JP3488402B2 - Extruded material for friction stir welding - Google Patents

Extruded material for friction stir welding

Info

Publication number
JP3488402B2
JP3488402B2 JP25973999A JP25973999A JP3488402B2 JP 3488402 B2 JP3488402 B2 JP 3488402B2 JP 25973999 A JP25973999 A JP 25973999A JP 25973999 A JP25973999 A JP 25973999A JP 3488402 B2 JP3488402 B2 JP 3488402B2
Authority
JP
Japan
Prior art keywords
friction stir
plate
stir welding
rotary tool
ribs
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP25973999A
Other languages
Japanese (ja)
Other versions
JP2001081903A (en
Inventor
健 川崎
年旦 佐川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP25973999A priority Critical patent/JP3488402B2/en
Publication of JP2001081903A publication Critical patent/JP2001081903A/en
Application granted granted Critical
Publication of JP3488402B2 publication Critical patent/JP3488402B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • 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
    • B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/045—Hollow panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Extrusion Of Metal (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明はアルミニウム合金等
の重ね継ぎ手の摩擦攪拌接合に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to friction stir welding of lap joints made of aluminum alloy or the like.

【０００２】[0002]

【従来の技術】摩擦攪拌接合方法は、接合部に挿入した
丸棒（回転工具という。）を回転させながら接合線に沿
って移動させ、接合部を発熱、軟化させ、塑性流動さ
せ、固相接合する方法である。回転工具は、接合部に挿
入する小径部と、外部に位置する大径部とからなる。小
径部と大径部は同軸である。小径部と大径部との境は接
合部に若干挿入されている。2. Description of the Related Art In the friction stir welding method, a round bar (referred to as a rotary tool) inserted into a joint is rotated and moved along a joint line to heat the joint, soften it, and cause it to plastically flow to solid-phase. It is a method of joining. The rotary tool is composed of a small diameter portion to be inserted into the joint and a large diameter portion located outside. The small diameter portion and the large diameter portion are coaxial. The boundary between the small diameter portion and the large diameter portion is slightly inserted in the joint portion.

【０００３】これは、Presented at IBEC 98, Detroit,
MI, USA, 29 Sept - 10ct 1998, No 98IBECC-37 "Appl
ication of Friction Stir Welding to Lightweight Ve
hicles"（以下、文献１という。）、および特開平９−
３０９１６４号公報（ＥＰ０７９７０４３Ａ２）（以
下、文献２という。）に示されている。前記文献１の図
４には重ね接合が示されている。後者の文献の図９には
中空の押し出し形材の二面の接合を一方の面から行うこ
とが示されている。また、中空形材の変形を防止する継
ぎ手が示されている。This is Presented at IBEC 98, Detroit,
MI, USA, 29 Sept-10ct 1998, No 98IBECC-37 "Appl
ication of Friction Stir Welding to Lightweight Ve
hicles "(hereinafter referred to as Document 1), and JP-A-9-
309164 (EP0797043A2) (hereinafter referred to as Document 2). FIG. 4 of the aforementioned document 1 shows a lap joint. In FIG. 9 of the latter document, it is shown that two surfaces of hollow extruded frame members are joined from one surface. Also, a joint for preventing deformation of the hollow frame is shown.

【０００４】[0004]

【発明が解決しようとする課題】摩擦攪拌接合は、被接
合部材を近接させ、両者を十分に攪拌して混合すること
により接合するプロセスである。不十分な攪拌は、欠陥
の発生による強度低下、見栄えの低下などの品質低下を
引き起こす。このため、接合部の品質を確保するために
は被接合部材を十分に攪拌して混合することが重要にな
る。摩擦攪拌接合は回転工具を回転させて行うので、回
転工具と被接合部材との摩擦に伴う被接合部材の流動は
主に回転方向のみである。回転軸方向にはほとんど攪拌
されない。Friction stir welding is a process in which members to be welded are brought close to each other, and the two are welded by sufficiently stirring and mixing them. Insufficient stirring causes quality deterioration such as strength deterioration and appearance deterioration due to the generation of defects. Therefore, it is important to sufficiently stir and mix the members to be joined in order to ensure the quality of the joined portion. Since friction stir welding is performed by rotating the rotary tool, the flow of the members to be welded due to the friction between the rotary tool and the members to be welded is mainly in the rotational direction. Almost no agitation occurs in the direction of the rotation axis.

【０００５】このことは、Script Materially. Vol.40,
No.9, pp.1041-1046, 1999 "SOLID-STATE FLOW VISUAL
IZATION IN THE FRICTION-STIR WELDING OF 2024 AL TO
6061 AL" （以下、文献3という。）の図２に示された
とおりである。これによれば被接合部材は回転工具の回
転方向には十分に攪拌されているが、回転工具の挿入方
向すなわち回転工具の軸方向（被接合部材の厚さ方向、
重ね方向）にはほとんど攪拌されていないことがよく分
かる。This is because Script Materially. Vol.40,
No.9, pp.1041-1046, 1999 "SOLID-STATE FLOW VISUAL
IZATION IN THE FRICTION-STIR WELDING OF 2024 AL TO
This is as shown in Fig. 2 of 6061 AL "(hereinafter referred to as Reference 3). According to this, the members to be welded are sufficiently agitated in the rotation direction of the rotary tool, but the insertion direction of the rotary tool is That is, the axial direction of the rotary tool (thickness direction of the members to be joined,
It can be seen that there is almost no stirring in the stacking direction).

【０００６】突き合わせ部を摩擦攪拌接合方法によって
接合すると、被接合部材は十分に攪拌され、所要の品質
の継ぎ手を得ることができる。これは被接合部材の接触
面が回転工具の回転軸に平行、すなわち前記接触面が回
転工具の回転方向に対して直角方向斜め、回転工具の回
転が接触面を攪拌し混合するためである。この場合の機
械的特性は、従来のアーク溶接の場合と比較して良好で
あることが知られている。これは例えば、Science and
Technology of Welding and Joining 1997 Vol.2 No.5
pp.199-208 "Mechanical properties of welded joints
in thin walled aluminum extrusions"に示されている
（以下、文献４という。）。When the abutting portions are joined by the friction stir welding method, the members to be joined are sufficiently agitated, and the joint having the required quality can be obtained. This is because the contact surface of the members to be welded is parallel to the rotation axis of the rotary tool, that is, the contact surface is oblique at right angles to the rotation direction of the rotary tool, and the rotation of the rotary tool stirs and mixes the contact surface. The mechanical properties in this case are known to be better than in the case of conventional arc welding. This is, for example, Science and
Technology of Welding and Joining 1997 Vol.2 No.5
pp.199-208 "Mechanical properties of welded joints
in thin walled aluminum extrusions "(hereinafter referred to as Reference 4).

【０００７】しかし、摩擦攪拌接合方法によって、重ね
接合のように、接合面と回転工具の回転方向が平行な接
合を行う場合は、突き合わせ部のような機械的特性を得
ることは困難である。回転工具と被接合部材との摩擦に
伴う被接合部材の流動は主に回転方向のみである。回転
軸方向にはほとんど攪拌されない。このため、重ね接合
のように、接合面と回転工具の回転方向が平行である場
合は、機械的特性が大きくない。However, when the friction stir welding method is used to perform joining such that the joining surface and the rotational direction of the rotary tool are parallel to each other, such as lap joining, it is difficult to obtain mechanical characteristics such as a butt portion. The flow of the members to be joined due to the friction between the rotary tool and the members to be joined is mainly in the rotational direction. Almost no agitation occurs in the direction of the rotation axis. Therefore, when the joining surface and the rotation direction of the rotary tool are parallel to each other, as in lap joining, the mechanical characteristics are not large.

