a of the plate-like member 254 are butted.
  • matching part J224 is formed.
  • the connecting members 251 and 252 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to move the connecting members 251 and 252 and the plate-like member 254. Restrained impossible.
  • the second matching process according to the present embodiment is also performed in parallel.
  • the end surface 251d of the extending portion 251b of the connecting member 251 and the end surface 253b of the plate-like member 253 are butted.
  • matching part J221 is formed.
  • the end face 252d of the extending portion 252b of the connecting member 252 and the end face 253a of the plate-like member 253 are butted. As a result, a butt J222 is formed.
  • the butt portions J223 and J224 are respectively formed using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment.
  • Friction stir welding When the friction stirring step of the first step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig.
  • the abutting portions J221 and J222 are friction stir welded using the bobbin tool 31 in the same manner as in the first step of friction stirring.
  • the hollow structure 201A of FIG. 32 is formed by the above process.
  • the bobbin tool 31 can be used to frictionally stir weld the entire length in the height direction of each butt portion J221 to J224 at a time.
  • 201A can be manufactured easily.
  • the connecting members 251 and 252 are extruded profiles, it is possible to easily manufacture the hollow structure 201A that is long in the extrusion direction.
  • the hollow structure 201 ⁇ / b> A can be formed with a small number of parts.
  • hollow structure and the method for manufacturing the hollow structure according to the twelfth embodiment and the thirteenth embodiment of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention.
  • a connecting member (metal member) exhibiting a substantially U-shaped cross-section and a connecting member (metal member) exhibiting a substantially L-shaped cross section is combined to provide a hollow section having a single rectangular cross section.
  • a connecting member (metal member) having a substantially U-shaped cross section, a connecting member (metal member) exhibiting a substantially L-shaped cross section, and a plate-like member (metal member) are combined, You may form the hollow structure of the other form provided with the hollow part of one cross-sectional rectangle.
  • the hollow structure 201 ⁇ / b> B according to the fourteenth embodiment has two rectangular rectangular hollow portions M and M, and uses a connecting member 261 having an I-shaped cross section. This is different from the twelfth embodiment.
  • the hollow structure 201B has two connecting members 251 and 252, four plate-like members 253, 253, 254, and 254 and the connecting member 261 butted together so that hollow portions M and M having a rectangular cross section are formed, It is integrally formed by friction stir welding.
  • the plate-like portions of the connecting members 251, 252, and 261 and the plate-like members 253 and 254 have substantially the same thickness.
  • the connecting member (metal member) 261 is an extruded shape having an I-shaped cross section.
  • the connecting member 261 is formed of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
  • the connecting member 261 includes a plate-like base portion 261a and plate-like extending portions 261b and 261c extending from both ends of the base portion 261a to both sides in the width direction.
  • the connecting member 261 has a shape capable of connecting four plate-like members.
  • the connecting member 261 is disposed so as to separate the adjacent hollow portions M and M.
  • the first step, the second step, the third step, and the fourth step are performed.
  • the first step and the second step are performed in parallel.
  • the first step according to this embodiment is a step of joining the connecting member 251, the plate-like member 254, and the connecting member 261 as shown in FIG.
  • the second step according to this embodiment is a step of joining the connecting member 251, the plate-like member 253, and the connecting member 261.
  • the jig used in the first step and the second step according to the present embodiment uses a receiving member H, a pressing member P, an intermediate member QA, and an intermediate member RA. Clamps K are formed at the ends of the intermediate members QA and RA, respectively.
  • the intermediate member QA is a member disposed between the pressing member P and the connecting member 251.
  • the intermediate member RA is a member disposed between the receiving member H and the connecting member 261.
  • the intermediate member RA is constituted by a main body portion R1 having a plate shape and overhang portions R2 and R2 projecting from the main body portion R1 in the vertical direction. Since the plate
  • the overhang length of the overhang portion R2 is equal to the plate thickness of the plate-like members 253 and 254 and the plate thickness of the extending portions 261b and 261c.
  • a butting step and a friction stirring step are performed.
  • the end surface 251e of the extending portion 251c of the connecting member 251 and the end surface 254b of the plate-like member 254 are butted.
  • matching part J233 is formed.
  • the end face 261f of the extending portion 261c of the connecting member 261 and the end face 254a of the plate-like member 254 are butted.
  • matching part J234 is formed.
  • the connecting members 251 and 261 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to move the connecting members 251 and 261 and the plate-like member 254. Restrained impossible.
  • the second matching process according to the present embodiment is also performed in parallel.
  • the end surface 251d of the extending portion 251b of the connecting member 251 and the end surface 253b of the plate-like member 253 are butted.
  • matching part J321 is formed.
  • the end face 261d of the extending portion 261b of the connecting member 261 and the end face 253a of the plate-like member 253 are butted. Thereby, the butt portion J232 is formed.
  • the butt portions J233 and J234 are formed using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment. Each is friction stir welded.
  • the friction stirring step of the first step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig.
  • the butt joints J231 and J232 are friction stir welded using the bobbin tool 31 in the same manner as the first step.
  • the third step according to the present embodiment is a step of joining the connecting members 252 and 261 and the plate member 254 as shown in FIG.
  • the fourth step according to the present embodiment is a step of joining the connecting members 252 and 261 and the plate member 253.
  • the jig used in the third step and the fourth step according to the present embodiment uses the receiving member H, the pressing member P, and the intermediate members QA and QB.
  • a butting step and a friction stirring step are performed.
  • the end surface 261g of the extending portion 261c of the connecting member 261 and the end surface 254b of the plate-like member 254 are butted.
  • matching part J237 is formed.
  • the end face 252d of the extending portion 252c of the connecting member 252 and the end face 254a of the plate-like member 254 are butted.
  • matching part J238 is formed.
  • the connecting members 251 and 252 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to connect the connecting members 251, 252, 261 and the plate-like members 253. Restrain 254 to be immovable.
  • the fourth matching process according to the present embodiment is also performed in parallel.
  • the end surface 261e of the extending portion 261b of the connecting member 261 and the end surface 253b of the plate-like member 253 are butted.
  • matching part J235 is formed.
  • the end surface 252d of the extending portion 252b of the connecting member 252 and the end surface 253a of the plate-like member 253 are butted.
  • matching part J236 is formed.
  • the butt joints J237 and J238 are respectively friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the twelfth embodiment.
  • the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig.
  • the butt joints J235 and J236 are each friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring.
  • the hollow structure 201B of FIG. 34 is formed by the above process.
  • the bobbin tool 31 can be used to frictionally stir weld the entire length in the height direction of each butt portion J231 to J238 at a time.
  • 201B can be manufactured easily. Further, since the connecting members 251, 252, and 261 are extruded shapes, the hollow structure 201B that is long in the extrusion direction can be easily manufactured. Further, by using the connecting members 251, 252, and 261, the hollow structure 201B having a plurality of hollow portions M can be formed with a small number of parts.
  • a hollow structure 201C according to the fifteenth embodiment is formed by connecting members (metal members) 271 and 271 having a T-shaped cross section in an I-shaped member 281 separating the hollow portions M and M.
  • the fifteenth embodiment will be described with a focus on differences from the fourteenth embodiment.
  • the connecting member 271 is an extruded shape member having a T-shaped cross section.
  • the connecting member 271 includes a base portion 271a and an extending portion 271b extending vertically from the center of the base portion 271a.
  • the connecting member 271 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
  • an I-shaped member 281 is formed.
  • matching process and a friction stirring process are performed.
  • the end surface 271c of the extending portion 271b of one connecting member 271 and the end surface 271c of the extending portion 271b of the other connecting member 271 are butted to form a butting portion J241.
  • friction stir welding is performed on the butt joint J241 using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment.
  • the steps after the step of forming the I-shaped member 281 are the same as those in the fourteenth embodiment, and thus the description thereof is omitted.
  • the I-shaped member 281 disposed between the hollow portions M and M may be composed of a plurality of connecting members 271 and 271 as in the method for manufacturing a hollow structure according to the present embodiment. Even if it does in this way, there can exist an effect substantially equivalent to 14th embodiment.
  • hollow structure and the manufacturing method of the hollow structure according to the fourteenth embodiment and the fifteenth embodiment of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention.
  • a hollow structure having three or more hollow portions M by providing a plurality of I-shaped connecting members 261 (see FIG. 35) or I-shaped members 281 may be formed.
  • connection member having a substantially I-shaped cross section or a pair of substantially T-shaped cross sections and forming an adjacent hollow portion
  • a connection member metal member exhibiting a substantially U-shaped cross section
  • a hollow structure including a plurality of hollow portions may be formed by combining at least one of the connecting members (metal members) having a substantially L-shaped cross section.
  • it includes a connecting member (metal member) and a plate-like member (metal member) that form a substantially hollow I-shaped section or a pair of substantially T-shaped cross sections and constitute adjacent hollow portions, and have a substantially U-shaped cross section.
  • a hollow structure including a plurality of hollow portions may be formed by combining at least one of a connecting member (metal member) to be presented and a connecting member (metal member) having a substantially L-shaped cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

A method for manufacturing a hollow structure (1) made of metal and provided with a plurality of hollow parts (M, M) rectangular in cross section, the method characterized by including a preparation step for molding a plurality of plate-shaped members (21)-(27) constituting part of the hollow parts (M), and molding, by extrusion molding, a plurality of connecting members (11)-(16) constituting part of corners of the hollow parts (M) and connecting at least two of the plate-shaped members (21)-(27); an abutting step for butting together the plate-shaped members (21)-(27) and the connecting members (11)-(16) so that the hollow parts (M) rectangular in cross section are formed, and forming a plurality of abutting parts; and a friction stirring step for friction-stir-joining the abutting parts using a bobbin tool.

