CN101883657B - Joining method - Google Patents

Abstract

A joining method for easily joining butted portions of a pair of metal members together, with improved air-tightness and water-tightness maintained at the joined portion. The joining method joins together butted portions (J8) of a structure (metal members (N) to be joined together) formed by butting against each other a flat plate (14) and a rectangular member (R4) which are the metal members. In the joining method, a friction stir welding step is performed, in which a friction stir welding is applied to the butted portions (J8) from the outer surface (A) side of the structure, and after that a welding step is performed, in which welding is applied to the butted portions (J8) from the inner surface (B) side of the structure.

Description

Joint method

Technical field

The present invention relates to a kind of joint method that utilizes the hardware of friction stirring.

Background technology

In jointing metal member method each other, known have friction to stir joint (FSW-Friction StirWelding).It is by making the throw rotation that friction stir to engage, and moves along hardware docking section each other, utilizes the frictional heat of throw and hardware to make the plastic deformation of docking section mobile, thereby makes hardware solidstate bonding each other.And throw is generally to be equipped with the throw that stirs pin (probe) in the lower surface of cylindrical shoulder.

For example, as shown in Figure 35 a, in the situation that pair of metal member 101,101 end face are docked and the docking section J that the forms stirring that rubs each other, at the dorsal part configuration back of the body fitting 102 of docking section J, use throw G along the docking section J stirring that rubs.This technology for example is recorded in patent documentation 1, patent documentation 2.

Patent documentation 1; Japanese Patent Laid-Open 2001-225179 communique

Patent documentation 2; Japanese Patent Laid-Open 2005-131666 communique

Summary of the invention

Invent technical problem to be solved

Yet, there is following problem in joint method in the past, as shown in Figure 35 b, because hardware 101,101 can shrink at the junction surface, the hardware 101 after joint is out-of-level crooked each other, quality of products.In addition, also have following problem, for example when not shown connecting elements was inserted the slot part 103 that is formed between hardware 101,101, because the bottom of slot part 103 is uneven, connecting elements can't configure accurately.In addition, due to hardware 101,101 contraction, may form breach (kissing bond) E at the dorsal part of plastification zone W.By this, the hot strength at junction surface reduces, and can cause watertightness and bubble-tight reduction.

In addition, similarly, also there is following problem, as shown in Figure 35 c, dock with the end face of hardware 105 and when vertically engaging the side that makes hardware 105, and for docking section J, stirring rubs from hardware 105,105 the outside, due to hardware 105,105 contraction, can make hardware on one side 105 upsets.In addition, also there is the problem that forms breach E in the bight (inner corner portion) of the inboard at hardware 105,105 junction surface.

At this, if for example rub stirring from hardware 101,101 dorsal part or hardware 105,105 inboard, can solve relevant issues.But, for example in the situation that rub from the inboard of tubular tectosome and stir and rub as shown in Figure 35 c and stir inner corner portion, also there is following problem, the mode that difficult hardware according to engaging docks each other, cooperation etc. by the friction agitating device is moved throw suitably.

From this viewpoint, technical problem of the present invention is to provide a kind of joint method, and this joint method can make pair of metal member docking section each other easily engage, and can improve air-tightness and watertightness.

The technical scheme of dealing with problems and adopting

For addressing the above problem, joint method of the present invention is to make the pair of metal member dock each other the joint method that forms the docking section, it is characterized in that, after the friction agitating procedure that stirs that carries out above-mentioned docking section is rubbed from the one side side, carry out the welding sequence that above-mentioned docking section is welded from the another side side.

According to this joint method, after stirring owing to rubbing from pair of metal member one side side each other, also weld from the another side side, therefore, even if suppose that defectiveness forms, and also can use the weld metal seal defect, thereby can improve watertightness and air-tightness.In addition, due to the problems such as cooperation of welding the energy solving device, therefore can be than being easier to engage operation.

In addition, joint method of the present invention is in the barrel-shaped structure body that forms in a plurality of hardware docking, make above-mentioned hardware dock each other the joint method that forms the docking section, it is characterized in that, after the friction agitating procedure that stirs that carries out above-mentioned docking section is rubbed from the outer surface side of above-mentioned tectosome, carry out the welding sequence that above-mentioned docking section is welded from the inner surface side of above-mentioned tectosome.

According to this joint method, after stirring owing to rubbing in the outside from tectosome, also weld from the inboard of tectosome, therefore, even suppose to form defective at the inner surface of tectosome, also can seal with weld metal, can improve watertightness and air-tightness.In addition, by welding, even the tectosome that is surrounded by hardware also can engage operation with comparalive ease from the inboard of tectosome.

In addition, as preferably, the plastification zone that forms in above-mentioned friction agitating procedure is contacted with the weld metal that forms in above-mentioned welding sequence.According to this joint method, because the total length of docking section depth direction is sealed, therefore can further improve watertightness and the air-tightness at junction surface.

In addition, as preferably, in above-mentioned welding sequence, comprise the weld metal filling work procedure that weld metal is filled in the recess that forms along the docking section that comes across above-mentioned another side.In addition, as preferably, in above-mentioned welding sequence, comprise weld metal is filled in along the docking section of the inner surface that comes across above-mentioned tectosome and the weld metal filling work procedure of the recess that forms.According to this joint method, can improve the workability of welding.

In addition, as preferably, in above-mentioned friction agitating procedure, be included in and utilize before large-scale throw formally engages operation, utilize small-sized throw to carry out the interim interim joint operation that engages.According to this joint method, can prevent from producing perforate in the docking section when formally engaging.

In addition, as preferably, in above-mentioned friction agitating procedure, comprising: in the outstanding material arrangement step of a pair of outstanding material of the both sides of above-mentioned docking section configuration; And the outstanding material that stirs that rubs along above-mentioned outstanding material and the docking section of above-mentioned hardware engages operation temporarily.According to this joint method, by using outstanding material, can easily set insertion position, the disengaging configuration of throw.

In addition, as preferably, in above-mentioned friction agitating procedure, the guide hole that the predetermined insertion position of the throw that being included in rubs stirs forms guide hole forms operation.Engage operation according to this, can reduce the resistance of pressing in when throw is pressed into.By this, can improve friction and stir the precision that engages, and can promptly engage operation.

In addition, joint method of the present invention is to make the pair of metal member dock each other the joint method that forms the docking section, it is characterized in that, carrying out above-mentioned docking section after the welding sequence that the another side side is welded, carry out the friction agitating procedure that above-mentioned docking section is rubbed and stirs from the one side side.

According to this joint method, before rubbing agitating procedure from the one side side, weld from the another side side, by this, stirring can rub under the interim state that engages of another side side.Like this, owing to preventing that fecund is born in the generation of defective of the back side (another side) side of the face that stirs of rubbing, can improve watertightness and the air-tightness of the hardware of bonding part.In addition, due to by welding from the another side side, therefore the problems such as cooperation that can solving device can engage operation with comparalive ease.In addition, due in the friction agitating procedure, therefore the stirring that can rub under the state that the pair of metal member engages each other temporarily can improve workability.

In addition, according to joint method of the present invention, in the tectosome of the tubular that forms in a plurality of hardware docking, above-mentioned hardware is docked each other form the docking section, it is characterized in that, carrying out above-mentioned docking section after the welding sequence that the inner surface side of above-mentioned tectosome is welded, carrying out the friction agitating procedure that above-mentioned docking section is rubbed and stirs from the outer surface side of above-mentioned tectosome.

According to this joint method, before stirring owing to rubbing in the outer surface side from tectosome, weld from the inner surface side of tectosome, therefore, stirring can rub under the interim state that engages of inner surface side.By this, can prevent that fecund is born in the generation of defective of the back side (inner surface of the tectosome) side of the face that stirs of rubbing, thereby can improve watertightness and the air-tightness of the hardware of bonding part.In addition, owing to welding by the inner surface side from tectosome, the problems such as cooperation of the device in the time of solving junction structure inside can engage operation with comparalive ease.In addition, due in the friction agitating procedure, therefore the stirring that can rub under the state that the pair of metal member engages each other temporarily can improve workability.

The invention effect

According to joint method of the present invention, can easily engage pair of metal member docking section each other, and can improve air-tightness and watertightness.

Description of drawings

Fig. 1 means the stereogram of the tectosome of the first embodiment.

Fig. 2 means the top view of the tectosome of the first embodiment.