【０００８】これは前記文献１の図４に示されている。
図４の接合部の上下の中央部には水平方向に沿った黒色
の線が認められる。これは接合前の被接合部材の表面に
存在していた酸化皮膜である。被接合部材の表面に存在
していた酸化皮膜が接合後も接合前の状態とほとんど変
化せず、重ね面に存在している。これは回転方向に平行
な重ね面は十分な攪拌が行われないことを示している。
このため、引張り試験を行うと、２つの被接合部材はこ
の重ね面に沿って離れる。つまり、強度が小さい。この
ため、重ね接合は強度部材には採用困難である。This is shown in FIG. 4 of the above document 1.
Black lines along the horizontal direction are observed in the upper and lower central portions of the joint portion in FIG. This is an oxide film existing on the surfaces of the members to be joined before joining. The oxide film existing on the surfaces of the members to be joined remains almost unchanged from the state before joining even after joining and is present on the lap surface. This indicates that sufficient agitation is not performed on the overlapping surface parallel to the rotation direction.
Therefore, when the tensile test is performed, the two members to be joined are separated along the overlapping surface. That is, the strength is low. For this reason, lap joining is difficult to employ for a strength member.

【０００９】本発明の目的は、重ね部の摩擦攪拌接合に
おいて高強度の接合が得られるようにすることにある。It is an object of the present invention to obtain high strength welding in friction stir welding of overlapping portions.

【００１０】[0010]

【課題を解決するための手段】上記目的は、板の両端に
おいて、それぞれ板の厚さ方向に突出する凸部があり、
前記凸部の反対側の面は相手の部材に重ねる面であっ
て、前記板の幅方向に沿っており、前記重ねる面は前記
板の幅方向に対して傾斜しており、前記凸部の上面は、
摩擦攪拌接合用の回転工具の軸心に直交しており、前記
両端は前記板の厚さ方向に重ね摩擦攪拌接合する部分で
あること、によって達成できる。SUMMARY OF THE INVENTION The above object is across the plate
In each, there is a convex portion protruding in the thickness direction of the plate,
The surface on the opposite side of the convex part is the surface that overlaps with the other member.
Along the width direction of the plate, the overlapping surface is the
Inclined with respect to the width direction of the plate, the upper surface of the convex portion,
Is perpendicular to the axis of the rotary tool for friction stir welding, said end can be accomplished by a <br/> Oh Turkey at a portion friction stir welding overlapped in the thickness direction of the plate.

【００１１】[0011]

【発明の実施の形態】本発明の一実施例を図１から図２
により説明する。この実施例は接合部に引張り荷重が作
用する強度部材として用いられる。２つの部材３１０、
３２０は端部を重ねている。部材３１０の一方の端部と
部材３２０の他方の端部とを重ね、重ねた部分は部材３
１０の他方の端部と部材３２０の他方の端部との間にあ
る。重ね面３１０ｂ、３２０ｂは傾斜している。重ね面
３１０ｂ、３２０ｂの傾斜角度は例えば４度から１０度
である。他の上下の面３１０ｃ、３１０ｄ（３２０ｃ、
３２０ｄ）は平行で、水平である。部材３２０の下面３
２０ｄは架台に載せられている。部材３１０、３２０は
押し出し形材である。BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIGS.
Will be described. This embodiment is used as a strength member in which a tensile load acts on the joint. Two members 310,
320 has overlapping ends. The one end of the member 310 and the other end of the member 320 are overlapped, and the overlapped portion is the member 3
Between the other end of 10 and the other end of member 320. The overlapping surfaces 310b and 320b are inclined. The inclination angle of the overlapping surfaces 310b and 320b is, for example, 4 degrees to 10 degrees. The other upper and lower surfaces 310c, 310d (320c,
320d) are parallel and horizontal. Lower surface 3 of member 320
20d is mounted on a stand. The members 310 and 320 are extruded frame members.

【００１２】この状態において、摩擦攪拌接合装置の回
転工具２５０を上方から重ね部に挿入した状態で、接合
線に沿って移動させ、摩擦攪拌接合する。回転工具２５
０の軸心は鉛直方向（接合部の法線に沿った方向）であ
る。ただし、回転工具２５０の進行方向に対しては軸心
は公知のように傾斜している。接合線は、図１の紙面に
対して垂直方向にある。重ね面３１０ｂ、３２０ｂは接
合線（接合方向）に対して直角方向にある。重ね面３１
０ｂ、３２０ｂは２つの部材３１０、３２０の端部の間
にあるといえる。回転工具２５０の移動は部材３１０、
３２０に対して相対的に移動させればよい。In this state, the rotary tool 250 of the friction stir welding apparatus is inserted along the joining line from above and friction stir welding is performed along the joining line. Rotating tool 25
The axis center of 0 is the vertical direction (direction along the normal to the joint). However, the axis is inclined with respect to the traveling direction of the rotary tool 250 as is known. The joining line is in the direction perpendicular to the paper surface of FIG. The overlapping surfaces 310b and 320b are perpendicular to the joining line (joining direction). Layer 31
It can be said that 0b and 320b are between the ends of the two members 310 and 320. The movement of the rotary tool 250 is performed by the member 310,
It may be moved relative to 320.

【００１３】回転工具２５０は大径部２５２とその先端
の小径部２５１とからなる。小径部２５１はねじであ
る。小径部２５１は重ね面３１０ｂ、３２０ｂよりも深
く挿入している。小径部２５１の先端は下方の部材３２
０の下面３２０ｄ近くまで深く挿入している。大径部２
５２の下端は部材３１０の上面３１０ｃよりも若干挿入
されている。The rotary tool 250 comprises a large diameter portion 252 and a small diameter portion 251 at its tip. The small diameter portion 251 is a screw. The small diameter portion 251 is inserted deeper than the overlapping surfaces 310b and 320b. The tip of the small diameter portion 251 has a lower member 32.
It is deeply inserted up to near the bottom surface 320d of 0. Large diameter part 2
The lower end of 52 is slightly inserted from the upper surface 310c of the member 310.

【００１４】図２は接合後の状態を示すもので、ハッチ
ングは接合ビード（熱影響部）を示す。接合ビードの大
きさは挿入した回転工具２５０の外形よりも若干大き
い。これによれば、回転工具２５０の回転軸は垂直であ
るが、重ね面３１０ｂ、３２０ｂは水平面に対して傾斜
している。このため、重ね面３１０ｂ、３２０ｂは回転
工具２５０の軸心に対して傾斜しているといえる。この
ため、重ね面３１０ｂ、３２０ｂは回転工具２５０の回
転方向に対して傾斜することになる。このため、部材３
１０、３２０は重ね面３１０ｂ、３２０ｂの傾斜角度に
応じて攪拌され混合されることになる。つまり、回転工
具２５０の軸心方向にも混合されることになる。したが
って、接合前に酸化皮膜があったとしても、良好に混合
される。このため、部材３１０、３２０を左右に引張っ
ても高強度の接合が得られる。よって、部材３１０、３
２０を左右に引張る強度部材として使用できるものであ
る。FIG. 2 shows the state after joining, and the hatching shows the joining bead (heat-affected zone). The size of the weld bead is slightly larger than the outer shape of the inserted rotary tool 250. According to this, the rotation axis of the rotary tool 250 is vertical, but the overlapping surfaces 310b and 320b are inclined with respect to the horizontal plane. Therefore, it can be said that the overlapping surfaces 310b and 320b are inclined with respect to the axis of the rotary tool 250. Therefore, the overlapping surfaces 310b and 320b are inclined with respect to the rotation direction of the rotary tool 250. Therefore, the member 3
10, 320 are agitated and mixed according to the inclination angle of the overlapping surfaces 310b, 320b. That is, the rotary tool 250 is also mixed in the axial direction. Therefore, even if there is an oxide film before joining, they are mixed well. Therefore, even if the members 310 and 320 are pulled left and right, high-strength bonding can be obtained. Therefore, the members 310, 3
It can be used as a strength member that pulls 20 to the left and right.

