CN103934565B

CN103934565B - The friction stirring connecting method of double face slab

Info

Publication number: CN103934565B
Application number: CN201410138185.2A
Authority: CN
Inventors: J·马丁; 堀久司; 濑尾伸城
Original assignee: Welding Institute England; Nippon Light Metal Co Ltd
Current assignee: Welding Institute England; Nippon Light Metal Co Ltd
Priority date: 2011-01-19
Filing date: 2011-12-26
Publication date: 2016-09-14
Anticipated expiration: 2031-12-26
Also published as: CN103459081A; KR20140029390A; CN104002037A; KR101471320B1; JP5559214B2; JP2013027921A; TW201235138A; CN103459081B; CN104002037B; WO2012098810A1; TWI494185B; CN103934565A; CN103894727A; CN103894727B

Abstract

The present invention provides a kind of joint method, when using twin shaft shoulder stirring-head type instrument to engage a pair metallic plate, it is possible to suppresses the generation of joint defect and can engage well.nullThrow unit (2) has twin shaft shoulder stirring-head type instrument (5)，This twin shaft shoulder stirring-head type instrument (5) is by the first shaft shoulder portion (11)、Second shaft shoulder portion (12) and the pin (13) being formed between the first shaft shoulder portion (11) and the second shaft shoulder portion (12) are constituted，It is characterized in that，Throw unit (2) has the cylindric keeper (3) in the chuck portion (1a) being fixed on friction-stir device (1)、It is inserted into the sliding axle (4) that keeper (3) is internal and rotates integrally with keeper (3)、First shaft shoulder portion (11) is fixed on twin shaft shoulder stirring-head type instrument (5) and so that the sliding axle of the front end of sliding axle (4)) (4) sliding members (6) of being formed between keeper (3) and sliding axle (4) relative to the mode that keeper (3) slides axially.

Description

The friction stirring connecting method of double face slab

Present patent application be international application no be PCT/JP2011/080081, international filing date is On December 26th, 2011, enters the Application No. 201180065081.8 of National Phase in China, title For " throw unit, friction stirring connecting method, the assembly of double face slab and double face slab Friction stirring connecting method " the divisional application of application for a patent for invention.

Technical field

The present invention relates to that there is twin shaft shoulder stirring-head type instrument (Japanese: ボ PVC Application Star Le, bobbin Tool) throw unit, use the friction stirring connecting method of above-mentioned throw unit, make The assembly of double face slab that engages with above-mentioned throw unit and use above-mentioned throw The friction stirring connecting method of double face slab.

Background technology

Conventionally, there is known twin shaft shoulder stirring-head type instrument is used as the end face to metallic plate and carries out each other The instrument (with reference to patent documentation 1) that friction-stir engages.Twin shaft shoulder stirring-head type instrument includes a pair Shaft shoulder portion and the pin formed between above-mentioned shaft shoulder portion.When a pair metallic plate is engaged, by metallic plate Fixing make it immovable, by the twin shaft shoulder stirring-head type instrument of high speed rotating from the one of metallic plate End inserts, and makes pin move along docking section.Thereby, the metal of end face each surrounding is just stirred by friction Mix and make metallic plate be engaged with each other.If using twin shaft shoulder stirring-head type instrument, due at metallic plate Rear side also has shaft shoulder portion, and therefore, the back of the body that generally can omit the rear side being arranged in metallic plate connects Component (Japanese: when portion's material).Particularly, when the end of hollow material is engaged with each other, by Complex, accordingly, it is capable to significantly save operation routine in the operation arranging back of the body connection member.

On the other hand, conventionally, there is known double face slab that is two pieces of metallic plates are overlapping and that constitute.Double-deck Panel is used as the structure of rolling stock, aircraft, ship, civil construction thing etc..Such as patent documentation 2 Described, double face slab includes outside plate, inner panel and the support plate being folded between outside plate and inner panel.This Outward, when being engaged with each other by double face slab, make outside plate end and the outside plate end of adjacent double face slab Docking, inner panel end are docked with inner panel end, after forming the assembly of double face slab, use and rotate Partial frictional stirring after docking is engaged by instrument.

Prior art literature

Patent documentation

Patent documentation 1: No. 2712838 publication of Japanese Patent Laid

Patent documentation 2: Japanese Patent Laid-Open 2008-272768 publication

Summary of the invention

Invent technical problem to be solved

But, in the friction-stir using twin shaft shoulder stirring-head type instrument engages, ideal It is to engage while the center alignment of the short transverse of the axial centre with metallic plate that make pin, But, metallic plate can deform because of frictional heat sometimes.Once metallic plate becomes because of frictional heat Shape, then the center sold just with the center alignment of metallic plate, and cannot cause joint bad.

If additionally, the distance between shaft shoulder portion is bigger than the thickness of metallic plate, then being moulded by friction-stir Property liquidation after metal be easily spilled over to the outside in shaft shoulder portion, accordingly, there exist easily to produce to engage and lack Fall into such problem.

Additionally, the outer peripheral face of the pin of twin shaft shoulder stirring-head type instrument is carved with helicla flute sometimes, but because of , there is shape on the decorative cover of metallic plate upon engagement in the difference of the scope that spiral fluted direction or quarter set The groove become becomes greatly or produces many such problems of burr on decorative cover.

Additionally, due to double face slab is thin and long hardware, therefore, make a pair double face slab The operation that outside plate carries out docking with inner panel with outside plate, inner panel accurately is the most difficult.Even if additionally, Use fixture to make it immovable by fixing for the assembly of double face slab, there is also and make throw move Double face slab such problem separated from one another when engaging.