Fig. 3 means the figure of the intermediate member of the first embodiment, and Fig. 3 a is exploded perspective view, and Fig. 3 b is top view.

Fig. 4 means the stereogram of the docking operation of the first embodiment.

Fig. 5 a means the stereogram after the docking operation of the first embodiment, and Fig. 5 b means that the slot part of the first embodiment forms the stereogram of operation.

Fig. 6 means the stereogram of the outstanding material arrangement step of the first embodiment.

Fig. 7 a means the side view of small rotary instrument, and Fig. 7 b means the side view of large-scale throw.

Fig. 8 means the top view of the interim joint operation of the first embodiment.

Fig. 9 means the top view of the formal joint operation of the first embodiment.

Figure 10 is the I-I line cutaway view of Fig. 9.

Figure 11 means the side view of the welding sequence of the first embodiment.

Figure 12 means that the connecting elements of the first embodiment inserts the stereogram of operation.

Figure 13 means the stereogram of the outstanding material arrangement step of the first embodiment.

Figure 14 means that the outside of the first embodiment engages the top view of operation temporarily.

Figure 15 means that the outside of the first embodiment formally engages the figure of operation, and Figure 15 a is top view, and Figure 15 b is the II-II line cutaway view of Figure 15 a.

Figure 16 a means that the recess of the second embodiment forms the side view of operation, and Figure 16 b means the side view of the weld metal filling work procedure of the second embodiment.

Figure 17 a observes the stereogram of the tectosome of the 3rd embodiment from the outside, Figure 17 b observes the stereogram of the tectosome of the 3rd embodiment from the inboard.

Figure 18 means the exploded perspective view of the tectosome of the 4th embodiment.

Figure 19 a means the stereogram of the friction agitating procedure of the 4th embodiment, and Figure 19 b means the part perspective elevation of the welding sequence of the 4th embodiment.

Figure 20 means the front view of the docking operation of the 5th embodiment.

Figure 21 means the stereogram of the welding sequence of the 5th embodiment.

Figure 22 means the stereogram of preparatory stage of the friction agitating procedure of the 5th embodiment.

Figure 23 a is the amplification stereogram of the part of Figure 22, and Figure 23 b means that slot part forms the stereogram of operation.

Figure 24 means the stereogram of the outstanding material arrangement step of the 5th embodiment.

Figure 25 means the top view of the interim joint operation of the 5th embodiment.

Figure 26 means the top view of the formal joint operation of the 5th embodiment.

Figure 27 is the I-I line cutaway view of Figure 26.

Figure 28 means the figure of the welding sequence of the 6th embodiment, and Figure 28 a means that recess forms the figure of operation, and Figure 28 b means the figure of weld metal filling work procedure.

Figure 29 a means the stereogram of the docking operation of the 7th embodiment, and Figure 29 b means the stereogram of the welding sequence of the 7th embodiment.

Figure 30 a means the stereogram of the outstanding material arrangement step of the 7th embodiment, and Figure 30 b means the stereogram of the friction agitating procedure of the 7th embodiment.

Figure 31 a is the exploded view that is engaged hardware of the 8th embodiment, and Figure 31 b means the figure of the docking operation of the 8th embodiment, and Figure 31 c means the welding sequence of the 8th embodiment and the figure of friction agitating procedure.

Figure 32 means the stereogram of the tectosome of the 8th embodiment.

Figure 33 is the exploded perspective view that is engaged hardware of the 9th embodiment.

Figure 34 a means the stereogram of the welding sequence of the 9th embodiment, and Figure 34 b means the stereogram of the friction agitating procedure of the 9th embodiment.

Figure 35 means the cutaway view of joint method in the past.

(symbol description)

1 tectosome

11～14 flat boards

31 outstanding materials

32 outstanding materials

F small rotary instrument

The large-scale throw of G

H1～H4 wall member

The J docking section

The M1 recess

P1 guide hole (thread Pilot hole)

R1～R4 corner member

The T weld metal

W plastification zone

The specific embodiment

[the first embodiment]

For joint method of the present invention, explain with reference to accompanying drawing.As shown in Figure 1, joint method of the present invention explains as an example of the tectosome 1 that produces the tubular that is surrounded by four wall members H1, H2, H3, H4 example.And in explanation, take the hollow bulb side of tectosome 1 as inboard, opposition side is the outside.In addition, the face that forms the inboard of tectosome 1 is inner surface, and the face that forms the outside is outer surface.

As shown in Figures 1 and 2, the tectosome 1 of present embodiment is that inside has the roughly cylindrical body of rectangular hollow bulb of cross section.Tectosome 1 consists of by consisting of four jiaos of tectosome 1 and overlooking corner member R1, R2, R3, the R4 that direction roughly is L word shape and be located at respectively flat board 11,12,13 between corner member R1, R2, R3, R4,14, and the side end face of each member is engaged with each other.Corner member R1～R4 and dull and stereotyped 11～14 is made by the metal material that stirs that can rub, as aluminium, aluminium alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy etc.

Wall member H1 is made of corner member R1, the R4 of configured separate and 11 of flat boards that are disposed between corner member R1, R4.Wall member H2 is made of 12 of flat boards that are disposed between corner member R1, R2.Wall member H3 is made of corner member R2, the R3 of configured separate and 13 of flat boards that are disposed between corner member R2, R3.Wall member H4 is made of the flat board 14 and connecting elements U, the U that are disposed between corner member R3, R4.

From the outside (outer surface) of wall member H1 and the docking section J2 of the opposite side end face of the docking section J1 of the side end face of inboard (inner surface) diagonal member R4 and dull and stereotyped 11 opposite side end face and corner member R1 and a side end face of dull and stereotyped 11 stirrings that rub, overlapping by the front in formed each plastification of friction stirring zone.And the plastification zone comprises by the frictional heat heating of throw described later and presents the state of plastification and engage with throw by getting back to the state two states of normal temperature.

In addition, similarly, from the docking section J6 of the opposite side end face of the docking section J5 of the side end face of the opposite side end face of the docking section J3 of the side end face of the outer surface side of each wall member and inner surface side diagonal member R1 and dull and stereotyped 12 opposite side end face and corner member R2 and docking section J4, the corner member R2 of a side end face of dull and stereotyped 12 and dull and stereotyped 13 opposite side end face and corner member R3 and a side end face of dull and stereotyped 13 stirrings that rub, overlapping by the front in formed each plastification of friction stirring zone.

On the other hand, the docking section J7 of the opposite side end face of the side end face of corner member R3 and flat board 14 and the opposite side end face of corner member R4 with the feature of the docking section J8 of a side end face of flat board 14 are, after the welding of the inner surface side of wall member H4, from the stirring that rubs of outer surface side.

Below, the joint method of present embodiment is described in detail.Stir and engages roughly the samely because the cross section that is made of wall member H1, H2, H3 is the intermediate member of U word shape and in the past friction, so explain simply.

The joint method of present embodiment comprises that mainly (1) intermediate member joint operation, (2) docking operation, (3) slot part form the interim formally joint operation of operation, (8) outside that engages outside operation, (4) friction agitating procedure, (5) welding sequence, (6) connecting elements insertion operation, (7).

(1) intermediate member engages operation

Intermediate member joint operation is that the intermediate of formation tectosome 1 is the operation of intermediate member 20 (with reference to Fig. 3 b).Intermediate member 20 be from tectosome 1 only with dull and stereotyped 14 members that unload, the cross section roughly is U word shape.Intermediate member 20 have in opposite directions wall member H1, the wall member H3 of configuration and be located at wall member H1 and wall member H3 between flat board 12 (wall member H2).Engage in operation at intermediate member, after forming respectively wall member H1, wall member H3, flat board 12 is engaged with wall member H1 and wall member H3.

From the side end face of the inner surface side of wall member H1 and the outer surface side diagonal member R4 docking section J1 with dull and stereotyped 11 opposite side end face, the length direction that spreads all over docking section J1 rubs endlong and stirs and engage.In addition, be formed at the front (dull and stereotyped 11 thickness direction central portions) of plastification zone W1, the W1 of docking section J1 overlapping.By this, due to the stirring that can all rub to the gap of the depth direction of docking section J1, therefore can improve air-tightness and watertightness.Similarly, from the opposite side end face of inner surface side and outer surface side diagonal member R1 and the docking section J2 of a side end face of flat board 11, the stirring that rubs endlong that spreads all over docking section J2 makes the front of plastification regional W2, W2 overlapping.