【００１５】図３および図４の実施例を説明する。部材
３３０、３４０は端部を重ねている。部材３３０、３４
０は凸部３３０ｅを除き、平板である。重ね面は水平で
ある。回転工具２５０は鉛直に対して４度から１０度傾
斜している。傾斜方向は部材３３０、３４０の端部方向
である。これによっても前記実施例と同様の効果が得ら
れる。上側、すなわち、回転工具２５０側の部材３３０
には回転工具２５０側に突出する凸部３３０ｅを設けて
いる。The embodiment shown in FIGS. 3 and 4 will be described. The members 330, 340 have overlapping ends. Members 330, 34
0 is a flat plate except for the convex portion 330e. The overlapping surface is horizontal. The rotary tool 250 is inclined at 4 to 10 degrees with respect to the vertical. The direction of inclination is toward the ends of the members 330, 340. With this, the same effect as that of the above-described embodiment can be obtained. The member 330 on the upper side, that is, on the rotary tool 250 side
Is provided with a protrusion 330e protruding toward the rotary tool 250.

【００１６】凸部３３０ｅは部材３３０の板部の端部に
おいて、板部の上面の延長線上から厚さｔ１、ｔ２の突
出量を有する。板部の端部および凸部３３０ｅのｔ１部
の端部は板部に対して実質的の直交している。板部の端
部および凸部３３０ｅのｔ１部の端部は実質的に同一面
にある。凸部３３０ｅの上面は傾斜している。すなわ
ち、凸部３３０ｅの上面は回転工具２５０の軸心に直交
している。これによれば、部材３３０において不要な部
分を少なくできる。図４においてハッチングの接合ビー
ドは傾斜している。The convex portion 330e has a protrusion amount of thickness t1 and t2 from the extension line of the upper surface of the plate portion at the end of the plate portion of the member 330. The end of the plate and the end of the t1 portion of the protrusion 330e are substantially orthogonal to the plate. The end of the plate portion and the end of the t1 portion of the protrusion 330e are substantially on the same plane. The upper surface of the protrusion 330e is inclined. That is, the upper surface of the protrusion 330e is orthogonal to the axis of the rotary tool 250. According to this, the unnecessary portion of the member 330 can be reduced. In FIG. 4, the hatched joining beads are inclined.

【００１７】図５から図８によって、本発明を鉄道車両
の車体に適用した実施例を説明する。以下の説明におい
て、図５に記載のない部品番号を使用することがある。
その場合はその部品番号から１０を減算した部品番号が
右半分の部品番号の部品に相当する。図５は図６の要部
拡大図、図６は図７の要部拡大図、図７は図８の側構体
の要部の縦断面図である。An embodiment in which the present invention is applied to a vehicle body of a railway vehicle will be described with reference to FIGS. In the following description, part numbers not shown in FIG. 5 may be used.
In this case, the part number obtained by subtracting 10 from the part number corresponds to the right half part number. 5 is an enlarged view of a main part of FIG. 6, FIG. 6 is an enlarged view of a main part of FIG. 7, and FIG. 7 is a vertical cross-sectional view of the main part of the side structure of FIG.

【００１８】車体２００は、側面を構成する側構体２０
１、屋根を構成する屋根構体２０２、床を構成する台枠
２０３、長手方向の端部を構成する妻構体２０４からな
る。側構体２０１、屋根構体２０２、台枠２０３は、そ
れぞれ複数の押し出し形材を接合して構成している。押
し出し形材の長手方向を車体の長手方向にしている。押
し出し形材はアルミニウム合金製の中空形材である。側
構体２０１を構成する中空形材１０、２０の構成および
接合方法について説明する。他の箇所、他の構体も同様
である。The vehicle body 200 has a side structure 20 constituting a side surface.
1. A roof structure 202 that forms a roof, an underframe 203 that forms a floor, and a gable structure 204 that forms an end in the longitudinal direction. The side structure 201, the roof structure 202, and the underframe 203 are each configured by joining a plurality of extruded frame members. The longitudinal direction of the extruded frame member is the longitudinal direction of the vehicle body. The extruded profile is a hollow profile made of aluminum alloy. The configuration and joining method of the hollow frame members 10 and 20 that form the side structure 201 will be described. The same applies to other parts and other structures.

【００１９】中空形材１０、２０は二枚の面板１１、１
２、２１、２２とトラス状に配置した複数のリブ１３、
２３からなる。二枚の面板１１、１２（２１、２２）は
実質的に平行である。リブ１３、２３によるトラスのピ
ッチは同一である。トラスはリブ１３、２３、面板１
１、１２、２１、２２の板厚の中心線によって構成され
る。頂点は面板１１、１２、２１、２２側にある。車内
側のトラスの頂点付近には機器を取り付けるためのレー
ル１９、２９を一体に設けている。レール１９、２９は
Ｌ状の２つの部材からなる。レールは内装板や椅子等の
機器の取り付け座になる。The hollow frame members 10 and 20 are two face plates 11 and 1, respectively.
2, 21, 22 and a plurality of ribs 13 arranged in a truss shape,
It consists of 23. The two face plates 11, 12 (21, 22) are substantially parallel. The pitch of the truss by the ribs 13 and 23 is the same. The truss has ribs 13 and 23 and face plate 1
It is constituted by the center lines of the plate thicknesses of 1, 12, 21, and 22. The vertices are on the side of the face plates 11, 12, 21, 22. Rails 19 and 29 for mounting devices are integrally provided near the top of the truss inside the vehicle. The rails 19 and 29 are composed of two L-shaped members. The rail serves as a seat for mounting equipment such as interior boards and chairs.

【００２０】車体の外面側に位置する面板１２、２２の
端部は車内側の面板１１、２１の端部よりも隣接する中
空形材２０、１０側に突出している。この突出した面板
を１２ｂ、２２ｂと呼ぶ。面板１２ｂ、２２ｂの端部同
士を突き合わせて摩擦攪拌接合している。突き合わせ部
の隙間が小さくなるように突き合わせている。面板１２
ｂ、２２ｂの板厚は他の部分の面板１２、２２の板厚よ
りも厚い。中空形材１０、２０は面板１２、２２を下方
にしてベッド４０に載っている。面板１１、２１側を上
方にしている。上方から回転工具２５０を接合部に挿入
して摩擦攪拌接合をする。車内側から摩擦攪拌接合する
と言える。面板１２ｂ、２２ｂの端部には車内側（すな
わち面板１１、２１側）に突出する凸部１６、２６があ
る。凸部１６、２６の幅高さは実質的に同一である。The end portions of the face plates 12 and 22 located on the outer surface side of the vehicle body project toward the adjacent hollow shape members 20 and 10 side from the end portions of the face plates 11 and 21 inside the vehicle. The protruding face plates are referred to as 12b and 22b. The end portions of the face plates 12b and 22b are butted against each other and friction stir welding is performed. Butts are made so that the gap between the butted portions is small. Face plate 12
The plate thicknesses of b and 22b are thicker than the plate thicknesses of the face plates 12 and 22 of the other portions. The hollow members 10 and 20 are mounted on the bed 40 with the face plates 12 and 22 facing downward. The face plates 11 and 21 side is upward. The rotary tool 250 is inserted into the joint from above and friction stir welding is performed. It can be said that friction stir welding is performed from the inside of the car. At the end portions of the face plates 12b and 22b, there are convex portions 16 and 26 that project to the inside of the vehicle (that is, the face plates 11 and 21 side). The width heights of the protrusions 16 and 26 are substantially the same.