The present invention completes in view of the above problems, and its technical problem is that providing a kind of is using double-shaft shoulder Portion's stirring head dummy instrument can suppress the generation of joint defect and can manage when engaging a pair metallic plate Carry out throw unit and the friction stirring connecting method engaged with thinking.Additionally, its technical problem exists In time being carved with helicla flute when the outer peripheral face of the pin at twin shaft shoulder stirring-head type instrument, it is possible to reduce at gold Belong to the burr produced on the decorative cover of plate, or the groove formed on decorative cover can be reduced.It addition, The technical problem of the present invention is to provide a kind of double face slab that can be engaged by double face slab ideally Assembly and the friction stirring connecting method of double face slab.

Solve the technical scheme that technical problem is used

In order to solve above-mentioned technical problem, the present invention provides the assembly of a kind of a pair double face slab, its Feature is, makes the hook portion being formed on the end of the outside plate of the above-mentioned double face slab of a side and is formed at separately Hook portion engaging on the end of the outside plate of the above-mentioned double face slab of one side, each above-mentioned hook portion has: thin-walled Portion, this thinner wall section is extended from the heavy section of above-mentioned outside plate；And extension, this extension is with upper State thinner wall section continuous, and stretch out along thickness of slab direction, make a pair above-mentioned extension engage with each other, will be formed The above-mentioned double face slab of the end face on the end of the inner panel of the above-mentioned double face slab of a side and the opposing party The end face docking of inner panel, and do not engage.

According to said structure, engaged with each other by the hook portion making outside plate, it becomes possible to double-deck when preventing from engaging Panel is separated from each other.If being also provided with hook portion at inner panel, then the operation of double face slab docking each other will Become difficulty, therefore, in the present invention, hook portion is not set at inner panel, only by end face is the most right Connect.Thereby, it is possible to make the operation of preparatory process docked by double face slab more laborsaving.

It addition, according to said structure, it is possible to simple structure, hook portion is set.

Additionally, it is preferable that, in the sidepiece shape of above-mentioned extension of the above-mentioned double face slab of a side Becoming to have and stretch out inclined plane, the above-mentioned heavy section at the above-mentioned double face slab of the opposing party is formed to be stretched with above-mentioned Go out the heavy wall inclined plane of plane-plane contact.

According to said structure, owing to inclined plane can be made to slide each other angularly, accordingly, it is capable to make dual-layer face Plate the most easily engages.

Additionally, it is preferable that, between above-mentioned outside plate and above-mentioned inner panel, it is folded with support plate, C (mm) will be set as from above-mentioned support plate to the length of above-mentioned end face, and by the thickness of slab of above-mentioned heavy section When being set as t (mm), meet c≤7.0 × t+18.5mm.

If the distance from support plate to end face is very big, then the deformation of the end side that there is component become big can Energy property, but according to said structure, the deformation of the end side of component diminishes.

The present invention also provides for the friction stirring connecting method of a kind of double face slab, by a pair double face slab End carries out friction-stir joint each other, it is characterized in that, including: preparatory process, at this preparatory process In, the hook portion on the end of the outside plate that will be formed in the above-mentioned double face slab of a side be formed at the opposing party Above-mentioned double face slab outside plate end on hook portion engaging, and will be formed in the above-mentioned double of a side The end face pair of the inner panel of the above-mentioned double face slab of the end face on the end of the inner panel of deck panels and the opposing party Connect, and do not engage；And bonding process, in this bonding process, block in above-mentioned preparatory process Holding section after conjunction and the docking section after docking carry out friction-stir joint.

According to above-mentioned joint method, engaged with each other by the hook portion making outside plate, it becomes possible to when preventing from engaging Double face slab is separated from each other.If being also provided with hook portion at inner panel, the operation meeting of double face slab docking each other Become difficulty, therefore, in the present invention, hook portion is not set at inner panel, and only by end face is docked ?.Thereby, it is possible to make the operation of preparatory process docked by double face slab more laborsaving.

Additionally, it is preferable that, in above-mentioned bonding process, after above-mentioned holding section is engaged, Again above-mentioned docking section is engaged.

From the viewpoint of bond strength, the most first which joint in holding section and junction surface is not all had Problematic, but according to above-mentioned method, it is possible to reduce the angular deformation each other of the metallic plate after joint.

Invention effect

Throw unit according to the present invention and friction stirring connecting method, it is possible to suppression joint defect Generation, and can engage ideally.Additionally, according to the assembly of the double face slab of the present invention and The friction stirring connecting method of double face slab, it is possible to ideally double face slab is engaged.

Accompanying drawing explanation

Fig. 1 is friction-stir device and the axonometric chart of hollow material representing embodiment 1.

Fig. 2 is the mated condition representing hollow material, wherein, before Fig. 2 (a) represents docking, and Fig. 2 B () represents docking after.

Fig. 3 is the axonometric chart of the friction-stir device representing embodiment 3, wherein, Fig. 3 (a) table Showing overall diagram, Fig. 3 (b) represents keeper, sliding axle and sliding members.

Fig. 4 is the I-I sectional view of Fig. 3.

Fig. 5 is the II-II sectional view of Fig. 3.

Fig. 6 is the side view of the twin shaft shoulder stirring-head type instrument representing embodiment 1.

Fig. 7 is the figure of the friction stirring connecting method representing embodiment 1, and wherein, Fig. 7 (a) is Sectional view, Fig. 7 (b) is the III-III end view drawing of Fig. 7 (a).

Fig. 8 is the side view of the twin shaft shoulder stirring-head type instrument representing embodiment 2.

Fig. 9 is the sectional view of the friction stirring connecting method representing embodiment 2.

Figure 10 (a) represents the first variation of friction stirring connecting method, and Figure 10 (b) represents friction Second variation of stirring joint method.

Figure 11 is the figure of the throw unit representing variation, and wherein, Figure 11 (a) is side section view Figure, Figure 11 (b) is the IV-IV sectional view of Figure 11 (a).

Figure 12 is the axonometric chart of the double face slab representing embodiment 3.