From the side end face of the inner surface side of wall member H3 and the outer surface side diagonal member R2 docking section J5 with dull and stereotyped 13 opposite side end face, spread all over docking section J5 length direction and rub endlong and stir and engage.In addition, be formed at the front (dull and stereotyped 13 thickness direction central portions) of plastification zone W5, the W5 of docking section J5 overlapping.By this, due to the stirring that can all rub to the gap of the depth direction of docking section J5, therefore can improve air-tightness and watertightness.Similarly, from the opposite side end face of outer surface side and the inner surface side diagonal member R3 docking section J6 with a side end face of dull and stereotyped 13, spread all over stirrings that rub endlong of docking section J6 length direction, make the front of plastification regional W6, W6 overlapping.

As shown in Fig. 3 a and Fig. 3 b, dull and stereotyped 12 are located between corner member R1 and corner member R2.Inner surface side from dull and stereotyped 12 and outer surface side be to dull and stereotyped 12 the opposite side end face docking section J3 with the side end face of corner member R1, rub endlong stirring and engaging of the length direction that spreads all over docking section J3.The front (dull and stereotyped 12 thickness direction central portions) that is formed at plastification zone W3, the W3 of docking section J3 is overlapping.By this, due to the stirring that can all rub to the gap of the depth direction of docking section J3, therefore can improve air-tightness and watertightness.Similarly, the docking section J4 of the inner surface side from dull and stereotyped 12 and the opposite side end face of outer surface side diagonal member R2 and a side end face of dull and stereotyped 12, the length direction that spreads all over docking section J4 stirrings that rub endlong makes the front of plastification regional W4, W4 overlapping.

As shown in Fig. 3 b, be formed with the peristomes 21 of dull and stereotyped 14 insertions of confession in the part of intermediate member 20.And, in the present embodiment, although from outer surface side and inner surface side to the stirring that rubs of each docking section of middle member 20, be not limited thereto.For example, also can any side weld from the outer surface side of middle member 20 and inner surface side, from the opposite side stirring that rubs.

(2) docking operation

As shown in Figure 4, in the docking operation, with the peristome 21 (with reference to Fig. 3 b) of dull and stereotyped 14 insertion intermediate members 20.Dull and stereotyped 14 width and the width of peristome 21 are roughly the same.That is, when dull and stereotyped 14 inserted peristome 21, a pair of side end face R3b, the R4a that come across peristome 21 docked with both sides end face 14a, the 14b of flat board 14.As shown in Figure 4, dull and stereotyped 14 opposite side end face 14a docks with the side end face R3b of corner member R3 and forms docking section J7.On the other hand, a side end face 14b of dull and stereotyped 14 docks with the opposite side end face R4a of corner member R4 and forms docking section J8.

And, dull and stereotyped 14 dock with corner member R4 and the hardware that forms hereinafter referred to as being engaged hardware N.In addition, the face that is engaged the outside of hardware N is called outer surface A, and inboard face is called inner surface B, and a side end face is called the first end face C, and the opposite side end face is called the second end face D.

As shown in Fig. 4 and Fig. 5 a, when docking operation, be preferably in the inboard configuration back of the body butt platform 25 of intermediate member 20.Back of the body butt platform 25 is the members from the inboard bearing flat plate 14 of middle member 20.Back of the body butt platform 25 comprises that separating the first back of the body butt material 25a, second that arranges carries on the back butt material 25b and vertical longitudinal member 25c, the 25c that is located between the first back of the body butt material 25a and the second back of the body butt material 25b.From the distance of the distance of the face in the outside of face to the second back of the body butt material 25b in the outside of the first back of the body butt material 25a and the face (with reference to Fig. 2) of inboard from the face of dull and stereotyped 12 inboard to dull and stereotyped 14 about equally.In the present embodiment, respectively be provided with a back of the body butt platform 25 at docking section J7, J8.

And, although (3) slot part of following explanation forms operation, (4) friction agitating procedure, (5) welding sequence, (6) connecting elements and inserts operation, (7) outside interim to engage the formal operation that engages of operation, (8) outside be the operation that docking section J7 and docking section J8 are carried out, but due to roughly the same to the job content of two docking sections, therefore explain as an example of docking section J8 example.

(3) slot part forms operation

Form in operation at slot part, corresponding to docking section J8, form slot part K at the outer surface A that is engaged hardware N.As shown in Fig. 5 b, it is to use known end mill etc. and cut out the width, the degree of depth of regulation and form the operation of slot part K along docking section J8 that slot part forms operation.Although in the present embodiment, the cross section of slot part K is rectangular, and other shape also can.

(5) friction agitating procedure

As shown in Fig. 5 b, in the friction agitating procedure, use large-scale throw G along the docking section J8 of the bottom surface that the comes across slot part K stirring that rubs.In the present embodiment, the friction agitating procedure comprise the outstanding material arrangement step that configure a pair of outstanding material, to docking section J8 carries out the interim interim joint operation that engages, the guide hole that forms guide hole in the formal predetermined insertion position that engages operation forms operation and docking section J8 carried out formal joint formal joint operation.

At this, with reference to Fig. 7 to the small-sized throw (hereinafter referred to as " small rotary instrument F ") that is used for each friction and stirs and than small rotary instrument F also large large-scale throw (hereinafter referred to as " large-scale throw G ") explain.

Small rotary instrument F shown in Fig. 7 a by the tool steel geometric ratio be engaged hardware N also the metal material of hard consisted of, comprise cylindrical shoulder F1 and be based in stirring pin (probe) F2 of the lower surface F11 of this shoulder F1.Although the size of small rotary instrument F, shape are set corresponding to the material that is engaged hardware N and thickness etc. and got final product, and be also less than large-scale throw G (with reference to Fig. 8 b) at least.So, engage owing to rubbing to stir under the effect of load little when using large-scale throw G, therefore, but reducing effect is in the load of friction agitating device, and, because the translational speed (transfer rate) of small rotary instrument F is also higher than the translational speed of large-scale throw G, therefore, can reduce friction to stir engages required time and cost.

The lower surface F11 of shoulder F1 be play the metal of pushing Plastic Flow and prevent its disperse to around the position of effect, form in the present embodiment concave shape.Although the external diameter X of shoulder F1 ₁Size there is no particular restriction, but in the present embodiment, than the external diameter Y of the shoulder G1 of large-scale throw G ₁Little.

Stirring pin F2 hangs down from the central authorities of the lower surface F11 of shoulder F1, in the present embodiment, forms the thin circular cone shape of front end.In addition, be formed with at the side face that stirs pin F2 and be arranged to spiral helicine agitator.Although there is no particular restriction for the size of the external diameter of stirring pin F2, in the present embodiment, maximum outside diameter (footpath, upper end) X ₂Maximum outside diameter (footpath, upper end) Y than the stirring pin G2 of large-scale throw G ₂Little, and minimum outer diameter (footpath, lower end) X ₃Than minimum outer diameter (footpath, the lower end) Y that stirs pin G2 ₃Little.In addition, stir the length L of pin F2 _ALength L than the stirring pin G2 of large-scale throw G _BLittle.

Large-scale throw G as shown in Figure 7b by the tool steel geometric ratio be engaged hardware N also the metal material of hard consisted of, comprise cylindrical shoulder G1 and be based in stirring pin (probe) G2 of the lower surface G11 of this shoulder G1.

The lower surface G11 of shoulder G1 is identical with small rotary instrument F, forms concave shape.Stirring pin G2 hangs down from the central authorities of the lower surface G11 of shoulder G1, in the present embodiment, forms the thin circular cone shape of front end.

As Fig. 6 and shown in Figure 8, in outstanding material arrangement step, be engaged a pair of outstanding material of both ends of the surface configuration of hardware N.The first outstanding material 31 and the second outstanding material 32 are members of clamping the form configuration of docking section J8, have respectively size, the shape that can cover the docking section J8 that comes across the first end face C and the second end face D.In the present embodiment, the first outstanding material 31 and the second outstanding material 32 are disposed at the first back of the body butt material 25a of back of the body butt platform 25.The surface of the first outstanding material 31 and the second outstanding material 32 flushes with the bottom surface of slot part K.Although there is no particular restriction for the material of the first outstanding material 31 and the second outstanding material 32, in the present embodiment, to form with the metal material that is engaged hardware N same composition.