Description

中空構造物の製造方法及び接合方法Manufacturing method and joining method of hollow structure
　本発明は、摩擦攪拌接合による中空構造物の製造方法及び接合方法に関する。 The present invention relates to a method for manufacturing a hollow structure by friction stir welding and a bonding method.
　特許文献１には、断面矩形の中空部を備えた構造物の製造方法が開示されている。当該構造物の製造方法は、四つの角部材と、角部材同士を繋ぐ四つの板状部材とを突き合わせた後、突合せ部に対して摩擦攪拌接合を行うというものである。 Patent Document 1 discloses a method for manufacturing a structure having a hollow section having a rectangular cross section. The manufacturing method of the structure is such that after four corner members and four plate-like members connecting the corner members are butted, friction stir welding is performed on the butted portion.
特開２００９－１４８８１１号公報JP 2009-148811 A
　従来技術であると、構造物の内側及び外側から摩擦攪拌接合を行うため、製造工程が煩雑になるという問題がある。特に、構造物の内側から摩擦攪拌接合を行う作業は困難となる。また、板厚が大きい場合は、突合せ部に凹部と当該凹部を覆う補助部材とを用意し、板厚方向に二段階で摩擦攪拌接合を行うことが記載されているが、摩擦攪拌接合の工程が増えて煩雑になるという問題がある。また、従来技術では、複数の中空部を備えた中空構造物の製造方法については開示されていない。 The conventional technology has a problem that the manufacturing process becomes complicated because friction stir welding is performed from the inside and outside of the structure. In particular, it is difficult to perform friction stir welding from the inside of the structure. In addition, when the plate thickness is large, it is described that a concave portion and an auxiliary member that covers the concave portion are prepared in the butt portion, and the friction stir welding is performed in two stages in the plate thickness direction. There is a problem that increases and becomes complicated. Moreover, in the prior art, the manufacturing method of the hollow structure provided with the several hollow part is not indicated.
　このような観点から、本発明は、１つ又は複数の中空部を備えた中空構造物を容易に製造することができる中空構造物の製造方法を提供することを課題とする。また、本発明は、複数の板状部材を連結する連結部材と板状部材とを容易に接合することができる接合方法を提供することを課題とする。 From such a viewpoint, an object of the present invention is to provide a method for manufacturing a hollow structure that can easily manufacture a hollow structure including one or a plurality of hollow portions. Moreover, this invention makes it a subject to provide the joining method which can join easily the connection member and plate member which connect a some plate member.
　このような課題を解決するために本発明は、断面矩形の複数の中空部を備えた金属製の中空構造物の製造方法であって、前記中空部を構成する複数の板状部材を成形するとともに、前記中空部の角部を構成し少なくとも二つ以上の前記板状部材を連結する複数の連結部材を押出成形によって成形する準備工程と、断面矩形の中空部が形成されるように各前記板状部材と各前記連結部材とを突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする。 In order to solve such a problem, the present invention is a method for manufacturing a metal hollow structure having a plurality of hollow portions having a rectangular cross section, and forms a plurality of plate-like members constituting the hollow portions. In addition, a preparation step of forming a plurality of connecting members that constitute corner portions of the hollow portions and connect at least two of the plate-like members by extrusion molding, and each of the above so that a hollow portion having a rectangular cross section is formed. It includes a butting process in which a plate-like member and each of the connecting members are butted together to form a plurality of butting parts, and a friction stirring process in which each of the butting parts is friction stir welded using a bobbin tool.
　かかる製造方法によれば、ボビンツールを用いることで、突合せ部の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物を容易に製造することができる。また、連結部材は、押出形材であるため、押し出し方向に長い中空構造物を容易に製造することができる。さらに、連結部材及び板状部材を適宜組み合わせることで、複数の断面矩形の中空部を備えた中空構造物を容易に製造することができる。 According to this manufacturing method, by using the bobbin tool, the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured. In addition, since the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured. Furthermore, the hollow structure provided with the hollow part of a some cross-sectional rectangle can be easily manufactured by combining a connection member and a plate-shaped member suitably.
　また、前記連結部材は、断面Ｔ字状、断面Ｌ字状、断面Ｕ字状又は断面Ｉ字状のいずれかを呈することが好ましい。 Further, it is preferable that the connecting member has any one of a T-shaped section, an L-shaped section, a U-shaped section, or an I-shaped section.
　また、前記摩擦攪拌工程では、押圧力を付与できる押圧部材と架台に移動不能に拘束された受け部材とで、前記連結部材及び前記板状部材を挟持した状態で摩擦攪拌接合を行うことが好ましい。 Further, in the friction stirring step, it is preferable to perform friction stir welding in a state where the connecting member and the plate-like member are sandwiched between a pressing member that can apply a pressing force and a receiving member that is immovably restrained by a gantry. .
　かかる製造方法によれば、各突合せ部の目開きを防ぐとともに、摩擦攪拌工程を安定して行うことができる。 According to this manufacturing method, it is possible to prevent the opening of each butt portion and to stably perform the friction stirring step.
　また、本発明は、断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、板状を呈する基部及び前記基部から斜めに延設された一対の板状の延設部を有する断面略Ｋ字状の連結部材を押出成形によって成形する準備工程と、断面三角形の複数の中空部が形成されるように各前記連結部材を突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする。
　また、本発明は、断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、板状を呈する基部及び前記基部から斜めに延設された一対の板状の延設部を有する断面略Ｋ字状の連結部材を押出成形によって成形するとともに、隣り合う前記連結部材の間に配置される板状部材を成形する準備工程と、断面三角形の複数の中空部が形成されるように各前記連結部材と各前記板状部材とを突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする。
　また、本発明は、断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、断面三角形の複数の中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、前記金属部材は、板状の基部と、前記基部から延設された単数又は複数の延設部とを少なくとも有する連結部材で構成されており、前記連結部材を押出成形によって成形することが好ましい。 The present invention also relates to a method for producing a hollow metal structure having a plurality of hollow portions having a triangular cross section, a base portion having a plate shape and a pair of plate-like extensions extending obliquely from the base portion. A preparatory step of forming a connecting member having a substantially K-shaped cross-section having an installation portion by extrusion molding, and a butt forming a plurality of butted portions by abutting each of the connecting members so as to form a plurality of hollow portions having a triangular cross section And a friction stirring step of friction stir welding the abutting portions using a bobbin tool.
The present invention also relates to a method for producing a hollow metal structure having a plurality of hollow portions having a triangular cross section, a base portion having a plate shape and a pair of plate-like extensions extending obliquely from the base portion. A connecting member having a substantially K-shaped cross section having a mounting portion is formed by extrusion molding, and a preparation step for forming a plate-like member disposed between the adjacent connecting members, and a plurality of hollow portions having a triangular cross section are formed. A butting step of butting each of the connecting members and each of the plate-like members to form a plurality of butt portions, and a friction stirring step of friction stir welding the butt portions using a bobbin tool. It is characterized by that.
The present invention also relates to a method for manufacturing a hollow structure made of metal having a plurality of hollow portions having a triangular cross section, wherein a plurality of metal members are abutted to form a plurality of hollow portions having a triangular cross section. A butting step for forming a butting portion and a friction stirring step for friction stir welding each of the butting portions using a bobbin tool, wherein the metal member is extended from the base portion. Preferably, the connecting member includes at least one or a plurality of extending portions, and the connecting member is preferably formed by extrusion molding.
　かかる製造方法によれば、ボビンツールを用いることで、突合せ部の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物を容易に製造することができる。また、連結部材は、押出形材であるため、押し出し方向に長い中空構造物を容易に製造することができる。さらに、連結部材及び板状部材を適宜組み合わせることで、複数の断面三角形の中空部を備えた中空構造物を容易に製造することができる。 According to this manufacturing method, by using the bobbin tool, the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured. In addition, since the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured. Furthermore, the hollow structure provided with the hollow part of a some cross-sectional triangle can be easily manufactured by combining a connection member and a plate-shaped member suitably.
　また、前記突合せ工程では、隣り合う前記連結部材の間に板状部材を配置するとともに、前記連結部材と前記板状部材とで突合せ部を形成し、前記摩擦攪拌工程では、前記ボビンツールを用いて前記連結部材と前記板状部材との突合せ部も摩擦攪拌接合することが好ましい。かかる製造方法によれば、設計の自由度を高めることができる。 In the butting step, a plate-like member is disposed between the adjacent connecting members, and a butting portion is formed by the connecting member and the plate-like member. In the friction stirring step, the bobbin tool is used. It is preferable that the butt portion between the connecting member and the plate-like member is also friction stir welded. According to this manufacturing method, the degree of freedom in design can be increased.
　また本発明は、断面矩形の１つの中空部を備えた金属製の中空構造物の製造方法であって、断面矩形の１つの中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、前記中空構造物を構成する前記金属部材は、断面略Ｕ字状を呈する連結部材及び断面略Ｌ字状を呈する連結部材の少なくともいずれかを含み、前記連結部材を押し出し成形で成形することを特徴とする。
　また、本発明は、断面矩形の複数の中空部を備えた金属製の中空構造物の製造方法であって、断面矩形の複数の中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、前記中空構造物を構成する前記金属部材は、断面略Ｉ字状又は一対の断面略Ｔ字状を呈し隣接する前記中空部を構成する連結部材を含むとともに、断面略Ｕ字状を呈する連結部材及び断面略Ｌ字状を呈する連結部材の少なくともいずれかを含み、前記連結部材を押し出し成形で成形することを特徴とする。 Moreover, this invention is a manufacturing method of the metal hollow structure provided with one hollow part of a cross-sectional rectangle, Comprising: A plurality of metal members are faced together so that one hollow part of a cross-sectional rectangle is formed. The metal member constituting the hollow structure has a substantially U-shaped cross section including a butting step of forming a butt portion and a friction stirring step of friction stir welding the butt portions using a bobbin tool It includes at least one of a connecting member and a connecting member having a substantially L-shaped cross section, and the connecting member is formed by extrusion molding.
In addition, the present invention is a method for manufacturing a hollow structure made of metal having a plurality of hollow portions having a rectangular cross section, and a plurality of metal members are abutted to form a plurality of hollow portions having a rectangular cross section. The metal member constituting the hollow structure has a substantially I-shaped cross section, or a friction stirring step of friction stir welding the abutting portions using a bobbin tool. Including a connecting member that forms a pair of substantially T-shaped cross-sections and constitutes the adjacent hollow portion, and includes at least one of a connecting member that exhibits a substantially U-shaped cross-section and a connecting member that exhibits a substantially L-shaped cross-section, The connecting member is formed by extrusion molding.
　かかる製造方法によれば、ボビンツールを用いることで、突合せ部の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物を容易に製造することができる。また、連結部材は、押出形材であるため、押し出し方向に長い中空構造物を容易に製造することができる。さらに、金属部材を適宜組み合わせることで、断面矩形の中空部を備えた中空構造物を容易に製造することができる。 According to this manufacturing method, by using the bobbin tool, the entire length in the height direction of the butt portion can be friction stir welded at a time, so that a hollow structure can be easily manufactured. In addition, since the connecting member is an extruded profile, a hollow structure that is long in the extrusion direction can be easily manufactured. Furthermore, a hollow structure provided with a hollow portion having a rectangular cross section can be easily manufactured by appropriately combining metal members.
　また、前記摩擦攪拌工程では、押圧力を付与できる押圧部材と架台に移動不能に拘束された受け部材とで、各前記金属部材を挟持した状態で摩擦攪拌接合を行うことが好ましい。 Further, in the friction stirring step, it is preferable that the friction stir welding is performed in a state in which each metal member is sandwiched between a pressing member capable of applying a pressing force and a receiving member restrained so as not to move on the gantry.
　かかる製造方法によれば、各突合せ部の目開きを防ぐとともに、摩擦攪拌工程を安定して行うことができる。 According to this manufacturing method, it is possible to prevent the opening of each butt portion and to stably perform the friction stirring step.
　また、板状の基部及び前記基部の対向する両側面のうちの少なくとも一方から延設された単数又は複数の板状の延設部を備えた連結部材を押出成形によって成形するとともに、複数の板状部材を成形する準備工程と、前記延設部の端面と前記板状部材の端面とを突き合わせて複数の突合せ部を形成する突合せ工程と、ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする。 In addition, a plurality of plates are formed by extrusion molding a connecting member including a plate-like base portion and one or more plate-like extension portions extending from at least one of the opposing side surfaces of the base portion. A preparatory step of forming a member, a butting step of butting the end surface of the extending portion and the end surface of the plate member to form a plurality of butting portions, and friction stir welding of the butting portions using a bobbin tool And a friction stirring step.
　かかる接合方法によれば、ボビンツールを用いることで、突合せ部の高さ方向の全長を一度に摩擦攪拌接合できるため、容易に接合することができる。また、連結部材は、押出形材であるため、押し出し方向に長い構造物を容易に製造することができる。 According to such a joining method, by using the bobbin tool, the entire length in the height direction of the butt portion can be friction stir welded at a time, so that joining can be easily performed. In addition, since the connecting member is an extruded profile, a structure that is long in the extrusion direction can be easily manufactured.
　また、前記連結部材は、断面Ｋ字状、断面Ｔ字状、断面Ｉ字状、断面クロス状又は断面放射状を呈することが好ましい。さらに、前記基部の両端部及び前記延設部の端部のいずれか一つの板厚が、前記基部の両端部及び前記延設部の端部の他の板厚と異なるように成形することが好ましい。 The connecting member preferably has a K-shaped cross section, a T-shaped cross section, an I-shaped cross section, a cross-shaped cross section, or a radial cross section. Further, the thickness of any one of the both end portions of the base portion and the end portion of the extending portion may be formed to be different from the other plate thicknesses of the both end portions of the base portion and the end portion of the extending portion. preferable.
　かかる接合方法によれば、設計の自由度を高めることができる。 Such a joining method can increase the degree of freedom of design.
　本発明に係る中空構造物の製造方法によれば、一つ又は複数の中空部を備えた中空構造物を容易に製造することができる。また、本発明に係る接合方法によれば、複数の板状部材を連結する連結部材と板状部材とを容易に接合することができる。 According to the method for producing a hollow structure according to the present invention, a hollow structure having one or more hollow portions can be easily produced. Moreover, according to the joining method which concerns on this invention, the connection member which connects a some plate-shaped member, and a plate-shaped member can be joined easily.
本発明の第一実施形態に係る中空構造物を示す斜視図である。It is a perspective view showing the hollow structure concerning a first embodiment of the present invention. 本発明のボビンツールを示す正面図である。It is a front view which shows the bobbin tool of this invention. 第一実施形態に係る中空構造物の製造方法の第一工程を示す斜視図である。It is a perspective view which shows the 1st process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 第一実施形態に係る中空構造物の製造方法の第二工程を示す斜視図である。It is a perspective view which shows the 2nd process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 第一実施形態に係る中空構造物の製造方法の第三工程を示す斜視図である。It is a perspective view which shows the 3rd process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 第一実施形態に係る中空構造物の製造方法の第四工程を示す斜視図である。It is a perspective view which shows the 4th process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 第一実施形態に係る中空構造物の製造方法の第五工程を示す断面図である。It is sectional drawing which shows the 5th process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 第一実施形態に係る中空構造物の製造方法の第六工程を示す断面図である。It is sectional drawing which shows the 6th process of the manufacturing method of the hollow structure which concerns on 1st embodiment. 本発明の第二実施形態に係る第四工程の摩擦攪拌工程を示す斜視図である。It is a perspective view which shows the friction stirring process of the 4th process which concerns on 2nd embodiment of this invention. 第二実施形態に係る中空構造物の製造方法の第五工程を示す斜視図である。It is a perspective view which shows the 5th process of the manufacturing method of the hollow structure which concerns on 2nd embodiment. 本発明の第三実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 3rd embodiment of this invention. 本発明の第四実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 4th embodiment of this invention. 本発明の第五実施形態に係る中空構造物を示す斜視図である。It is a perspective view which shows the hollow structure which concerns on 5th embodiment of this invention. 第五実施形態に係る連結部材を示す斜視図である。It is a perspective view which shows the connection member which concerns on 5th embodiment. 第五実施形態に係る中空構造物の製造方法の第一工程及び第二工程を示す正面図である。It is a front view which shows the 1st process and the 2nd process of the manufacturing method of the hollow structure which concerns on 5th embodiment. 第五実施形態に係る中空構造物の製造方法の第三工程及び第四工程を示す正面図である。It is a front view which shows the 3rd process and the 4th process of the manufacturing method of the hollow structure which concerns on 5th embodiment. 第五実施形態の変形例に係る摩擦攪拌工程を示す斜視図である。It is a perspective view which shows the friction stirring process which concerns on the modification of 5th embodiment. 本発明の第六実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 6th embodiment of this invention. 本発明の第七実施形態に係る中空構造物の斜視図である。It is a perspective view of the hollow structure concerning a seventh embodiment of the present invention. 第七実施形態に係る連結部材を示す斜視図である。It is a perspective view which shows the connection member which concerns on 7th embodiment. 第七実施形態に係る中空構造物の製造方法の第一工程を示す正面図である。It is a front view which shows the 1st process of the manufacturing method of the hollow structure which concerns on 7th embodiment. 第七実施形態に係る中空構造物の製造方法の第二工程及び第三工程を示す正面図である。It is a front view which shows the 2nd process and the 3rd process of the manufacturing method of the hollow structure which concerns on 7th embodiment. 第七実施形態に係る中空構造物の製造方法の第四工程及び第五工程を示す正面図である。It is a front view which shows the 4th process and the 5th process of the manufacturing method of the hollow structure which concerns on 7th embodiment. 本発明の第八実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 8th embodiment of this invention. 本発明の第九実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 9th embodiment of this invention. 本発明の第十実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 10th embodiment of this invention. 本発明の第十一実施形態に係る接合方法を示す正面図である。It is a front view which shows the joining method which concerns on 11th embodiment of this invention. 第十一実施形態の変形例を示す正面図である。It is a front view showing a modification of the eleventh embodiment. 本発明の第十二実施形態に係る中空構造物を示す斜視図である。It is a perspective view which shows the hollow structure which concerns on 12th embodiment of this invention. 第十二実施形態に係る中空構造物の製造方法の第一工程を示す斜視図である。It is a perspective view which shows the 1st process of the manufacturing method of the hollow structure which concerns on 12th embodiment. 第十二実施形態に係る中空構造物の製造方法の第三工程を示す斜視図である。It is a perspective view which shows the 3rd process of the manufacturing method of the hollow structure which concerns on 12th embodiment. 第十三実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 13th embodiment. 第十三実施形態に係る中空構造物の製造方法の第一工程及び第二工程を示す断面図である。It is sectional drawing which shows the 1st process and the 2nd process of the manufacturing method of the hollow structure which concerns on 13th embodiment. 第十四実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 14th embodiment. 第十四実施形態に係る中空構造物の製造方法の第一工程及び第二工程を示す断面図である。It is sectional drawing which shows the 1st process and the 2nd process of the manufacturing method of the hollow structure which concerns on 14th embodiment. 第十四実施形態に係る中空構造物の製造方法の第三工程及び第四工程を示す断面図である。It is sectional drawing which shows the 3rd process and the 4th process of the manufacturing method of the hollow structure which concerns on 14th embodiment. 第十五実施形態に係る中空構造物を示す断面図である。It is sectional drawing which shows the hollow structure which concerns on 15th embodiment.
［第一実施形態］
　本発明の第一実施形態に係る中空構造物及び中空構造物の製造方法について図面を参照して詳細に説明する。図１に示すように本実施形態に係る中空構造物１は、断面矩形の中空部Ｍ，Ｍを備えた金属製の構造物である。なお、下記の説明における「上下」、「左右」、「前後」は、図１の矢印に従う。「上下」、「左右」、「前後」は、本発明の方向を限定するものではない。 [First embodiment]
A hollow structure and a method for manufacturing the hollow structure according to the first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the hollow structure 1 according to the present embodiment is a metal structure including hollow portions M and M having a rectangular cross section. In the following description, “up and down”, “left and right”, and “front and back” follow the arrows in FIG. “Up / down”, “left / right”, and “front / back” do not limit the direction of the present invention.
　中空構造物１は、６つの連結部材１１～１６と、７つの板状部材２１～２７を断面矩形の中空部Ｍが形成されるように突き合わせ、摩擦攪拌接合で一体形成されている。連結部材１１～１６の板状の各部位及び板状部材２１～２７の板厚寸法はほぼ同一である。 The hollow structure 1 abuts the six connecting members 11 to 16 and the seven plate-like members 21 to 27 so as to form a hollow portion M having a rectangular cross section, and is integrally formed by friction stir welding. The plate-like portions of the connecting members 11 to 16 and the plate-like members 21 to 27 have substantially the same thickness.
　連結部材１１は、断面Ｔ字状を呈する押出形材である。連結部材１１は、摩擦攪拌可能な金属で形成されており、本実施形態ではアルミニウム合金製である。連結部材１１は、板状の基部１１ａと、基部１１ａの中央から垂直に延設された板状の延設部１１ｂとで構成されている。連結部材１２～１６は、連結部材１１と同じ形状になっている。連結部材１２～１６も、連結部材１１と同様に、基部（１２ａ～１６ａ）と、延設部（１２ｂ～１６ｂ）とでそれぞれ構成されている。連結部材１１～１６は、３つの板状部材を連結可能な形状になっている。また、連結部材１２，１５は、中空部Ｍ，Ｍに跨って配設されている。 The connecting member 11 is an extruded shape having a T-shaped cross section. The connecting member 11 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment. The connecting member 11 includes a plate-like base portion 11a and a plate-like extension portion 11b extending vertically from the center of the base portion 11a. The connecting members 12 to 16 have the same shape as the connecting member 11. Similarly to the connecting member 11, the connecting members 12 to 16 are each composed of a base portion (12a to 16a) and an extending portion (12b to 16b). The connecting members 11 to 16 have a shape capable of connecting three plate-like members. Further, the connecting members 12 and 15 are disposed across the hollow portions M and M.
　板状部材２１～２７は、摩擦攪拌可能な金属で形成された板状部材である。板状部材２１～２７は、本実施形態では、連結部材１１と同じ材料で形成されている。板状部材２１は、連結部材１１，１２の間に配設されている。板状部材２２は、連結部材１２，１３の間に配設されている。板状部材２３は、連結部材１１，１４の間に配設されている。板状部材２４は、連結部材１２，１５の間に配設されている。板状部材２５は、連結部材１３，１６の間に配設されている。板状部材２３，２４，２５は、板状部材２１，２２に対して垂直になっている。 The plate-like members 21 to 27 are plate-like members made of metal capable of friction stirring. The plate-like members 21 to 27 are formed of the same material as that of the connecting member 11 in this embodiment. The plate member 21 is disposed between the connecting members 11 and 12. The plate member 22 is disposed between the connecting members 12 and 13. The plate member 23 is disposed between the connecting members 11 and 14. The plate-like member 24 is disposed between the connecting members 12 and 15. The plate member 25 is disposed between the connecting members 13 and 16. The plate- like members 23, 24 and 25 are perpendicular to the plate- like members 21 and 22.
　板状部材２６は、連結部材１４，１５の間に配設されている。板状部材２７は、連結部材１５，１６の間に配設されている。板状部材２６，２７は、板状部材２１，２２に対して平行（実質的に平行）になっている。各連結部材１１～１６の各部位の端面と、各板状部材２１～２７の端面との各突合せ部には塑性化領域Ｗが形成されている。 The plate member 26 is disposed between the connecting members 14 and 15. The plate member 27 is disposed between the connecting members 15 and 16. The plate members 26 and 27 are parallel (substantially parallel) to the plate members 21 and 22. A plasticized region W is formed at each abutting portion between the end face of each part of each connecting member 11 to 16 and the end face of each plate-like member 21 to 27.
　次に、本実施形態の中空構造物の製造方法について説明する。図２に示すように、本実施形態に係る中空構造物の製造方法では、ボビンツール３１を用いる。ボビンツール３１は、下部ショルダ３２と、上部ショルダ３３と、下部ショルダ３２と上部ショルダ３３とを連結するピン３４とで構成されている。下部ショルダ３２は、円柱状を呈する大径部３２ａと、大径部３２ａからピン３４に向けて縮径するテーパー部３２ｂと、平端部３２ｃとを有する。上部ショルダ３３は、円柱状を呈する大径部３３ａと、大径部３３ａからピン３４に向けて縮径するテーパー部３３ｂと、平端部３３ｃを有する。ピン３４は、円柱状を呈する。ピン３４の周囲には、螺旋溝が刻設されている。 Next, a method for manufacturing the hollow structure according to this embodiment will be described. As shown in FIG. 2, the bobbin tool 31 is used in the method for manufacturing a hollow structure according to the present embodiment. The bobbin tool 31 includes a lower shoulder 32, an upper shoulder 33, and a pin 34 that connects the lower shoulder 32 and the upper shoulder 33. The lower shoulder 32 includes a large-diameter portion 32a that has a cylindrical shape, a tapered portion 32b that decreases in diameter from the large-diameter portion 32a toward the pin 34, and a flat end portion 32c. The upper shoulder 33 includes a large-diameter portion 33a that has a cylindrical shape, a tapered portion 33b that decreases in diameter from the large-diameter portion 33a toward the pin 34, and a flat end portion 33c. The pin 34 has a cylindrical shape. A spiral groove is engraved around the pin 34.
　ボビンツール３１は、マシニングセンタ又は先端にスピンドルユニット等の回転手段を備えたロボットアームに取り付けられる。ロボットアームの先端にボビンツール３１が取り付けられることにより、ボビンツール３１の回転中心軸の傾斜を容易に変更させることができる。また、ロボットアームの先端に取り付けられることにより、狭隘な部位においても摩擦攪拌接合が可能となる。 The bobbin tool 31 is attached to a machining center or a robot arm having a rotating means such as a spindle unit at the tip. By attaching the bobbin tool 31 to the tip of the robot arm, the inclination of the rotation center axis of the bobbin tool 31 can be easily changed. Further, by attaching to the tip of the robot arm, friction stir welding can be performed even in a narrow part.
　中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程と、第五工程と、第六工程と、第七工程と、を行う。図３に示すように、第一実施形態に係る第一工程は、連結部材１２と板状部材２４とを接合する工程である。第一実施形態に係る第一工程では、突合せ工程と、摩擦攪拌工程とを行う。第一工程で用いる固定治具は、受け部材Ｈと、中間部材Ｎと、押圧部材Ｐと、中間部材Ｑとで構成されている。受け部材Ｈは、断面Ｌ字状を呈する金属部材であって、架台Ｔに移動不能に固定されている。中間部材Ｎは、断面Ｌ字状を呈する部材であって、受け部材Ｈと板状部材２４との間に配設されている。中間部材Ｎは、基礎部Ｎ１と、基礎部Ｎ１から立ち上がる立上り部Ｎ２とで構成されている。基礎部Ｎ１の板厚は、基部１２ａの張出長さＬ１と同じ寸法になっている。中間部材Ｎの立上り部Ｎ２の端面には板状部材２４を固定するクランプＫが設けられている。 In the method for manufacturing a hollow structure, a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, and a seventh step are performed. As shown in FIG. 3, the first step according to the first embodiment is a step of joining the connecting member 12 and the plate-like member 24. In the first process according to the first embodiment, a butting process and a friction stirring process are performed. The fixing jig used in the first process includes a receiving member H, an intermediate member N, a pressing member P, and an intermediate member Q. The receiving member H is a metal member having an L-shaped cross section, and is fixed to the gantry T so as not to move. The intermediate member N is a member having an L-shaped cross section, and is disposed between the receiving member H and the plate-like member 24. The intermediate member N is composed of a base portion N1 and a rising portion N2 that rises from the base portion N1. The plate thickness of the base portion N1 is the same as the overhang length L1 of the base portion 12a. A clamp K for fixing the plate-like member 24 is provided on the end face of the rising portion N2 of the intermediate member N.
　押圧部材Ｐは、受け部材Ｈと対向する位置において架台Ｔに固定されている。押圧部材Ｐは、例えば、万力であって、受け部材Ｈ方向に押圧力を付与する部材である。押圧部材Ｐは、中間部材Ｑの長手方向に複数個設置されている。中間部材Ｑは、押圧部材Ｐと連結部材１２の間に配設される板状部材である。中間部材Ｎ，Ｑを設けることにより、連結部材１２及び板状部材２４の損傷を防ぐことができる。なお、中間部材Ｎ，Ｑは省略してもよい。 The pressing member P is fixed to the gantry T at a position facing the receiving member H. The pressing member P is, for example, a vise and a member that applies a pressing force in the direction of the receiving member H. A plurality of pressing members P are installed in the longitudinal direction of the intermediate member Q. The intermediate member Q is a plate-like member disposed between the pressing member P and the connecting member 12. By providing the intermediate members N and Q, damage to the connecting member 12 and the plate-like member 24 can be prevented. The intermediate members N and Q may be omitted.
　第一工程の突合せ工程では、連結部材１２の基部１２ａの端面１２ｄを架台Ｔに当接させつつ、延設部１２ｂの端面１２ｅと板状部材２４の端面２４ａとを突き合わせる。これにより、突合せ部Ｊ１が形成される。板状部材２４の端面２４ｂは立上り部Ｎ２の側面Ｎ２ａに当接させつつ、板状部材２４の側面２４ｃと基礎部Ｎ１の上面Ｎ１ａを当接させる。また、クランプＫで板状部材２４を固定しつつ、押圧部材Ｐで押圧力を付与して連結部材１２と板状部材２４とを移動不能に拘束する。 In the butting step of the first step, the end surface 12d of the extending portion 12b and the end surface 24a of the plate-like member 24 are butted while the end surface 12d of the base portion 12a of the connecting member 12 is brought into contact with the gantry T. Thereby, the butt | matching part J1 is formed. The end surface 24b of the plate-like member 24 is brought into contact with the side surface N2a of the rising portion N2, while the side surface 24c of the plate-like member 24 is brought into contact with the upper surface N1a of the base portion N1. Further, while the plate member 24 is fixed by the clamp K, a pressing force is applied by the pressing member P to restrain the connecting member 12 and the plate member 24 so as not to move.
　第一工程の摩擦攪拌工程では、ボビンツール３１を用いて突合せ部Ｊ１を前後方向になぞるように摩擦攪拌接合する。ピン３４の長さ（ショルダ間距離）は、延設部１２ｂの板厚及び板状部材２４の板厚よりも若干短くなっている。摩擦攪拌工程では、平端部３２ｃ，３３ｃ（図２参照）を突合せ部Ｊ１にわずかに入り込ませながら摩擦攪拌接合を行う。ボビンツール３１の移動軌跡には塑性化領域Ｗ（図４参照）が形成される。 In the first friction stir step, the bobbin tool 31 is used to perform friction stir welding so that the butt portion J1 is traced in the front-rear direction. The length of the pin 34 (distance between shoulders) is slightly shorter than the plate thickness of the extending portion 12 b and the plate thickness of the plate-like member 24. In the friction stir process, the friction stir welding is performed while the flat end portions 32c and 33c (see FIG. 2) slightly enter the butting portion J1. A plasticized region W (see FIG. 4) is formed on the movement trajectory of the bobbin tool 31.
　第一実施形態に係る第二工程は、図４に示すように、連結部材１５と板状部材２４とを接合する工程である。第一実施形態に係る第二工程では、突合せ工程と、摩擦攪拌工程とを行う。突合せ工程では、連結部材１５の基部１５ａの端面１５ｃを架台Ｔに当接させつつ、延設部１５ｂの端面１５ｅと板状部材２４の端面２４ｂとを突き合わせる。これにより、突合せ部Ｊ２が形成される。連結部材１２と受け部材Ｈとの間には中間部材Ｑを設置し、連結部材１５と押圧部材Ｐとの間には中間部材Ｑを設置する。また、押圧部材Ｐで押圧力を付与して連結部材１５と、既に接合されている連結部材１２と板状部材２４とを移動不能に拘束する。 The second step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 24 as shown in FIG. In the second process according to the first embodiment, a butting process and a friction stirring process are performed. In the butting step, the end surface 15 c of the extending portion 15 b and the end surface 24 b of the plate-like member 24 are butted while the end surface 15 c of the base portion 15 a of the connecting member 15 is brought into contact with the gantry T. Thereby, the butt | matching part J2 is formed. An intermediate member Q is installed between the connecting member 12 and the receiving member H, and an intermediate member Q is installed between the connecting member 15 and the pressing member P. Further, a pressing force is applied by the pressing member P to restrain the connecting member 15, the already connected connecting member 12 and the plate-like member 24 so as not to move.