Figure 13 is the axonometric chart of the friction-stir device representing embodiment 3.

Figure 14 is the axonometric chart of the throw unit representing embodiment 3.

Figure 15 is the side view of the twin shaft shoulder stirring-head type instrument representing embodiment 3.

Figure 16 is the front view of the preparatory process of the friction stirring connecting method representing embodiment 3.

Figure 17 is the solid of the first bonding process of the friction stirring connecting method representing embodiment 3 Figure.

Figure 18 is the solid of the second bonding process of the friction stirring connecting method representing embodiment 3 Figure.

Figure 19 is the front view of the variation of the engaging form representing embodiment 3.

Figure 20 is the table of the combination representing the test body in embodiment 1.

Figure 21 is to represent in embodiment 1, the pass between the gap of test body H1 and the thickness at junction surface The figure of system.

Figure 22 is to represent in embodiment 1, the pass between the gap of test body H3 and the thickness at junction surface The figure of system.

Figure 23 is to represent in embodiment 1, affects between thickness and the gap of the metallic plate of bond quality The table of relation, it illustrates the situation of the thickness of the thickness=Re side of Ad side.

Figure 24 is the table representing the relation affected between the plate thickness of bond quality and gap, and it illustrates Make the thickness change of Ad side and by situation fixing for the thickness of Re side.

Figure 25 is the table representing the relation affected between the plate thickness of bond quality and gap, and it illustrates Situation about the thickness of Ad side being fixed and make the thickness of Re side change.

Figure 26 (a) is to represent in embodiment 1, the table of the relation between the thickness in gap and Cr portion, Figure 26 (b) is to represent in embodiment 1, the table of the relation between the thickness in gap and Ad portion.

Figure 27 (a) is to represent in embodiment 1, the table of the relation between the thickness in gap and Re portion, Figure 27 (b) is to represent in embodiment 1, the figure of the relation between gap and average thickness.

Figure 28 is to represent in example 2, affects between thickness and the gap of the metallic plate of bond quality The figure of relation, it illustrates the situation of the thickness of the thickness=Re side of Ad side.

Figure 29 is to represent in embodiment 1, and the distance between shaft shoulder portion is fixed as each twin shaft during 5.8mm The size of shoulder stirring head dummy instrument and the table of connecting state.

Figure 30 is to represent in example 2, and the distance between shaft shoulder portion is fixed as each twin shaft during 2.8mm The size of shoulder stirring head dummy instrument and the table of connecting state.

Figure 31 is to represent in reference example, and the distance between shaft shoulder portion is fixed as each twin shaft during 11.5mm The size of shoulder stirring head dummy instrument and the table of connecting state.

Figure 32 is to represent in embodiment 3, and the impact that the difference of height of metallic plate is brought by screw thread ratio is (right The gap meeting portion is 0mm) figure.

Figure 33 is to represent in embodiment 3, and the impact that the difference of height of metallic plate is brought by screw thread ratio is (right The gap meeting portion is 1.5mm) figure.

Figure 34 is to represent in embodiment 3, in the case of the gap difference of docking section, condition A The figure in the plastification region of metallic plate.

Figure 35 is to represent in embodiment 3, in the case of the gap difference of docking section, condition B The figure in the plastification region of metallic plate.

Figure 36 is to represent in embodiment 3, in the case of the gap difference of docking section, condition C The figure in the plastification region of metallic plate.

Figure 37 is to represent in embodiment 3, in the case of the gap difference of docking section, condition D The figure in the plastification region of metallic plate.

Figure 38 is to represent in embodiment 3, in the case of the gap difference of docking section, condition E The figure in the plastification region of metallic plate.

Figure 39 is the table after the result of embodiment 3 being collected.

Figure 40 is the table after twin shaft shoulder stirring-head type instrument being made to collect towards situation during anticlockwise.

Figure 41 is engaging form or the front view of docking form representing embodiment 4, wherein, Figure 41 A () represents type I, Figure 41 (b) represents Type II, and Figure 41 (c) represents type-iii.

Figure 42 is the figure of the result of the angular deformation of type I representing embodiment 4.

Figure 43 is the figure of the result of the angular deformation of the Type II representing embodiment 4.

Figure 44 is the figure of the result of the angular deformation of the type-iii representing embodiment 4.

Figure 45 is by the direction of rotation of twin shaft shoulder stirring-head type instrument of embodiment 4, spiral fluted volume Table after direction, engaging form collect.

Figure 46 is intended to indicate that the figure of embodiment 6, and Figure 46 (a) represents body to be tested, Figure 46 (b) It it is the table after each condition is collected.

Figure 47 is the figure of the thickness of slab a representing embodiment 6 and the incidence relation of length c.

Detailed description of the invention

[embodiment 1]

Hereinafter, referring to the drawings, embodiments of the present invention are described in detail.As it is shown in figure 1, The friction-stir device 1 of present embodiment is that the docking section N to a pair metallic plate after docking is carried out The device that friction-stir engages.Twin shaft shoulder stirring-head type is installed in the front end of friction-stir device 1 Instrument 5.First, a pair metallic plate to be engaged is illustrated.In explanation upper and lower, front, Afterwards, the left and right direction of arrow according to Fig. 1.

As shown in Fig. 2 (a), in the present embodiment, exemplified with by hollow material 100A and hollow The situation that section bar 100B engages.Hollow material 100A is the extrded material of aluminium alloy, and is to have The strip component of the hollow bulb 100a of rectangular in cross-section.Hollow material 100A has and includes hollow bulb 100a Main part 101, from the left surface upper and lower side of main part 101 respectively towards left side (hollow material 100B Side) plate-shaped end 102,103 that stretches out.