In addition, being engaged hardware N engages by welding with the first outstanding material 31 and the second outstanding material 32.By this, when carrying out friction stirring described later, can prevent from being engaged hardware N and each outstanding material generation perforate.

Engage operation interim, use small rotary instrument F along the docking section J8 of the bottom surface that the comes across slot part K stirring that rubs.That is, as shown in Figure 8, make small rotary instrument F be positioned at starting position S _P1Directly over, starting position S _P1Be located on the appropriate location of the first outstanding material 31, then, right rotation limit, small rotary instrument F limit descended, sell F2 and (a) press on starting position S with reference to Fig. 7 thereby will stir _P1The integral body that stirs pin F2 enters the first outstanding material 31, and after the whole face of the lower surface F11 of shoulder F1 is contacted with the surface of the first outstanding material 31, small rotary instrument F is relatively moved towards the starting point s1 of interim joint operation while rotating.After small rotary instrument F arrives starting point s1, small rotary instrument F is not broken away from and move to the terminal point e1 of interim joint operation at starting point s1.After small rotary instrument F reaches home e1, small rotary instrument F is not broken away from and move to end position E _P1, at end position E _P1Small rotary instrument F is broken away from.

And, pass across the docking section J31 that is engaged hardware N and the first outstanding material 31 and be engaged hardware N when giving prominence to the docking section J32 of material 32 with second at the stirring pin F2 of small rotary instrument F, although the power effect that is pulled away from being engaged hardware N and each outstanding material is arranged, but engage by welding with the first outstanding material 31 and the second outstanding formed inner corner portion of material 32 owing to being engaged hardware N, therefore, can prevent from being engaged hardware N and the first outstanding material 31 and the second perforate of giving prominence between material 32.The interim end position E that engages operation _P1Become the starting position S of formal joint operation described later _M1

In addition, when engaging operation temporarily, can use small rotary instrument F along the docking section J31 that is engaged hardware N and the first outstanding material 31 and be engaged hardware N and the docking section J32 of the second outstanding material 32 stirring (give prominence to material and engage operation temporarily) that rubs.By this, can engage more firmly with the first outstanding material 31 and the second outstanding material 32 owing to being engaged hardware N, produce perforate in the time of therefore further preventing from carrying out formal joint operation described later.In addition, outstanding material engages operation temporarily and the interim operation that engages is the stirring that rubs continuously of mode with continuous path, thereby can improve workability.

As shown in Figure 7b, guide hole forms the operation that forms guide hole P1 on the starting position that operation is the friction stirring in formal joint operation described later.That is, in the guide hole of present embodiment forms operation, the starting position S on the surface that is set in the second outstanding material 32 _M1Form guide hole P1.

Guide hole P1 is that the insertion resistance (resistance of pressing in) that reduces the stirring pin G2 of large-scale throw G arranges for purpose, when with not shown drill bit etc., the stirring pin F2 of small rotary instrument F being broken away from the present embodiment,, formed punching n1 reaming forms.If utilize punching n1, due to the formation operation that can simplify guide hole P1, the activity duration can be shortened.Although there is no particular restriction for the form of guide hole P1, in the present embodiment, be cylindric.And, in the present embodiment, although form guide hole P1 at the second outstanding material 32, but there is no particular restriction in the position of guide hole P1, also can be formed at the first outstanding material 31, be more preferably, be formed on the extended line that appears at as the seam (boundary line) of the bottom surface of the slot part K of present embodiment.

In formal joint operation, use large-scale throw G to engage veritably docking section J8.In the formal joint operation of present embodiment, use large-scale throw G to the docking section J8 of interim engagement state from the outer surface A side that the is engaged hardware N stirring that rubs.

As shown in Figure 9, in formal joint operation, with stirring pin G2 insertion (being pressed into) starting position S of large-scale throw G _M1, make the stirring pin G2 of insertion not break away from halfway and move to end position E _M1That is, engage operation formal, begin friction from guide hole P1 and stir, and rub continuously and be stirred to end position E _M1

And, although in the present embodiment, at the second outstanding material 32, the starting position S that friction is stirred is set _M1, at the first outstanding material 31, end position E is set _M1, but starting position S _M1With end position E _M1Position and indefinite.

Describe formal joint operation in detail with reference to Fig. 9.

At first, make large-scale throw G be positioned at starting position S _M1Directly over (guide hole P1), then, right rotation limit, large-scale throw G limit is descended, thereby make the front end that stirs pin G2 insert guide hole P1.After the whole face that the integral body that stirs pin enters the lower surface G11 of the second outstanding material 32 and shoulder G1 is contacted with the surface of the second outstanding material 32, the stirring that rubs, and large-scale throw G is relatively moved towards the end of docking section J8, thus charge into docking section J8.When large-scale throw G is moved, metal around this stirs pin G2 is Plastic Flow successively, and from stirring on the position that pin G2 separates, the metal of Plastic Flow is underhardening and form plastification zone (hereinafter referred to as " slot part plastification zone W8 ") (with reference to Figure 10) again.

Entering the heat that is engaged hardware N might be excessive the time, preferably with water from the bottom surface (outer surface A side) of slot part K supply to large-scale throw G around and realize cooling.And, when between cooling water entering angle member R4 and dull and stereotyped 14, might produce oxide-film on the composition surface, but in the present embodiment, come perforate between closed angle member R4 and dull and stereotyped 14 owing to engaging operation temporarily, therefore cooling water is difficult to the perforate between entering angle member R4 and dull and stereotyped 14, and the quality at junction surface does not have the possibility of variation.

In being engaged the docking section J8 of hardware N, set the path that friction is stirred on the motion track on the seam that is engaged hardware N, large-scale throw G is relatively moved along this path, by this, from the stirring that rubs continuously of an end to the other end of docking section J8.Make after large-scale throw G relatively moves to the other end of docking section J8, the stirring that rubs, and according to this state towards end position E _M1Relatively move.Arrive end position E at large-scale throw G _M1Afterwards, large-scale throw G is risen on while rotating, stir pin G2 from end position E thereby make _M1Break away from.Be preferably in after formal joint operation finishes, cutting result from slot part K the bottom surface burr and make the bottom surface level and smooth.In addition, after formal joint operation finished, a pair of outstanding material was removed in cutting.

(5) welding sequence

Welding sequence is the operation of welding along docking section J8 from the inner surface B side that is engaged hardware N.As shown in figure 11, in welding sequence, temporarily pull down back of the body butt platform 25, carry out the protuberance weldings such as TIG welding or MIG welding from the inboard of slot part plastification zone W8, form weld metal T1 along docking section J8.The protuberance welding proceeds to weld metal T1 from being engaged the inner surface B projecting degree of hardware N.By carrying out welding sequence, even suppose to form breach (KissingBond) in the inboard of slot part plastification zone W8, due to salable this breach, therefore can improve intensity, watertightness and the air-tightness of bonding part.In addition, even because the friction agitating procedure produce to shrink the junction surface, and when making corner member R4 and dull and stereotyped 14 not be formed at same plane, by welding from the inner surface B side that is engaged hardware N, can revise the distortion that produces due to this contraction.

And, preferably cut in weld metal T1 from the outstanding fractional t1 of inner surface B '.By this, inner surface B is formed smoothly.

(6) connecting elements inserts operation

As shown in figure 12, connecting elements insertion operation is connecting elements U to be inserted the operation of slot part K.The width of connecting elements U, the degree of depth and length dimension respectively with width, the degree of depth and the length dimension of slot part K about equally, and by forming with the metal that is engaged hardware N identical component.That is, when connecting elements U inserted slot part K, the surface of connecting elements U flushed with the outer surface A that is engaged hardware N, and the both ends of the surface of connecting elements U flush with the first end face C that is engaged hardware N and the second end face D.In connecting elements inserts operation, owing to can be engaged the crooked of hardware N by above-mentioned welding sequence correction, so the bottom surface approximate horizontal of slot part K.By this, can insert suitably connecting elements U.

(8) the interim operation that engages in the outside

As Figure 13 and shown in Figure 14, in the outside engages operation temporarily, small rotary instrument F is engaged temporarily with the docking section J8b of connecting elements U with docking section J8a and the corner member R4 of connecting elements U along dull and stereotyped 14.The outside of present embodiment engages operation temporarily and comprises the outstanding material arrangement step that configures a pair of outstanding material, with small rotary instrument F, docking section J8a and docking section J8b are carried out the guide hole that the interim outside that engages engages operation temporarily and form guide hole in the predetermined insertion position of large-scale throw G and form operation.