　第二工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２を摩擦攪拌接合する。第一工程及び第二工程によって、断面略Ｉ字状を呈するＩ字状部材４２が形成される。なお、第一工程を省略して、図４に示す第二工程のように連結部材１２，１５及び板状部材２４を移動不能に拘束し、突合せ部Ｊ１，Ｊ２に対して摩擦攪拌接合を行ってもよい。 In the friction stirring step of the second step, the butt joint J2 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step. Through the first step and the second step, an I-shaped member 42 having a substantially I-shaped cross section is formed. Note that the first step is omitted, and the connecting members 12 and 15 and the plate-like member 24 are immovably restrained as in the second step shown in FIG. 4, and friction stir welding is performed on the butted portions J1 and J2. May be.
　また、第一工程及び第二工程と同じ要領で、Ｉ字状部材４２と同じ形状のＩ字状部材４１，４３（図１参照）も作成する。Ｉ字状部材４１，４２，４３は、中空構造物１の上下方向に延設される部材である。 Also, I-shaped members 41 and 43 (see FIG. 1) having the same shape as the I-shaped member 42 are also created in the same manner as the first step and the second step. The I-shaped members 41, 42, 43 are members that extend in the vertical direction of the hollow structure 1.
　第一実施形態に係る第三工程は、図５に示すように、連結部材１５と板状部材２７とを接合する工程である。言い換えると、Ｉ字状部材４２と板状部材２７とを接合する工程である。第一実施形態に係る第三工程では、突合せ工程と、摩擦攪拌工程とを行う。第三工程で用いる固定治具は、受け部材Ｈと、中間部材ＲＡ，ＲＢと、押圧部材Ｐとで構成されている。中間部材ＲＡ，ＲＢは、板状を呈する本体部Ｒ１と、本体部Ｒ１から上下方向に張り出す張出部Ｒ２，Ｒ２とで構成されている。張出部Ｒ２の板厚は、本体部Ｒ１の板厚よりも薄くなっているため、本体部Ｒ１と張出部Ｒ２との間に段差部が形成されている。張出部Ｒ２の張り出し長さは、板状部材２７の板厚及び基部１２ａ，１５ａの板厚と同等になっている。中間部材ＲＡは、受け部材Ｈと板状部材２７の間に設置される。中間部材ＲＢは、押圧部材ＰとＩ字状部材４２との間に設置される。 The third step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 27 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-shaped member 27. In the third step according to the first embodiment, a butting step and a friction stirring step are performed. The fixing jig used in the third step includes a receiving member H, intermediate members RA and RB, and a pressing member P. The intermediate members RA and RB are configured by a main body portion R1 having a plate shape and overhang portions R2 and R2 projecting from the main body portion R1 in the vertical direction. Since the plate | board thickness of overhang | projection part R2 is thinner than the plate | board thickness of main-body part R1, the level | step-difference part is formed between main-body part R1 and overhang | projection part R2. The overhang length of the overhang portion R2 is equal to the plate thickness of the plate member 27 and the plate thickness of the base portions 12a and 15a. The intermediate member RA is installed between the receiving member H and the plate member 27. The intermediate member RB is installed between the pressing member P and the I-shaped member 42.
　第三工程の突合せ工程では、連結部材１５の基部１５ａの端面１５ｄと板状部材２７の端面２７ａとを突き合わせる。これにより、突合せ部Ｊ３が形成される。中間部材ＲＢの上下の段差部に連結部材１２の基部１２ａと、連結部材１５の基部１５ａとをそれぞれ当接させつつ、板状部材２７の端面２７ｂと他方の中間部材ＲＡの上側の張出部Ｒ２とを当接させる。また、クランプＫで板状部材２７を固定しつつ、押圧部材Ｐで押圧力を付与してＩ字状部材４２と板状部材２７とを移動不能に拘束する。 In the third butting step, the end surface 15d of the base portion 15a of the connecting member 15 and the end surface 27a of the plate-like member 27 are butted. Thereby, the butt | matching part J3 is formed. The base portion 12a of the connecting member 12 and the base portion 15a of the connecting member 15 are brought into contact with the upper and lower step portions of the intermediate member RB, respectively, and the protruding portion on the upper surface of the end surface 27b of the plate-like member 27 and the other intermediate member RA. R2 is brought into contact. Further, while the plate member 27 is fixed by the clamp K, a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate member 27 so as not to move.
　第三工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ３を摩擦攪拌接合する。 In the friction stirring step of the third step, the butt joint J3 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
　第一実施形態に係る第四工程は、図６に示すように、連結部材１５と板状部材２６とを接合する工程である。言い換えると、Ｉ字状部材４２と板状部材２６とを接合する工程である。第一実施形態に係る第四工程では、突合せ工程と、摩擦攪拌工程とを行う。第四工程で用いる固定治具は、第一実施形態に係る第三工程と同じである。 The fourth step according to the first embodiment is a step of joining the connecting member 15 and the plate-like member 26 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-shaped member 26. In the fourth process according to the first embodiment, a butt process and a friction stirring process are performed. The fixing jig used in the fourth step is the same as that in the third step according to the first embodiment.
　第四工程の突合せ工程では、連結部材１５の基部１５ａの端面１５ｃと板状部材２６の端面２６ｂとを突き合わせる。これにより、突合せ部Ｊ４が形成される。板状部材２６の端面２６ａと中間部材ＲＢの上側の張出部Ｒ２とを当接させる。また、クランプＫで板状部材２６を固定しつつ、押圧部材Ｐで押圧力を付与してＩ字状部材４２と板状部材２６，２７を移動不能に拘束する。 In the fourth butting step, the end surface 15c of the base portion 15a of the connecting member 15 and the end surface 26b of the plate-like member 26 are butted. Thereby, the butt | matching part J4 is formed. The end surface 26a of the plate-like member 26 is brought into contact with the upper overhanging portion R2 of the intermediate member RB. Further, while the plate member 26 is fixed by the clamp K, a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate members 26 and 27 so as not to move.
　第四工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ４を摩擦攪拌接合する。 In the friction stirring step of the fourth step, the butt joint J4 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step.
　第一実施形態に係る第五工程は、図７に示すように、連結部材１２と板状部材２１とを接合するとともに、連結部材１２と板状部材２２とを接合する工程である。言い換えると、Ｉ字状部材４２と板状部材２１とを接合するとともに、Ｉ字状部材４２と板状部材２２とを接合する工程である。第一実施形態に係る第五工程では、突合せ工程と、摩擦攪拌工程とを行う。第五工程で用いる固定治具は、第一実施形態に係る第三工程と同じである。 The fifth step according to the first embodiment is a step of joining the connecting member 12 and the plate-like member 21 and joining the connecting member 12 and the plate-like member 22 as shown in FIG. In other words, it is a step of joining the I-shaped member 42 and the plate-like member 22 and joining the I-shaped member 42 and the plate-like member 22 together. In the fifth step according to the first embodiment, a butting step and a friction stirring step are performed. The fixing jig used in the fifth step is the same as the third step according to the first embodiment.
　第五工程の突合せ工程では、連結部材１２の基部１２ａの端面１２ｃと板状部材２１の端面２１ｂとを突き合わせる。これにより、突合せ部Ｊ５が形成される。板状部材２１の端面２１ａと中間部材ＲＡの上側の張出部Ｒ２とを当接させる。また、連結部材１２の基部１２ａの端面１２ｄと板状部材２２の端面２２ａとを突き合わせる。これにより、突合せ部Ｊ６が形成される。板状部材２２の端面２２ｂと中間部材ＲＢの上側の張出部Ｒ２とを当接させる。さらに、板状部材２６の端面２６ａと中間部材ＲＡの下側の張出部Ｒ２と当接させつつ、板状部材２７の端面２７ｂと中間部材ＲＢの下側の張出部Ｒ２とを当接させる。そして、クランプＫ，Ｋで板状部材２１，２２をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与してＩ字状部材４２と板状部材２１，２２とを移動不能に拘束する。 In the fifth butting step, the end surface 12c of the base portion 12a of the connecting member 12 and the end surface 21b of the plate-like member 21 are butted. Thereby, the butt | matching part J5 is formed. The end surface 21a of the plate-like member 21 is brought into contact with the upper overhanging portion R2 of the intermediate member RA. Further, the end surface 12 d of the base portion 12 a of the connecting member 12 and the end surface 22 a of the plate-like member 22 are butted together. Thereby, the butt | matching part J6 is formed. The end surface 22b of the plate-like member 22 is brought into contact with the overhanging portion R2 on the upper side of the intermediate member RB. Further, the end surface 27b of the plate-like member 27 and the lower protruding portion R2 of the intermediate member RB are brought into contact with the end surface 26a of the plate-like member 26 and the lower protruding portion R2 of the intermediate member RA. Let Then, the plate members 21 and 22 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to restrain the I-shaped member 42 and the plate members 21 and 22 so that they cannot move.
　第五工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて突合せ部Ｊ５，Ｊ６を摩擦攪拌接合する。 In the fifth friction agitation step, the butt portions J5 and J6 are friction agitated and joined using the bobbin tool 31 in the same manner as the first friction agitation step.
　第一実施形態に係る第六工程は、図８に示すように、連結部材１１と板状部材２１とを接合するとともに、連結部材１３と板状部材２２とを接合する工程である。言い換えると、予め作成したＩ字状部材４１と板状部材２１とを接合するとともに、予め作成したＩ字状部材４３と板状部材２２とを接合する工程である。第一実施形態に係る第六工程では、突合せ工程と、摩擦攪拌工程とを行う。第六工程で用いる固定治具は、第一実施形態に係る第三工程と同じである。 The sixth step according to the first embodiment is a step of joining the connecting member 11 and the plate-like member 21 and joining the connecting member 13 and the plate-like member 22 as shown in FIG. In other words, it is a step of joining the I-shaped member 41 and the plate-shaped member 21 created in advance, and joining the I-shaped member 43 and the plate-shaped member 22 created in advance. In the sixth step according to the first embodiment, a butting step and a friction stirring step are performed. The fixing jig used in the sixth step is the same as that in the third step according to the first embodiment.
　第六工程の突合せ工程では、連結部材１１の基部１１ａの端面１１ｄと板状部材２１の端面２１ａとを突き合わせる。これにより、突合せ部Ｊ７が形成される。連結部材１１の基部１１ａの端面１１ｃと中間部材ＲＡの上側の張出部Ｒ２とを当接させる。また、連結部材１３の基部１３ａの端面１３ｃと板状部材２２の端面２２ｂとを突き合わせる。これにより、突合せ部Ｊ８が形成される。連結部材１３の基部１３ａの端面１３ｄと他方の中間部材ＲＢの上側の張出部Ｒ２とを当接させる。さらに、連結部材１４の基部１４ａの端面１４ｃと中間部材ＲＡの下側の張出部Ｒ２とを当接させつつ、連結部材１６の基部１６ａの端面１６ｄと中間部材ＲＢの下側の張出部Ｒ２とを当接させる。そして、クランプＫ，Ｋで連結部材１１，１３をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与して板状部材２１，２２とＩ字状部材４１，４３とを移動不能に拘束する。 In the butting step of the sixth step, the end surface 11d of the base portion 11a of the connecting member 11 and the end surface 21a of the plate-like member 21 are butted. Thereby, the butt | matching part J7 is formed. The end surface 11c of the base portion 11a of the connecting member 11 is brought into contact with the overhanging portion R2 on the upper side of the intermediate member RA. Further, the end surface 13 c of the base portion 13 a of the connecting member 13 and the end surface 22 b of the plate-like member 22 are butted together. Thereby, the butt | matching part J8 is formed. The end surface 13d of the base portion 13a of the connecting member 13 is brought into contact with the overhanging portion R2 on the upper side of the other intermediate member RB. Furthermore, the end surface 14d of the base portion 16a of the connecting member 16 and the lower protruding portion of the intermediate member RB are brought into contact with the end surface 14c of the base portion 14a of the connecting member 14 and the lower protruding portion R2 of the intermediate member RA. R2 is brought into contact. Then, the fixing members 11 and 13 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to restrain the plate- like members 21 and 22 and the I-shaped members 41 and 43 so that they cannot move.
　なお、当該突合せ工程によって、連結部材１４の基部１４ａの端面１４ｄと板状部材２６の端面２６ａとが突き合わされて突合せ部Ｊ９が形成される。また、連結部材１６の基部１６ａの端面１６ｃと板状部材２７の端面２７ｂとが突き合わされて突合せ部Ｊ１０が形成される。 In the abutting step, the end surface 14d of the base portion 14a of the connecting member 14 and the end surface 26a of the plate-like member 26 are abutted to form the abutting portion J9. Further, the end surface 16c of the base portion 16a of the connecting member 16 and the end surface 27b of the plate-like member 27 are abutted to form a butted portion J10.
　第六工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ７，Ｊ８を摩擦攪拌接合する。 In the sixth step of friction stirring, the butt joints J7 and J8 are friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring.
　第一実施形態に係る第七工程は、具体的な図は省略するが、図８を参照して説明する。第七工程は、連結部材１４と板状部材２６とを接合するとともに、連結部材１６と板状部材２７とを接合する。言い換えると、Ｉ字状部材４１と板状部材２６とを接合するとともに、Ｉ字状部材４３と板状部材２７とを接合する。第一実施形態に係る第七工程では、突合せ工程と、摩擦攪拌工程とを行う。第七工程で用いる固定治具は、第一実施形態に係る第三工程と同じである。 The seventh step according to the first embodiment will be described with reference to FIG. In the seventh step, the connecting member 14 and the plate-like member 26 are joined, and the connecting member 16 and the plate-like member 27 are joined. In other words, the I-shaped member 41 and the plate-like member 26 are joined, and the I-shaped member 43 and the plate-like member 27 are joined. In the seventh step according to the first embodiment, a butting step and a friction stirring step are performed. The fixing jig used in the seventh step is the same as that in the third step according to the first embodiment.
　第七工程の突合せ工程では、第六工程を行った後に、被接合金属部材の上下をひっくり返し、第六工程と同じ要領で被接合金属部材を固定治具で移動不能に拘束する。第七工程の摩擦攪拌工程では、第一工程と同じ要領でボビンツール３１を用いて突合せ部Ｊ９，Ｊ１０を摩擦攪拌接合する。以上により、図１に示すように、中空部Ｍ，Ｍを備えた中空構造物１が形成される。 In the seventh matching process, after the sixth step, the metal member to be joined is turned upside down, and the metal member to be joined is restrained by a fixing jig in the same manner as in the sixth step. In the friction stirring step of the seventh step, the butt joints J9 and J10 are friction stir welded using the bobbin tool 31 in the same manner as in the first step. As described above, as shown in FIG. 1, the hollow structure 1 including the hollow portions M and M is formed.
　以上説明した本実施形態に係る中空構造物の製造方法によれば、ボビンツール３１を用いることで、各突合せ部Ｊ１～Ｊ１０の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物１を容易に製造することができる。また、連結部材１１～１６は、押出形材であるため、押し出し方向に長い中空構造物１を容易に製造することができる。 According to the method for manufacturing a hollow structure according to the present embodiment described above, the entire length in the height direction of each butt portion J1 to J10 can be friction stir welded at a time by using the bobbin tool 31, so that the hollow structure 1 can be easily manufactured. Further, since the connecting members 11 to 16 are extruded shapes, the hollow structure 1 that is long in the extrusion direction can be easily manufactured.
　また、摩擦攪拌工程では、押圧部材Ｐと架台Ｔに移動不能に拘束された受け部材Ｈとで、連結部材１１～１６及び板状部材２１～２７をそれぞれ挟持した状態で摩擦攪拌接合を行うことが好ましい。これにより、摩擦攪拌工程において、各突合せ部の目開きを防ぐことができる。また、第３工程～第７工程では、同じ固定治具で対応できるため、各工程をより容易にすることができる。 Further, in the friction stir process, the friction stir welding is performed in a state where the connecting members 11 to 16 and the plate-like members 21 to 27 are sandwiched between the pressing member P and the receiving member H restrained immovably on the mount T. Is preferred. Thereby, the opening of each butt portion can be prevented in the friction stirring step. In addition, since the third to seventh steps can be handled with the same fixing jig, each step can be made easier.
　以上本発明の第一実施形態について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。例えば、本実施形態では、２つの中空部Ｍを備える中空構造物１を形成したが、中空部は単数であってもよいし、３つ以上であってもよい。また、本実施形態では連結部材を断面Ｔ字状に形成したが、角部については断面Ｌ字状でもよい。また、連結部材は断面十字状（クロス状）でもよい。この場合は、例えば、図１で示す中空構造物１の中空部Ｍの上下方向及び左右方向に中空部を継ぎ足して中空構造物を形成することができる。つまり、連結部材及び板状部材を適宜組み合わせることで、複数の断面矩形の中空部を備えた中空構造物を容易に製造することができる。 Although the first embodiment of the present invention has been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, in the present embodiment, the hollow structure 1 including two hollow portions M is formed, but the number of the hollow portions may be one or three or more. In the present embodiment, the connecting member is formed in a T-shaped cross section, but the corner portion may have an L-shaped cross section. The connecting member may have a cross shape (cross shape) in cross section. In this case, for example, the hollow structure can be formed by adding the hollow parts in the vertical direction and the left-right direction of the hollow part M of the hollow structure 1 shown in FIG. That is, by appropriately combining the connecting member and the plate-like member, a hollow structure having a plurality of rectangular hollow portions can be easily manufactured.
　また、図８に示すように、摩擦攪拌工程を行う際に、裏当て材Ｓを用いてもよい。裏当て材Ｓの高さ寸法は、ここでは延設部１２ｂ，１５ｂの高さ寸法と板状部材２４の高さ寸法の和と同一である。裏当て材Ｓを用いることで、摩擦攪拌工程を安定して行うことができる。裏当て材は、第２工程～第５工程においても高さ寸法を適宜設定して使用してもよい。また、前記した中空構造物の製造方法は一例であって、本発明を限定するものではない。 Also, as shown in FIG. 8, a backing material S may be used when performing the friction stirring step. Here, the height dimension of the backing material S is the same as the sum of the height dimension of the extending portions 12 b and 15 b and the height dimension of the plate-like member 24. By using the backing material S, the friction stirring process can be performed stably. The backing material may be used by appropriately setting the height dimension in the second to fifth steps. Moreover, the manufacturing method of an above described hollow structure is an example, Comprising: This invention is not limited.
［第二実施形態］
　次に、本発明の第二実施形態に係る中空構造物の製造方法について説明する。第二実施形態に係る中空構造物の製造方法は、Ｌ字状を呈する連結部材を用いる点で第一実施形態と相違する。第二実施形態の説明においては、第一実施形態と共通する工程については説明を省略する。 [Second Embodiment]
Next, the manufacturing method of the hollow structure which concerns on 2nd embodiment of this invention is demonstrated. The method for manufacturing a hollow structure according to the second embodiment is different from the first embodiment in that a connection member having an L shape is used. In the description of the second embodiment, description of steps common to the first embodiment is omitted.
　第二実施形態に係る中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程と、第五工程とを少なくとも行う。第二実施形態に係る第一工程～第三工程は、第一実施形態の第一工程～第三工程と概ね同等であるため説明を省略する。 In the method for manufacturing a hollow structure according to the second embodiment, at least a first step, a second step, a third step, a fourth step, and a fifth step are performed. Since the first step to the third step according to the second embodiment are substantially the same as the first step to the third step of the first embodiment, description thereof is omitted.
　第二実施形態に係る第四工程は、図９に示すように、Ｕ字状部材４４を形成する工程である。第四工程で用いる固定治具は、受け部材Ｈと、中間部材ＮＡ，ＮＢと、押圧部材Ｐとで構成されている。第二実施形態に係る第四工程では、突合せ工程と、摩擦攪拌工程とを行う。連結部材１７は、板状の基部１７ａと、基部１７ａの端部から垂直に延設される板状の延設部１７ｂとを有し、断面Ｌ字状を呈する。連結部材１８は、板状の基部１８ａと、基部１８ａの端部から垂直に延設される板状の延設部１８ｂとを有し、断面Ｌ字状を呈する。 The fourth step according to the second embodiment is a step of forming a U-shaped member 44 as shown in FIG. The fixing jig used in the fourth step includes a receiving member H, intermediate members NA and NB, and a pressing member P. In the fourth process according to the second embodiment, a butt process and a friction stirring process are performed. The connecting member 17 has a plate-like base portion 17a and a plate-like extension portion 17b extending vertically from the end of the base portion 17a, and has an L-shaped cross section. The connecting member 18 has a plate-like base portion 18a and a plate-like extension portion 18b extending vertically from the end of the base portion 18a, and has an L-shaped cross section.
　第二実施形態に係る第四工程の突合せ工程では、連結部材１７と板状部材２３とを突き合わせるとともに、連結部材１８と板状部材２３とを突き合わせる。より詳しくは、連結部材１７の延設部１７ｂの端面１７ｄと板状部材２３の端面２３ａとを突き合わせて突合せ部Ｊ１１を形成するとともに、連結部材１８の延設部１８ｂの端面１８ｄと板状部材２３の端面２３ｂとを突き合わせて突合せ部Ｊ１２を形成する。また、連結部材１７と中間部材ＮＡとを当接させるとともに、連結部材１８と中間部材ＮＢとを当接させる。そして、押圧部材Ｐで押圧力を付与して連結部材１７，１８と板状部材２３とを移動不能に拘束する。 In the matching step of the fourth step according to the second embodiment, the connecting member 17 and the plate-like member 23 are abutted, and the connecting member 18 and the plate-like member 23 are abutted. More specifically, the end surface 17d of the extending portion 17b of the connecting member 17 and the end surface 23a of the plate-like member 23 are abutted to form the abutting portion J11, and the end surface 18d of the extending portion 18b of the connecting member 18 and the plate-like member are formed. The butt portion J12 is formed by abutting the end surface 23b of the butt 23. Further, the connecting member 17 and the intermediate member NA are brought into contact with each other, and the connecting member 18 and the intermediate member NB are brought into contact with each other. Then, a pressing force is applied by the pressing member P to restrain the connecting members 17 and 18 and the plate-like member 23 from moving.
　第二実施形態に係る第四工程の摩擦攪拌工程では、第一実施形態と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ１１，Ｊ１２を摩擦攪拌接合する。なお、摩擦攪拌工程では、必要に応じて裏当て材Ｓを用いてもよい。 In the friction stirring step of the fourth step according to the second embodiment, the abutting portions J11 and J12 are friction stir welded using the bobbin tool 31 in the same manner as in the first embodiment. In the friction stirring step, the backing material S may be used as necessary.
　第二実施形態に係る第五工程は、図１０に示すように、連結部材１８と板状部材２６とを接合する工程である。言い換えると、Ｕ字状部材４４と板状部材２６とを接合する工程である。第二実施形態に係る第五工程では、突合せ工程と、摩擦攪拌工程とを行う。第五工程で用いる固定治具は、受け部材Ｈと、中間部材ＲＡと、中間部材Ｑと、押圧部材Ｐとで構成されている。 The fifth step according to the second embodiment is a step of joining the connecting member 18 and the plate-like member 26 as shown in FIG. In other words, it is a step of joining the U-shaped member 44 and the plate-shaped member 26 together. In the fifth step according to the second embodiment, a butting step and a friction stirring step are performed. The fixing jig used in the fifth step includes a receiving member H, an intermediate member RA, an intermediate member Q, and a pressing member P.
　第二実施形態に係る第五工程の突合せ工程では、連結部材１８の基部１８ａの端面１８ｃと板状部材２６の端面２６ｂとを突き合わせる。これにより、突合せ部Ｊ１３が形成される。そして、クランプＫ，Ｋで連結部材１５を固定しつつ、押圧部材Ｐで押圧力を付与してＵ字状部材４４とＩ字状部材４２と板状部材２６とを移動不能に拘束する。 In the butting process of the fifth process according to the second embodiment, the end face 18c of the base 18a of the connecting member 18 and the end face 26b of the plate-like member 26 are butted. Thereby, the butt | matching part J13 is formed. The U-shaped member 44, the I-shaped member 42, and the plate-shaped member 26 are restrained to be immovable by applying a pressing force with the pressing member P while fixing the connecting member 15 with the clamps K, K.
　第二実施形態に係る第五工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ１３を摩擦攪拌接合する。第二実施形態に係る第六工程以降の工程については、第一実施形態と略同等であるため、説明は省略する。 In the friction stirring step of the fifth step according to the second embodiment, the butt joint J13 is friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment. About the process after the 6th process concerning a second embodiment, since it is substantially equivalent to a first embodiment, explanation is omitted.
　以上説明した、第二実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第二実施形態のように、中空部を構成する角部を断面Ｌ字状の連結部材１７，１８としてもよい。 The above-described method for manufacturing a hollow structure according to the second embodiment can provide substantially the same effect as that of the first embodiment. As in the second embodiment, the corner portions constituting the hollow portion may be the connecting members 17 and 18 having an L-shaped cross section.
［第三実施形態］
　次に、第三実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図１１に示すように、第三実施形態に係る中空構造物１０１は、二体の断面Ｕ字状の連結部材１０２，１０２と、断面Ｉ字状の連結部材１０３と、４つの板状部材１０４とで構成されている。中空構造物１０１は、連結部材１０３を挟んで断面矩形の中空部Ｍ，Ｍが形成されている。 [Third embodiment]
Next, a hollow structure according to the third embodiment and a method for manufacturing the hollow structure will be described. As shown in FIG. 11, the hollow structure 101 according to the third embodiment includes two connecting members 102 and 102 having a U-shaped cross section, a connecting member 103 having an I-shaped cross section, and four plate-like members 104. It consists of and. The hollow structure 101 is formed with hollow portions M and M having a rectangular cross section with the connecting member 103 interposed therebetween.
　連結部材１０２は、板状を呈する基部１０２ａと、基部１０２ａの両端から基部１０２ａに対して垂直に延設された一対の板状の延設部１０２ｂ，１０２ｃとで構成されている。連結部材１０２は、押出し成形によって形成された押出形材である。連結部材１０３は、板状を呈する基部１０３ａと、基部１０３ａの両端から基部１０３ａに対して垂直に延設された一対の板状の延設部１０３ｂ，１０３ｃとで構成されている。連結部材１０３は、押出し成形によって形成された押出形材である。延設部１０３ｂ，１０３ｃは、基部１０３ａの両側に張り出している。 The connecting member 102 includes a base portion 102a having a plate shape, and a pair of plate- like extension portions 102b and 102c extending perpendicularly to the base portion 102a from both ends of the base portion 102a. The connecting member 102 is an extruded shape formed by extrusion molding. The connecting member 103 includes a base portion 103a having a plate shape and a pair of plate- like extension portions 103b and 103c extending perpendicularly to the base portion 103a from both ends of the base portion 103a. The connecting member 103 is an extruded shape formed by extrusion molding. The extending portions 103b and 103c project on both sides of the base portion 103a.
　左側の一対の板状部材１０４，１０４は、左側の連結部材１０２と連結部材１０３との間に配置されている。また、右側の一対の板状部材１０４，１０４は、右側の連結部材１０２と連結部材１０３との間に配置されている。板状部材１０４の板厚は、各延設部１０２ｂ，１０２ｃ，１０３ｂ，１０３ｃの板厚と同等になっている。 The left pair of plate- like members 104, 104 are arranged between the left connecting member 102 and the connecting member 103. The pair of right plate members 104 and 104 are disposed between the right connecting member 102 and the connecting member 103. The plate thickness of the plate-like member 104 is equal to the plate thickness of each extending portion 102b, 102c, 103b, 103c.
　第三実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。第三実施形態に係る突合せ工程では、連結部材１０２，１０３と、板状部材１０４とを突き合わせる工程である。詳しくは、左側の連結部材１０２の延設部１０２ｂの端面１０２ｄと、板状部材１０４の端面１０４ｂとを突き合わせる。これにより、突合せ部Ｊ１１１が形成される。また、左側の連結部材１０２の延設部１０２ｃの端面１０２ｅと、板状部材１０４の端面１０４ｂとを突き合わせる。これにより、突合せ部Ｊ１１５が形成される。さらに、同様の手順により右側の連結部材１０２と板状部材１０４，１０４とを突合せる。これにより、突合せ部Ｊ１１４，Ｊ１１８が形成される。 In the method for manufacturing a hollow structure according to the third embodiment, a butt process and a friction stirring process are performed. In the butting process according to the third embodiment, the connecting members 102 and 103 and the plate-like member 104 are butted. Specifically, the end surface 102 d of the extending portion 102 b of the left connecting member 102 and the end surface 104 b of the plate-like member 104 are abutted against each other. Thereby, the butt | matching part J111 is formed. Further, the end surface 102 e of the extending portion 102 c of the left connection member 102 and the end surface 104 b of the plate-like member 104 are abutted against each other. Thereby, the butt | matching part J115 is formed. Further, the right connecting member 102 and the plate- like members 104 and 104 are brought into contact with each other by the same procedure. Thereby, the butt | matching parts J114 and J118 are formed.
　また、第三実施形態に係る突合せ工程では、連結部材１０３の延設部１０３ｂの左側の端面１０３ｇと、板状部材１０４の端面１０４ａとを突き合わせる。これにより、突合せ部Ｊ１１２が形成される。また、連結部材１０３の延設部１０３ｃの左側の端面１０３ｅと板状部材１０４の端面１０４ａとを突き合わせる。これにより、突合せ部Ｊ１１６が形成される。さらに、同様の手順により延設部１０３ｂの右側の端面１０３ｄ及び延設部１０３ｃの右側の端面１０３ｆと板状部材１０４の端面１０４ｂ，１０４ｂとをそれぞれ突き合わせて突合せ部Ｊ１１３，Ｊ１１７を形成する。各端面を突き合わせたら、前記した受け部材及び押圧部材を含む固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 In the butting process according to the third embodiment, the left end surface 103g of the extending portion 103b of the connecting member 103 and the end face 104a of the plate-like member 104 are butted. Thereby, the butt | matching part J112 is formed. Further, the left end surface 103 e of the extending portion 103 c of the connecting member 103 and the end surface 104 a of the plate-like member 104 are butted together. Thereby, the butt | matching part J116 is formed. Further, the right end surface 103d of the extending portion 103b and the right end surface 103f of the extending portion 103c are aligned with the end surfaces 104b and 104b of the plate-like member 104 by the same procedure, thereby forming the abutting portions J113 and J117. When each end face is abutted, each member is clamped and restrained so as not to move by using a fixing jig (not shown) including the receiving member and the pressing member.
　第三実施形態に係る摩擦攪拌工程は、第一実施形態に係る第一工程の摩擦攪拌工程と略同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１１１～Ｊ１１８を摩擦攪拌接合する。 In the friction stir process according to the third embodiment, the abutting portions J111 to J118 are friction stir welded using the bobbin tool 31 in substantially the same manner as the friction stir process of the first process according to the first embodiment.
　以上説明した、第三実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第三実施形態に係る中空構造物の製造方法によれば、断面矩形を呈する中空部Ｍ，Ｍを備えた中空構造物１０１を容易に形成することができる。また、断面Ｕ字状の連結部材１０２，１０２を用いるとともに、断面Ｉ字状の連結部材１０３を用いることにより少ない部品点数で中空構造物１０１を形成することができる。 The above-described method for manufacturing a hollow structure according to the third embodiment can also provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the third embodiment, it is possible to easily form the hollow structure 101 including the hollow portions M and M having a rectangular cross section. Moreover, the hollow structure 101 can be formed with a small number of parts by using the connecting members 102 and 102 having a U-shaped cross section and using the connecting member 103 having an I-shaped cross section.
　なお、第三実施形態において、連結部材１０２は、例えば、断面Ｌ字状を呈する一対の連結部材で構成してもよい。また、連結部材１０３は、例えば、断面Ｔ字状を呈する一対の連結部材で構成してもよい。また、板状部材１０４を省略して、連結部材１０２，１０２，１０３同士を直接接合して２つの中空部Ｍ，Ｍを備えた中空構造物を形成してもよい。 In addition, in 3rd embodiment, you may comprise the connection member 102 by a pair of connection member which exhibits cross-sectional L shape, for example. Further, the connecting member 103 may be constituted by a pair of connecting members having a T-shaped cross section, for example. Further, the plate-like member 104 may be omitted, and the connecting members 102, 102, 103 may be directly joined together to form a hollow structure including two hollow portions M, M.
［第四実施形態］
　第四実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図１２に示すように、第四実施形態に係る中空構造物１１１は、３つの断面Ｉ字状の連結部材１０３と、４つの板状部材１０４とで構成されている。中空構造物１１１は、中央の連結部材１０３を挟んで断面矩形の中空部Ｍ，Ｍが形成されている。 [Fourth embodiment]
A hollow structure according to the fourth embodiment and a method for manufacturing the hollow structure will be described. As shown in FIG. 12, the hollow structure 111 according to the fourth embodiment includes three connection members 103 having an I-shaped cross section and four plate-like members 104. The hollow structure 111 is formed with hollow portions M and M having a rectangular cross section with the central connecting member 103 interposed therebetween.