【００２１】車内側の面板１１の端部と面板２１との端
部との間は接続材３０を介して接合している。接続材３
０の端部はトラスの頂点に設けた座２７（１７）に載っ
ている（重なっている。）。座２７（１７）は重ね面に
なる。図１と同様に傾斜している。座２７（１７）は、
リブ２３Ａ（１３Ａ）とリブ２３Ｂ（１３Ｂ）との交点
にある。座２７（１７）の幅の中央に前記交点がある。
つまり、端部のトラスの頂点は座２７（１７）の幅の中
央部にある。座２７（１７）の幅は接続材３０の凸部３
５の幅と同様である。座２７（１７）は面板２１（１
１）の外面よりも凹んでいる。座２７（１７）は中空形
材の厚さ方向の外側、幅方向の端部側に開口している。
面板２１（１１）の端部２７ｂ（１７ｂ）は接続材３０
とのアーク溶接用の開先として傾斜している。The end portion of the face plate 11 and the end portion of the face plate 21 on the inside of the vehicle are joined via a connecting member 30. Connection material 3
The end of 0 rests (overlaps) on the seat 27 (17) at the top of the truss. The seat 27 (17) becomes a stacking surface. It is inclined like FIG. The seat 27 (17) is
It is located at the intersection of the rib 23A (13A) and the rib 23B (13B). The intersection is at the center of the width of the seat 27 (17).
That is, the apex of the truss at the end is at the center of the width of the seat 27 (17). The width of the seat 27 (17) is the convex portion 3 of the connecting material 30.
It is similar to the width of 5. The seat 27 (17) is attached to the face plate 21 (1
It is recessed from the outer surface of 1). The seat 27 (17) is open to the outside in the thickness direction of the hollow shape member and to the end portion side in the width direction.
The end portion 27b (17b) of the face plate 21 (11) is a connecting member 30.
It is inclined as a groove for arc welding with.

【００２２】接続材３０は面板１１、２１の表面があた
かも連続しているようにすることを目的として配置して
いる。このため、座２７（１７）は面板２１（１１）の
外面に対して面板２１（１１）の板厚だけ凹んでいる。
接続材３０の両端３５を除いた中央は板３１であり、そ
の板厚は面板２１（１１）の板厚と実質的に同一であ
る。The connecting member 30 is arranged for the purpose of making the surfaces of the face plates 11 and 21 continuous. Therefore, the seat 27 (17) is recessed from the outer surface of the face plate 21 (11) by the thickness of the face plate 21 (11).
The center of the connecting member 30 excluding both ends 35 is a plate 31, and the plate thickness thereof is substantially the same as the plate thickness of the face plate 21 (11).

【００２３】接続材３０の両端には上方に突出する凸部
３５がある。凸部の上面にはＶ字状の溝３６がある。溝
３６は凸部３５の幅の中心にある。凸部３５の幅は回転
工具２５０の大径部２５２の径よりも大きい。溝３６は
回転工具２５０を導くための位置検出用の対象物とな
る。レーザセンサで溝３６を検出し、回転工具２５０の
軸心が溝３６に一致するようにしている。溝３６の延長
線上すなわち回転工具２５０の軸心上に、２つのリブ１
３Ａ（２３Ａ）と１３Ｂ（２３Ｂ）の交点がある。At both ends of the connecting member 30, there are convex portions 35 protruding upward. There is a V-shaped groove 36 on the upper surface of the convex portion. The groove 36 is at the center of the width of the convex portion 35. The width of the convex portion 35 is larger than the diameter of the large diameter portion 252 of the rotary tool 250. The groove 36 serves as an object for position detection for guiding the rotary tool 250. The groove 36 is detected by the laser sensor so that the axis of the rotary tool 250 is aligned with the groove 36. On the extension line of the groove 36, that is, on the axis of the rotary tool 250, the two ribs 1
There is an intersection of 3A (23A) and 13B (23B).

【００２４】接続材３０の両端の下面は座２７（１７）
に載る傾斜面になっている。接続材３０と座１７、２７
の重ね面は、平面で起伏がなく、両者は接触している。
接続材３０の幅は二つの中空形材１０、２０の面板１
１、２１の間隔よりも小さい。接続材３０は中空形材１
０、２０と同一材質の押し出し形材である。接続材３０
の長さは中空形材１０、２０の長さと同一である。The lower surfaces of both ends of the connecting member 30 are seats 27 (17).
It has an inclined surface to be mounted on. Connecting material 30 and seats 17, 27
The overlapping surface of is flat and has no undulations, and both are in contact with each other.
The width of the connecting member 30 is the face plate 1 of the two hollow frame members 10 and 20.
It is smaller than the interval of 1 and 21. The connecting member 30 is a hollow frame member 1
It is an extruded shape member made of the same material as 0 and 20. Connection material 30
Is the same as the length of the hollow frame members 10 and 20.

【００２５】面板１１の端部から面板２１の端部までの
距離Ｐ（中空形材１０の端部のトラスの頂点から中空形
材２０の端部のトラスの頂点までの距離）は他の位置の
トラスのピッチＰと同一である。The distance P from the end of the face plate 11 to the end of the face plate 21 (the distance from the apex of the truss at the end of the hollow frame 10 to the apex of the truss at the end of the hollow frame 20) is at another position. It is the same as the pitch P of the truss.

【００２６】中空形材のトラスは、面板１１、１２、２
１、２２側を頂点としたとき、２等辺３角形である。し
かし、中空形材１０、２０の端部のトラスは２等辺３角
形ではない。中空形材１０、２０の端部のトラスを構成
するリブ１３Ａ、２３Ａが鉛直線に対して成す角度はθ
１である。前記端部のトラスを構成するリブ１３Ａ、２
３Ｂが鉛直線に対して成す角度はθ２である。θ１＜θ
２である。The hollow-shaped truss is composed of face plates 11, 12, 2
It is an isosceles triangle when the 1 and 22 sides are the vertices. However, the trusses at the ends of the hollow frame members 10 and 20 are not isosceles triangles. The angle formed by the ribs 13A and 23A forming the truss at the ends of the hollow frame members 10 and 20 with respect to the vertical line is θ.
It is 1. Ribs 13A, 2 which form the truss at the end
The angle formed by 3B with respect to the vertical line is θ2. θ1 <θ
It is 2.