As Figure 13 and shown in Figure 14, outstanding material arrangement step is that the first outstanding material 33 and the second outstanding material 34 are disposed at the first end face C of being engaged hardware N and the operation of the second end face D.The first outstanding material 33 and the second outstanding material 34 have respectively to clamp the form configuration of docking section J8, docking section J8a and docking section J8b the size, the shape that cover each docking section that comes across the first end face C and the second end face D.In the present embodiment, the first outstanding material 33 and the second outstanding material 34 are disposed at the first back of the body butt material 25a of back of the body butt platform 25.The surface of the first outstanding material 33 and the second outstanding material 34 is roughly the same with the outer surface A that is engaged hardware N.Although there is no particular restriction for the material of the first outstanding material 33 and the second outstanding material 34, in the present embodiment by forming with the metal material that is engaged hardware N same composition.

In the outside engages operation temporarily, use small rotary instrument F along the docking section J8a that comes across the outer surface A that is engaged hardware N and the docking section J8b stirring that rubs.As shown in figure 14, in the present embodiment, in the outside engages operation temporarily, make small rotary instrument F from being set in the starting position S of the first outstanding material 33 _P2The mode that rises with continuous path relatively moves to the end position E that is set in the first outstanding material 33 _P2Till the stirring that rubs.

That is, the outside engages operation temporarily and comprises that engaging the first outstanding material 33 engages operation with the first outstanding material of the docking section J33 that is engaged hardware N temporarily, engages and dull and stereotyped 14 engage operation with first outside of the docking section J8a of connecting elements U temporarily, engage second and give prominence to material 34 and give prominence to second of the docking section J34 that is engaged hardware N that material engages operation and engagement angle member R4 engages operation with second outside of the docking section J8b of connecting elements U temporarily temporarily.

In the first outstanding material engages operation temporarily, small rotary instrument F is pressed into the starting position S that is set in the first outstanding material 33 _P2After, make small rotary instrument F relatively move to the starting point s33 that the first outstanding material engages operation temporarily.After small rotary instrument F arrives starting point s33, move to along docking section J33 the terminal point e33 that the first outstanding material engages operation temporarily.After small rotary instrument F reaches home e33, small rotary instrument F is not broken away from, temporarily enter the first outstanding material 33, and move to the starting point s14 that first outside engages operation temporarily.

And, in the situation that make small rotary instrument F right rotation, owing to producing small cavity blemish in the left side of the direct of travel of small rotary instrument F, therefore, preferably set the first outstanding material and engage the starting point s33 of operation and the position of terminal point e33, so that be engaged the right side that hardware N is positioned at the direct of travel of small rotary instrument F.Like this, be engaged hardware N side because cavity blemish is difficult to be created in, can obtain high-quality conjugant.

In the situation that make small rotary instrument F anticlockwise, owing to producing small cavity blemish on the right side of the direct of travel of small rotary instrument F, therefore, preferably set the first outstanding material and engage the starting point of operation and the position of terminal point, so that be engaged the left side that hardware N is positioned at the direct of travel of small rotary instrument F.Particularly, although diagram is omitted, only need the position of the terminal point e33 when small rotary instrument F right rotation that starting point is set, the position of the starting point s33 when small rotary instrument F right rotation arranges terminal point and gets final product.

Arrive after first outside engages the starting point s14 of operation temporarily at small rotary instrument F, state moves to first outside and engages operation temporarily according to this, and small rotary instrument F is moved along docking section J8a.Arrive after first outside engages the terminal point e14 of operation at small rotary instrument F temporarily, temporarily enter the second outstanding material 34, and move to the starting point s34 that the second outstanding material engages operation temporarily.After small rotary instrument F arrives starting point s34, make small rotary instrument F move to along docking section J34 the terminal point e34 that the second outstanding material engages operation temporarily.

After small rotary instrument F reaches home e34, small rotary instrument F is not broken away from and move to the starting point sR4 that second outside engages operation temporarily.After small rotary instrument F arrives sR4, small rotary instrument F is moved along docking section J8b, and state move to second outside and engage operation temporarily according to this.Arrive after second outside engages the terminal point eR4 of operation temporarily at small rotary instrument F, state is charged into the first outstanding material 33 according to this, and makes small rotary instrument F at end position E _P2Break away from.And, end position E _P2Also the starting position S that the outside described later formally engages operation _M2

After the outside engages the operation end temporarily, utilize to be formed at end position E _P2Punching (not shown) form guide hole.Because guide hole forms operation and above-mentioned roughly the same and the description thereof will be omitted.

(9) the formal operation that engages in the outside

The formal operation that engages in the outside is that real the joint comes across the docking section J8a of the outer surface A that is engaged hardware N and the operation of J8b.In the outside of present embodiment formally engages operation, use large-scale throw G, to the docking section J8a of interim engagement state and docking section J8b from the outer surface A side that the is engaged hardware N stirring that rubs.

As shown in Figure 15 a, in the outside formally engages operation, with the stirring pin G2 insertion starting position S of large-scale throw G _M2, make the stirring pin G2 of insertion not break away from halfway and move to end position E _M2And, although in the present embodiment, with the starting position S of friction stirring _M2And end position E _M2Be located on the first outstanding material 33, but starting position S _M2And end position E _M2Position and indefinite.

Illustrate in greater detail the formal operation that engages in the outside with reference to Figure 15 a and Figure 15 b.

At first, as shown in Figure 15 a, make large-scale throw G be positioned at guide hole (starting position S _M2) directly over, then, right rotation limit, large-scale throw G limit is descended, thereby will stir the front end insertion guide hole of pin G2.Enter the first outstanding material 33 in the integral body that stirs pin G2, and after the whole face of the lower surface G11 of shoulder G1 is contacted with the surface of the first outstanding material 33, the stirring that rubs makes large-scale throw G relatively move towards the end of docking section J8b, thereby charges into docking section J8b.When large-scale throw G is moved, metal around it stirs pin G2 is Plastic Flow successively, and from stirring on the position that pin G2 separates, the metal of Plastic Flow is underhardening and form plastification zone (hereinafter referred to as " outside plastification zone W8 ' ") again.

Then, the form that is not contacted with docking section J34 and docking section J33 take plastification zone, the outside W8 ' that forms makes large-scale throw G move back and forth (in the present embodiment as secondary reciprocating) along docking section J8b and the docking section J8a stirring that rubs continuously.At last, make large-scale throw G by docking section J33, and at the end position E that is set in the first outstanding material 33 _M2Break away from.

As shown in Figure 15 b, preferably with the stirring that rubs of the form of front end side contact in the bottom surface of slot part K of outside plastification zone W8 '.By this structure, can spread all over the total length of depth direction of docking section J8a and docking section J8b and the stirring that rubs.In addition, large-scale throw G is staggered back and forth, therefore the stirring that can rub to the whole face of the seam of the lower surface of connecting elements U and slot part K bottom surface by this, can further improve watertightness and air-tightness.

And the form that does not contact docking section J34 and docking section J33 with outside plastification zone W8 ' moves back and forth large-scale throw G, can prevent by this oxide entrapment of docking section J34 and docking section J33.

As shown in figure 11, joint method according to present embodiment described above, the docking section J8 to flat board 14 and corner member R4 rubs stirring from the outside that is engaged hardware N (tectosome 1) after, carry out welding from the inboard, even therefore form breach (with reference to Figure 35 b, Figure 35 c) at the docking section J8 that comes across inner surface B, due to salable weld metal T1, therefore can improve watertightness and air-tightness, and can improve the bond strength of bonding part.In addition, according to welding, even if present embodiment is such, for example be trapped among the tectosome 1 on four limits with wall member, also be not subjected to the restriction of the cooperation etc. of device, can engage operation from the inboard with comparalive ease.

In addition, contact with weld metal T1 by making slot part plastification zone W8, can spread all over the total length sealing of the depth direction of docking section J8.In addition, before formally engaging each operation of operation in rub agitating procedure and the outside, engage operation temporarily, can prevent that the docking section from producing perforate when formal the joint.

Although above embodiments of the present invention are described, can do suitable change not breaking away from the scope of the inventive concept.In the explanation of other embodiment, omit the explanation that repeats with the first embodiment.