　第四実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。第四実施形態に係る突合せ工程では、第三実施形態と同じ要領で、３つの断面Ｉ字状の連結部材１０３と、４つの板状部材との各端面を突き合わせる。これにより、突合せ部Ｊ１２１，Ｊ１２２，Ｊ１２３，Ｊ１２４，Ｊ１２５，Ｊ１２６，Ｊ１２７，Ｊ１２８が形成される。各端面を突き合わせたら、受け部材及び押圧部材を含む固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 In the method for manufacturing a hollow structure according to the fourth embodiment, a butt process and a friction stirring process are performed. In the butting process according to the fourth embodiment, the end faces of the three connecting members 103 having an I-shaped cross section and the four plate-like members are butted in the same manner as in the third embodiment. Thereby, the butt | matching part J121, J122, J123, J124, J125, J126, J127, J128 is formed. When each end face is abutted, each member is clamped using a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
　第四実施形態に係る摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と略同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１２１～Ｊ１２８を摩擦攪拌接合する。 In the friction stir process according to the fourth embodiment, the abutting portions J121 to J128 are friction stir welded using the bobbin tool 31 in substantially the same manner as the friction stir process of the first process according to the first embodiment.
　以上説明した、第四実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第四実施形態に係る中空構造物の製造方法によれば、断面矩形を呈する中空部Ｍ，Ｍを備えた中空構造物１１１を容易に形成することができる。また、３つの断面Ｉ字状の連結部材１０３を用いることにより少ない部品点数で中空構造物１１１を形成することができる。 The above-described method for manufacturing a hollow structure according to the fourth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the fourth embodiment, it is possible to easily form the hollow structure 111 including the hollow portions M and M having a rectangular cross section. Moreover, the hollow structure 111 can be formed with a small number of parts by using the connecting member 103 having three I-shaped cross sections.
　なお、第四実施形態において、連結部材１０３は、例えば、断面Ｔ字状を呈する一対の連結部材で構成してもよい。また、板状部材１０４を省略して、３つの連結部材１０３同士を直接接合して断面矩形の２つの中空部Ｍ，Ｍを備えた中空構造物を形成してもよい。 In addition, in 4th embodiment, the connection member 103 may be comprised with a pair of connection member which exhibits cross-sectional T shape, for example. Alternatively, the plate-like member 104 may be omitted, and the three connecting members 103 may be directly joined together to form a hollow structure including two hollow portions M and M having a rectangular cross section.
　第一実施形態～第四実施形態に係る中空構造物の製造方法によれば、断面Ｔ字状、断面Ｌ字状、断面Ｕ字状又は断面Ｉ字状の連結部材の少なくともいずれか一つの連結部材を用いて断面矩形の中空部を備えた中空構造物を容易に形成することができる。また、必要に応じて板状部材を連結することで中空構造物の大きさを適宜変更することができる。 According to the method for manufacturing a hollow structure according to the first to fourth embodiments, at least one of the connection members having a T-shaped section, an L-shaped section, a U-shaped section, or an I-shaped section is connected. A hollow structure including a hollow portion having a rectangular cross section can be easily formed using the member. Moreover, the magnitude | size of a hollow structure can be suitably changed by connecting a plate-shaped member as needed.
［第五実施形態］
　次に、本発明の第五実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図１３に示すように、第五実施形態に係る中空構造物（ダブルスキンパネル）１Ａは、複数の連結部材１９と、複数の板状部材４６～４８とで構成されている。中空構造物１Ａは、断面三角形（二等辺三角形）を呈する複数の中空部Ｍ１を備えている。隣り合う中空部Ｍ１，Ｍ１は、上下方向に逆さまになるように形成されている。 [Fifth embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the fifth embodiment of the present invention will be described. As shown in FIG. 13, the hollow structure (double skin panel) 1A according to the fifth embodiment is composed of a plurality of connecting members 19 and a plurality of plate-like members 46 to 48. The hollow structure 1A includes a plurality of hollow portions M1 having a triangular cross section (isosceles triangle). The adjacent hollow portions M1, M1 are formed so as to be upside down.
　連結部材１９は、図１４に示すように、板状を呈する基部１９ａと、基部１９ａの一方の側面から斜めに延設された一対の板状の延設部１９ｂ，１９ｃとで構成されている。連結部材１９は、押出成形によって形成された押出形材である。 As shown in FIG. 14, the connecting member 19 includes a plate-like base portion 19a and a pair of plate-like extending portions 19b and 19c extending obliquely from one side surface of the base portion 19a. . The connecting member 19 is an extruded shape formed by extrusion.
　第五実施形態に係る中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程とを行う。第五実施形態に係る第一工程は、下側に配置される連結部材１９と板状部材４６とを接合する工程である。第五実施形態に係る第一工程では、突合せ工程と、摩擦攪拌工程とを行う。 In the method for manufacturing a hollow structure according to the fifth embodiment, the first step, the second step, the third step, and the fourth step are performed. The first step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 46 arranged on the lower side. In the first process according to the fifth embodiment, a butting process and a friction stirring process are performed.
　第五実施形態に係る第一工程の突合せ工程では、図１５に示すように、連結部材１９の基部１９ａの端面１９ｄと板状部材４６の端面４６ｂとを突き合わせる。これにより、突合せ部Ｊ２１が形成される。また、連結部材１９の基部１９ａの端面１９ｅと板状部材４６の端面４６ａとを突き合わせる。これにより、突合せ部Ｊ２２が形成される。 In the first matching step according to the fifth embodiment, as shown in FIG. 15, the end surface 19 d of the base 19 a of the connecting member 19 and the end surface 46 b of the plate-like member 46 are butted. Thereby, the butt | matching part J21 is formed. Further, the end surface 19 e of the base portion 19 a of the connecting member 19 and the end surface 46 a of the plate-like member 46 are abutted against each other. Thereby, the butt | matching part J22 is formed.
　第五実施形態に係る第一工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ２１，Ｊ２２を摩擦攪拌接合する。 In the friction stirring step of the first step according to the fifth embodiment, the butt joints J21 and J22 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment. .
　第五実施形態に係る第二工程は、下側に配置される連結部材１９と板状部材４７とを接合する工程である。第五実施形態に係る第二工程では、突合せ工程と、摩擦攪拌工程とを行う。第二工程の突合せ工程では、連結部材１９の延設部１９ｂの端面１９ｆと板状部材４７の端面４７ａとを突き合わせる。これにより、突合せ部Ｊ２３が形成される。また、第五実施形態に係る第二工程の突合せ工程では、連結部材１９の延設部１９ｃの端面１９ｇと板状部材４７の端面４７ａとを突き合わせる。これにより、突合せ部Ｊ２４が形成される。 The second step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 47 arranged on the lower side. In the second step according to the fifth embodiment, a butting step and a friction stirring step are performed. In the butting step of the second step, the end surface 19 f of the extending portion 19 b of the connecting member 19 and the end surface 47 a of the plate-like member 47 are butted. Thereby, the butt | matching part J23 is formed. Further, in the butting step of the second step according to the fifth embodiment, the end surface 19 g of the extending portion 19 c of the connecting member 19 and the end surface 47 a of the plate-like member 47 are butted. Thereby, the butt | matching part J24 is formed.
　第五実施形態に係る第二工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ２３，Ｊ２４を摩擦攪拌接合する。 In the friction stirring step of the second step according to the fifth embodiment, the butt joints J23 and J24 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment. .
　第五実施形態に係る第三工程は、図１６に示すように、上側に配置される連結部材１９と板状部材４７とを接合する工程である。第五実施形態に係る第三工程では、突合せ工程と、摩擦攪拌工程とを行う。第三工程の突合せ工程では、連結部材１９の延設部１９ｂの端面１９ｆと板状部材４７の端面４７ｂとを突き合わせる。これにより、突合せ部Ｊ２５が形成される。また、第三工程の突合せ工程では、連結部材１９の延設部１９ｃの端面１９ｇと板状部材４７の端面４７ｂとを突き合わせる。これにより、突合せ部Ｊ２６が形成される。 The third step according to the fifth embodiment is a step of joining the connecting member 19 and the plate-like member 47 arranged on the upper side as shown in FIG. In the third step according to the fifth embodiment, a butting step and a friction stirring step are performed. In the butting step of the third step, the end surface 19 f of the extending portion 19 b of the connecting member 19 and the end surface 47 b of the plate-like member 47 are butted. Thereby, the butt | matching part J25 is formed. Moreover, in the butting process of the third process, the end surface 19 g of the extending portion 19 c of the connecting member 19 and the end surface 47 b of the plate-like member 47 are butted. Thereby, the butt | matching part J26 is formed.
　第五実施形態に係る第三工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ２５，Ｊ２６を摩擦攪拌接合する。 In the friction stirring step of the third step according to the fifth embodiment, the friction stirring step of the first step according to the first embodiment is performed in the same manner, and the abutting portions J25 and J26 are friction stir welded using the bobbin tool 31. .
　第五実施形態に係る第四工程は、上側に配置される連結部材１９と板状部材４８とを接合する工程である。第五実施形態に係る第四工程は、突合せ工程と、摩擦攪拌工程とを行う。第四工程の突合せ工程では、連結部材１９の基部１９ａの端面１９ｄと板状部材４８の端面４８ａとを突き合わせる。これにより、突合せ部Ｊ２７が形成される。また、第四工程の突合せ工程では、連結部材１９の基部１９ａの端面１９ｅと板状部材４８の端面４８ｂとを突き合わせる。これにより、突合せ部Ｊ２８が形成される。各端面を突き合わせたら、固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 The fourth step according to the fifth embodiment is a step of joining the connecting member 19 and the plate member 48 arranged on the upper side. In the fourth step according to the fifth embodiment, a butting step and a friction stirring step are performed. In the fourth butting step, the end surface 19 d of the base portion 19 a of the connecting member 19 and the end surface 48 a of the plate-like member 48 are butted. Thereby, the butt | matching part J27 is formed. Further, in the fourth butting step, the end surface 19 e of the base portion 19 a of the connecting member 19 and the end surface 48 b of the plate-like member 48 are butted. Thereby, the butt | matching part J28 is formed. When the end faces are brought into contact with each other, the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
　第五実施形態に係る第四工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ２７，Ｊ２８を摩擦攪拌接合する。 In the friction stirring step of the fourth step according to the fifth embodiment, the friction stirring step of the first step according to the first embodiment is performed in the same manner, and the abutting portions J27 and J28 are friction stir welded using the bobbin tool 31. .
　以上説明した、第五実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第五実施形態に係る中空構造物の製造方法によれば、断面三角形を呈する中空部を備えた中空構造物（ダブルスキンパネル）１Ａを容易に形成することができる。 The above-described method for manufacturing the hollow structure according to the fifth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the fifth embodiment, it is possible to easily form a hollow structure (double skin panel) 1A having a hollow portion having a triangular cross section.
［第五実施形態の変形例］
　次に、本発明の第五実施形態の変形例に係る中空構造物及び中空構造物の製造方法について説明する。図１７に示すように、第五実施形態の変形例に係る中空構造物（ダブルスキンパネル）１Ｂは、下側に配置される複数の連結部材１９と、複数の板状部材４６，４７，４８で構成されている。中空構造物１Ｂは、断面三角形（二等辺三角形）を呈する複数の中空部Ｍ１を備えている。中空構造物１Ｂは、板状部材４７の端面４７ｂが、板状部材４８の裏面に当接している点で第五実施形態の中空構造物１Ａと相違する。言い換えると、第五実施形態の変形例は、中空構造物１Ｂの上側に連結部材１９が配置されていない点で第五実施形態と相違する。 [Modification of Fifth Embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to a modification of the fifth embodiment of the present invention will be described. As shown in FIG. 17, a hollow structure (double skin panel) 1B according to a modification of the fifth embodiment includes a plurality of connecting members 19 disposed on the lower side and a plurality of plate- like members 46, 47, 48. It consists of The hollow structure 1B includes a plurality of hollow portions M1 having a cross-sectional triangle (isosceles triangle). The hollow structure 1B is different from the hollow structure 1A of the fifth embodiment in that the end surface 47b of the plate-like member 47 is in contact with the back surface of the plate-like member 48. In other words, the modified example of the fifth embodiment is different from the fifth embodiment in that the connecting member 19 is not disposed on the upper side of the hollow structure 1B.
　第五実施形態の変形例に係る中空構造物の製造方法は、第一工程と、第二工程と、第三工程とを行う。当該変形例に係る第一工程及び第二工程は、前記した第五実施形態に係る第一工程及び第二工程と同一であるため説明を省略する。 The method for manufacturing a hollow structure according to the modification of the fifth embodiment includes a first step, a second step, and a third step. Since the first step and the second step according to the modification are the same as the first step and the second step according to the fifth embodiment described above, description thereof is omitted.
　第五実施形態の変形例に係る第三工程は、一対の板状部材４７，４７と、一対の板状部材４８，４８とを接合する工程である。第五実施形態の変形例に係る第三工程は、突合せ工程と、摩擦攪拌工程とを行う。変形例に係る突合せ工程では、板状部材４８の端面４８ａと、板状部材４８の端面４８ｂとを突き合わせる。また、変形例に係る突合せ工程では、一対の板状部材４７の端面４７ｂを板状部材４８，４８の各裏面に突き合わせるとともに、一対の板状部材４７の側端面４７ｃ，４７ｃ同士を突き合わせる。側端面４７ｃは、端面４７ｂに対して垂直になっている。板状部材４７は、端面４７ｂが板状部材４８の裏面に面接触するように斜めにカットするとともに、側端面４７ｃが形成されるようにカットする。変形例に係る突合せ工程では、一対の板状部材４８（４８ａ，４８ｂ）同士と、一対の板状部材４７（４７ｃ，４７ｃ）同士と、一対の板状部材４７（４７ｂ）と一対の板状部材４８（板状部材４８の裏面）とがそれぞれ突き合わされて突合せ部Ｊ３０が形成される。 The third step according to the modification of the fifth embodiment is a step of joining the pair of plate members 47 and 47 and the pair of plate members 48 and 48 together. In the third step according to the modification of the fifth embodiment, a butt step and a friction stirring step are performed. In the butting process according to the modified example, the end surface 48 a of the plate-like member 48 and the end surface 48 b of the plate-like member 48 are butted. In the butting process according to the modification, the end surfaces 47b of the pair of plate members 47 are butted against the back surfaces of the plate members 48 and 48, and the side end surfaces 47c and 47c of the pair of plate members 47 are butted together. . The side end face 47c is perpendicular to the end face 47b. The plate-like member 47 is cut obliquely so that the end surface 47b is in surface contact with the back surface of the plate-like member 48, and is cut so that the side end surface 47c is formed. In the butting process according to the modification, the pair of plate-like members 48 (48a, 48b), the pair of plate-like members 47 (47c, 47c), the pair of plate-like members 47 (47b), and the pair of plate-like members. The member 48 (the back surface of the plate-like member 48) is abutted with each other to form the abutting portion J30.
　第五実施形態の変形例に係る摩擦攪拌工程では、ボビンツール３１を用いて各突合せ部Ｊ３０を摩擦攪拌接合する工程である。当該摩擦攪拌工程では、ボビンツール３１の下部ショルダ３２の平端部３２ｃ（図２参照）を板状部材４７，４７に接触させつつ、上部ショルダ３３の平端部３３ｃを板状部材４８，４８に接触させながら摩擦攪拌接合を行う。これにより、板状部材４７，４７，４８，４８が接合される。なお、必要に応じてボビンツール３１の下部ショルダ３２を、上部ショルダ３３よりも小さくしてもよい。 The friction stir process according to the modified example of the fifth embodiment is a process of friction stir welding each butt portion J30 using the bobbin tool 31. In the friction stirring step, the flat end portion 32c (see FIG. 2) of the lower shoulder 32 of the bobbin tool 31 is brought into contact with the plate- like members 47 and 47, and the flat end portion 33c of the upper shoulder 33 is brought into contact with the plate- like members 48 and 48. Friction stir welding is performed. Thereby, the plate-shaped members 47, 47, 48, 48 are joined. Note that the lower shoulder 32 of the bobbin tool 31 may be made smaller than the upper shoulder 33 as necessary.
　以上説明した第五実施形態に係る変形例でも第五実施形態と略同等の効果を奏することができる。また、第五実施形態の変形例に係る第三工程では、板状部材４７，４７同士、板状部材４８，４８同士、さらには、板状部材４７，４８を一度に摩擦攪拌接合できるため、作業効率を高めることができる。なお、当該変形例では、中空構造物１Ｂの下側には連結部材１９を用いたが、下側の連結部材１９も省略して、上側と同じように突き合わせて摩擦攪拌接合を行ってもよい。 Even in the modified example according to the fifth embodiment described above, substantially the same effect as that of the fifth embodiment can be obtained. Further, in the third step according to the modified example of the fifth embodiment, the plate- like members 47, 47, the plate- like members 48, 48, and further, the plate- like members 47, 48 can be friction stir welded at a time, Work efficiency can be increased. In the modified example, the connecting member 19 is used on the lower side of the hollow structure 1B. However, the lower connecting member 19 may be omitted, and the friction stir welding may be performed in the same manner as the upper side. .
［第六実施形態］
　次に、本発明の第六実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図１８に示すように、第六実施形態に係る中空構造物（ダブルスキンパネル）１２１は、断面三角形（二等辺三角形）を呈する複数の中空部Ｍ１を備えている。隣り合う中空部Ｍ１，Ｍ１は上下方向に逆さまになるように形成されている。中空構造物１２１は、板状部材を備えていない点で第五実施形態の中空構造物１Ａと相違する。 [Sixth embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the sixth embodiment of the present invention will be described. As shown in FIG. 18, the hollow structure (double skin panel) 121 according to the sixth embodiment includes a plurality of hollow portions M <b> 1 having a triangular cross section (isosceles triangle). Adjacent hollow portions M1, M1 are formed to be upside down. The hollow structure 121 is different from the hollow structure 1A of the fifth embodiment in that it does not include a plate-like member.
　第六実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。第六実施形態に係る突合せ工程では、隣り合う連結部材１９，１９同士を上下に連続して突き合わせる。詳しくは、下側に配置された連結部材１９の基部１９ａの端面１９ｄと、隣り合う基部１９ａの端面１９ｅとを突き合わせる。これにより、突合せ部Ｊ１２０が形成される。 In the method for manufacturing a hollow structure according to the sixth embodiment, a butt process and a friction stirring process are performed. In the butting process according to the sixth embodiment, the adjacent connecting members 19 and 19 are butted continuously up and down. Specifically, the end surface 19d of the base portion 19a of the connecting member 19 disposed on the lower side is abutted against the end surface 19e of the adjacent base portion 19a. Thereby, the butt | matching part J120 is formed.
　また、下側に配置された連結部材１９の延設部１９ｂの端面１９ｆと、上側に配置された連結部材１９の延設部１９ｂの端面１９ｆとを突き合わせる。これにより、突合せ部Ｊ１２２が形成される。同様に、下側に配置された連結部材１９の延設部１９ｃの端面１９ｇと、上側に配置された連結部材１９の延設部１９ｃの端面１９ｇとを突き合わせる。これにより、突合せ部Ｊ１２２が形成される。また、上側に配置された連結部材１９の基部１９ａの端面１９ｄと、隣り合う基部１９ａの端面１９ｅとを突き合わせる。これにより、突合せ部Ｊ１２１が形成される。複数の連結部材１９を上下に連続して突き合わせて、複数の突合せ部Ｊ１２０，Ｊ１２１，Ｊ１２２が形成される。各端面を突き合わせたら、固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 Also, the end surface 19f of the extending portion 19b of the connecting member 19 disposed on the lower side is abutted against the end surface 19f of the extending portion 19b of the connecting member 19 disposed on the upper side. Thereby, the butt | matching part J122 is formed. Similarly, the end surface 19g of the extending portion 19c of the connecting member 19 disposed on the lower side is abutted against the end surface 19g of the extending portion 19c of the connecting member 19 disposed on the upper side. Thereby, the butt | matching part J122 is formed. Moreover, the end surface 19d of the base part 19a of the connection member 19 arrange | positioned at the upper side and the end surface 19e of the adjacent base part 19a are faced | matched. Thereby, the butt | matching part J121 is formed. A plurality of butted portions J120, J121, and J122 are formed by continuously butting the plurality of connecting members 19 up and down. When the end faces are brought into contact with each other, the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
　第六実施形態に係る摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１２０，Ｊ１２１，Ｊ１２２を摩擦攪拌接合する。 In the friction stir process according to the sixth embodiment, the butt portions J120, J121, J122 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
　以上説明した、第六実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第六実施形態に係る中空構造物の製造方法によれば、板状部材を用いずに、連結部材１９を連結して断面三角形を呈する中空部を備えた中空構造物（ダブルスキンパネル）１２１を容易に形成することができる。 The above-described method for manufacturing the hollow structure according to the sixth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the sixth embodiment, a hollow structure (double skin panel) 121 including a hollow portion that has a triangular cross-section by connecting the connection member 19 without using a plate-like member is provided. It can be formed easily.
［第七実施形態］
　次に、第七実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図１９に示すように、第七実施形態に係る中空構造物１Ｃは、複数（４つ）の連結部材５１と、複数の板状部材５２，５３，５５，５６と、２つの角部材５４とで構成されている。中空構造物１Ｃは、断面三角形（直角三角形）を呈する複数の中空部Ｍ３を備えている。上下に隣り合う中空部Ｍ３，Ｍ３によって、断面矩形を呈するように形成されている。 [Seventh embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the seventh embodiment will be described. As shown in FIG. 19, the hollow structure 1 </ b> C according to the seventh embodiment includes a plurality (four) of connecting members 51, a plurality of plate- like members 52, 53, 55, 56, two corner members 54, It consists of The hollow structure 1C includes a plurality of hollow portions M3 having a triangular cross section (right triangle). The hollow portions M3 and M3 that are adjacent to each other in the vertical direction are formed to have a rectangular cross section.
　連結部材５１は、図２０に示すように、板状を呈する基部５１ａと、基部５１ａの一方の側面から垂直に延設された板状の延設部５１ｂと、基部５１ａの一方の側面から斜めに延設された板状の延設部５１ｃとで構成されている。つまり、延設部５１ｃは、基部５１ａと延設部５１ｂの内隅から斜めに延設されている。連結部材５１は、押出成形によって成形された押出形材である。図１９に示す４つの連結部材５１は、すべて同じ形状である。以下の説明では、連結部材５１Ａ，５１Ｂ，５１Ｃ，５１Ｄと符号を付して区別する。 As shown in FIG. 20, the connecting member 51 includes a base 51a having a plate shape, a plate-like extension 51b extending vertically from one side of the base 51a, and a diagonal from one side of the base 51a. And a plate-like extending portion 51c extending in the direction. That is, the extending part 51c is extended obliquely from the inner corners of the base part 51a and the extending part 51b. The connecting member 51 is an extruded shape member formed by extrusion molding. The four connecting members 51 shown in FIG. 19 have the same shape. In the following description, the connection members 51A, 51B, 51C, and 51D are identified with reference numerals.
　第七実施形態に係る中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程と、第五工程とを行う。第七実施形態に係る第一工程は、連結部材５１，５１と、板状部材５２とを接合する工程である。第七実施形態に係る第一工程では、突合せ工程と、摩擦攪拌工程とを行う。 In the method for manufacturing a hollow structure according to the seventh embodiment, the first step, the second step, the third step, the fourth step, and the fifth step are performed. The first step according to the seventh embodiment is a step of joining the connecting members 51, 51 and the plate-like member 52. In the first process according to the seventh embodiment, a butting process and a friction stirring process are performed.
　第七実施形態に係る第一工程の突合せ工程では、図２１に示すように、連結部材５１Ａの延設部５１ｃの端面５１ｇと、板状部材５２の端面５２ａとを突き合わせる。これにより、突合せ部Ｊ５１が形成される。また、連結部材５１Ｂの延設部５１ｃの端面５１ｇと、板状部材５２の端面５２ｂとを突き合わせる。これにより、突合せ部Ｊ５２が形成される。 In the first matching step according to the seventh embodiment, the end surface 51g of the extending portion 51c of the connecting member 51A and the end surface 52a of the plate-like member 52 are butted as shown in FIG. Thereby, the butt | matching part J51 is formed. Further, the end surface 51g of the extending portion 51c of the connecting member 51B and the end surface 52b of the plate-like member 52 are abutted against each other. Thereby, the butt | matching part J52 is formed.
　第一工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ５１，Ｊ５２を摩擦攪拌接合する。 In the friction stirring step of the first step, the butt portions J51 and J52 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
　第七実施形態に係る第二工程は、連結部材５１と、板状部材５３とを接合する工程である。第七実施形態に係る第二工程では、突合せ工程と、摩擦攪拌工程とを行う。 The second step according to the seventh embodiment is a step of joining the connecting member 51 and the plate-like member 53. In the second process according to the seventh embodiment, a butting process and a friction stirring process are performed.
　第七実施形態に係る第二工程の突合せ工程では、図２２に示すように、連結部材５１Ａの延設部５１ｂの端面５１ｆと板状部材５３の端面５３ａとを突き合わせる。これにより、突合せ部Ｊ５３が形成される。また、第二工程の突合せ工程では、連結部材５１Ｂの延設部５１ｂの端面５１ｆと板状部材５３の端面５３ｂとを突き合わせる。これにより、突合せ部Ｊ５４が形成される。 In the second matching step according to the seventh embodiment, the end surface 51f of the extending portion 51b of the connecting member 51A and the end surface 53a of the plate-like member 53 are butted as shown in FIG. Thereby, the butt | matching part J53 is formed. Moreover, in the butting process of the second process, the end face 51f of the extending portion 51b of the connecting member 51B and the end face 53b of the plate-like member 53 are butted. Thereby, the butt | matching part J54 is formed.
　第二工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ５３，Ｊ５４を摩擦攪拌接合する。 In the friction stirring step of the second step, the butt joints J53 and J54 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
　第七実施形態に係る第三工程は、板状部材５３と角部材５４とを接合するとともに、板状部材５３と連結部材５１Ｃとを接合する工程である。第七実施形態に係る第三工程では、突合せ工程と、摩擦攪拌工程とを行う。角部材５４は、板状の基部５４ａと、基部５４ａの一方の側面から垂直に延設された延設部５４ｂとで構成されている。 The third step according to the seventh embodiment is a step of joining the plate member 53 and the corner member 54 and joining the plate member 53 and the connecting member 51C. In the third step according to the seventh embodiment, a butting step and a friction stirring step are performed. The corner member 54 includes a plate-like base portion 54a and an extending portion 54b extending perpendicularly from one side surface of the base portion 54a.
　第七実施形態に係る第三工程の突合せ工程では、図１９に示すように、板状部材５３の端面５３ｂと、角部材５４の延設部５４ｂの端面５４ｅとを突き合わせる。これにより、突合せ部Ｊ５５が形成される。また、第三工程の突合せ工程では、板状部材５３の端面５３ａと、連結部材５１Ｃの延設部５１ｂの端面５１ｆとを突き合わせる。これにより、突合せ部Ｊ５６が形成される。各端面を突き合わせたら、固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 In the third matching step according to the seventh embodiment, as shown in FIG. 19, the end surface 53b of the plate-like member 53 and the end surface 54e of the extending portion 54b of the corner member 54 are butted. Thereby, the butt | matching part J55 is formed. In the third butting step, the end surface 53a of the plate-like member 53 and the end surface 51f of the extending portion 51b of the connecting member 51C are butted. Thereby, the butt | matching part J56 is formed. When the end faces are brought into contact with each other, the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
　第三工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ５５，Ｊ５６を摩擦攪拌接合する。 In the friction stirring step of the third step, the butt portions J55 and J56 are friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the first embodiment.
　第七実施形態の第四工程は、連結部材５１Ａ，５１Ｃと板状部材５５とを接合する工程である。第七実施形態に係る第四工程では、突合せ工程と、摩擦攪拌工程を行う。 The fourth step of the seventh embodiment is a step of joining the connecting members 51A and 51C and the plate-like member 55. In the fourth process according to the seventh embodiment, a butt process and a friction stirring process are performed.
　第七実施形態に係る第四工程の突合せ工程では、図２３に示すように、板状部材５５の端面５５ａと、連結部材５１Ａの基部５１ａの端面５１ｄとを突き合わせる。これにより、突合せ部Ｊ５７が形成される。また、第四工程の突合せ工程では、板状部材５５の端面５５ｂと連結部材５１Ｃの基部５１ａの端面５１ｅとを突き合わせる。これにより、突合せ部Ｊ５８が形成される。 In the fourth matching step according to the seventh embodiment, as shown in FIG. 23, the end surface 55a of the plate-like member 55 and the end surface 51d of the base portion 51a of the connecting member 51A are butted. Thereby, the butt | matching part J57 is formed. In the fourth butting step, the end surface 55b of the plate-like member 55 and the end surface 51e of the base portion 51a of the connecting member 51C are butted. Thereby, the butt | matching part J58 is formed.
　第七実施形態に係る第四工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ５７，Ｊ５８を摩擦攪拌接合する。 In the friction stirring step of the fourth step according to the seventh embodiment, the friction stirring step of the first step according to the first embodiment is performed in the same manner, and the abutting portions J57 and J58 are friction stir welded using the bobbin tool 31. .
　第七実施形態に係る第五工程は、連結部材５１Ｂと、角部材５４と、板状部材５６とを接合する工程である。第七実施形態に係る第五工程では、突合せ工程と、摩擦攪拌工程とを行う。 The fifth step according to the seventh embodiment is a step of joining the connecting member 51B, the corner member 54, and the plate-like member 56. In the fifth step according to the seventh embodiment, a butting step and a friction stirring step are performed.
　第七実施形態に係る第五工程の突合せ工程では、図２３に示すように、連結部材５１Ｂの基部５１ａの端面５１ｄと、板状部材５６の端面５６ａとを突き合わせる。これにより、突合せ部Ｊ５９が形成される。また、第五工程の突合せ工程では、角部材５４の基部５４ａの端面５４ｃと、板状部材５６の端面５６ｂとを突き合わせる。これにより、突合せ部Ｊ６０が形成される。 In the fifth matching step according to the seventh embodiment, as shown in FIG. 23, the end surface 51d of the base 51a of the connecting member 51B and the end surface 56a of the plate-like member 56 are butted together. Thereby, the butt | matching part J59 is formed. In the fifth butting step, the end surface 54c of the base 54a of the corner member 54 and the end surface 56b of the plate-like member 56 are butted. Thereby, the butt | matching part J60 is formed.
　第五工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ５９，Ｊ６０を摩擦攪拌接合する。図２３に示すように、第一工程～第五工程では２つの中空部Ｍ３，Ｍ３を備えた中空構造物が形成されたが、当該中空構造物の右側に、第一工程～第五工程と略同等の工程を繰り返すことにより、図１９に示す中空構造物１Ｃが形成される。 In the fifth friction agitation step, the butt joints J59 and J60 are friction agitation joined using the bobbin tool 31 in the same manner as the first friction agitation step according to the first embodiment. As shown in FIG. 23, a hollow structure having two hollow portions M3 and M3 was formed in the first process to the fifth process, but the first process to the fifth process are arranged on the right side of the hollow structure. By repeating substantially the same process, the hollow structure 1C shown in FIG. 19 is formed.
　以上説明した、第七実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第七実施形態の中空構造物１Ｃのように、中空構造物１Ｃのうち、斜めに配設される板状部材５２を連結部材５１，５１で連結するとともに、角部材５４，５４を用いてもよい。 The above-described method for manufacturing the hollow structure according to the seventh embodiment can provide substantially the same effect as that of the first embodiment. As in the hollow structure 1C of the seventh embodiment, the plate-like member 52 disposed obliquely in the hollow structure 1C is connected by the connecting members 51, 51, and the square members 54, 54 are used. Good.
［第八実施形態］
　次に、第八実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図２４に示すように、第八実施形態に係る中空構造物１３１は、連結部材１３２，１３３の２つで構成されている。中空構造物１３１は、断面三角形（直角三角形）を呈する複数の中空部Ｍ３を備えている。上下に隣り合う中空部Ｍ３，Ｍ３によって、断面矩形を呈するように形成されている。 [Eighth embodiment]
Next, a hollow structure according to the eighth embodiment and a method for manufacturing the hollow structure will be described. As shown in FIG. 24, the hollow structure 131 according to the eighth embodiment includes two connecting members 132 and 133. The hollow structure 131 includes a plurality of hollow portions M3 having a triangular cross section (right triangle). The hollow portions M3 and M3 that are adjacent to each other in the vertical direction are formed to have a rectangular cross section.
　連結部材１３２は、板状を呈する基部１３２ａと、基部１３２ａの一端側から基部１３２ａに対して垂直に延設された板状の延設部１３２ｂと、他端側から基部１３２ａに対して垂直に延設された板状の延設部１３２ｃと、基部１３２ａと延設部１３２ｂの間から斜めに延設された板状の延設部１３２ｄとで構成されている。連結部材１３２は、押出成形によって成形された押出形材である。 The connecting member 132 includes a base portion 132a having a plate shape, a plate-like extension portion 132b extending perpendicularly to the base portion 132a from one end side of the base portion 132a, and a base portion 132a perpendicular to the other end side. The plate-like extension portion 132c is extended, and the plate-like extension portion 132d is formed to extend obliquely from between the base portion 132a and the extension portion 132b. The connecting member 132 is an extruded shape member formed by extrusion molding.