【００２７】このため、リブ１３Ａ（２３Ａ）は面板１
２（２２）の途中に接続している。リブ１３Ａと面板１
２との接続部と、リブ２３Ａと面板２２との接続部との
間には摩擦攪拌接合装置を挿入する空間が生じる。リブ
１３Ａ、２３Ａはリブ１３Ｂ、２３Ａに比べて立ってい
る（θ１が小さい）ので、リブ１３Ａ、２３Ａの板厚は
リブ１３Ｂ、２３Ａの板厚よりも大きい。リブ１３Ｂ、
２３Ｂの板厚は他のリブ１３の板厚よりも大きい。リブ
１３Ａ、１３Ｂ、１３と面板１１、１２、２１、２２と
の接続部は円弧状である。また、接続部の厚さは強度の
観点から定めている。Therefore, the rib 13A (23A) is attached to the face plate 1
It is connected in the middle of 2 (22). Rib 13A and face plate 1
A space for inserting the friction stir welding device is formed between the connecting portion with the rib 2A and the connecting portion with the rib 23A and the face plate 22. Since the ribs 13A and 23A are higher than the ribs 13B and 23A (θ1 is small), the plate thickness of the ribs 13A and 23A is larger than the plate thickness of the ribs 13B and 23A. Rib 13B,
The plate thickness of 23B is larger than the plate thickness of the other ribs 13. The connecting portions between the ribs 13A, 13B, 13 and the face plates 11, 12, 21, 22 are arc-shaped. Further, the thickness of the connection portion is determined from the viewpoint of strength.

【００２８】この構造体の製作方法を説明する。中空形
材１０、２０はベッド２４０に載せられ、固定されてい
る。面板１２ｂ、２２ｂの端部の突き合わせ部は接触し
ているか近接している。面板１２、２２の突き合わせ部
の凸部１６、２６を上方からアーク溶接によって仮止め
する。仮止め溶接は間欠的である。面板１２ｂ、２２ｂ
の突き合わせ部が載るベッド２４０の上面は平らであ
る。面板１２ｂ、２２ｂの突き合わせ部付近、リブ１３
Ａ、２３Ａと面板１２ｂ、２２ｂとの交点付近、リブ１
３Ｂ、２３Ｂと面板１２、２２との交点付近の三者は同
一高さのベッド２４０に載っている。A method of manufacturing this structure will be described. The hollow frame members 10 and 20 are placed and fixed on a bed 240. The abutting portions of the end portions of the face plates 12b and 22b are in contact with or close to each other. The convex portions 16 and 26 of the abutting portions of the face plates 12 and 22 are temporarily fixed from above by arc welding. Temporary fixing welding is intermittent. Face plates 12b, 22b
The upper surface of the bed 240 on which the butting portion of the bed rests is flat. The ribs 13 near the abutting portions of the face plates 12b and 22b
Ribs 1 near the intersections of A, 23A and face plates 12b, 22b
The three members near the intersections of 3B and 23B and the face plates 12 and 22 are mounted on the bed 240 having the same height.

【００２９】この状態において、摩擦攪拌接合装置の回
転工具２５０を上方から凸部１６、２６の突き合わせ部
に挿入した状態で、接合線に沿って移動させ、摩擦攪拌
接合する。回転工具２５０の軸心は鉛直方向（接合部の
法線に沿った方向）である。ただし、回転工具２５０の
進行方向に対しては軸心は公知のように傾斜している。
２つの凸部１６、２６の突き合わせ部を前記センサで検
出して突き合わせ部の隙間の位置を求め、この隙間に回
転工具２５０の軸心を位置させる。In this state, the rotary tool 250 of the friction stir welding apparatus is moved along the welding line while being inserted into the abutting portion of the convex portions 16 and 26 from above, and friction stir welding is performed. The axis of the rotary tool 250 is in the vertical direction (direction along the normal to the joint). However, the axis is inclined with respect to the traveling direction of the rotary tool 250 as is known.
The abutting portion of the two convex portions 16 and 26 is detected by the sensor to find the position of the gap between the abutting portions, and the axis of the rotary tool 250 is positioned in this gap.

【００３０】回転工具２５０の小径部２５１の先端は面
板１２ｂ、２２ｂの下面の近傍に位置している。大径部
２５２の下端は凸部１６、２６の頂と面板１２ｂ、２２
ｂの車内側の面（面板１１、２１側の面）との間に位置
している。大径部２５２の径は２つの凸部１６、２６か
らなる幅よりも小さい。The tip of the small diameter portion 251 of the rotary tool 250 is located near the lower surfaces of the face plates 12b and 22b. The lower end of the large diameter portion 252 has the tops of the convex portions 16 and 26 and the face plates 12b and 22.
It is located between the inner surface of b and the surface on the side of the face plates 11 and 21. The diameter of the large diameter portion 252 is smaller than the width formed by the two convex portions 16 and 26.

【００３１】この摩擦攪拌接合によって、面板１２ｂ、
２２ｂの突き合わせ部の隙間は埋められて、接合され
る。突き合わせ部の外面側（車外側）は平らに接合され
る。面板１２ｂ、２２ｂの外面側には接合線の凹部はな
い。凸部１６、２６の上面は回転工具２５０の大径部２
５２によって凹状になる。凹部の両側には未接合部があ
る。By this friction stir welding, the face plate 12b,
The gap of the abutting portion of 22b is filled and joined. The outer surface side (outside the vehicle) of the butted portion is flatly joined. There is no concave portion of the joining line on the outer surface side of the face plates 12b and 22b. The upper surfaces of the convex portions 16 and 26 are the large diameter portion 2 of the rotary tool 250.
It becomes concave by 52. There are unbonded parts on both sides of the recess.

【００３２】次に、面板１１、２１の座１７、２７に接
続材３０を載せる。接続材３０の端部は座２７の面で接
触している。次に、接続材３０の端部を面板１１、２１
に対してそれぞれアーク溶接によって仮止めする。仮止
め溶接は間欠的である。次に、面板１２ｂ、２２ｂの突
き合わせ部の摩擦攪拌接合に用いた摩擦攪拌接合装置を
用いて接続材３０と座１７、２７との接合を行う。回転
工具２５０を上方から接続材３０と座２７を重ねた部分
に挿入した状態で、接合線に沿って移動させ、摩擦攪拌
接合する。回転工具２５０は、重ね面に１７、２７に対
して、図３の実施例のように傾斜している。Next, the connecting member 30 is placed on the seats 17 and 27 of the face plates 11 and 21. The ends of the connecting members 30 are in contact with each other on the surface of the seat 27. Next, the end portions of the connecting material 30 are attached to the face plates 11 and 21.
Each of them is temporarily fixed by arc welding. Temporary fixing welding is intermittent. Next, the connecting member 30 and the seats 17, 27 are joined using the friction stir welding apparatus used for the friction stir welding of the abutting portions of the face plates 12b, 22b. With the rotary tool 250 inserted from above into the portion where the connecting member 30 and the seat 27 are overlapped, the rotary tool 250 is moved along the joining line to perform friction stir welding. The rotary tool 250 is inclined with respect to the overlapping surfaces 17 and 27 as in the embodiment of FIG.

【００３３】凸部３５の幅は回転工具２５０の大径部２
５２の径よりも大きい。凸部３５の幅の中心に溝３６が
ある。回転工具２５０の回転軸心を溝３６に一致させ
る。このため、回転工具２５０の位置は、接続材３０の
端部に摩擦攪拌接合されない部分を有する内側の位置で
ある。また、回転工具２５０の小径部２５１の先端は座
１７、２７に深く挿入している。これによって、重ね接
合が行われる。大径部２５２の下端は非凸部の接続材３
０の上面と凸部３５の頂との間にある。The width of the convex portion 35 is the large diameter portion 2 of the rotary tool 250.
Larger than the diameter of 52. There is a groove 36 at the center of the width of the convex portion 35. The axis of rotation of the rotary tool 250 is aligned with the groove 36. Therefore, the position of the rotary tool 250 is an inner position having a portion that is not friction stir welded to the end portion of the connecting material 30. Further, the tip of the small diameter portion 251 of the rotary tool 250 is deeply inserted into the seats 17 and 27. As a result, lap joining is performed. The lower end of the large diameter portion 252 has a non-convex connecting member 3
It is between the upper surface of 0 and the top of the convex portion 35.