For example, although use in the first embodiment connecting elements U to engage, in the situation that it is large to be engaged the thickness of wall member of hardware N, can utilize a plurality of connecting elements U and slot part K to engage.On the other hand, in the situation that it is little to be engaged the thickness of hardware N, also can not use connecting elements U, after rubbing stirring from the outside that is engaged hardware N, weld from the inboard.

[the second embodiment]

In addition, for example, as shown in figure 16, when carrying out above-mentioned welding sequence, also can comprise: in the front (being engaged the inner surface B of hardware N) of slot part plastification zone W8, the recess that forms recess M1 along docking section J8 forms operation; And the weld metal filling work procedure that weld metal T2 is filled in recess M1.According to this joint method, can improve the workability when welding.In addition, by in excision weld metal T2 from the outstanding part of the inner surface B that is engaged hardware N (T2 '), can form smoothly inner surface B.And although in the present embodiment, recess M1 cross section is rectangular, and other shape also can.

[the 3rd embodiment]

As shown in figure 17, the joint method of the 3rd embodiment docks and forms docking section J10 in this point with the end face of the second hardware 1b of opposite side with regard to the side of the first hardware 1a of a side, and is different from the first embodiment.Namely, although use in the first embodiment corner member R1～R4 to make the side end face of each member against each other and form tectosome, but also can as present embodiment, make the side of the hardware of a side dock with the side end face of the hardware of opposite side and form structure.In the present embodiment, a pair of the first hardware 1a is docked and the tectosome 50 of the rectangular tubular of Formation cross-section with a pair of the second hardware 1b.

The joint method of present embodiment comprises: the side of the first hardware 1a is docked and the docking section J10 that forms the friction agitating procedure that rubs and stir from the outer surface A side of tectosome 50 (being engaged hardware N1) with the side end face of the second hardware 1b; And the welding sequence that welds from the inner surface B side of tectosome 50.

The welding sequence of present embodiment be rub from the first hardware 1a and the formed outer surface A that is engaged hardware N1 of the second hardware 1b stir after, the operation that inner corner portion I (bight of the inboard of the first hardware 1a and the second hardware 1b) is welded.That is, by welding, the total length that spreads all over the docking section J10 that comes across the inner surface that is engaged hardware N forms weld metal T3.By this, even if suppose to form breach (with reference to Figure 35 c) at inner corner portion I in the friction agitating procedure, also can seal this breach by welding, therefore can improve watertightness and air-tightness, and can improve the intensity of bonding part.In addition, as shown in Figure 35 c, even the contraction of metal on one side owing to engaging overturn, also can revise this upset by welding.In addition, although be difficult for the stirring that rubs to inner corner portion I, if by welding, can engage with comparalive ease operation.And, the formed plastification of friction agitating procedure zone W10 is contacted with the formed weld metal T3 of welding sequence, thereby further improve watertightness and air-tightness.

[the 4th embodiment]

As Figure 18 and shown in Figure 19, the joint method of the 4th embodiment is different from the first embodiment at this point of the lid member 10b that comprises the end that is cylindrical member 10a cylindraceous and covers cylindrical member 10a.The joint method of present embodiment comprises rub the friction agitating procedure that stirs and the welding sequence that inner corner portion I ' is welded to docking section J11.

The tectosome 60 of present embodiment comprises that the end that makes cylindrical member 10a is docked with the side of lid member 10b and the docking section J11 that forms.As shown in Figure 19 a, in the friction agitating procedure, make large-scale throw G along docking section J11 right rotation, and seeing the counterclockwise mobile stirring that rubs from the face side of lid member 10b.

As shown in Figure 19 b, after the agitating procedure that rubs, the inner corner portion I ' of the inside of tectosome 60 is welded.By forming weld metal T3 at inner corner portion I ', can improve the intensity at junction surface, and can improve air-tightness and watertightness.In addition, according to welding sequence, even the tectosome cylindraceous 60 of present embodiment due to the problems such as cooperation of energy solving device, therefore can engage operation with comparalive ease.

And large-scale throw G is preferably in and sees counterclockwise mobile from the face side of lid member 10b.By this, because the possibility that produces defective in lid member 10b side uprises, thereby can improve air-tightness and the watertightness of cylindrical member 10a.In addition, although in the present embodiment, cylindrical member 10a is engaged with lid member 10b, also can make the side of a pair of cylindrical member 10a dock each other and engage.

[the 5th embodiment]

Just after welding sequence was carried out in the inboard of tectosome, this point of agitating procedure that rubs from the outside was different from the joint method of the first embodiment～the 4th embodiment for the joint method of the 5th embodiment shown below～the 9th embodiment.The joint method of the 5th embodiment explains as an example of the operation of making tectosome shown in Figure 11 example.

The joint method of present embodiment comprises that (1) intermediate member joint operation, (2) docking operation, (3) welding sequence, (4) slot part form the interim formally joint operation of operation, (8) outside that engages outside operation, (5) friction agitating procedure, (6) connecting elements insertion operation, (7).

(1) intermediate member engages operation

Intermediate member joint operation is that the intermediate of formation tectosome 1 is the operation of intermediate member 20 (with reference to Fig. 3 b).Because intermediate member joint operation is identical with the first embodiment, therefore the description thereof will be omitted.

(2) docking operation

As shown in figure 20, in the docking operation, after intermediate member 20 is spun upside down, with the peristome 21 (with reference to Fig. 3 b) of dull and stereotyped 14 insertion intermediate members 20.Dull and stereotyped 14 width and the width of peristome 21 are roughly the same.That is, when dull and stereotyped 14 inserted peristome 21, a pair of side end face R3b, the R4a that come across peristome 21 docked respectively with side end face 14a, the 14b of flat board 14.As shown in figure 20, formation docking section J7 on the interface of dull and stereotyped 14 opposite side end face 14a and the side end face R3b of corner member R3.On the other hand, formation docking section J8 on the interface of a side end face 14b of dull and stereotyped 14 and the opposite side end face R4a of corner member R4.

And, although (3) welding sequence of following explanation, (4) slot part form operation, (5) friction agitating procedure, (6) connecting elements and insert operation, (7) outside interim to engage the formal operation that engages of operation, (8) outside be the operation that docking section J7 and docking section J8 are carried out, but because job content is roughly the same to two docking sections, therefore explain as an example of docking section J8 example.

In addition, as shown in figure 21, dull and stereotyped 14 dock with corner member R4 and the hardware that forms also referred to as being engaged hardware N2.In addition, the face that is engaged the outside of hardware N2 is called outer surface A, inboard face is called inner surface B, and a side end face is called the first end face C, and the opposite side end face is called the second end face D (with reference to Figure 25).

(3) welding sequence

Welding sequence is the operation of welding along docking section J8 from the inner surface B side that is engaged hardware N2.As shown in figure 21, in welding sequence, carry out the protuberance welding such as TIG welding or MIG welding, form weld metal T1 along docking section J8.The protuberance welding proceeds to weld metal T1 from being engaged the inner surface B projecting degree of hardware N2.By carrying out welding sequence, when carrying out formal joint operation described later (friction agitating procedure), the inner surface B side that can prevent at docking section J8 forms breach (KissingBond).And, preferably with the Partial Resection of giving prominence to from inner surface B in weld metal T1.By this, can form smoothly inner surface B.

(4) slot part forms operation

As Figure 22 and shown in Figure 23, form in operation at slot part, in the outer surface A of docking section J8 side, along the length direction formation slot part K of docking section J8.At this, form operation, friction agitating procedure described later, connecting elements at slot part and insert operation, the outside and engage during operation and the outside formally engage operation temporarily, be preferably in the inboard configuration back of the body butt platform 25 of intermediate member 20.To form operation roughly the same with the first embodiment due to slot part, so the description thereof will be omitted.

(5) friction agitating procedure

As shown in Figure 23 b, in the friction agitating procedure, use large-scale throw G along the docking section J8 of the bottom surface that the comes across slot part K stirring that rubs.In the present embodiment, the friction agitating procedure comprise the outstanding material arrangement step (with reference to Figure 24 and Figure 25) that configure a pair of outstanding material, to docking section J8 carries out the interim interim joint operation (with reference to Figure 25) that engages, the guide hole that forms guide hole in the formal predetermined insertion position that engages operation forms operation and docking section J8 carried out formal joint formal joint operation (with reference to Figure 26).Due to outstanding material arrangement step, engage operation and formally engage operation and the first embodiment is roughly the same temporarily, therefore omit detailed explanation.