Main part 101 is made up of four face materials 104,105,106,107, and its cross section is formed as square Shape.Plate-shaped end 102,103 is plate-shaped, and is perpendicular to face material 105.Plate-shaped end 102,103 A length of material 104 of left and right directions half about.Additionally, the thickness of plate-shaped end 102,103 Spend identical with the thickness of face material 104,105,106,107.Plate-shaped end 102,103 is suitable The position of " metallic plate " in claims.

Hollow material 100B is to have and the hardware of hollow material 100A same shape.Hollow type The symbol that material 100B mark is identical with hollow material 100A, and detailed.

When hollow material 100A docks with hollow material 100B, make the tabular end of hollow material 100A Portion 102,103 docks with the plate-shaped end 102,103 of hollow material 100B respectively.In more detail, Make the plate-shaped end of the end face 102a and hollow material 100B of the plate-shaped end 102 of hollow material 100A 102 end face 102a docking, make hollow material 100A plate-shaped end 103 end face 103a with in The end face 103a docking of the plate-shaped end 103 of casement material 100B.As shown in Fig. 2 (b), in making When casement material 100A docks with hollow material 100B, the center of the short transverse of end face 102a, 102a Overlap each other, and, each upper surface flush of plate-shaped end 102,102, plate-shaped end 102,102 Each lower surface flush.

As shown in Fig. 2 (b), end face 102a and end face 102a, end face 103a and end face 103a will be made Part after docking is referred to as " docking section N ".When being engaged by docking section N, preferably make end face 102a and end face 102a are in close contact, but sometimes because of the tolerance of hollow material 100A, 100B or connect Frictional heat during conjunction, makes plate-shaped end 102,102 deform, and at end face 102a and end face 102a Between produce tiny gap.Docking section N be include producing between end face 102a and end face 102a tiny The situation in gap is in interior concept.

It addition, in the present embodiment, exemplified with using the plate-shaped end of hollow material as to be engaged Object, but object to be engaged is by can the metal of friction-stir be formed, as long as plate-shaped structure Part, is not particularly limited.

<friction-stir device>

As it is shown on figure 3, friction-stir device 1 is mainly by chuck portion 1a be fixed in chuck portion 1a The throw unit 2 in portion is constituted.As shown in Figure 4, chuck portion 1a is the cylindric structure including flange Part, and use screw B1 to be connected with main body D of friction-stir device 1.Chuck portion 1a is to pass through The position that the driving of friction-stir device 1 rotates and pivots.Inner circumferential at chuck portion 1a is formed Barrel surface 1b.

As shown in Figure 4, throw unit 2 is by keeper 3, sliding axle 4, twin shaft shoulder stirring-head Type instrument 5 and sliding members 6 are constituted.Throw unit 2 can be relative to the 1a mounting or dismounting of chuck portion.

Keeper 3 is to be built-in with sliding axle 4 and be fixed on the component within chuck portion 1a.Keeper 3 Cylindrically.Outer surface at keeper 3 is formed along the most extended the putting down of above-below direction Smooth 3a, therefore, forms tiny gap between barrel surface 1b and tabular surface 3a.Bolt 2B, 2B From the outer surface of chuck portion 1a towards radially fastening, its front end abuts with tabular surface 3a.Thereby, Chuck portion 1a rotates integratedly with keeper 3.Additionally, as it is shown in figure 5, keeper 3 is formed with edge The keyway 3b of the most through elongated hole-shape.

As shown in Figure 4, cylindrically, it is arranged in the structure of hollow bulb of keeper 3 to sliding axle 4 Part.Sliding axle 4 can move in the vertical direction relative to keeper 3.As it is shown in figure 5, sliding The outer surface of axle 4 is formed with the key 4a being projected toward the outside.Key 4a engages with keyway 3b, thereby, protects Gripping member 3 rotates integratedly with sliding axle 4.

As shown in Figure 6, twin shaft shoulder stirring-head type instrument 5 is such as formed by tool steel, and with slip Axle 4 connects.Twin shaft shoulder stirring-head type instrument 5 and chuck portion 1a, keeper 3 and sliding axle 4 one Body ground is towards the rotation of both forward and reverse directions.Twin shaft shoulder stirring-head type instrument 5 have the first shaft shoulder portion 11, The lower section in the first shaft shoulder portion 11 across spaced second shaft shoulder portion 12, by the first shaft shoulder portion 11 with The pin 13 that second shaft shoulder portion 12 links.

First shaft shoulder portion 11 and the second shaft shoulder portion 12 are cylindrical, and have identical external diameter.Pin 13 Cylindrical, and the first shaft shoulder portion 11 is linked with the second shaft shoulder portion 12.Through second shaft shoulder of pin 13 Portion 12.The pin 13 in through second shaft shoulder portion 12 is fastened by nut in the lower end in the second shaft shoulder portion 12. Outer peripheral face at pin 13 is carved with top helicla flute 13a and lower part helical groove 13b.Top helicla flute 13a And the groove direction of lower part helical groove 13b carves and sets in the way of the direction winding that towards each other is contrary.

Top helicla flute 13a carves the centre of the short transverse set to pin 13 from the lower end of the first shoulder axle 11 Position.In the present embodiment, make twin shaft shoulder stirring-head type instrument 5 towards right rotation, therefore, on Portion helicla flute 13a is formed in the way of right-hand thread.It is to say, top helicla flute 13a is with from upper Mode downwardly toward right side winding is carved and is set.

On the other hand, lower part helical groove 13b is carved from the upper end of the second shoulder axle 12 and is set the height to pin 13 The centre position in direction.In the present embodiment, make twin shaft shoulder stirring-head type instrument 5 towards right rotation, Therefore, lower part helical groove 13b is formed in the way of left-hand thread.It is to say, lower part helical groove 13b It is to set towards carving in the way of left winding from the top down.