【００３４】凸部３５の上面は回転工具２５０の大径部
２５２によって凹状になる。凹部の両側には未接合部が
ある。摩擦攪拌接合装置の前記センサは溝３６を検出し
て、溝３６に沿って回転工具２５０を移動させる。この
ため、面板１２ｂ、２２ｂの突き合わせ部を接合する際
の回転工具２５０とセンサとの位置関係をそのまま利用
できる。その他の回転工具と接合部との関係は前記のと
おりである。The upper surface of the convex portion 35 is concaved by the large diameter portion 252 of the rotary tool 250. There are unbonded parts on both sides of the recess. The sensor of the friction stir welding apparatus detects the groove 36 and moves the rotary tool 250 along the groove 36. Therefore, the positional relationship between the rotary tool 250 and the sensor when joining the abutting portions of the face plates 12b and 22b can be used as they are. The relationship between the other rotary tools and the joint is as described above.

【００３５】回転工具２５０の軸心は２つのリブ１３
Ａ、１３Ｂ（２３Ａ、２３Ｂ）によるトラスの頂点また
はその近傍を通る鉛直線上にある。偏芯に対しては、リ
ブ１３Ａ、１３Ｂ（２３Ａ、２３Ｂ）の板厚の増大、リ
ブと面板とを接続する円弧の形状、接続部の厚さ、座１
７、２７の厚さ等によって対応する。接続材３０の接合
は座１７との接合を行い、次に座２７との接合を行う。
２つの回転工具を用いれば、接続材３０の両端の接合を
同時にできる。The axis of the rotary tool 250 has two ribs 13
A, 13B (23A, 23B) is on the vertical line passing through the vertex of the truss or its vicinity. With respect to the eccentricity, the plate thickness of the ribs 13A and 13B (23A and 23B) is increased, the shape of the arc connecting the rib and the face plate, the thickness of the connecting portion, and the seat 1
It corresponds by the thickness of 7, 27 and the like. The connection member 30 is joined to the seat 17 and then to the seat 27.
If two rotary tools are used, both ends of the connecting material 30 can be joined at the same time.

【００３６】これによれば、接続材３０の接合は重ね接
合であり、突き合わせ接合ではない。このため、二つの
中空形材１０、２０の製作公差、二つの中空形材の配置
の間隔の公差により、二つの中空形材１０、２０の隙間
が変わっても接続材３０を接合できるものである。特
に、多数の中空形材を並べて一度の接合する場合は誤差
が大きくなる。この場合、重ね接合であるので、容易に
接合できるものである。According to this, the joining of the connecting members 30 is lap joining, not butt joining. Therefore, the connection member 30 can be joined even if the gap between the two hollow frame members 10 and 20 changes due to the manufacturing tolerance of the two hollow frame members 10 and 20, and the tolerance of the distance between the two hollow frame members. is there. In particular, when a large number of hollow members are arranged and joined at one time, the error becomes large. In this case, since they are lap joints, they can be easily joined.

【００３７】また、中空形材の両面の接合を片面側から
行うことができる。このため、一方の面を接合した構造
体を反転させる必要がない。したがって、安価に、また
高精度に製作できるものである。Further, both sides of the hollow profile can be joined from one side. Therefore, it is not necessary to invert the structure having the one surface joined. Therefore, it can be manufactured at low cost and with high precision.

【００３８】また、面板１２ｂ、２２ｂの接合部の外面
は平らに接合できる。凸部１６、２６、３５は構造体内
や車内側にあり、平滑な面が要求される箇所（外面側、
車外側）にはない。また、車外側には回転工具によって
切削されて生じる凹部もない。このため、凸部の切削等
を不要にでき、車体を安価に製作できるものである。Further, the outer surfaces of the joint portions of the face plates 12b and 22b can be joined flat. The convex portions 16, 26, and 35 are inside the structure or inside the vehicle and are required to have a smooth surface (outer surface side,
Outside the car). Also, there is no recess on the outside of the vehicle that is formed by cutting with a rotary tool. Therefore, it is possible to eliminate the need for cutting the convex portion and the like, and the vehicle body can be manufactured at low cost.

【００３９】また、接続材３０の接合の際の挿入力は、
回転工具２５０の軸心に向けて配置した２つのリブ１３
Ａ、１３Ｂ（２３Ａ、２３Ｂ）によって支えられる。こ
のため、リブ１３Ａ、１３Ｂ（２３Ａ、２３Ｂ）の曲が
りを抑制できる。１３Ａ、１３Ｂ（２３Ａ、２３Ｂ）の
板厚を薄くでき、軽量にできるものである。もちろん面
板１１、２１、３０の曲がりも抑制できる。リブ１３
Ａ、１３Ｂ（２３Ａ、２３Ｂ）を支えるベッド２４０は
同一高さにあるので、面板１２、２２の曲がりも防止で
きる。Further, the insertion force at the time of joining the connecting material 30 is
Two ribs 13 arranged toward the axis of the rotary tool 250
It is supported by A and 13B (23A and 23B). Therefore, bending of the ribs 13A and 13B (23A and 23B) can be suppressed. The plate thickness of 13A, 13B (23A, 23B) can be made thin and can be made light. Of course, the bending of the face plates 11, 21, 30 can also be suppressed. Rib 13
Since the beds 240 supporting A and 13B (23A and 23B) are at the same height, it is possible to prevent the face plates 12 and 22 from bending.

【００４０】また、接合後、構造体として用いる場合を
考えると、実質的にすべてをトラス構造で構成したこと
になる。中空形材１０、２０の接合部もトラス構造であ
る。このため、面外曲げ剛性が向上し、軽量にできるも
のである。なお、接続材３０、リブ１３Ａ、２３Ａの間
の面板１２ｂ、２２ｂ、リブ１３Ａ、２３Ａは実質的に
トラスを構成するので、この部分が特に弱いことはな
い。ただし、板厚は検討すべきである。Considering the case of using as a structure after joining, it means that substantially all of them are constituted by a truss structure. The joint between the hollow frame members 10 and 20 also has a truss structure. Therefore, the out-of-plane bending rigidity is improved and the weight can be reduced. Since the connecting members 30, the face plates 12b and 22b between the ribs 13A and 23A, and the ribs 13A and 23A substantially form a truss, this portion is not particularly weak. However, the plate thickness should be considered.