As shown in figure 27, in the formal joint operation of present embodiment, preferably set the degree of depth that friction is stirred, make the weld metal T1 that is formed at inner surface B contact with the slot part plastification zone W8 that is formed at outer surface A.By this, because the total length of the depth direction that can spread all over docking section J8 seals, therefore can improve watertightness and air-tightness.And, be preferably in after formal joint operation finishes, with result from slot part K the bottom surface the excision such as burr and form level and smooth bottom surface.In addition, after formal joint operation finishes, a pair of outstanding material cutting is removed.

And roughly the same owing to formally engaging operation and the first embodiment outside (6) connecting elements insertion operation, (7) outside interim joint operation and (8), therefore the description thereof will be omitted.

Joint method according to present embodiment described above, at the friction agitating procedure (formally engaging operation) that carries out from the outer surface A side that is engaged hardware N2 (tectosome 1) before, by carrying out welding sequence from inner surface B side, the stirring that rubs under the interim state that engages of inner surface B can be made.By this, can prevent from namely producing breach (Kissing Bond) in the rear side of the face that stirs of rubbing in the inner surface B side that is engaged hardware N2, thereby can improve watertightness and the air-tightness of bonding part.

In addition, owing to welding by the inner surface B side from tectosome 1, compare with the situation about stirring that rubs, therefore the restrictions such as energy solving device cooperation can engage operation with comparalive ease.In addition, due in the friction agitating procedure, therefore the stirring that can rub under the state that the pair of metal member is engaged each other temporarily can improve workability.

In addition, as shown in figure 27, contact with slot part plastification zone W8 by making weld metal T1, can seal the depth direction of docking section J8.

[the 6th embodiment]

Then, the 6th embodiment of the present invention is explained, although in the welding sequence of the 5th embodiment, directly docking section J8 is welded, also can as shown in the welding sequence of the 6th embodiment, be pre-formed recess M1 along docking section J8.And except welding sequence, remaining is identical with the 5th embodiment due to the joint method of the 6th embodiment, the explanation of therefore omitting other operation.

As shown in Figure 28 a and Figure 28 b, the welding sequence of the 6th embodiment comprises the weld metal filling work procedure that forms operation and recess M1 is filled weld metal T2 along the recess of the docking section J8 formation recess M1 of the inner surface B that is engaged hardware N2 that comes across flat board 14 and corner member R4 formation.

As shown in Figure 28 a, form in operation at recess, use the length direction of known end mill mode from inner surface B along docking section J8 to form recess M1 with width, the degree of depth of regulation.Although in the present embodiment, recess M1 cross section is rectangular, and other shape also can.The degree of depth of recess M1 corresponding to after the degree of depth and suitably setting in plastification zone in the friction agitating procedure that carries out get final product.

As shown in Figure 28 b, in the weld metal filling work procedure, weld metal T2 is filled in recess M1.In the weld metal filling work procedure, recess M1 is carried out the protuberance welding such as MIG welding or TIG welding, make weld metal T2 outstanding from inner surface B.Part to giving prominence to from inner surface B in weld metal T2 by cutting along inner surface B, can form inner surface B smoothly.

Like this, in welding sequence, form operation and weld metal filling work procedure by carrying out recess, can improve the workability of welding sequence.And, although in the present embodiment, corner member R with form recess M1 after dull and stereotyped 14 docks, be not limited thereto, also can downcut in advance the bight of corner member R4 and dull and stereotyped 14 and after forming breach, make above-mentioned breach docking and formation recess M1.

[the 7th embodiment]

Then, the 7th embodiment of the present invention is explained.As shown in figure 29, in the 7th embodiment, vertically dock from the end of the second hardware 111b in the end of the hardware of pair of plates shape, the first hardware 111a and to engage this point different with the 6th embodiment.The joint method of the 7th embodiment comprises (1) docking operation, (2) welding sequence, (3) friction agitating procedure.

(1) docking operation

As shown in Figure 29 a, in the docking operation, vertically dock with the end of the second hardware 111b the end of the first hardware 111a.The first hardware 111a and the second hardware 111b are tabular, are made of the metal material that stirs that can rub such as aluminium, aluminium alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy.End at the first metal material 111a, with the wide roughly concave part 141 of the rectangular depression of width Formation cross-section of half of the plate of the first hardware 111a, and with the wide roughly rectangular outstanding protuberance 142 of width Formation cross-section of half of the plate of the first hardware 111a.Similarly, end at the second hardware 111b, with the wide roughly concave part 143 of the rectangular depression of width Formation cross-section of half of the plate of the second hardware 111b, and with the wide roughly rectangular outstanding protuberance 144 of width Formation cross-section of half of the plate of the second hardware 111b.

In the docking operation, make the protuberance 144 of the second hardware 111b be connected to the concave part 141 of the first hardware 111a, and the first hardware 111a is generally perpendicularly docked with the second hardware 111b.By this, form docking section J110 on the interface of the first hardware 111a and the second hardware 111b.As shown in Figure 29 b, dock with the second hardware 111b at the first hardware 111a and on the first end face C that is engaged hardware N3 that forms, the positive docking section J110 that roughly is crank-like that sees occurred.

(2) welding sequence

As shown in Figure 29 b, in welding sequence, the docking section J110 that comes across the inner corner portion I that is engaged hardware N3 is carried out welding.At this, so-called inner corner portion I refers to the angle part of the first hardware 111a and the second hardware 111b formed inboard.That is, in welding sequence, from the inner surface B (being engaged the inboard of hardware N3) that is engaged hardware N3, carry out the TIG welding or the MIG welding waits protuberance to weld along the length direction of docking section J110.And, preferably to cutting and form level and smooth shape from the outstanding part of the inner surface B that is engaged hardware N3 in formed weld metal T3 in welding sequence.

(3) friction agitating procedure

The friction agitating procedure of present embodiment comprises outstanding material 146 is installed on the formal joint operation that the outstanding material that is engaged hardware N3 arranges operation and docking section J10 is rubbed and stirs from outer surface A side.As shown in Figure 30 a, in outstanding material arranges operation, at the first end face C that is engaged hardware N3 and a pair of outstanding material 146 of the upper installation of the second end face (not shown).Outstanding material 146 is and the tabular component that is engaged hardware N3 same composition that the thickness of slab of thickness and the second hardware 111b about equally.Outstanding material 146 is configured to be engaged the upper surface flush of outer surface A and the outstanding material 146 of hardware N3, is engaged in by welding to be engaged on hardware N3.

Engage operation formal, use large-scale throw G, stirring rubs from the outer surface A side that is engaged hardware N3 along docking section J110.In the present embodiment, on outstanding material 146, set starting position S on the extended line of docking section J110 _M3, set end position on the outstanding material of not shown opposite side.Then, use large-scale throw G along the docking section J110 stirring that rubs.As shown in Figure 30 b, form plastification zone W110 by formal joint operation on the J110 of docking section.

And, when the throw right rotation, may form cavity blemish in the left side of direct of travel, when the throw anticlockwise, may form cavity blemish on the right side of direct of travel.Therefore, for example, as shown in Figure 30 a, in the present embodiment, preferably make large-scale throw G anticlockwise, and from giving prominence to the starting position S of material 146 _M3J110 moves along the docking section.By this, even suppose to form cavity blemish, also be formed at away from the position that is engaged hardware N3 inboard.

According to the joint method of present embodiment, even in the situation that the pair of metal member carries out vertical butt joint, also can improve watertightness and air-tightness.That is, before rubbing agitating procedure from the outer surface A side that is engaged hardware N3, carry out welding sequence from inner surface B side, by this can be under the state of interim engages inner surface B, stirring rubs.Thereby can prevent be engaged the inner surface B side of hardware N3, namely the rear side at the face that stirs of rubbing produces breach (Kissing Bond), can improve watertightness and the air-tightness of bonding part.In addition, by welding from the inner surface B that is engaged hardware N3, even if in the position that such being difficult to such as inner corner portion I rubs and stir, also can engage with comparalive ease operation.In addition, due in the friction agitating procedure, therefore the stirring that rubs under the state that the pair of metal member engages each other temporarily can improve workability.In addition, by welding from the inner surface B side that is engaged hardware N3, can prevent from making the second hardware 111b turn to outer surface A side due to the thermal contraction of plastification zone W110.

[the 8th embodiment]

Then, the 8th embodiment of the present invention is explained.The joint method of the 8th embodiment is the variation of the 7th embodiment, and this point that has recess with regard to inner corner portion I is different from the 7th embodiment.The joint method of the 8th embodiment comprises (1) docking operation, (2) welding sequence, (3) friction agitating procedure.