By top helicla flute 13a formed as discussed above and lower part helical groove 13b, rubbed stirring and Metal after Plastic Flow will be from the middle body of the short transverse of plate-shaped end 102 towards upper end side To or lower extreme direction somewhat shifted.It addition, the above-mentioned metal towards above-below direction move with because of twin shaft shoulder Stir the rotation of the pin 13 of head dummy instrument 5 and make metal movement in the circumferential direction compare, the most micro- Amount.

For spiral fluted coiling direction or carved the ratio set, as long as according to metallic plate to be engaged Decorative cover and the position relationship of twin shaft shoulder stirring-head type instrument 5, twin shaft shoulder stirring-head type instrument Direction of rotation etc. suitably set.In the present embodiment, though pin 13 is provided with right spiral shell quarter Stricture of vagina and left-hand thread both helicla flutes but it also may pin 13 is all carved the helicla flute setting right-hand screw, or It it is the helicla flute all carved and set left-hand screw.Additionally, in the present embodiment, though in the first shaft shoulder portion 11 Side is carved and is set right-hand thread, carves in the second side, shaft shoulder portion 12 and sets left-hand thread but it also may in the first shaft shoulder portion 11 Side is carved and is set left-hand thread, carves in the second side, shaft shoulder portion 12 and sets right-hand thread.

As shown in Figure 6, it may be desirable to, make between the shaft shoulder portion of twin shaft shoulder stirring-head type instrument 5 Distance Z (length of pin 13) and hollow material 100A plate-shaped end 102 thickness T-phase with or The thickness T of the plate-shaped end 102 than hollow material 100A is little.Such as, in the present embodiment, axle The little 0.2mm of thickness T of the plate-shaped end 102 than hollow material 100A of distance Z between shoulder.

It addition, the gap of end face 102a, 102a of docking section N (with reference to Fig. 2 (b)) can set In the case of being set to below 0.75mm, even if by the spacing of the thickness T of plate-shaped end 102 Yu shaft shoulder portion Z is set as identical, i.e. T-Z=0, it is also possible to obtain good engagement state.

Additionally, the gap of end face 102a, 102a of docking section N can be set as below 1.00mm In the case of, it may be desirable to, spacing Z of the thickness T of plate-shaped end 102 with shaft shoulder portion is set It is set to 0.2mm≤T-Z≤0.8mm.

The gap of end face 102a, 102a of docking section N can be set greater than 1.00mm and be In the case of below 1.75mm, it may be desirable to, by the thickness T of plate-shaped end 102 and shaft shoulder portion Spacing Z be set as 0.4mm≤T-Z≤0.8mm.

Additionally, it is preferable that, twin shaft shoulder stirring-head type instrument 5 is set to and makes first shaft shoulder After the square value of the external diameter X in portion 11 and the second shaft shoulder portion 12 is divided by the square value of the external diameter Y of pin 13 It is worth bigger than 2.0.According to above-mentioned twin shaft shoulder stirring-head type instrument 5, the first shaft shoulder portion 11 can be utilized The quantity of material discharged as burr is suppressed, accordingly, it is capable to reduce joint defect with the second shaft shoulder portion 12 Generation.

Additionally, it is preferable that, twin shaft shoulder stirring-head type instrument 5 is set to the first shaft shoulder portion 11 and second the square value of external diameter X in the shaft shoulder portion 12 external diameter Y that deducts pin 13 square value after obtain Value, and make the square value of the external diameter Y of pin 13 bigger than 0.2 divided by the value after value obtained above.Root According to above-mentioned twin shaft shoulder stirring-head type instrument 5, it is possible to when guaranteeing fully to engage, pin is relative at instrument The tensile resistence of the upper material resistance produced, accordingly, it is capable to the breakage of anti-shotpin 13.

Additionally, it is preferable that, twin shaft shoulder stirring-head type instrument 5 is set to and makes outside pin 13 The square value of footpath Y takes advantage of the value after distance Z between shaft shoulder portion bigger than 1.2 divided by the external diameter Y of pin 13.Root According to above-mentioned twin shaft shoulder stirring-head type instrument 5, it is possible to when substantially ensuring that joint, pin is relative to edge and instrument The fracture resistence force of the material resistance of the direction flowing that direct of travel is contrary, accordingly, it is capable to the breakage of anti-shotpin 13. For above-mentioned basis, will be recorded in an embodiment.

As shown in Fig. 3 (b) and Fig. 4, sliding members 6 is to make sliding axle 4 exist relative to keeper 3 The mechanism moved swimmingly on above-below direction.Sliding members 6 is by the inner surface being formed at keeper 3 Bearing groove 8 and in bearing groove 8 slide ball bearing 9 constitute.As shown in Fig. 3 (b), bearing Groove 8 the inner surface section bar of keeper 3 be side-looking be long round shape.The depth ratio ball bearing 9 of bearing groove 8 Diameter little.Ball bearing 9 is configured with multiple in the inside of bearing groove 8.One end of ball bearing 9 and cunning The outer surface sliding contact of moving axis 4, and the inner surface sliding contact of the other end and bearing groove 8.

It addition, the structure of sliding members 6 is not limited to the structure of present embodiment.Sliding members 6 It is configured to make keeper 3 and sliding axle 4 rotate integratedly, and makes sliding axle 4 relative to guarantor Gripping member 3 is the most mobile.For example, it is also possible to arrange axle in sliding axle 4 side Hold groove 8 and ball bearing 9.

Here, carry out friction-stir engage time, make because of frictional heat sometimes plate-shaped end 102, The temperature of 102 rises, and makes plate-shaped end 102,102 upward or lower section warpage.This embodiment party In the friction-stir device 1 of formula, owing to sliding axle 4 is formed to move relative to keeper 3, because of This, when plate-shaped end 102 is towards warpage above such as, twin shaft shoulder stirring-head type instrument 5 can be along with Above-mentioned warpage and move predetermined distance upward.On the other hand, in plate-shaped end 102 warpage downward Time, twin shaft shoulder stirring-head type instrument 5 can move predetermined distance downward along with above-mentioned warpage.Mat This, it is possible to suppress friction-stir engage in twin shaft shoulder stirring-head type instrument 5 relative to metallic plate Position offsets.