【００４１】また、リブ１３Ａ、２３Ａの傾斜角θ１を
リブ１３Ｂ、２３Ｂの傾斜角θ２よりも大きくすること
ができる。これによれば、接続材３０の幅が大きくな
り、その板厚を厚くする必要が生じ、重量が大きくな
る。しかし、摩擦攪拌接合装置の挿入の為に大きな開口
が必要な場合に利用できる。リブの傾斜角θ１、θ２を
同一にして、２等辺３角形にすることができる。これに
よればリブ１３Ａ、１３Ｂ（２３Ａ、２３Ｂ）の板厚を
同一にできる。また、リブ１３Ａ、２３Ａの板厚を図５
の場合よりも薄くできよう。ただし、この２等辺３角形
のトラスの大きさを他の個所のトラスの大きさと同一に
すれば、接続材３０の幅は大きくなる。Further, the inclination angle θ1 of the ribs 13A and 23A can be made larger than the inclination angle θ2 of the ribs 13B and 23B. According to this, the width of the connecting member 30 becomes large, it becomes necessary to increase the plate thickness, and the weight becomes large. However, it can be used when a large opening is required for inserting the friction stir welding device. The ribs may have the same inclination angles θ1 and θ2 to form an isosceles triangle. This allows the ribs 13A and 13B (23A and 23B) to have the same plate thickness. In addition, the thickness of the ribs 13A and 23A is shown in FIG.
It could be thinner than the case. However, if the size of the isosceles triangle truss is the same as the size of the truss at other places, the width of the connecting member 30 becomes large.

【００４２】しかし、２つのリブ１３Ａ、１３Ｂ（２３
Ａ、２３Ｂ）の傾斜角θ１、θ２を図５の傾斜角θ１と
すれば、端部のトラスを小さい２等辺３角形にすること
ができる。この端部のトラスの底辺の大きさは他の個所
のトラスの底辺の大きさよりも小さい。これによれば、
リブ１３Ｂ（２３Ｂ）と面板１２（２２）との交点から
中空形材１０（２０）の端部までの距離を小さくでき
る。したがって、接続材３０の幅を図５の接続材３０の
幅と同様にできる。However, the two ribs 13A and 13B (23
If the inclination angles θ1 and θ2 of (A, 23B) are the inclination angles θ1 in FIG. 5, the truss at the end can be made into a small isosceles triangle. The size of the base of the truss at this end is smaller than the size of the base of the trusses at other locations. According to this
The distance from the intersection of the rib 13B (23B) and the face plate 12 (22) to the end of the hollow frame member 10 (20) can be reduced. Therefore, the width of the connecting material 30 can be made similar to the width of the connecting material 30 of FIG.

【００４３】接続材３０の部分を含めて全てのトラスの
ピッチは同一である。端部のトラスを除き、トラスの大
きさは同一である。このため、中空形材の設計を標準化
できる。２つのリブ１３Ａ、１３Ｂ（２３Ａ、２３Ｂ）
による頂点は面板２１、３１よりも外面側にあってもよ
い。また、２つのリブ１３Ａ、１３Ｂ（２３Ａ、２３
Ｂ）が成す角度の中間に向けた角度で回転工具２５０を
挿入してもよい。この場合の軸心はトラスの頂点に向け
る。The pitch of all the trusses, including the connecting material 30, is the same. The size of the truss is the same except for the truss at the end. Therefore, the design of the hollow frame can be standardized. Two ribs 13A, 13B (23A, 23B)
The apex may be on the outer surface side of the face plates 21 and 31. In addition, the two ribs 13A and 13B (23A and 23B
The rotary tool 250 may be inserted at an angle toward the middle of the angle formed by B). The axis in this case should be directed to the top of the truss.

【００４４】上記実施例では接続材３０の接合は摩擦攪
拌接合で行っているが、アーク溶接との併用で行っても
よい。上記摩擦攪拌接合は重ね接合であるので、突き合
わせ接合に比べて、接合強度が弱い。このため、接続材
３０の端部と面板２１、３１との突き合わせ部をアーク
溶接する。アーク溶接の箇所は例えば強度が弱い領域で
ある。また、アーク溶接を補修用として使用することが
できる。In the above embodiment, the joining material 30 is joined by friction stir welding, but it may be joined together with arc welding. Since the friction stir welding is lap welding, the welding strength is weaker than that of butt welding. For this reason, the abutting portions of the end portions of the connecting material 30 and the face plates 21, 31 are arc-welded. The location of arc welding is, for example, a region where the strength is weak. Also, arc welding can be used for repair.

【００４５】上記実施例では接続材３０の両端を摩擦攪
拌接合で接合しているが、一端を摩擦攪拌接合、他端を
アーク溶接で接合するようにしてもよい。アーク溶接の
方が歪みが大きいので、先に摩擦攪拌接合を行う。Although both ends of the connecting member 30 are joined by friction stir welding in the above embodiment, one end may be joined by friction stir welding and the other end may be joined by arc welding. Since arc welding has larger distortion, friction stir welding is performed first.

【００４６】上記実施例は面板１１、１２、２１、２２
が平行であったが、一方の面板が他方の面板に対して傾
斜している場合にも対応できるものである。リブ１３
Ａ、１３Ｂ（２３Ａ、２３Ｂ）の板厚において、面板１
１、２１側の板厚を面板１２、２２側よりも厚くする。
面板１１、２１側を厚くするのは、接合時に高温になり
やすいからである。In the above embodiment, the face plates 11, 12, 21, 22 are used.
Are parallel to each other, but can also be applied to the case where one face plate is inclined with respect to the other face plate. Rib 13
A, 13B (23A, 23B) plate thickness, face plate 1
The plate thickness on the side of 1 and 21 is made thicker than that on the side of face plates 12 and 22.
The reason why the face plates 11 and 21 are thickened is that the temperature tends to be high during joining.

【００４７】上記実施例では接合部の面板が水平であっ
たが、接合部の面板の法線が傾斜していても同様に接合
できる。これは側構体２０１の端部の接合線に生じ易
い。この場合の回転体の軸心は面板の法線に沿ってい
る。In the above-mentioned embodiment, the face plate of the joint portion is horizontal, but the face plate of the joint portion can be similarly joined even if the normal line is inclined. This is likely to occur at the joining line at the end of the side structure 201. In this case, the axis of the rotating body is along the normal to the face plate.

【００４８】図９の実施例を説明する。中空形材１０Ｃ
の端部のリブ１３Ｃは面板１１Ｃ、１２Ｃに直交してい
る（面板の法線に沿っている。）。面板１１Ｃとリブ１
３Ｃとの接続部には前記と同様な凹部の座１７Ｃがあ
る。１７Ｃｂは座１７Ｃに接続した突出片で、接続材１
３０が載る。リブ１３Ｃの板厚の範囲内に回転工具２５
０の回転軸心、溝３６がある。このものでは摩擦攪拌接
合時の挿入力をリブで支える。突出片１７Ｃｂを含めた
座１７Ｃの幅の中央部にリブ１３Ｃの板厚の中心があ
る。突出片１７Ｃｂを含めた座１７Ｃの幅は凸部３５の
幅と同様である。他方の中空形材の端部のリブもこのよ
うにできる。The embodiment shown in FIG. 9 will be described. Hollow profile 10C
The rib 13C at the end of is orthogonal to the face plates 11C and 12C (along the normal to the face plate). Face plate 11C and rib 1
At the connecting portion with 3C, there is a recess seat 17C similar to the above. 17Cb is a protruding piece connected to the seat 17C, and is a connecting member 1
30 is listed. Rotating tool 25 within the plate thickness range of rib 13C
There is a 0 axis of rotation and a groove 36. With this type, ribs support the insertion force during friction stir welding. The center of the plate thickness of the rib 13C is at the center of the width of the seat 17C including the protruding piece 17Cb. The width of the seat 17C including the protruding piece 17Cb is similar to the width of the convex portion 35. The ribs at the ends of the other hollow profile can also be made in this way.