　連結部材１３３は、連結部材１３２と同等の形状からなる。連結部材１３３は、板状を呈する基部１３３ａと、基部１３３ａの一端側から基部１３３ａに対して垂直に延設された板状の延設部１３３ｂと、他端側から基部１３３ａに対して垂直に延設された板状の延設部１３３ｃと、延設部１３３ｂと基部１３３ａとの間から斜めに延設された板状の延設部１３３ｄとで構成されている。連結部材１３３は、押出成形によって成形された押出形材である。 The connecting member 133 has the same shape as the connecting member 132. The connecting member 133 includes a plate-like base portion 133a, a plate-like extension portion 133b extending perpendicularly to the base portion 133a from one end side of the base portion 133a, and a base portion 133a perpendicular to the other end side. The plate-shaped extending portion 133c is extended, and the plate-shaped extending portion 133d is extended obliquely from between the extended portion 133b and the base portion 133a. The connecting member 133 is an extruded shape member formed by extrusion molding.
　第八実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。第八実施形態に係る突合せ工程では、連結部材１３２と連結部材１３３の各端面を突き合わせる工程である。詳しくは、延設部１３２ｂの端面１３２ｅと、連結部材１３３の端面１３３ｅとを突き合わせる。これにより、突合せ部Ｊ１３１が形成される。また、延設部１３２ｃの端面１３２ｆと、延設部１３３ｂの端面１３３ｆとを突き合わせる。これにより、突合せ部Ｊ１３２が形成される。さらに、延設部１３２ｄの端面１３２ｇと、延設部１３３ｄの端面１３３ｇとを突き合わせる。これにより、突合せ部Ｊ１３３が形成される。各端面を突き合わせたら、固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 In the method for manufacturing a hollow structure according to the eighth embodiment, a butt process and a friction stirring process are performed. In the butting process according to the eighth embodiment, the end surfaces of the connecting member 132 and the connecting member 133 are butted. Specifically, the end surface 132e of the extending portion 132b and the end surface 133e of the connecting member 133 are abutted against each other. Thereby, the butt | matching part J131 is formed. Moreover, the end surface 132f of the extending part 132c and the end surface 133f of the extending part 133b are abutted. Thereby, the butt | matching part J132 is formed. Furthermore, the end surface 132g of the extended part 132d and the end surface 133g of the extended part 133d are abutted. Thereby, the butt | matching part J133 is formed. When the end faces are brought into contact with each other, the respective members are clamped using a fixing jig (not shown) and restrained so as not to move.
　第八実施形態に係る摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１３１，Ｊ１３２，Ｊ１３３を摩擦攪拌接合する。 In the friction stir process according to the eighth embodiment, the butt joints J131, J132, J133 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
　以上説明した、第八実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第八実施形態に係る中空構造物の製造方法によれば、断面三角形を呈する中空部Ｍ３，Ｍ３を備えた中空構造物１３１を容易に形成することができる。また、第八実施形態に係る中空構造物の製造方法によれば、少ない部品点数で中空構造物１３１を形成することができる。 The above-described method for manufacturing the hollow structure according to the eighth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the eighth embodiment, the hollow structure 131 including the hollow portions M3 and M3 having a triangular cross section can be easily formed. Moreover, according to the method for manufacturing a hollow structure according to the eighth embodiment, the hollow structure 131 can be formed with a small number of parts.
［第九実施形態］
　次に、第九実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図２５に示すように、第九実施形態に係る中空構造物１４１は、２つの連結部材１４２，１４２と、２つの断面Ｌ字状の連結部材１４３，１４３と、板状部材１４４とで構成されている。 [Ninth embodiment]
Next, a hollow structure according to the ninth embodiment and a method for manufacturing the hollow structure will be described. As shown in FIG. 25, the hollow structure 141 according to the ninth embodiment includes two connecting members 142, 142, two L-shaped connecting members 143, 143, and a plate-like member 144. ing.
　連結部材１４２は、板状の基部１４２ａと、基部１４２ａに対して垂直に延設された板状の延設部１４２ｂと、基部１４２ａと延設部１４２ｂの間に斜めに延設された板状の延設部１４２ｃとで構成されている。連結部材１４２は、押出成形によって成形された押出形材である。連結部材１４３は、板状の基部１４３ａと、基部１４３ａに対して垂直に延設された延設部１４３ｂとで構成されている。連結部材１４３は、押出成形によって成形された押出形材である。 The connecting member 142 includes a plate-like base 142a, a plate-like extension 142b extending perpendicularly to the base 142a, and a plate-like extension extending obliquely between the base 142a and the extension 142b. The extending portion 142c. The connecting member 142 is an extruded shape member formed by extrusion molding. The connecting member 143 includes a plate-like base portion 143a and an extending portion 143b extending perpendicular to the base portion 143a. The connecting member 143 is an extruded shape member formed by extrusion molding.
　第九実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。突合せ工程では、連結部材１４２，１４２、連結部材１４３，１４３及び板状部材１４４の各端面を突き合わせる工程である。詳しくは、下側の連結部材１４２の基部１４２ａの端面１４２ｄと、下側の連結部材１４３の基部１４３ａの端面１４３ｃとを突き合わせる。これにより、突合せ部Ｊ１４１が形成される。 In the method for manufacturing a hollow structure according to the ninth embodiment, a butt process and a friction stirring process are performed. In the butting process, the end faces of the connecting members 142 and 142, the connecting members 143 and 143, and the plate member 144 are butted. Specifically, the end surface 142d of the base 142a of the lower connecting member 142 and the end surface 143c of the base 143a of the lower connecting member 143 are abutted against each other. Thereby, the butt | matching part J141 is formed.
　また、下側の連結部材１４２の延設部１４２ｂの端面１４２ｆと、上側の連結部材１４３の延設部１４３ｂの端面１４３ｄとを突き合わせる。これにより、突合せ部Ｊ１４２が形成される。さらに、下側の連結部材１４２の延設部１４２ｃの端面１４２ｅと、板状部材１４４の端面１４４ａとを突き合わせる。これにより、突合せ部Ｊ１４３が形成される。最後に、上側の連結部材１４２を突き合わせて、突合せ部Ｊ１４１，Ｊ１４２，Ｊ１４３を形成する。各端面を突き合わせたら、受け部材及び押圧部材を含む固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 Also, the end surface 142f of the extending portion 142b of the lower connecting member 142 and the end surface 143d of the extending portion 143b of the upper connecting member 143 are brought into contact with each other. Thereby, the butt | matching part J142 is formed. Furthermore, the end surface 142e of the extending portion 142c of the lower connecting member 142 and the end surface 144a of the plate-like member 144 are abutted. Thereby, the butt | matching part J143 is formed. Finally, the upper connecting member 142 is butted to form butted portions J141, J142, and J143. When each end face is abutted, each member is clamped using a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
　第九実施形態に係る摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１４１，Ｊ１４１，Ｊ１４２，Ｊ１４２，Ｊ１４３，Ｊ１４３を摩擦攪拌接合する。 In the friction stirring process according to the ninth embodiment, the butt portions J141, J141, J142, J142, J143, and J143 are formed using the bobbin tool 31 in the same manner as the friction stirring process of the first process according to the first embodiment. Friction stir welding.
　以上説明した、第九実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第九実施形態に係る中空構造物の製造方法によれば、断面三角形を呈する中空部Ｍ３，Ｍ３を備えた中空構造物１４１を容易に形成することができる。 The hollow structure manufacturing method according to the ninth embodiment described above can provide substantially the same effect as the first embodiment. According to the method for manufacturing a hollow structure according to the ninth embodiment, the hollow structure 141 including the hollow portions M3 and M3 having a triangular cross section can be easily formed.
［第十実施形態］
　次に、第十実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図２６に示すように、第十実施形態に係る中空構造物１５１は、２つの連結部材１５２，１５２と、３つの板状部材１５３とで構成されている。 [Tenth embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the tenth embodiment will be described. As shown in FIG. 26, the hollow structure 151 according to the tenth embodiment includes two connecting members 152 and 152 and three plate-like members 153.
　連結部材１５２は、板状の基部１５２ａと、基部１５２ａの一端から延設された板状の延設部１５２ｂと、他端から延設された板状の延設部１５２ｃと、基部１５２ａと延設部１５２ｃの間から斜めに延設された板状の延設部１５２ｄとで構成されている。連結部材１５２は、押出成形によって成形された押出形材である。 The connecting member 152 includes a plate-like base portion 152a, a plate-like extension portion 152b extending from one end of the base portion 152a, a plate-like extension portion 152c extending from the other end, and a base portion 152a. It is comprised by the plate-shaped extension part 152d extended diagonally from between the installation parts 152c. The connecting member 152 is an extruded shape member formed by extrusion molding.
　第十実施形態に係る中空構造物の製造方法では、突合せ工程と、摩擦攪拌工程とを行う。突合せ工程では、２つの連結部材１５２と３つの板状部材１５３とを突き合わせる工程である。詳しくは、右側の連結部材１５２の延設部１５２ｂの端面１５２ｅと、板状部材１５３の端面１５３ｂとを突き合わせる。これにより、突合せ部Ｊ１５１が形成される。また、右側の連結部材１５２の延設部１５２ｃの端面１５２ｆと、板状部材１５３の端面１５３ｂとを突き合わせる。これにより、突合せ部Ｊ１５２が形成される。 In the method for manufacturing a hollow structure according to the tenth embodiment, a butt process and a friction stirring process are performed. In the butting step, two connecting members 152 and three plate-like members 153 are butted. Specifically, the end surface 152e of the extending portion 152b of the right connecting member 152 and the end surface 153b of the plate-like member 153 are abutted against each other. Thereby, the butt | matching part J151 is formed. Further, the end surface 152 f of the extending portion 152 c of the right connection member 152 and the end surface 153 b of the plate-like member 153 are abutted against each other. Thereby, the butt | matching part J152 is formed.
　さらに、右側の連結部材１５２の延設部１５２ｄの端面１５２ｇと、板状部材１５３の端面１５３ｂとを突き合わせる。これにより、突合せ部Ｊ１５３が形成される。同様にして、左側の連結部材１５２と、３つの板状部材１５３とを突き合わせて突合せ部Ｊ１５１，Ｊ１５２，Ｊ１５３が形成される。各端面を突き合わせたら、受け部材及び押圧部材を含む固定治具（図示省略）を用いて各部材を挟持して移動不能に拘束する。 Furthermore, the end surface 152g of the extending portion 152d of the right connection member 152 and the end surface 153b of the plate-like member 153 are brought into contact with each other. Thereby, the butt | matching part J153 is formed. Similarly, the left connecting member 152 and the three plate-like members 153 are abutted to form the abutting portions J151, J152, and J153. When each end face is abutted, each member is clamped using a fixing jig (not shown) including a receiving member and a pressing member and restrained so as not to move.
　第十実施形態に係る摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ１５１，Ｊ１５２，Ｊ１５３を摩擦攪拌接合する。 In the friction stir process according to the tenth embodiment, the abutting portions J151, J152, and J153 are friction stir welded using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment.
　以上説明した、第十実施形態に係る中空構造物の製造方法によっても、第一実施形態と略同等の効果を奏することができる。第十実施形態に係る中空構造物の製造方法によれば、断面三角形を呈する中空部Ｍ３，Ｍ３を備えた中空構造物１５１を容易に形成することができる。 The above-described method for manufacturing the hollow structure according to the tenth embodiment can provide substantially the same effect as that of the first embodiment. According to the method for manufacturing a hollow structure according to the tenth embodiment, the hollow structure 151 including the hollow portions M3 and M3 having a triangular cross section can be easily formed.
　第五実施形態～第十実施形態に係る中空構造物の製造方法によれば、断面Ｋ字状、断面Ｌ字状、断面Ｔ字状等の連結部材を用いて断面三角形の中空部を備えた中空構造物を容易に形成することができる。また、必要に応じて板状部材を連結することで中空構造物の大きさを適宜変更することができる。また、連結部材１３２，１３３，１５２のように、中空構造物の二つの角部を構成しつつ、斜めに延設された延設部も備えた部材を用いて中空構造物を形成してもよい。 According to the method for manufacturing a hollow structure according to the fifth to tenth embodiments, a hollow portion having a triangular section is provided using a connecting member having a K-shaped section, an L-shaped section, a T-shaped section, or the like. A hollow structure can be easily formed. Moreover, the magnitude | size of a hollow structure can be suitably changed by connecting a plate-shaped member as needed. Moreover, even if it forms a hollow structure using the member provided with the extended part extended diagonally, comprising two corner | angular parts of a hollow structure like the connection members 132,133,152. Good.
［第十一実施形態］
　第十一実施形態に係る接合方法では、図２７に示すように、連結部材６１と、６つの板状部材７１とを接合する。連結部材６１は、板状の基部６１ａと、基部６１ａの一方の側面から斜めに延設された板状の一対の延設部６１ｂ，６１ｃと、他方の側面から斜めに延設された板状の一対の延設部６１ｄ，６１ｅとで構成されている。連結部材６１は、正面視放射状に形成されている。連結部材６１は、押出成形によって成形された押出形材である。 [Eleventh embodiment]
In the joining method according to the eleventh embodiment, the connecting member 61 and the six plate-like members 71 are joined as shown in FIG. The connecting member 61 includes a plate-like base portion 61a, a pair of plate-like extending portions 61b and 61c extending obliquely from one side surface of the base portion 61a, and a plate-like shape extending obliquely from the other side surface. And a pair of extending portions 61d and 61e. The connecting member 61 is formed radially in front view. The connecting member 61 is an extruded shape member formed by extrusion molding.
　第十一実施形態に係る接合方法では、第一工程と、第二工程とを行う。第一工程は、基部６１ａと、板状部材７１，７１とを接合する工程である。第十一実施形態に係る第一工程では、突合せ工程と、摩擦攪拌工程とを行う。第一工程の突合せ工程では、基部６１ａの端面６１ｆと、板状部材７１の端面７１ａとを突き合わせる。また、基部６１ａの端面６１ｉと、板状部材７１の端面７１ａとを突き合わせる。これにより、それぞれ突合せ部Ｊ７１，Ｊ７２が形成される。 In the joining method according to the eleventh embodiment, the first step and the second step are performed. A 1st process is a process of joining the base 61a and the plate-shaped members 71 and 71. FIG. In the first process according to the eleventh embodiment, a butt process and a friction stirring process are performed. In the butting step of the first step, the end surface 61f of the base portion 61a and the end surface 71a of the plate-like member 71 are butted. Further, the end surface 61 i of the base portion 61 a and the end surface 71 a of the plate-like member 71 are abutted against each other. Thereby, the butt | matching parts J71 and J72 are formed, respectively.
　第一工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ７１，Ｊ７２を摩擦攪拌接合する。 In the first friction stir step, the butt portions J71 and J72 are friction stir welded using the bobbin tool 31 in the same manner as the first step of the friction stir step according to the first embodiment.
　第十一実施形態に係る第二工程は、延設部６１ｂ，６１ｃ，６１ｄ，６１ｅと各板状部材７１とを接合する工程である。第十一実施形態に係る第二工程では、突合せ工程と、摩擦攪拌工程とを行う。第二工程の突合せ工程では、延設部６１ｂの端面６１ｇと板状部材７１の端面７１ａとを突き合わせる。これにより、突合せ部Ｊ７３が形成される。同様の手順により、それぞれ突合せ部Ｊ７４，Ｊ７５，Ｊ７６を形成する。 The second step according to the eleventh embodiment is a step of joining the extending portions 61b, 61c, 61d, 61e and the respective plate members 71. In the second step according to the eleventh embodiment, a butting step and a friction stirring step are performed. In the butting step of the second step, the end surface 61g of the extending portion 61b and the end surface 71a of the plate-like member 71 are butted. Thereby, the butt | matching part J73 is formed. The butt portions J74, J75, and J76 are formed by the same procedure.
　第十一実施形態に係る第二工程の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ７３～Ｊ７６を摩擦攪拌接合する。 In the friction stirring step of the second step according to the eleventh embodiment, the friction stirring step of the first step according to the first embodiment is performed in the same manner, and the butted portions J73 to J76 are friction stir welded using the bobbin tool 31. To do.
　以上説明した第十一実施形態に係る接合方法によれば、３つ以上の板状部材を連結可能な連結部材６１と、複数の板状部材とを容易に接合することができる。 According to the joining method according to the eleventh embodiment described above, the connecting member 61 capable of connecting three or more plate-like members and the plurality of plate-like members can be easily joined.
［第十一実施形態の変形例］
　次に、第十一実施形態の変形例に係る接合方法について説明する。図２８に示すように、第十一実施形態に係る変形例では、連結部材１５Ａと板状部材２４，２６，２７Ａとを接合する。第十一実施形態に係る変形例の接合方法では、突合せ工程と、摩擦攪拌工程とを行う。 [Modification of Eleventh Embodiment]
Next, a joining method according to a modified example of the eleventh embodiment will be described. As shown in FIG. 28, in the modification according to the eleventh embodiment, the connecting member 15A and the plate- like members 24, 26, 27A are joined. In the joining method of the modified example according to the eleventh embodiment, a butt process and a friction stirring process are performed.
　連結部材１５Ａは、板状を呈する基部１５ａと、基部１５ａから垂直に延設された延設部１５ｂとで構成されている。基部１５ａの端面１５ｄの板厚寸法は、端面１５ｅの板厚寸法よりも小さくなっている。つまり、基部１５ａのうち端面１５ｄ側は先端に向けて徐々に薄くなっている。板状部材２７Ａの端面２７Ａａは、端面１５ｄと同じ板厚寸法になっている。基部１５ａの端面１５ｄと板状部材２７Ａの端面２７Ａａとが突き合わされることにより突合せ部Ｊ３Ａが形成される。 The connecting member 15A includes a plate-like base portion 15a and an extending portion 15b extending vertically from the base portion 15a. The plate thickness dimension of the end surface 15d of the base portion 15a is smaller than the plate thickness dimension of the end surface 15e. That is, the end surface 15d side of the base portion 15a is gradually thinner toward the tip. The end surface 27Aa of the plate-like member 27A has the same thickness as the end surface 15d. The abutting portion J3A is formed by abutting the end surface 15d of the base portion 15a with the end surface 27Aa of the plate-like member 27A.
　第十一実施形態の変形例に係る接合方法の摩擦攪拌工程では、第一実施形態に係る第一工程の摩擦攪拌工程を同じ要領で、ボビンツール３１を用いて各突合せ部Ｊ２，Ｊ４，Ｊ３Ａを摩擦攪拌接合する。突合せ部Ｊ３Ａを摩擦攪拌接合する場合は、ボビンツール３１のショルダ間距離を小さくして、突合せ部Ｊ３Ａに平端部３２ｃ，３３ｃが入り込むようにして摩擦攪拌接合を行うことが好ましい。 In the friction stir process of the joining method according to the modification of the eleventh embodiment, each of the butted portions J2, J4, J3A using the bobbin tool 31 in the same manner as the friction stir process of the first process according to the first embodiment. Friction stir welding. When friction stir welding is performed on the butted portion J3A, it is preferable to reduce the distance between the shoulders of the bobbin tool 31 and perform the friction stir welding so that the flat end portions 32c and 33c enter the butted portion J3A.
　以上説明した第十一実施形態の変形例に係る接合方法のように、連結部材１５Ａのうち、端部（端面）の板厚が他の部位の端部の板厚よりも小さく（薄く）なっていてもよい。言い換えると、基部１５ａの両端部及び延設部１５ｂの端部のいずれか一つの板厚が、基部１５ａの両端部及び延設部１５ｂの端部の他の板厚と異なるように形成してもよい。これにより、設計の自由度を向上させるこができる。例えば、図１に示す中空構造物１における連結部材１５及び板状部材２７を、連結部材１５Ａ及び板状部材２７Ａに置き換えてもよい。これにより、中空構造物を構成する板状部材のうち、一部の板厚を薄くすることができる。また、第十一実施形態及び第十一実施形態の変形例では、断面放射状又はＴ字状の連結部材を例示したが、接合方法に係る連結部材は、断面Ｉ字状、断面Ｋ字状又は断面十字状（クロス状）等少なくとも３つの板状部材を連結可能であればよい。 Like the joining method according to the modified example of the eleventh embodiment described above, the plate thickness of the end portion (end surface) of the connecting member 15A is smaller (thinner) than the plate thickness of the end portion of the other part. It may be. In other words, the thickness of any one of the both end portions of the base portion 15a and the end portion of the extending portion 15b is different from the other plate thicknesses of both end portions of the base portion 15a and the end portion of the extending portion 15b. Also good. Thereby, the freedom degree of design can be improved. For example, the connecting member 15 and the plate-like member 27 in the hollow structure 1 shown in FIG. 1 may be replaced with the connecting member 15A and the plate-like member 27A. Thereby, some board thickness can be made thin among the plate-shaped members which comprise a hollow structure. In addition, in the eleventh embodiment and the modification of the eleventh embodiment, the connecting member having a radial cross section or a T-shape is illustrated, but the connecting member according to the joining method may be an I-shaped cross section, a K-shaped cross section, or It is sufficient that at least three plate-like members such as a cross-shaped cross (cross-shaped) can be connected.
［第十二実施形態］
　本発明の第十二実施形態に係る中空構造物及び中空構造物の製造方法について図面を参照して詳細に説明する。図２９に示すように本実施形態に係る中空構造物２０１は、断面矩形の一つの中空部Ｍを備えた金属製の構造物である。なお、下記の説明における「上下」、「左右」、「前後」は、図２９の矢印に従う。「上下」、「左右」、「前後」は、本発明の方向を限定するものではない。 [Twelfth embodiment]
A hollow structure and a method for manufacturing the hollow structure according to the twelfth embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 29, the hollow structure 201 according to this embodiment is a metal structure including one hollow portion M having a rectangular cross section. In the following description, “up and down”, “left and right”, and “front and back” follow the arrows in FIG. “Up / down”, “left / right”, and “front / back” do not limit the direction of the present invention.
　中空構造物２０１は、４つの連結部材（金属部材）２１１～２１４と、４つの板状部材（金属部材）２２１～２２４を断面矩形の中空部Ｍが形成されるように突き合わせ、摩擦攪拌接合で一体形成されている。つまり、中空構造物２０１は、複数の金属部材を組み合わせて形成されている。連結部材２１１～２１４の板状の各部位及び板状部材２２１～２２４の板厚寸法は略同一である。 The hollow structure 201 abuts the four connecting members (metal members) 211 to 214 and the four plate-like members (metal members) 221 to 224 so that a hollow portion M having a rectangular cross section is formed. It is integrally formed. That is, the hollow structure 201 is formed by combining a plurality of metal members. The plate-like portions of the connecting members 211 to 214 and the plate thicknesses of the plate-like members 221 to 224 are substantially the same.
　連結部材２１１は、断面Ｌ字状を呈する押出形材である。連結部材２１１は、摩擦攪拌可能な金属で形成されており、本実施形態ではアルミニウム合金製である。連結部材２１１は、板状の基部２１１ａと、基部２１１ａの端部から垂直に延設された板状の延設部２１１ｂとで構成されている。連結部材２１２～２１４は、連結部材２１１と同じ形状になっている。連結部材２１２～２１４も、連結部材２１１と同様に、基部（２１２ａ～２１４ａ）と、延設部（２１２ｂ～２１４ｂ）とでそれぞれ構成されている。連結部材２１１～２１４は、２つの板状部材を連結可能な形状になっている。 The connecting member 211 is an extruded shape having an L-shaped cross section. The connecting member 211 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment. The connecting member 211 includes a plate-like base portion 211a and a plate-like extension portion 211b that extends vertically from the end of the base portion 211a. The connecting members 212 to 214 have the same shape as the connecting member 211. Similarly to the connecting member 211, the connecting members 212 to 214 each include a base portion (212a to 214a) and an extending portion (212b to 214b). The connecting members 211 to 214 have a shape capable of connecting two plate-like members.
　板状部材２２１～２２４は、摩擦攪拌可能な金属で形成されており板状を呈する。板状部材２２１～２２４は、本実施形態では、連結部材２１１と同じ材料で形成されている。板状部材２２１は、連結部材２１１，２１２の間に配設されている。板状部材２２２は、連結部材２１１，２１３の間に配設されている。板状部材２２３は、連結部材２１２，２１４の間に配設されている。板状部材２２４は、連結部材２１３，２１４の間に配設されている。 The plate-like members 221 to 224 are formed of a metal capable of friction stir and have a plate shape. The plate-like members 221 to 224 are formed of the same material as that of the connecting member 211 in this embodiment. The plate member 221 is disposed between the connecting members 211 and 212. The plate-like member 222 is disposed between the connecting members 211 and 213. The plate member 223 is disposed between the connecting members 212 and 214. The plate member 224 is disposed between the connecting members 213 and 214.
　次に、本実施形態の中空構造物の製造方法について説明する。図３０に示すように、本実施形態に係る中空構造物の製造方法では、ボビンツール３１（図２も参照）を用いる。 Next, a method for manufacturing the hollow structure according to this embodiment will be described. As shown in FIG. 30, in the method for manufacturing a hollow structure according to the present embodiment, a bobbin tool 31 (see also FIG. 2) is used.
　中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程と、を行う。図３０に示すように、本施形態に係る第一工程は、連結部材２１１，２１３と板状部材２２２とを接合する工程である。言い換えると、Ｕ字状部材２４１を形成する工程である。本実施形態に係る第一工程では、突合せ工程と、摩擦攪拌工程とを行う。 In the method for manufacturing a hollow structure, a first step, a second step, a third step, and a fourth step are performed. As shown in FIG. 30, the first step according to this embodiment is a step of joining the connecting members 211 and 213 and the plate-like member 222. In other words, it is a step of forming the U-shaped member 241. In the first process according to the present embodiment, a butt process and a friction stirring process are performed.
　第一工程で用いる固定治具は、受け部材Ｈと、中間部材ＮＡ，ＮＢと、押圧部材Ｐとで構成されている。受け部材Ｈは、断面Ｌ字状を呈する金属部材であって、架台Ｔに移動不能に固定されている。中間部材ＮＡは、断面Ｌ字状を呈する部材であって、受け部材Ｈと連結部材２１１との間に配設されている。中間部材ＮＡは、基礎部Ｎ１と、基礎部Ｎ１から立ち上がる立上り部Ｎ２とで構成されている。中間部材Ｎの立上り部Ｎ２の端面には連結部材２１１を固定するクランプＫが設けられている。 The fixing jig used in the first process includes a receiving member H, intermediate members NA and NB, and a pressing member P. The receiving member H is a metal member having an L-shaped cross section, and is fixed to the gantry T so as not to move. The intermediate member NA is a member having an L-shaped cross section, and is disposed between the receiving member H and the connecting member 211. The intermediate member NA includes a base portion N1 and a rising portion N2 that rises from the base portion N1. On the end surface of the rising portion N2 of the intermediate member N, a clamp K for fixing the connecting member 211 is provided.
　中間部材ＮＢは、断面Ｌ字状を呈する部材であって、押圧部材Ｐと連結部材２１３との間に配設されている。中間部材ＮＢは、基礎部Ｎ１と、基礎部Ｎ１から立ち上がる立上り部Ｎ２とで構成されている。中間部材Ｎの立上り部Ｎ２の端面には連結部材２１３を固定するクランプＫが設けられている。基礎部Ｎ１の板厚は、ボビンツール３１が相対移動可能なように、下部ショルダ３２の高さ寸法よりも大きくなっている。 The intermediate member NB is a member having an L-shaped cross section, and is disposed between the pressing member P and the connecting member 213. The intermediate member NB includes a base portion N1 and a rising portion N2 that rises from the base portion N1. On the end surface of the rising portion N2 of the intermediate member N, a clamp K for fixing the connecting member 213 is provided. The thickness of the base portion N1 is larger than the height dimension of the lower shoulder 32 so that the bobbin tool 31 can be relatively moved.
　押圧部材Ｐは、受け部材Ｈと対向する位置において架台Ｔに固定されている。押圧部材Ｐは、例えば、万力であって、受け部材Ｈ方向に押圧力を付与する部材である。押圧部材Ｐは、中間部材ＮＢの長手方向に複数個設置されている。中間部材ＮＡ，ＮＢを設けることにより、連結部材２１１，２１３の損傷を防ぐことができる。なお、中間部材ＮＡ，ＮＢは省略してもよい。 The pressing member P is fixed to the gantry T at a position facing the receiving member H. The pressing member P is, for example, a vise and a member that applies a pressing force in the direction of the receiving member H. A plurality of pressing members P are provided in the longitudinal direction of the intermediate member NB. By providing the intermediate members NA and NB, damage to the connecting members 211 and 213 can be prevented. The intermediate members NA and NB may be omitted.
　第一工程の突合せ工程では、連結部材２１１と板状部材２２２とを突き合わせるとともに、連結部材２１３と板状部材２２２とを突き合わせる。より詳しくは、連結部材２１１の延設部２１１ｂの端面２１１ｄと板状部材２２２の端面２２２ａとを突き合わせて突合せ部Ｊ２１１を形成するとともに、連結部材２１３の延設部２１３ｂの端面２１３ｄと板状部材２２２の端面２２２ｂとを突き合わせて突合せ部Ｊ２１２を形成する。また、連結部材２１１と中間部材ＮＡとを当接させるとともに、連結部材２１３と中間部材ＮＢとを当接させる。そして、押圧部材Ｐで押圧力を付与して連結部材２１１，２１３と板状部材２２２とを移動不能に拘束する。 In the first butting step, the connecting member 211 and the plate member 222 are butted together, and the connecting member 213 and the plate member 222 are butted. More specifically, the end surface 211d of the extending portion 211b of the connecting member 211 and the end surface 222a of the plate-like member 222 are abutted to form a butt portion J211 and the end surface 213d of the extending portion 213b of the connecting member 213 and the plate-like member The end face 222b of 222 is abutted to form the abutting portion J212. Further, the connecting member 211 and the intermediate member NA are brought into contact with each other, and the connecting member 213 and the intermediate member NB are brought into contact with each other. Then, a pressing force is applied by the pressing member P to restrain the connecting members 211 and 213 and the plate-like member 222 from moving.
　第一工程の摩擦攪拌工程では、ボビンツール３１を用いて突合せ部Ｊ２１１を前後方向になぞるように摩擦攪拌接合する。ピン３４の長さ（ショルダ間距離）は、延設部２１１ｂの板厚及び板状部材２２２の板厚よりも若干短くなっている。摩擦攪拌工程では、平端部３２ｃ，３３ｃ（図２参照）を突合せ部Ｊ２１１にわずかに入り込ませながら摩擦攪拌接合を行う。ボビンツール３１の移動軌跡には塑性化領域Ｗが形成される。また、第一工程の摩擦攪拌工程では、突合せ部Ｊ２１２に対しても突合せ部Ｊ２１１と同じ要領で摩擦攪拌接合を行う。 In the first friction stir step, the bobbin tool 31 is used to perform friction stir welding so that the butt J211 is traced in the front-rear direction. The length of the pin 34 (distance between shoulders) is slightly shorter than the plate thickness of the extending portion 211 b and the plate thickness of the plate-like member 222. In the friction stir process, the friction stir welding is performed while the flat end portions 32c and 33c (see FIG. 2) slightly enter the butting portion J211. A plasticized region W is formed in the movement locus of the bobbin tool 31. Further, in the friction stirring step of the first step, friction stir welding is performed on the butting portion J212 in the same manner as the butting portion J211.
　本実施形態に係る第二工程は、図２９に示すように、連結部材２１２，２１４と板状部材２２３とを接合する工程である。言い換えると、Ｕ字状部材２４２を形成する工程である。本実施形態に係る第二工程では、突合せ工程と、摩擦攪拌工程を行う。本実施形態に係る第二工程は、第一工程と同じ要領でＵ字状部材２４２を形成する。 The second step according to the present embodiment is a step of joining the connecting members 212 and 214 and the plate-like member 223 as shown in FIG. In other words, it is a process of forming the U-shaped member 242. In the second process according to the present embodiment, a butt process and a friction stirring process are performed. In the second step according to this embodiment, the U-shaped member 242 is formed in the same manner as the first step.
　本実施形態に係る第三工程及び第四工程は並行して行う。本実施形態に係る第三工程は、図３１に示すように、連結部材２１３，２１４と板状部材２２４を接合する工程である。言い換えると、Ｕ字状部材２４１，２４２と板状部材２２４とを接合する工程である。本実施形態に係る第四工程は、連結部材２１１，２１２と板状部材２２１とを接合する工程である。言い換えると、Ｕ字状部材２４１，２４２と板状部材２２１とを接合する工程である。 The third step and the fourth step according to this embodiment are performed in parallel. The third step according to this embodiment is a step of joining the connecting members 213 and 214 and the plate-like member 224 as shown in FIG. In other words, it is a step of joining the U-shaped members 241 and 242 and the plate-like member 224 together. The fourth step according to the present embodiment is a step of joining the connecting members 211 and 212 and the plate member 221. In other words, it is a process of joining the U-shaped members 241 and 242 and the plate-shaped member 221 together.
　本実施形態に係る第三工程及び第四工程で用いる治具は、受け部材Ｈと、押圧部材Ｐと、中間部材ＱＡ，ＱＢとを用いる。中間部材ＱＡ，ＱＢの端面にはクランプＫ，Ｋがそれぞれ形成されている。中間部材ＱＡは、押圧部材ＰとＵ字状部材２４１との間に配設される板状部材である。中間部材ＱＢは、受け部材ＨとＵ字状部材２４２との間に配設される部材である。中間部材ＱＡ，ＱＢを用いることにより、Ｕ字状部材２４１，２４２の損傷を防ぐことができる。 The jig used in the third step and the fourth step according to this embodiment uses a receiving member H, a pressing member P, and intermediate members QA and QB. Clamps K and K are formed on end surfaces of the intermediate members QA and QB, respectively. The intermediate member QA is a plate-like member disposed between the pressing member P and the U-shaped member 241. The intermediate member QB is a member disposed between the receiving member H and the U-shaped member 242. By using the intermediate members QA and QB, damage to the U-shaped members 241 and 242 can be prevented.
　本実施形態に係る第三工程及び第四工程では、突合せ工程と、摩擦攪拌工程とをそれぞれ行う。第三工程の突合せ工程では、連結部材２１３の基部２１３ａの端面２１３ｃと板状部材２２４の端面２２４ｂとを突き合わせる。これにより、突合せ部Ｊ２１７が形成される。また、第三工程の突合せ工程では、連結部材２１４の基部２１４ａの端面２１４ｃと板状部材２２４の端面２２４ａとを突き合わせる。これにより、突合せ部Ｊ２１８が形成される。また、第三工程に係る突合せ工程では、クランプＫ，Ｋで連結部材２１３，２１４をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与してＵ字状部材２４１，２４２と板状部材２２４とを移動不能に拘束する。 In the third step and the fourth step according to the present embodiment, a butting step and a friction stirring step are performed. In the butting step of the third step, the end surface 213c of the base portion 213a of the connecting member 213 and the end surface 224b of the plate-like member 224 are butted. Thereby, the butt | matching part J217 is formed. Moreover, in the butting process of the third process, the end face 214c of the base 214a of the connecting member 214 and the end face 224a of the plate-like member 224 are butted. Thereby, the butt | matching part J218 is formed. In the butting process according to the third process, the connecting members 213 and 214 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P so that the U-shaped members 241 and 242 and the plate-like member 224 To be immovable.