Then, the joint method of the twin shaft shoulder stirring-head type instrument 5 using embodiment 1 is carried out Explanation.

In the joint method of embodiment 1, twin shaft shoulder stirring-head type instrument 5 is made to transfer towards dextrorotation Engage.Specifically, in this joint method, carry out making hollow material abut each other is right Connect operation and twin shaft shoulder stirring-head type instrument 5 is inserted the bonding process of docking section N.Here, will Surface Sa is set as decorative cover.

In docking operation, as in figure 2 it is shown, make the plate of hollow material 100A and hollow material 100B Shape end 102 toward each other, makes end face 102a and end face 102a, end face 103a and end face 103a Face contacts.In more detail, so that the end face 102a of the midpoint of the end face 102a of a side and the opposing party The overlapping mode face contact in midpoint.After docking, can be entered along docking section N by modes such as welding Row is interim to be engaged, and makes hollow material 100A not separated with hollow material 100B.Make hollow material After 100A docks with hollow material 100B, both are fixed and makes it immovable.

In bonding process, first, in the outside of docking section N, make the center 13c of pin 13 be positioned at The position that the center Nc of docking section N is overlapping.Then, as it is shown in fig. 7, make the twin shaft shoulder of right rotation Stirring head dummy instrument 5 moves along docking section N.Docking is inserted at twin shaft shoulder stirring-head type instrument 5 After portion N, utilize the pin 13 of high speed rotating that the metal around pin 13 is carried out friction-stir, and make plate Integration between shape end 102.The track of pin 13 is formed plastification region W.

The joint method of present embodiment from the description above, though the friction engaged because of friction-stir Heat and make plate-shaped end (metallic plate) 102,102 warpage, twin shaft shoulder stirring-head type instrument 5 also can Move the most swimmingly along with above-mentioned warpage.Thereby, it is possible to the center 13c of suppression pin 13 Offset with the height and position of the center Nc of docking section N.Accordingly, it is capable to prevent bonding station from occurring partially Move.

Additionally, as in the present embodiment, by the shaft shoulder portion by twin shaft shoulder stirring-head type instrument 5 Between distance Z be set as below the thickness T of plate-shaped end 102, it becomes possible to the gold to Plastic Flow Belong to and pressing, accordingly, it is capable to prevent the metal of Plastic Flow because of friction-stir to be spilled over to the first axle Shoulder 11 and the outside in the second shaft shoulder portion 12.Thereby, it is possible to the generation of suppression joint defect.It addition, If the value of T-Z is more than 0.8, then can increase the load to friction-stir device 1, therefore, improper.

Additionally, according to joint method, rubbed stirring and the metal of liquidation are by the right-hand thread of pin 13 Lower part helical groove 13b of top helicla flute 13a and left-hand thread guides, and from plate-shaped end 102 Heart Nc is respectively towards Sa side, surface and back side Sb side shifting.Due to right-hand thread top helicla flute 13a with The ratio of more than 25% is formed, and therefore, above-mentioned helicla flute the metal caused moves and can make twin shaft shoulder Stirring head dummy instrument 5 promotes towards sliding axle 4 side (top) relative to plate-shaped end 102, can prevent Enter too far into surface (decorative cover) Sa.Thereby, can prevent decorative cover from producing groove V, or be Make generation groove V also can reduce the degree of depth of groove V.By preventing groove V from producing or reducing recessed The degree of depth of groove V, so that it may easily carry out making polish smoothened for surface (decorative cover) Sa process.

Additionally, in embodiment 1, top helicla flute 13a with the ratio of lower part helical groove 13b is 50:50, therefore, as shown in Fig. 7 (a), it is possible to make the amount of metal moved in the upper side and lower side impartial. Thereby, can further anti-shotpin 13 center 13c and docking section N center Nc position skew. It is provided with top helicla flute 13a and lower part helical groove 13b additionally, due to carve, stirs accordingly, it is capable to improve friction The stirring efficiency mixed.

When carrying out bonding process, it may be desirable to, such as utilizing the gas after supplying cooling Or while surface (decorative cover) Sa of plate-shaped end 102 is cooled down by the chiller of liquid etc. Engage.Thereby, it is possible to suppress the deformation of plate-shaped end 102 to make joining accuracy improve.It addition, Can also engage while the Sb side, the back side of plate-shaped end 102 is cooled down.

[embodiment 2]

In the joint method of embodiment 2, the spiral fluted structure of twin shaft shoulder stirring-head type instrument And direction of rotation is different from embodiment 1.In the explanation of embodiment 2, for embodiment 1 Identical point, detailed.

Fig. 8 is the side view of the twin shaft shoulder stirring-head type instrument representing embodiment 2.Such as Fig. 8 institute Showing, the outer peripheral face at the pin 13 of the twin shaft shoulder stirring-head type instrument 5A of embodiment 2 is carved and is provided with shape Become at the top helicla flute 13a of left-hand thread of the first half and be formed at the bottom spiral shell of right-hand thread of lower half Spin slot 13b.It is to say, top helicla flute 13a is to set towards carving in the way of left winding from the top down, under Portion helicla flute 13b is to set towards carving in the way of right winding from the top down.

It is preferable that, the distance (pin 13 between the shaft shoulder portion of twin shaft shoulder stirring-head type instrument 5A Length) Z is below the thickness of slab T of the plate-shaped end 102 of hollow material 100A.Such as, in this reality Executing in mode, the thickness of slab T of the plate-shaped end 102 than hollow material 100A of distance Z between shaft shoulder portion is little 0.4mm。

Then, the joint method of the twin shaft shoulder stirring-head type instrument 5A using embodiment 2 is carried out Explanation.