【００４９】図５、図９の実施例において、図３の実施
例のように、重ね面を水平とし、回転工具２５０の回転
軸心を傾斜させることができる。接続材３０、１３０の
両端に傾斜した凸部を設ける。接続材３０、１３０と中
空形材１０、１０Ｃ、２０との接続部は面板１１、１１
Ｃ、２１に対して凹んだ座１７、１７Ｃ、２７に重ねて
いるが、面板１１、１１、２１に重ねてもよい。In the embodiment shown in FIGS. 5 and 9, as in the embodiment shown in FIG. 3, the overlapping surface can be horizontal and the rotation axis of the rotary tool 250 can be inclined. Inclined convex portions are provided at both ends of the connecting members 30 and 130. The connecting portions between the connecting members 30, 130 and the hollow shape members 10, 10C, 20 are face plates 11, 11
Although it is stacked on the seats 17, 17C, 27 which are recessed with respect to C, 21, it may be stacked on the face plates 11, 11, 21.

【００５０】本発明の技術的範囲は、特許請求の範囲の
各請求項に記載の文言あるいは課題を解決するための手
段の項に記載の文言に限定されず、当業者がそれから容
易に置き換えられる範囲にも及ぶものである。The technical scope of the present invention is not limited to the wording described in each claim of the claims or the wording described in the section of means for solving a problem, and a person skilled in the art can easily replace it. It extends to a range.

【００５１】[0051]

【発明の効果】本発明によれば、重ね部の摩擦攪拌接合
において高強度の接合が得られる中空形材を提供できる
ものである。EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a hollow shape member capable of achieving high-strength welding in friction stir welding of overlapping portions.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例の接合部の縦断面図。FIG. 1 is a vertical cross-sectional view of a joint portion according to an embodiment of the present invention.

【図２】図１の接合後の縦断面図。FIG. 2 is a vertical cross-sectional view after joining in FIG.

【図３】本発明の他の実施例の接合部の縦断面図。FIG. 3 is a vertical cross-sectional view of a joint portion according to another embodiment of the present invention.

【図４】図３の接合後の縦断面図。FIG. 4 is a vertical cross-sectional view after joining in FIG.

【図５】本発明の一実施例の接合部の要部の縦断面図。FIG. 5 is a vertical cross-sectional view of a main portion of a joint portion according to an embodiment of the present invention.

【図６】本発明の一実施例の接合部の縦断面図。FIG. 6 is a vertical sectional view of a joint portion according to an embodiment of the present invention.

【図７】本発明の一実施例の一組の中空形材の縦断面
図。FIG. 7 is a vertical sectional view of a pair of hollow members according to an embodiment of the present invention.

【図８】鉄道車両の車体の斜視図。FIG. 8 is a perspective view of a vehicle body of a railway vehicle.

【図９】本発明の他の実施例の要部の縦断面図。FIG. 9 is a vertical cross-sectional view of the essential parts of another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１０、１０Ｃ、２０ 中空形材 １１、１１Ｃ、１２、１１ｂ、１２Ｃ、２１、２２、２
２ｂ 面板 １３、１３Ａ、１３Ｂ、１３Ｃ、２３、２３Ａ、２３Ｂ
リブ １７、１７Ｃ、２７ 座 ３０ 接続材 ２０１ 側構体 ２０２ 屋根構体 ２０３ 台枠 ２４０ ベッド ２５０ 回転工具 ３１０、３２０、３３０、３４０ 部材 ３１０ｂ、３２０ｂ 傾斜面10, 10C, 20 Hollow frame members 11, 11C, 12, 11b, 12C, 21, 22, 2
2b Face plate 13, 13A, 13B, 13C, 23, 23A, 23B
Ribs 17, 17C, 27 Seat 30 Connecting material 201 Side structure 202 Roof structure 203 Underframe 240 Bed 250 Rotating tools 310, 320, 330, 340 Members 310b, 320b Sloping surface

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平10−328855（ＪＰ，Ａ) 特開 平11−90654（ＪＰ，Ａ) 特開 平９−309164（ＪＰ，Ａ) 特開 平10−230320（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 20/12 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 10-328855 (JP, A) JP 11-90654 (JP, A) JP 9-309164 (JP, A) JP 10- 230320 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) B23K 20/12

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 板の両端において、それぞれ板の厚さ方
向に突出する凸部があり、 前記凸部の反対側の面は相手の部材に重ねる面であっ
て、前記板の幅方向に沿っており、 前記重ねる面は前記板の幅方向に対して傾斜しており、 前記凸部の上面は、摩擦攪拌接合用の回転工具の軸心に
直交しており、 前記両端は前記板の厚さ方向に重ね摩擦攪拌接合する部
分であること、 を特徴とする摩擦攪拌接合用押し出し形材。1. The thickness of the plate at each end of the plate
There is a convex part projecting in the opposite direction, and the surface on the opposite side of the convex part is the surface that overlaps with the mating member.
Then, along the width direction of the plate, the overlapping surface is inclined with respect to the width direction of the plate, the upper surface of the convex portion to the axial center of the rotary tool for friction stir welding
An extruded frame member for friction stir welding , which is orthogonal to each other, and the both ends are portions to be friction stir welded in the thickness direction of the plate. 【請求項２】 二枚の面板の間を複数のリブで接続して
おり、 一方の面板の端部は中空形材の端部の前記リブの近傍に
あり、 前記端部の前記リブは、重ね摩擦攪拌接合の際の回転工
具の挿入力を支える厚さであり、 他方の面板の端部は前記一方の面板の端部よりも突出し
ており、 前記一方の面板の端部と前記中空形材の端部の前記リブ
との接続部の前記一方の面板側は、前記端部に向けて傾
斜しており、 前記傾斜した部分は 重ね摩擦攪拌接合する部分であるこ
と、 を特徴とする摩擦攪拌接合用押し出し形材。2. A plurality of ribs are used to connect between the two face plates.
Cage, in the vicinity of the rib of the end of one of the face plate end of the hollow shape member
There, the rib of said end portion is rotated Engineering during lap Friction stir welding
The thickness that supports the insertion force of the tool, and the end of the other face plate projects more than the end of the one face plate.
And the ribs at the end of the one face plate and the end of the hollow shape member.
The one face plate side of the connection part with is inclined toward the end part.
And obliquely, the inclined portion is superposed friction stir welding to be part, the friction stir welding extruded shape members, wherein.
JP25973999A 1999-09-14 1999-09-14 Extruded material for friction stir welding Expired - Fee Related JP3488402B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25973999A JP3488402B2 (en) 1999-09-14 1999-09-14 Extruded material for friction stir welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25973999A JP3488402B2 (en) 1999-09-14 1999-09-14 Extruded material for friction stir welding

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Publication Number Publication Date
JP2001081903A JP2001081903A (en) 2001-03-27
JP3488402B2 true JP3488402B2 (en) 2004-01-19

Family

ID=17338286

Family Applications (1)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101372067B (en) * 2007-08-22 2012-06-20 大韩烧结金属株式会社 Method for friction jointing heterogeneity materials

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4134837B2 (en) * 2003-07-15 2008-08-20 マツダ株式会社 Friction welding method and friction welding structure
JP4516976B2 (en) * 2007-04-26 2010-08-04 日本車輌製造株式会社 Double skin panel joint
JP5965758B2 (en) * 2012-07-13 2016-08-10 シロキ工業株式会社 Aluminum door manufacturing method
US9457542B2 (en) 2014-01-10 2016-10-04 Shiroki Corporation Joined body of dissimilar aluminum alloy materials, and vehicle door

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101372067B (en) * 2007-08-22 2012-06-20 大韩烧结金属株式会社 Method for friction jointing heterogeneity materials

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