　また、本実施形態に係る第三工程の突合せ工程では、本実施形態に係る第四工程の突合せ工程も並行して行う。第四工程の突合せ工程では、図３１に示すように、連結部材２１１の基部２１１ａの端面２１１ｃと板状部材２２１の端面２２１ｂとを突き合わせる。これにより、突合せ部Ｊ２１５が形成される。また、第四工程の突合せ工程では、連結部材２１２の基部２１２ａの端面２１２ｃと板状部材２２１の端面２２１ａとを突き合わせる。これにより突合せ部Ｊ２１６が形成される。 Further, in the third matching process according to the present embodiment, the fourth matching process according to the present embodiment is also performed in parallel. In the fourth butting step, the end surface 211c of the base portion 211a of the connecting member 211 and the end surface 221b of the plate-like member 221 are butted as shown in FIG. Thereby, the butt | matching part J215 is formed. In the fourth butting step, the end surface 212c of the base portion 212a of the connecting member 212 and the end surface 221a of the plate-like member 221 are butted. As a result, a butt J216 is formed.
　第三工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２１７，Ｊ２１８をそれぞれ摩擦攪拌接合する。第三工程の摩擦攪拌工程が終了したら、押圧部材Ｐの押圧を一旦解除して、被接合金属部材をひっくり返し再度、固定治具で被接合金属部材を移動不能に拘束する。そして、第四工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２１５，Ｊ２１６をそれぞれ摩擦攪拌接合する。以上の工程により、図２９の中空構造物２０１が形成される。 In the friction stirring step of the third step, the butt joints J217 and J218 are respectively friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step. When the friction stirring step of the third step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig. Then, in the fourth step of friction stirring, the butt joints J215 and J216 are each friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring. The hollow structure 201 of FIG. 29 is formed by the above process.
　以上説明した本実施形態に係る中空構造物の製造方法によれば、ボビンツール３１を用いることで、各突合せ部Ｊ２１１～Ｊ２１８の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物２０１を容易に製造することができる。また、連結部材２１１～２１４は、押出形材であるため、押し出し方向に長い中空構造物２０１を容易に製造することができる。 According to the method for manufacturing a hollow structure according to the present embodiment described above, the entire length in the height direction of each butt portion J211 to J218 can be friction stir welded at a time by using the bobbin tool 31, so that the hollow structure 201 can be easily manufactured. Further, since the connecting members 211 to 214 are extrusion shaped members, the hollow structure 201 that is long in the extrusion direction can be easily manufactured.
　また、摩擦攪拌工程では、押圧部材Ｐと受け部材Ｈとで、連結部材２１１～２１４及び板状部材２２１～２２４をそれぞれ挟持した状態で摩擦攪拌接合を行うことが好ましい。これにより、摩擦攪拌工程において、各突合せ部の目開きを防ぐことができる。 In the friction stirring step, it is preferable that the friction stir welding is performed in a state where the connecting members 211 to 214 and the plate-like members 221 to 224 are sandwiched between the pressing member P and the receiving member H, respectively. Thereby, the opening of each butt portion can be prevented in the friction stirring step.
　以上本発明の第十二実施形態について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。例えば、図３０に示すように、摩擦攪拌工程を行う際に、裏当て材Ｓを用いてもよい。裏当て材Ｓを用いることで、摩擦攪拌工程を安定して行うことができる。また、前記した中空構造物の製造方法は一例であって、本発明を限定するものではない。 Although the twelfth embodiment of the present invention has been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, as shown in FIG. 30, a backing material S may be used when performing the friction stirring step. By using the backing material S, the friction stirring process can be performed stably. Moreover, the manufacturing method of an above described hollow structure is an example, Comprising: This invention is not limited.
［第十三実施形態］
　次に、本発明の第十三実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図３２に示すように、本実施形態に係る中空構造物２０１Ａは、Ｕ字状を呈する連結部材２５１，２５２が一体形成されている点で第十二実施形態と相違する。中空構造物２０１Ａは、２つの連結部材２５１，２５２と、２つの板状部材２５３，２５４とを断面矩形の中空部Ｍが形成されるように突き合わせ、摩擦攪拌接合で一体形成されている。連結部材２５１，２５２の板状の各部位及び板状部材２５３，２５４の板厚寸法はほぼ同一である。 [Thirteenth embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the thirteenth embodiment of the present invention will be described. As shown in FIG. 32, a hollow structure 201A according to this embodiment is different from the twelfth embodiment in that connection members 251 and 252 having a U-shape are integrally formed. The hollow structure 201A is formed by abutting two connecting members 251 and 252 and two plate- like members 253 and 254 so that a hollow portion M having a rectangular cross section is formed, and is integrally formed by friction stir welding. The plate-like portions of the connecting members 251 and 252 and the plate- like members 253 and 254 have substantially the same thickness.
　連結部材２５１は、断面Ｕ字状を呈する押出形材である。連結部材２５１は、摩擦攪拌可能な金属で形成されており、本実施形態ではアルミニウム合金製である。連結部材２５１は、板状の基部２５１ａと、基部２５１ａの両端部からそれぞれ垂直に延設された板状の延設部２５１ｂ，２５１ｃとで構成されている。連結部材２５２は、連結部材２５１と同じ形状になっている。連結部材２５２も、連結部材２５１と同様に、基部２５２ａと、延設部２５２ｂ，２５２ｃとでそれぞれ構成されている。連結部材２５１，２５２は、２つの板状部材を連結可能な形状になっている。 The connecting member 251 is an extruded shape having a U-shaped cross section. The connecting member 251 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment. The connecting member 251 includes a plate-like base portion 251a and plate-like extending portions 251b and 251c extending vertically from both ends of the base portion 251a. The connecting member 252 has the same shape as the connecting member 251. Similarly to the connecting member 251, the connecting member 252 includes a base 252a and extending portions 252b and 252c. The connecting members 251 and 252 have a shape capable of connecting two plate-like members.
　次に、本発明の第十三実施形態に係る中空構造物の製造方法について説明する。本実施形態に係る中空構造物の製造方法では、第一工程と、第二工程とを行う。第一工程及び第二工程は並行して行う。 Next, a method for manufacturing a hollow structure according to the thirteenth embodiment of the present invention will be described. In the method for manufacturing a hollow structure according to the present embodiment, the first step and the second step are performed. The first step and the second step are performed in parallel.
　本実施形態に係る第一工程は、図３３に示すように、連結部材２５１，２５２と板状部材２５４を接合する工程である。本実施形態に係る第二工程は、連結部材２５１，２５２と板状部材２５３とを接合する工程である。 The first step according to the present embodiment is a step of joining the connecting members 251 and 252 and the plate member 254 as shown in FIG. The second step according to the present embodiment is a step of joining the connecting members 251 and 252 and the plate member 253.
　本実施形態に係る第一工程及び第二工程で用いる治具は、受け部材Ｈと、押圧部材Ｐと、中間部材ＱＡ，ＱＢとを用いる。中間部材ＱＡ，ＱＢの端面にはクランプＫ，Ｋがそれぞれ形成されている。中間部材ＱＡは、押圧部材Ｐと連結部材２５１との間に配設される板状部材である。中間部材ＱＢは、受け部材Ｈと連結部材２５２との間に配設される部材である。中間部材ＱＡ，ＱＢを用いることにより、連結部材２５１，２５２の損傷を防ぐことができる。 The jig used in the first step and the second step according to this embodiment uses a receiving member H, a pressing member P, and intermediate members QA and QB. Clamps K and K are formed on end surfaces of the intermediate members QA and QB, respectively. The intermediate member QA is a plate-like member disposed between the pressing member P and the connecting member 251. The intermediate member QB is a member disposed between the receiving member H and the connecting member 252. By using the intermediate members QA and QB, damage to the connecting members 251 and 252 can be prevented.
　本実施形態に係る第一工程及び第二工程では、突合せ工程と、摩擦攪拌工程とをそれぞれ行う。第一工程の突合せ工程では、連結部材２５１の延設部２５１ｃの端面２５１ｅと板状部材２５４の端面２５４ｂとを突き合わせる。これにより、突合せ部Ｊ２２３が形成される。また、第一工程の突合せ工程では、連結部材２５２の延設部２５２ｃの端面２５２ｅと板状部材２５４の端面２５４ａとを突き合わせる。これにより、突合せ部Ｊ２２４が形成される。また、第一工程に係る突合せ工程では、クランプＫ，Ｋで連結部材２５１，２５２をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与して連結部材２５１，２５２と板状部材２５４とを移動不能に拘束する。 In the first step and the second step according to the present embodiment, a butting step and a friction stirring step are performed. In the butting step of the first step, the end surface 251e of the extending portion 251c of the connecting member 251 and the end surface 254b of the plate-like member 254 are butted. Thereby, the butt | matching part J223 is formed. Moreover, in the butting process of the first process, the end face 252e of the extending portion 252c of the connecting member 252 and the end face 254a of the plate-like member 254 are butted. Thereby, the butt | matching part J224 is formed. In the butting process according to the first process, the connecting members 251 and 252 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to move the connecting members 251 and 252 and the plate-like member 254. Restrained impossible.
　また、本実施形態に係る第一工程の突合せ工程では、本実施形態に係る第二工程の突合せ工程も並行して行う。第二工程の突合せ工程では、図３３に示すように、連結部材２５１の延設部２５１ｂの端面２５１ｄと板状部材２５３の端面２５３ｂとを突き合わせる。これにより、突合せ部Ｊ２２１が形成される。また、第二工程の突合せ工程では、連結部材２５２の延設部２５２ｂの端面２５２ｄと板状部材２５３の端面２５３ａとを突き合わせる。これにより突合せ部Ｊ２２２が形成される。 Further, in the first matching process according to the present embodiment, the second matching process according to the present embodiment is also performed in parallel. In the butting step of the second step, as shown in FIG. 33, the end surface 251d of the extending portion 251b of the connecting member 251 and the end surface 253b of the plate-like member 253 are butted. Thereby, the butt | matching part J221 is formed. Moreover, in the butting process of the second process, the end face 252d of the extending portion 252b of the connecting member 252 and the end face 253a of the plate-like member 253 are butted. As a result, a butt J222 is formed.
　本実施形態に係る第一工程の摩擦攪拌工程では第十二実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１（図２参照）を用いて突合せ部Ｊ２２３，Ｊ２２４をそれぞれ摩擦攪拌接合する。第一工程の摩擦攪拌工程が終了したら、押圧部材Ｐの押圧を一旦解除して、被接合金属部材をひっくり返し再度、固定治具で被接合金属部材を移動不能に拘束する。そして、第二工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２２１，Ｊ２２２をそれぞれ摩擦攪拌接合する。以上の工程により、図３２の中空構造物２０１Ａが形成される。 In the friction stirring step of the first step according to the present embodiment, the butt portions J223 and J224 are respectively formed using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment. Friction stir welding. When the friction stirring step of the first step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig. In the second step of friction stirring, the abutting portions J221 and J222 are friction stir welded using the bobbin tool 31 in the same manner as in the first step of friction stirring. The hollow structure 201A of FIG. 32 is formed by the above process.
　以上説明した本実施形態に係る中空構造物の製造方法によれば、ボビンツール３１を用いることで、各突合せ部Ｊ２２１～Ｊ２２４の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物２０１Ａを容易に製造することができる。また、連結部材２５１，２５２は、押出形材であるため、押し出し方向に長い中空構造物２０１Ａを容易に製造することができる。また、連結部材２５１，２５２を用いることにより、少ない部品点数で中空構造物２０１Ａを形成することができる。 According to the hollow structure manufacturing method according to the present embodiment described above, the bobbin tool 31 can be used to frictionally stir weld the entire length in the height direction of each butt portion J221 to J224 at a time. 201A can be manufactured easily. Further, since the connecting members 251 and 252 are extruded profiles, it is possible to easily manufacture the hollow structure 201A that is long in the extrusion direction. Moreover, by using the connecting members 251 and 252, the hollow structure 201 </ b> A can be formed with a small number of parts.
　以上本発明の第十二実施形態及び第十三実施形態に係る中空構造物及び中空構造物の製造方法について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。例えば、断面Ｕ字状を呈する一対の連結部材のみで一つの断面矩形の中空部を備えた中空構造物を形成してもよい。また、一つの断面Ｕ字状を呈する連結部材と、一対の断面Ｌ字状を呈する連結部材とで一つの断面矩形の中空部を備えた中空構造物を形成してもよい。 Although the hollow structure and the method for manufacturing the hollow structure according to the twelfth embodiment and the thirteenth embodiment of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, you may form the hollow structure provided with the hollow part of one cross-sectional rectangle only with a pair of connection member which exhibits a U-shaped cross section. Moreover, you may form the hollow structure provided with the hollow part of one cross-sectional rectangle with the connection member which exhibits one cross-section U-shape, and a connection member which exhibits a pair of cross-section L-shape.
　つまり、断面略Ｕ字状を呈する連結部材（金属部材）、断面略Ｌ字状を呈する連結部材（金属部材）の少なくともいずれかを用いてこれらを組み合わせ、一つの断面矩形の中空部を備えた他の形態の中空構造物を形成してもよい。また、断面略Ｕ字状を呈する連結部材（金属部材）、断面略Ｌ字状を呈する連結部材（金属部材）の少なくともいずれか、及び、板状部材（金属部材）を用いてこれらを組み合わせ、一つの断面矩形の中空部を備えた他の形態の中空構造物を形成してもよい。 That is, at least one of a connecting member (metal member) exhibiting a substantially U-shaped cross-section and a connecting member (metal member) exhibiting a substantially L-shaped cross section is combined to provide a hollow section having a single rectangular cross section. You may form the hollow structure of another form. In addition, a connecting member (metal member) having a substantially U-shaped cross section, a connecting member (metal member) exhibiting a substantially L-shaped cross section, and a plate-like member (metal member) are combined, You may form the hollow structure of the other form provided with the hollow part of one cross-sectional rectangle.
［第十四実施形態］
　次に、本発明の第十四実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図３４に示すように、第十四実施形態に係る中空構造物２０１Ｂは、２つの断面矩形の中空部Ｍ，Ｍが形成されている点、断面Ｉ字状の連結部材２６１を用いている点で第十二実施形態と相違する。中空構造物２０１Ｂは、２つの連結部材２５１，２５２と、４つの板状部材２５３，２５３，２５４，２５４と、連結部材２６１とを断面矩形の中空部Ｍ，Ｍが形成されるように突き合わせ、摩擦攪拌接合で一体形成されている。連結部材２５１，２５２，２６１の板状の各部位及び板状部材２５３，２５４の板厚寸法はほぼ同一である。 [14th embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the fourteenth embodiment of the present invention will be described. As shown in FIG. 34, the hollow structure 201 </ b> B according to the fourteenth embodiment has two rectangular rectangular hollow portions M and M, and uses a connecting member 261 having an I-shaped cross section. This is different from the twelfth embodiment. The hollow structure 201B has two connecting members 251 and 252, four plate- like members 253, 253, 254, and 254 and the connecting member 261 butted together so that hollow portions M and M having a rectangular cross section are formed, It is integrally formed by friction stir welding. The plate-like portions of the connecting members 251, 252, and 261 and the plate- like members 253 and 254 have substantially the same thickness.
　連結部材２５１，２５２及び板状部材２５３，２５４は第十三実施形態と同一であるため説明を省略する。連結部材（金属部材）２６１は、断面Ｉ字状を呈する押出形材である。連結部材２６１は、摩擦攪拌可能な金属で形成されており、本実施形態ではアルミニウム合金製である。連結部材２６１は、板状の基部２６１ａと、基部２６１ａの両端部から幅方向両側に延設された板状の延設部２６１ｂ，２６１ｃとで構成されている。連結部材２６１は、４つの板状部材を連結可能な形状になっている。連結部材２６１は、隣接する中空部Ｍ，Ｍを隔てるように配設されている。 Since the connecting members 251 and 252 and the plate- like members 253 and 254 are the same as those in the thirteenth embodiment, the description thereof is omitted. The connecting member (metal member) 261 is an extruded shape having an I-shaped cross section. The connecting member 261 is formed of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment. The connecting member 261 includes a plate-like base portion 261a and plate-like extending portions 261b and 261c extending from both ends of the base portion 261a to both sides in the width direction. The connecting member 261 has a shape capable of connecting four plate-like members. The connecting member 261 is disposed so as to separate the adjacent hollow portions M and M.
　本実施形態に係る中空構造物の製造方法では、第一工程と、第二工程と、第三工程と、第四工程とを行う。第一工程及び第二工程は並行して行う。 In the method for manufacturing a hollow structure according to the present embodiment, the first step, the second step, the third step, and the fourth step are performed. The first step and the second step are performed in parallel.
　本実施形態に係る第一工程は、図３４に示すように、連結部材２５１と板状部材２５４と連結部材２６１とを接合する工程である。本実施形態に係る第二工程は、連結部材２５１と板状部材２５３と連結部材２６１とを接合する工程である。 The first step according to this embodiment is a step of joining the connecting member 251, the plate-like member 254, and the connecting member 261 as shown in FIG. The second step according to this embodiment is a step of joining the connecting member 251, the plate-like member 253, and the connecting member 261.
　図３５に示すように、本実施形態に係る第一工程及び第二工程で用いる治具は、受け部材Ｈと、押圧部材Ｐと、中間部材ＱＡと、中間部材ＲＡとを用いる。中間部材ＱＡ，ＲＡの端部にはクランプＫがそれぞれ形成されている。中間部材ＱＡは、押圧部材Ｐと連結部材２５１との間に配設される部材である。中間部材ＲＡは、受け部材Ｈと連結部材２６１との間に配設される部材である。中間部材ＱＡ，ＲＡを用いることにより、連結部材２５１，２６１の損傷を防ぐことができる。 As shown in FIG. 35, the jig used in the first step and the second step according to the present embodiment uses a receiving member H, a pressing member P, an intermediate member QA, and an intermediate member RA. Clamps K are formed at the ends of the intermediate members QA and RA, respectively. The intermediate member QA is a member disposed between the pressing member P and the connecting member 251. The intermediate member RA is a member disposed between the receiving member H and the connecting member 261. By using the intermediate members QA and RA, damage to the connecting members 251 and 261 can be prevented.
　中間部材ＲＡは、板状を呈する本体部Ｒ１と、本体部Ｒ１から上下方向に張り出す張出部Ｒ２，Ｒ２とで構成されている。張出部Ｒ２の板厚は、本体部Ｒ１の板厚よりも薄くなっているため、本体部Ｒ１と張出部Ｒ２との間に段差部が形成されている。張出部Ｒ２の張り出し長さは、板状部材２５３，２５４の板厚及び延設部２６１ｂ，２６１ｃの板厚と同等になっている。 The intermediate member RA is constituted by a main body portion R1 having a plate shape and overhang portions R2 and R2 projecting from the main body portion R1 in the vertical direction. Since the plate | board thickness of overhang | projection part R2 is thinner than the plate | board thickness of main-body part R1, the level | step-difference part is formed between main-body part R1 and overhang | projection part R2. The overhang length of the overhang portion R2 is equal to the plate thickness of the plate- like members 253 and 254 and the plate thickness of the extending portions 261b and 261c.
　本実施形態に係る第一工程及び第二工程では、突合せ工程と、摩擦攪拌工程とをそれぞれ行う。第一工程の突合せ工程では、連結部材２５１の延設部２５１ｃの端面２５１ｅと板状部材２５４の端面２５４ｂとを突き合わせる。これにより、突合せ部Ｊ２３３が形成される。また、第一工程の突合せ工程では、連結部材２６１の延設部２６１ｃの端面２６１ｆと板状部材２５４の端面２５４ａとを突き合わせる。これにより、突合せ部Ｊ２３４が形成される。また、第一工程に係る突合せ工程では、クランプＫ，Ｋで連結部材２５１，２６１をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与して連結部材２５１，２６１と板状部材２５４とを移動不能に拘束する。 In the first step and the second step according to the present embodiment, a butting step and a friction stirring step are performed. In the butting step of the first step, the end surface 251e of the extending portion 251c of the connecting member 251 and the end surface 254b of the plate-like member 254 are butted. Thereby, the butt | matching part J233 is formed. Moreover, in the butting process of the first process, the end face 261f of the extending portion 261c of the connecting member 261 and the end face 254a of the plate-like member 254 are butted. Thereby, the butt | matching part J234 is formed. In the butting process according to the first step, the connecting members 251 and 261 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to move the connecting members 251 and 261 and the plate-like member 254. Restrained impossible.
　また、本実施形態に係る第一工程の突合せ工程では、本実施形態に係る第二工程の突合せ工程も並行して行う。第二工程の突合せ工程では、図３５に示すように、連結部材２５１の延設部２５１ｂの端面２５１ｄと板状部材２５３の端面２５３ｂとを突き合わせる。これにより、突合せ部Ｊ３２１が形成される。また、第二工程の突合せ工程では、連結部材２６１の延設部２６１ｂの端面２６１ｄと板状部材２５３の端面２５３ａとを突き合わせる。これにより突合せ部Ｊ２３２が形成される。 Further, in the first matching process according to the present embodiment, the second matching process according to the present embodiment is also performed in parallel. In the butting step of the second step, as shown in FIG. 35, the end surface 251d of the extending portion 251b of the connecting member 251 and the end surface 253b of the plate-like member 253 are butted. Thereby, the butt | matching part J321 is formed. Moreover, in the butting process of the second process, the end face 261d of the extending portion 261b of the connecting member 261 and the end face 253a of the plate-like member 253 are butted. Thereby, the butt portion J232 is formed.
　本実施形態に係る第一工程の摩擦攪拌工程では、第十二実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１（図２参照）を用いて突合せ部Ｊ２３３，Ｊ２３４をそれぞれ摩擦攪拌接合する。第一工程の摩擦攪拌工程が終了したら、押圧部材Ｐの押圧を一旦解除して、被接合金属部材をひっくり返し再度、固定治具で被接合金属部材を移動不能に拘束する。そして、第二工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２３１，Ｊ２３２をそれぞれ摩擦攪拌接合する。 In the friction stirring step of the first step according to the present embodiment, the butt portions J233 and J234 are formed using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment. Each is friction stir welded. When the friction stirring step of the first step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig. In the second step, the butt joints J231 and J232 are friction stir welded using the bobbin tool 31 in the same manner as the first step.
　本実施形態に係る第三工程は、図３６に示すように、連結部材２５２，２６１と板状部材２５４を接合する工程である。本実施形態に係る第四工程は、連結部材２５２，２６１と板状部材２５３とを接合する工程である。本実施形態に係る第三工程及び第四工程で用いる治具は、受け部材Ｈと、押圧部材Ｐと、中間部材ＱＡ，ＱＢとを用いる。 The third step according to the present embodiment is a step of joining the connecting members 252 and 261 and the plate member 254 as shown in FIG. The fourth step according to the present embodiment is a step of joining the connecting members 252 and 261 and the plate member 253. The jig used in the third step and the fourth step according to the present embodiment uses the receiving member H, the pressing member P, and the intermediate members QA and QB.
　本実施形態に係る第三工程及び第四工程では、突合せ工程と、摩擦攪拌工程とをそれぞれ行う。第三工程の突合せ工程では、連結部材２６１の延設部２６１ｃの端面２６１ｇと板状部材２５４の端面２５４ｂとを突き合わせる。これにより、突合せ部Ｊ２３７が形成される。また、第三工程の突合せ工程では、連結部材２５２の延設部２５２ｃの端面２５２ｄと板状部材２５４の端面２５４ａとを突き合わせる。これにより、突合せ部Ｊ２３８が形成される。また、第三工程に係る突合せ工程では、クランプＫ，Ｋで連結部材２５１，２５２をそれぞれ固定しつつ、押圧部材Ｐで押圧力を付与して連結部材２５１，２５２，２６１及び板状部材２５３，２５４を移動不能に拘束する。 In the third step and the fourth step according to the present embodiment, a butting step and a friction stirring step are performed. In the butting step of the third step, the end surface 261g of the extending portion 261c of the connecting member 261 and the end surface 254b of the plate-like member 254 are butted. Thereby, the butt | matching part J237 is formed. Moreover, in the butting process of the third process, the end face 252d of the extending portion 252c of the connecting member 252 and the end face 254a of the plate-like member 254 are butted. Thereby, the butt | matching part J238 is formed. In the butting process according to the third step, the connecting members 251 and 252 are fixed by the clamps K and K, respectively, and a pressing force is applied by the pressing member P to connect the connecting members 251, 252, 261 and the plate-like members 253. Restrain 254 to be immovable.
　また、本実施形態に係る第三工程の突合せ工程では、本実施形態に係る第四工程の突合せ工程も並行して行う。第四工程の突合せ工程では、図３６に示すように、連結部材２６１の延設部２６１ｂの端面２６１ｅと板状部材２５３の端面２５３ｂとを突き合わせる。これにより、突合せ部Ｊ２３５が形成される。また、第四工程の突合せ工程では、連結部材２５２の延設部２５２ｂの端面２５２ｄと板状部材２５３の端面２５３ａとを突き合わせる。これにより、突合せ部Ｊ２３６が形成される。 Further, in the third matching process according to the present embodiment, the fourth matching process according to the present embodiment is also performed in parallel. In the fourth butting step, as shown in FIG. 36, the end surface 261e of the extending portion 261b of the connecting member 261 and the end surface 253b of the plate-like member 253 are butted. Thereby, the butt | matching part J235 is formed. In the fourth butting step, the end surface 252d of the extending portion 252b of the connecting member 252 and the end surface 253a of the plate-like member 253 are butted. Thereby, the butt | matching part J236 is formed.
　本実施形態に係る第三工程の摩擦攪拌工程では、第十二実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２３７，Ｊ２３８をそれぞれ摩擦攪拌接合する。第三工程の摩擦攪拌工程が終了したら、押圧部材Ｐの押圧を一旦解除して、被接合金属部材をひっくり返し再度、固定治具で被接合金属部材を移動不能に拘束する。そして、第四工程の摩擦攪拌工程では、第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１を用いて突合せ部Ｊ２３５，Ｊ２３６をそれぞれ摩擦攪拌接合する。以上の工程により、図３４の中空構造物２０１Ｂが形成される。 In the friction stirring step of the third step according to the present embodiment, the butt joints J237 and J238 are respectively friction stir welded using the bobbin tool 31 in the same manner as the friction stirring step of the first step according to the twelfth embodiment. . When the friction stirring step of the third step is completed, the pressing of the pressing member P is once released, the metal member to be bonded is turned over again, and the metal member to be bonded is restrained so as not to move with the fixing jig. Then, in the fourth step of friction stirring, the butt joints J235 and J236 are each friction stir welded using the bobbin tool 31 in the same manner as the first step of friction stirring. The hollow structure 201B of FIG. 34 is formed by the above process.
　以上説明した本実施形態に係る中空構造物の製造方法によれば、ボビンツール３１を用いることで、各突合せ部Ｊ２３１～Ｊ２３８の高さ方向の全長を一度に摩擦攪拌接合できるため、中空構造物２０１Ｂを容易に製造することができる。また、連結部材２５１，２５２，２６１は、押出形材であるため、押し出し方向に長い中空構造物２０１Ｂを容易に製造することができる。また、連結部材２５１，２５２，２６１を用いることにより、少ない部品点数で複数の中空部Ｍを備えた中空構造物２０１Ｂを形成することができる。 According to the hollow structure manufacturing method according to the present embodiment described above, the bobbin tool 31 can be used to frictionally stir weld the entire length in the height direction of each butt portion J231 to J238 at a time. 201B can be manufactured easily. Further, since the connecting members 251, 252, and 261 are extruded shapes, the hollow structure 201B that is long in the extrusion direction can be easily manufactured. Further, by using the connecting members 251, 252, and 261, the hollow structure 201B having a plurality of hollow portions M can be formed with a small number of parts.
［第十五実施形態］
　次に、本発明の第十五実施形態に係る中空構造物及び中空構造物の製造方法について説明する。図３７に示すように、第十五実施形態に係る中空構造物２０１Ｃは、中空部Ｍ，Ｍを隔てるＩ字状部材２８１が断面Ｔ字状を呈する連結部材（金属部材）２７１，２７１で形成されている点で第十四実施形態と相違する。第十五実施形態については第十四実施形態と相違する部分を中心に説明する。連結部材２７１は、断面Ｔ字状を呈する押し出し形材である。連結部材２７１は、基部２７１ａと、基部２７１ａの中央から垂直に延設された延設部２７１ｂとで構成されている。連結部材２７１は、摩擦攪拌可能な金属で形成されており、本実施形態ではアルミニウム合金製である。 [Fifteenth embodiment]
Next, a hollow structure and a method for manufacturing the hollow structure according to the fifteenth embodiment of the present invention will be described. As shown in FIG. 37, a hollow structure 201C according to the fifteenth embodiment is formed by connecting members (metal members) 271 and 271 having a T-shaped cross section in an I-shaped member 281 separating the hollow portions M and M. This is different from the fourteenth embodiment. The fifteenth embodiment will be described with a focus on differences from the fourteenth embodiment. The connecting member 271 is an extruded shape member having a T-shaped cross section. The connecting member 271 includes a base portion 271a and an extending portion 271b extending vertically from the center of the base portion 271a. The connecting member 271 is made of a metal capable of friction stirring, and is made of an aluminum alloy in the present embodiment.
　本実施形態に係る中空構造物の製造方法では、まず、Ｉ字状部材２８１を形成する。当該工程では、突合せ工程と、摩擦攪拌工程を行う。当該突合せ工程では、一方の連結部材２７１の延設部２７１ｂの端面２７１ｃと、他方の連結部材２７１の延設部２７１ｂの端面２７１ｃとを突き合わせて突合せ部Ｊ２４１を形成する。また、当該摩擦攪拌工程では、第十二実施形態に係る第一工程の摩擦攪拌工程と同じ要領で、ボビンツール３１（図２参照）を用いて突合せ部Ｊ２４１に対して摩擦攪拌接合を行う。本実施形態の中空構造物の製造方法では、Ｉ字状部材２８１を形成する工程よりも後の工程は第十四実施形態と同じであるため説明を省略する。 In the method for manufacturing a hollow structure according to this embodiment, first, an I-shaped member 281 is formed. In the said process, a butt | matching process and a friction stirring process are performed. In the butting step, the end surface 271c of the extending portion 271b of one connecting member 271 and the end surface 271c of the extending portion 271b of the other connecting member 271 are butted to form a butting portion J241. In the friction stirring step, friction stir welding is performed on the butt joint J241 using the bobbin tool 31 (see FIG. 2) in the same manner as the friction stirring step of the first step according to the twelfth embodiment. In the method for manufacturing a hollow structure according to the present embodiment, the steps after the step of forming the I-shaped member 281 are the same as those in the fourteenth embodiment, and thus the description thereof is omitted.
　本実施形態に係る中空構造物の製造方法のように、中空部Ｍ，Ｍの間に配設されるＩ字状部材２８１を複数の連結部材２７１，２７１で構成してもよい。このようにしても、第十四実施形態と略同等の効果を奏することができる。 The I-shaped member 281 disposed between the hollow portions M and M may be composed of a plurality of connecting members 271 and 271 as in the method for manufacturing a hollow structure according to the present embodiment. Even if it does in this way, there can exist an effect substantially equivalent to 14th embodiment.
　以上本発明の第十四実施形態及び第十五実施形態に係る中空構造物及び中空構造物の製造方法について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。例えば、Ｉ字状を呈する連結部材２６１（図３５参照）又はＩ字状部材２８１を複数個設けて中空部Ｍを３つ以上備えた中空構造物を形成してもよい。 Although the hollow structure and the manufacturing method of the hollow structure according to the fourteenth embodiment and the fifteenth embodiment of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, a hollow structure having three or more hollow portions M by providing a plurality of I-shaped connecting members 261 (see FIG. 35) or I-shaped members 281 may be formed.
　また、例えば、断面略Ｉ字状又は一対の断面略Ｔ字状を呈し隣接する中空部を構成する連結部材（金属部材）を含むとともに、断面略Ｕ字状を呈する連結部材（金属部材）及び断面略Ｌ字状を呈する連結部材（金属部材）の少なくともいずれかを含んでこれらを組み合わせ複数の中空部を備えた中空構造物を形成してもよい。
　また、例えば、断面略Ｉ字状又は一対の断面略Ｔ字状を呈し隣接する中空部を構成する連結部材（金属部材）及び板状部材（金属部材）を含むとともに、断面略Ｕ字状を呈する連結部材（金属部材）及び断面略Ｌ字状を呈する連結部材（金属部材）の少なくともいずれかを含んでこれらを組合わせ複数の中空部を備えた中空構造物を形成してもよい。 In addition, for example, a connection member (metal member) having a substantially I-shaped cross section or a pair of substantially T-shaped cross sections and forming an adjacent hollow portion, and a connection member (metal member) exhibiting a substantially U-shaped cross section, and A hollow structure including a plurality of hollow portions may be formed by combining at least one of the connecting members (metal members) having a substantially L-shaped cross section.
In addition, for example, it includes a connecting member (metal member) and a plate-like member (metal member) that form a substantially hollow I-shaped section or a pair of substantially T-shaped cross sections and constitute adjacent hollow portions, and have a substantially U-shaped cross section. A hollow structure including a plurality of hollow portions may be formed by combining at least one of a connecting member (metal member) to be presented and a connecting member (metal member) having a substantially L-shaped cross section.
　１　　　中空構造物
　１１　　連結部材
　１２　　連結部材
　１３　　連結部材
　１４　　連結部材
　１５　　連結部材
　１６　　連結部材
　２１　　板状部材
　２２　　板状部材
　２３　　板状部材
　２４　　板状部材
　２５　　板状部材
　２６　　板状部材
　２７　　板状部材
　Ｗ　　　塑性化領域 DESCRIPTION OF SYMBOLS 1 Hollow structure 11 Connection member 12 Connection member 13 Connection member 14 Connection member 15 Connection member 16 Connection member 21 Plate member 22 Plate member 23 Plate member 24 Plate member 25 Plate member 26 Plate member 27 Plate member W Plasticization region