(1) docking operation

As shown in Figure 31 a, in the docking operation, vertically dock with the end of the second hardware 151b the end of the first hardware 151a.The first hardware 151a and the second hardware 151b are tabular, are made of the metal material that stirs that can rub such as aluminium, aluminium alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy.The first hardware 151a has main part 152, than the thin first step section 153 of main part 152 and the second step section 154 thinner than first step section 153.The thickness of slab of the length p of second step section 154 and the second hardware 151b about equally.The length q of first step section 153 is less than the length of second step section 154.

As shown in Figure 31 b, in the docking operation, make the end face 155 of the second hardware 151b be connected to the second step section 154 of the first hardware 151a.Like this, by the main part 152 of the first hardware 151a, first step section 153 and the second rectangular recess M2 of hardware 151b Formation cross-section.That is, form recess M2 along coming across the formed docking section J111 that is engaged the inner corner portion I of hardware N4 of the first hardware 151a and the second hardware 151b.

(2) welding sequence

As shown in Figure 31 c, in welding sequence, the recess M2 that forms along the docking section J111 that is engaged hardware N4 is carried out the protuberance welding such as TIG welding or MIG welding.And, to cutting and form level and smooth shape from the outstanding part of the inner surface B that is engaged hardware N4 in the weld metal T4 that forms in welding sequence.

(3) friction agitating procedure

In the friction agitating procedure, use large-scale throw G from the stirring that rubs of the outer surface A side of docking section J111.Agitating procedure and the 7th embodiment are roughly the same owing to rubbing, and therefore omit detailed explanation.

According to the joint method of present embodiment, can obtain the effect identical with the 7th embodiment, even and in the situation that the first hardware 151a and the second hardware 151b vertical butt joint by recess M2 is set, can easily be carried out weld job.

In addition, although omission specific description, but shown in figure 32, use the joint method of the 8th embodiment, can form the tectosome 150 of the rectangular tubular in the cross section that formed by the first hardware 151a, the second hardware 151b, the 3rd hardware 151c identical with the first hardware 151a and the 4th hardware 151d identical with the second hardware 151d.This tectosome 150 for example can use as vacuum tank.And, also can make as required the weld metal T4 that forms in the regional W111 of the plastification that forms in the friction agitating procedure and welding sequence overlapping, can further improve air-tightness and watertightness.

[the 9th embodiment]

Then, the 9th embodiment of the present invention is explained.As Figure 33 and shown in Figure 34, in the joint method of the 9th embodiment, engage the lid member 161b that is cylindrical member 161a cylindraceous and covers the end of cylindrical member 161a.The 9th embodiment is the variation of the 4th embodiment.The joint method of present embodiment comprises (1) docking operation, (2) welding sequence, (3) friction agitating procedure.

As shown in figure 33, in the docking operation, the end face of cylindrical member 161a is docked with lid member 161b.Cylindrical member 161a is hardware cylindraceous.The end of cylindrical member 161a has that width with half of thickness of slab is recessed to form the rectangular concave part in cross section 162 and with half the outstanding rectangular protuberance 163 of Formation cross-section of width of thickness of slab.

Lid member 161b is the member that seamlessly covers the peristome of cylindrical member 161a, has discoideus main part 164, protrudes from distolateral and a teat 165 that the cross section is rounded of main part 164.Teat 165 is concentric with main part 164, and diameter is less than the diameter of main part 164.

As shown in figure 34, cylindrical member 161a is docked with lid member 161b, make the concave part 162 of cylindrical member 161a and teat 165 butts of lid member 161b.Cylindrical member 161a docks with lid member 161b and forms docking section J112.The member that cylindrical member 161a and lid member 161b consist of is for being engaged hardware N5.

(2) welding sequence

As shown in Figure 34 a, in welding sequence, weld along the docking section J112 that is formed at the inner corner portion I ' that is engaged hardware N5.In the present embodiment, carry out TIG welding or MIG welding and wait protuberance to weld, make weld metal T5 overlook direction and see and circularly be formed at the inner surface B that is engaged hardware N5.

(3) friction agitating procedure

As shown in Figure 34 b, in the friction agitating procedure, use the large-scale throw G stirring that rubs from the outer surface A side that is engaged hardware N5 along docking section J112.In the friction agitating procedure, make large-scale throw G right rotation along docking section J112, and large-scale throw G is counterclockwise being moved and the stirring that rubs from the face side observation of lid member 161b.Like this, by making large-scale throw G right rotation, and will cover the left side that member 161b is disposed at direct of travel, by this, the possibility that forms cavity blemish in lid member 161b side uprises.Like this, cavity blemish can be formed at the position away from the hollow bulb that is engaged hardware N5.

According to the joint method of the 9th embodiment, even when engaging cylindrical member 161a and cover the distolateral lid member 161b of cylindrical member 161a, also can improve watertightness and air-tightness.That is, before rubbing agitating procedure from the outer surface A that is engaged hardware N5, carry out welding sequence from the inner surface B side that is engaged hardware N5, by this, stirring can rub under the state of interim engages inner surface B.In addition, by welding from the inner surface B that is engaged hardware N5, even on the position of stirring that is difficult to like this such as inner corner portion I ' to rub, the problems such as cooperation due to can solving device can engage operation with comparalive ease.In addition, owing to carrying out welding sequence before the friction agitating procedure, hardware is engaged each other temporarily, the operation of the agitating procedure that therefore can easily rub.

Although above embodiments of the present invention are described, can do suitable change not deviating from the scope of the inventive concept.For example, in welding sequence, be not limited to TIG welding or MIG welding, also can adopt other known welding method.

Claims (9)

1. joint method, the side of a hardware is docked with the side end face of another hardware form the docking section, it is characterized in that, carrying out described docking section is rubbed from described hardware outer surface side each other the friction agitating procedure that stirs and after described outer surface side has formed the plastification zone, carry out following welding sequence: described docking section is swelled welding from described hardware inner corner portion each other based on TIG welding or MIG welding, thereby along described docking section formation weld metal.

2. joint method, in the tectosome of the tubular that forms in a plurality of hardware docking, the side of a hardware is docked with the side end face of another hardware form the docking section, it is characterized in that, carrying out described docking section is rubbed from the outer surface side of described tectosome the friction agitating procedure that stirs and after described outer surface side has formed the plastification zone, carry out following welding sequence: described docking section is swelled welding from the inner corner portion of described tectosome based on TIG welding or MIG welding, thereby form weld metal along described docking section.

3. joint method as claimed in claim 1 or 2, is characterized in that, the described plastification zone that forms in described friction agitating procedure is contacted with the described weld metal that forms in described welding sequence.

4. joint method as claimed in claim 1, is characterized in that, in described welding sequence, comprises described weld metal is filled in weld metal filling work procedure in the recess that forms along the docking section that comes across described inner corner portion.

5. joint method as claimed in claim 2, is characterized in that, in described welding sequence, comprises described weld metal is filled in along the docking section of the inner corner portion that comes across described tectosome and the weld metal filling work procedure in the recess that forms.

6. joint method as claimed in claim 1 or 2, it is characterized in that, in described friction agitating procedure, be included in and utilize before large-scale throw carries out the formal formal joint operation that engages, utilize small-sized throw to carry out the interim interim joint operation that engages.

7. joint method as claimed in claim 1 or 2, it is characterized in that, in described friction agitating procedure, the outstanding material arrangement step and the outstanding material that stirs that rubs along described outstanding material and the docking section of described hardware that are included in a pair of outstanding material of both sides configuration of described docking section engage operation temporarily.

8. joint method as claimed in claim 1 or 2, is characterized in that, in described friction agitating procedure, the guide hole that the predetermined insertion position of the throw that being included in rubs stirs is pre-formed guide hole forms operation.

9. joint method, be during the lid member of cylindrical member cylindraceous with the end that covers cylindrical member dock the tectosome of formation, the side of the hardware of described lid member is docked with the side end face of the hardware of described cylindrical member form the docking section, it is characterized in that, carrying out described docking section is rubbed from the outer surface side of described tectosome the friction agitating procedure that stirs and after described outer surface side has formed the plastification zone, carry out following welding sequence: described docking section is swelled welding from the inner corner portion of described tectosome based on TIG welding or MIG welding, thereby form weld metal along described docking section.

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