In the joint method of embodiment 2, as it is shown in figure 9, make twin shaft shoulder stirring-head type instrument 5A engages towards left-handed transferring.Specifically, in above-mentioned joint method, carry out making hollow material The docking operation abutted each other and the joint work that twin shaft shoulder stirring-head type instrument 5A is inserted docking section N Sequence.Here, surface Sa is set as decorative cover.Owing to docking operation is identical with embodiment 1, because of This, omit the description.

In bonding process, first, in the outside of docking section N, make the center 13c of pin 13 be positioned at The position that the center Nc of docking section N is overlapping.Then, as it is shown in figure 9, make the twin shaft shoulder of anticlockwise Stirring head dummy instrument 5A moves along docking section N.Twin shaft shoulder stirring-head type instrument 5A is being inserted After the N of docking section, utilize the pin 13 of high speed rotating that the metal around pin 13 is carried out friction-stir, and Plate-shaped end 102 is made to be integrated with each other.The track of pin 13 is formed plastification region W.

According to above-mentioned joint method, upper by the left-hand thread of pin 13 of rubbed stirring and the metal of liquidation Lower part helical groove 13b of portion helicla flute 13a and right-hand thread guides, and from the center of plate-shaped end 102 Nc is respectively towards Sa side, surface and back side Sb side shifting.Owing to the top helicla flute 13a of left-hand thread is with 25 The ratio of more than % is formed, and therefore, helicla flute the metal caused moves and can make twin shaft shoulder stirring-head Type instrument 5A promotes towards sliding axle 4 side (top) relative to plate-shaped end 102, can prevent too far Enter surface (decorative cover) Sa.Thereby, can prevent from producing groove V on decorative cover Sa, or Even if being formed with groove V also can reduce the degree of depth of groove V.

Additionally, in embodiment 2, top helicla flute 13a with the ratio of lower part helical groove 13b is 50:50, therefore, it is possible to make the amount of metal equalization of movement.Thereby, can be in further anti-shotpin 13 The position skew of the center Nc of heart 13c and docking section N.It is provided with top helicla flute 13a additionally, due to carve With lower part helical groove 13b, accordingly, it is capable to improve friction-stir stirring efficiency.

In variation 1, as shown in Figure 10 (a), at plate-shaped end 102A and plate-shaped end 102B Thickness this aspect different on, different from the embodiment described above.The thickness T1 of plate-shaped end 102B compares plate The thickness T2 of shape end 102A is thick.In variation 1, by plate-shaped end 102A and plate-shaped end 102B So that midpoint in the short transverse of plate-shaped end 102A with in the short transverse of plate-shaped end 102B The mode of midpoint overlap is docked.

In the docking operation of variation 1, make twin shaft shoulder stirring-head type instrument 5 towards right rotation, incite somebody to action Plate-shaped end 102B (metallic plate) configuration that the thickness of the docking section N of plate-shaped end 102B is bigger is expert at Enter the left side in direction.

When friction-stir, make throw towards in the case of right rotation, the metal of Plastic Flow There is the left side from instrument direct of travel and (shear side: the rotary speed of throw adds throw Translational speed side) towards the right side (flow side: the rotary speed of throw of instrument direct of travel Deduct the translational speed side of throw) trend that flows, thus, it is supposed that have between metallic plate Have gap, then above-mentioned gap can be filled by the metal shearing side.Thus, if shearing the hickness of metal plate of side Spend little, then there is the trend that metal is not enough and the central part thickness in plastification region after making joint diminishes. It addition, make throw towards in the case of anticlockwise, the right side of instrument direct of travel for shearing side, Left side is flow side.

In variation 1, by making the thickness T1 being positioned at the plate-shaped end 102B shearing side compare tabular The thickness T2 of end 102A is thick, it becomes possible to the metal of the central part eliminating plastification region W is not enough, And make joint more preferable.

In variation 2, as shown in Figure 10 (b), at plate-shaped end 102C and plate-shaped end 102D Thickness this aspect different on, different from the embodiment described above.The thickness T1 of plate-shaped end 102C compares plate The thickness T2 of shape end 102D is thick.In variation 2, by plate-shaped end 102C and plate-shaped end 102D So that midpoint in the short transverse of plate-shaped end 102C with in the short transverse of plate-shaped end 102D The mode of midpoint overlap is docked.

In the docking operation of variation 2, make twin shaft shoulder stirring-head type instrument 5 towards anticlockwise, incite somebody to action Plate-shaped end 102C (metallic plate) configuration that the thickness of the docking section N of plate-shaped end 102C is bigger is expert at Enter the right side in direction.

In variation 2, utilize the principle identical with variation 1, make to be positioned at the tabular end shearing side The thickness T1 of the portion 102C thickness T2 than plate-shaped end 102D is thick, it becomes possible to eliminate plastification region W The metal of central part not enough, and make joint more preferable.

As shown in Figure 11 (a), Figure 11 (b), the throw unit of variation 3 includes keeper 50, sliding axle 51, sliding members 52 and twin shaft shoulder stirring-head type instrument 5.Mainly keeper 50 Different with the first embodiment with the structure of sliding axle 51.

Keeper 50 is made up of with the collar part 54 being formed at lower end, main body cylinder portion 53 main body cylinder portion 53. Main body cylinder portion 53 is cylindrically.As shown in Figure 11 (b), the inner surface in main body cylinder portion 53 is formed Raised line 53a, 53a prominent towards inner side.Raised line 53a, 53a are formed on relative position.Raised line In the cross section of 53a is substantially semi-circular shape, and the length range in the short transverse in main body cylinder portion 53 Formed.