Claims (13)

  1. 　断面矩形の複数の中空部を備えた金属製の中空構造物の製造方法であって、
    　前記中空部を構成する複数の板状部材を成形するとともに、前記中空部の角部を構成し少なくとも二つ以上の前記板状部材を連結する複数の連結部材を押出成形によって成形する準備工程と、
    　断面矩形の中空部が形成されるように各前記板状部材と各前記連結部材とを突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする中空構造物の製造方法。     A method for producing a hollow structure made of metal having a plurality of hollow portions having a rectangular cross section,
    A step of forming a plurality of plate-like members constituting the hollow portion and a step of forming a plurality of connecting members constituting the corner portions of the hollow portion and connecting at least two plate-like members by extrusion molding ,
    A butting step of butting each plate-like member and each connecting member so as to form a hollow section having a rectangular cross section to form a plurality of butting portions;
    And a friction stirring step of friction stir welding the abutting portions using a bobbin tool.
  2. 　前記連結部材は、断面Ｔ字状、断面Ｌ字状、断面Ｕ字状又は断面Ｉ字状のいずれかを呈することを特徴とする請求項１に記載の中空構造物の製造方法。 The method for manufacturing a hollow structure according to claim 1, wherein the connecting member has any one of a T-shaped section, an L-shaped section, a U-shaped section, or an I-shaped section.
  3. 　前記摩擦攪拌工程では、押圧力を付与できる押圧部材と架台に移動不能に拘束された受け部材とで、前記連結部材及び前記板状部材を挟持した状態で摩擦攪拌接合を行うことを特徴とする請求項１又は請求項２に記載の中空構造物の製造方法。 In the friction agitation step, friction agitation joining is performed in a state where the connecting member and the plate-like member are sandwiched between a pressing member capable of applying a pressing force and a receiving member restrained immovably on a gantry. The manufacturing method of the hollow structure of Claim 1 or Claim 2.
  4. 　断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、
    　板状を呈する基部及び前記基部から斜めに延設された一対の板状の延設部を有する断面略Ｋ字状の連結部材を押出成形によって成形する準備工程と、
    　断面三角形の複数の中空部が形成されるように各前記連結部材を突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする中空構造物の製造方法。     A method for producing a hollow structure made of metal having a plurality of hollow portions having a triangular cross section,
    A preparatory step of forming a connecting member having a substantially K-shaped cross section having a plate-like base portion and a pair of plate-like extending portions extending obliquely from the base portion by extrusion molding;
    A butting step of butting each of the connecting members to form a plurality of butting portions so that a plurality of hollow portions having a triangular cross section are formed;
    And a friction stirring step of friction stir welding the abutting portions using a bobbin tool.
  5. 　断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、
    　板状を呈する基部及び前記基部から斜めに延設された一対の板状の延設部を有する断面略Ｋ字状の連結部材を押出成形によって成形するとともに、隣り合う前記連結部材の間に配置される板状部材を成形する準備工程と、
    　断面三角形の複数の中空部が形成されるように各前記連結部材と各前記板状部材とを突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする中空構造物の製造方法。     A method for producing a hollow structure made of metal having a plurality of hollow portions having a triangular cross section,
    A connecting member having a substantially K-shaped cross section having a plate-like base portion and a pair of plate-like extending portions extending obliquely from the base portion is formed by extrusion molding and disposed between the adjacent connecting members. A preparation step of forming a plate-shaped member to be formed;
    A butting step of butting each connecting member and each plate-like member to form a plurality of butting portions so that a plurality of hollow portions having a triangular cross section are formed;
    And a friction stirring step of friction stir welding the abutting portions using a bobbin tool.
  6. 　断面三角形の複数の中空部を備えた金属製の中空構造物の製造方法であって、
    　断面三角形の複数の中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、
    　前記金属部材は、板状の基部と、前記基部から延設された単数又は複数の延設部とを少なくとも有する連結部材で構成されており、前記連結部材を押出成形によって成形することを特徴とする中空構造物の製造方法。     A method for producing a hollow structure made of metal having a plurality of hollow portions having a triangular cross section,
    A butting step of butting a plurality of metal members to form a plurality of butted portions so that a plurality of hollow portions having a triangular cross section are formed;
    A friction stir step for friction stir welding the abutting portions using a bobbin tool,
    The metal member is composed of a connecting member having at least a plate-like base portion and one or a plurality of extending portions extending from the base portion, and the connecting member is formed by extrusion molding. A method for producing a hollow structure.
  7. 　前記突合せ工程では、隣り合う前記連結部材の間に板状部材を配置するとともに、前記連結部材と前記板状部材とで突合せ部を形成し、
    　前記摩擦攪拌工程では、前記ボビンツールを用いて前記連結部材と前記板状部材との突合せ部も摩擦攪拌接合することを特徴とする請求項６に記載の中空構造物の製造方法。     In the butting step, a plate-like member is disposed between the adjacent linking members, and a butt portion is formed by the linking member and the plate-like member,
    The method for producing a hollow structure according to claim 6, wherein, in the friction stirring step, the abutting portion between the connecting member and the plate member is also friction stir welded using the bobbin tool.
  8. 　断面矩形の１つの中空部を備えた金属製の中空構造物の製造方法であって、
    　断面矩形の１つの中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、
    　前記中空構造物を構成する前記金属部材は、
    　断面略Ｕ字状を呈する連結部材及び断面略Ｌ字状を呈する連結部材の少なくともいずれかを含み、前記連結部材を押し出し成形で成形することを特徴とする中空構造物の製造方法。     A method for manufacturing a hollow structure made of metal having one hollow section having a rectangular cross section,
    A butting step of butting a plurality of metal members to form a plurality of butted portions so that one hollow portion having a rectangular cross section is formed;
    A friction stir step for friction stir welding the abutting portions using a bobbin tool,
    The metal member constituting the hollow structure is
    A method for producing a hollow structure, comprising at least one of a connecting member having a substantially U-shaped cross section and a connecting member having a substantially L-shaped cross section, wherein the connecting member is formed by extrusion molding.
  9. 　断面矩形の複数の中空部を備えた金属製の中空構造物の製造方法であって、
    　断面矩形の複数の中空部が形成されるように複数の金属部材を突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、
    　前記中空構造物を構成する前記金属部材は、
    　断面略Ｉ字状又は一対の断面略Ｔ字状を呈し隣接する前記中空部を構成する連結部材を含むとともに、
    　断面略Ｕ字状を呈する連結部材及び断面略Ｌ字状を呈する連結部材の少なくともいずれかを含み、前記連結部材を押し出し成形で成形することを特徴とする中空構造物の製造方法。     A method for producing a hollow structure made of metal having a plurality of hollow portions having a rectangular cross section,
    A butting step of butting a plurality of metal members to form a plurality of butted portions so that a plurality of hollow portions having a rectangular cross section are formed;
    A friction stir step for friction stir welding the abutting portions using a bobbin tool,
    The metal member constituting the hollow structure is
    Including a connecting member that has a substantially I-shaped cross section or a pair of substantially T-shaped cross sections and constitutes the adjacent hollow portion;
    A method for producing a hollow structure, comprising at least one of a connecting member having a substantially U-shaped cross section and a connecting member having a substantially L-shaped cross section, wherein the connecting member is formed by extrusion molding.
  10. 　前記摩擦攪拌工程では、押圧力を付与できる押圧部材と架台に移動不能に拘束された受け部材とで、各前記金属部材を挟持した状態で摩擦攪拌接合を行うことを特徴とする請求項８又は請求項９に記載の中空構造物の製造方法。 The friction stir welding is performed in a state where each metal member is sandwiched between a pressing member capable of applying a pressing force and a receiving member restrained so as not to move on a gantry in the friction stirring step. The manufacturing method of the hollow structure of Claim 9.
  11. 　板状の基部及び前記基部の対向する両側面のうちの少なくとも一方から延設された単数又は複数の板状の延設部を備えた連結部材を押出成形によって成形するとともに、複数の板状部材を成形する準備工程と、
    　前記延設部の端面と前記板状部材の端面とを突き合わせて複数の突合せ部を形成する突合せ工程と、
    　ボビンツールを用いて各前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする接合方法。     A plurality of plate-like members are formed by extrusion molding a connecting member having a plate-like base portion and one or more plate-like extension portions extending from at least one of both opposing side surfaces of the base portion. A preparatory process for molding,
    A butting step of butting the end surface of the extending portion and the end surface of the plate-like member to form a plurality of butting portions;
    A friction stirring step of friction stir welding the abutting portions using a bobbin tool.
  12. 　前記連結部材は、断面Ｋ字状、断面Ｔ字状、断面Ｉ字状、断面クロス状又は断面放射状を呈することを特徴とする請求項１１に記載の接合方法。 The joining method according to claim 11, wherein the connecting member has a K-shaped cross section, a T-shaped cross section, an I-shaped cross section, a cross-shaped cross section, or a radial cross section.
  13. 　前記基部の両端部及び前記延設部の端部のいずれか一つの板厚が、前記基部の両端部及び前記延設部の端部の他の板厚と異なるように成形することを特徴とする請求項１１又は請求項１２に記載の接合方法。 The thickness of any one of the both ends of the base and the end of the extended portion is formed to be different from the other plate thicknesses of the both ends of the base and the end of the extended portion, The joining method according to claim 11 or claim 12.
PCT/JP2016/080169 2015-11-09 2016-10-12 Method for manufacturing and method for joining hollow structure WO2017081973A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680066827.XA CN108349041A (en) 2015-11-09 2016-10-12 The manufacturing method and joint method of hollow structure object

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2015219031 2015-11-09
JP2015-219031 2015-11-09
JP2016-001134 2016-01-06
JP2016001134A JP2017121641A (en) 2016-01-06 2016-01-06 Manufacturing method of hollow structure
JP2016041703A JP6728783B2 (en) 2015-11-09 2016-03-04 Hollow structure manufacturing method and joining method
JP2016-041703 2016-03-04

Publications (1)

Publication Number Publication Date
WO2017081973A1 true WO2017081973A1 (en) 2017-05-18

Family

ID=58695062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/080169 WO2017081973A1 (en) 2015-11-09 2016-10-12 Method for manufacturing and method for joining hollow structure

Country Status (1)

Country Link
WO (1) WO2017081973A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004141946A (en) * 2002-10-25 2004-05-20 Mitsubishi Heavy Ind Ltd Double skin panel manufactured by traction swirling joining and method for manufacturing broad panel using the panel
JP2008302421A (en) * 2007-06-11 2008-12-18 Nikkeikin Aluminium Core Technology Co Ltd Joining jig
JP2009148811A (en) * 2007-12-21 2009-07-09 Nippon Light Metal Co Ltd Joining method
JP2010149849A (en) * 2010-01-25 2010-07-08 Kawasaki Heavy Ind Ltd Side body structure of railroad vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004141946A (en) * 2002-10-25 2004-05-20 Mitsubishi Heavy Ind Ltd Double skin panel manufactured by traction swirling joining and method for manufacturing broad panel using the panel
JP2008302421A (en) * 2007-06-11 2008-12-18 Nikkeikin Aluminium Core Technology Co Ltd Joining jig
JP2009148811A (en) * 2007-12-21 2009-07-09 Nippon Light Metal Co Ltd Joining method
JP2010149849A (en) * 2010-01-25 2010-07-08 Kawasaki Heavy Ind Ltd Side body structure of railroad vehicle

Similar Documents

Publication Publication Date Title
KR100428552B1 (en) Member and hollow frame member for friction welding
US20140004375A1 (en) Friction stir welding method for metal material and metal material welded body obtained thereby
WO2017081973A1 (en) Method for manufacturing and method for joining hollow structure
JP4924573B2 (en) Friction stir welding method for double skin panels
JP6728783B2 (en) Hollow structure manufacturing method and joining method
JP2008272768A (en) Welding joint and structure of double skin panel
JPH10286682A (en) Production of aluminum article with rib
JP4463183B2 (en) Aluminum structure and manufacturing method thereof
JP2017121641A (en) Manufacturing method of hollow structure
JP3329738B2 (en) Extruded material joining method
CN108349041A (en) The manufacturing method and joint method of hollow structure object
JP4336351B2 (en) Structure
JPH11267858A (en) Friction jointing member and its jointing method, and jointing panel
JPH10216964A (en) Manufacture of aluminum wide flange shape
JPH11320130A (en) Butt joint structure
JP4043005B2 (en) Friction welding method
JP4195578B2 (en) Multi-row member assembly by friction stir
JP4320086B2 (en) Honeycomb panel assembly
JP3926643B2 (en) Aluminum pipe frame manufacturing method
JP2024040038A (en) Joint structure of structural material
JP2007326117A (en) Double skin panel and its bonded joint, and structural body
JP2003105856A (en) Split t-shaped joint metal, and structure of jointing between column and beam
JP4402062B2 (en) Friction stir welding method
JP2006224160A (en) Extruded hollow shape material and railroad car structure formed therewith
JP2000085038A (en) Method for joining extruded shape, extruded shape, and extruded shape for joining

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16863937

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16863937

Country of ref document: EP

Kind code of ref document: A1