The cross section of collar part 54 is L-shaped, overlooks in the form of a ring, and with the lower termination in main body cylinder portion 53 Close.Collar part 54 includes the limiting section 54a stretched out than the inner surface in main body cylinder portion 53 more towards inner side.

Sliding axle 51 include large-diameter portion 55, the minor diameter part 56 being arranged on the bottom of large-diameter portion 55, by greatly The stage portion 57 that footpath portion 55 and minor diameter part 56 are formed.As shown in Figure 11 (b), at large-diameter portion 55 Outer surface is formed with recessed bar 55a, 55a corresponding with raised line 53a.Recessed bar 55a has and raised line 53a Formed in same shape, and the length range in the short transverse of large-diameter portion 55.

Sliding members 52 has and embodiment 1 same structure, as shown in Figure 11 (b), There is bearing groove 52a and ball bearing 52b.Sliding members 52 makes sliding axle 51 relative to keeper 50 Move the most swimmingly.

By the raised line 53a of keeper 50 is engaged with the recessed bar 55a of sliding axle 51, can not only permit Permitted movement in the axial direction, and keeper 50 can be made to rotate integratedly with sliding axle 51.Due to convex In the total length of the short transverse that bar 53a is formed at keeper 50, accordingly, it is capable to increase sliding axle 51 Displacement.Additionally, due to the total length of raised line 53a engages with recessed bar 55a, accordingly, it is capable to make slip Axle 51 stably moves.Additionally, due to raised line 53a and recessed bar 55a clips rotating shaft and is arranged on both sides, Accordingly, it is capable to more stably move.Additionally, by the stage portion 57 making limiting section 54a and sliding axle 51 Abut, just can move downward by limit slippage axle 51.

It addition, in embodiment 1, embodiment 2, variation 1～variation 3, as mentioned above Constitute throw unit, but be not limited to this.For example, it is also possible to make keeper and sliding axle Horizontal cross sectional geometry is polygon.

[embodiment 3]

Hereinafter, embodiment of the present invention 3 is illustrated.In embodiment 3, illustrate bilayer Panel carries out situation about engaging.Up, down, left, right, before and after in description of the present embodiment depends on Arrow according to Figure 12.

As shown in figure 12, double face slab 201 is metal slim strip component, and it is mainly by outside plate 202, inner panel 203, support plate 204,204 are constituted.Each support plate 204 is perpendicular to outside plate 202 and interior Plate 203.By in the lateral direction multiple double face slabs 201 being engaged, function as such as rolling stock, The structure of aircraft, boats and ships, civil construction thing etc..The manufacture method of double face slab 201 is the most especially Restriction, but, in the present embodiment, double face slab 201 is shape by the way of pressing shapes Become.As long as the metal of the material energy friction-stir of double face slab 201, it is not particularly limited, But in the present embodiment, use aluminium alloy.

Outside plate 202 is by central part 205, from the central part 205 right side tabular end extended towards right side Portion 210 and constituting from the left side plate-shaped end 220 that central part 205 is extended towards left side.

Right side plate-shaped end 210 is covered by first outside plate heavy section the 211, first hook portion 212 and first Portion's (Japanese: the first meat Sheng portion) 213 is constituted.First outside plate heavy section 211 is perpendicular to support plate 204, And it is extended towards right side.First hook portion 212 is in hook-shaped, and it is by extended first thin towards right side Wall portion 214 and the first extension 215 extended perpendicularly out from the first thinner wall section 214 are constituted.First thin-walled The thickness in portion 214 is about 1/3rd of the first outside plate heavy section 211.

First extension 215 stretches out towards inner panel 203 side from the front end of the first thinner wall section 214.First The sidepiece of extension 215 be formed with along with towards inner panel 203 side just the closer to the side of support plate 204 The first of formula inclination stretches out inclined plane 216.First covering part 213 be from the first outside plate heavy section 211, The upper surface of the first thinner wall section 214 and the first extension 215 highlights certain thickness upward and is formed at Position on heavy wall.

Left side plate-shaped end 220 is main by second outside plate heavy section the 221, second hook portion 222 and second Covering part 223 is constituted.Second outside plate heavy section 221 is perpendicular to support plate 204, and sets towards left side extension Put.Second hook portion 222 is in hook-shaped, and it is by the second thinner wall section 224 extended towards left side with relative to The second extension 225 that two thinner wall section 224 extend vertically out is constituted.The thickness of the second thinner wall section 224 It is about 1/3rd of the second outside plate heavy section 221.

Second extension 225 is stretched from the front end of the second thinner wall section 224 towards the side contrary with inner panel 203 Go out.Left end at the second outside plate heavy section 221 be formed with along with towards inner panel 203 side just away from The second heavy section inclined plane 226 that the mode of board 204 tilts.Second heavy section inclined plane 226 and One to stretch out the angle of inclination of inclined plane 216 identical.Second covering part 223 is from the second outside plate heavy section The upper surface of 221 highlights certain thickness the position being formed on heavy wall upward.

Inner panel 203 is by central part 206, from the central part 206 right side tabular end extended towards right side Portion 230, constitute from the left side plate-shaped end 240 that central part 206 is extended towards left side.

Right side plate-shaped end 230 is by first inner panel heavy section the 231, first covering part the 232, first end face 233 are constituted.First inner panel heavy section 231 is perpendicular to support plate 204, and extended towards right side.The One covering part 232 is that the lower surface from the front of the first inner panel heavy section 231 highlights downward, and Become the position of heavy wall.

Left side plate-shaped end 240 is by second inner panel heavy section the 241, second covering part the 242, second end face 243 are constituted.Second inner panel heavy section 241 is perpendicular to support plate 204, and extended towards left side.The Two covering part 242 are that the lower surface from the front of the second inner panel heavy section 241 highlights downward, and Become the position of heavy wall.

Then, the friction-stir device used in the present embodiment is illustrated.Such as Figure 13, figure Shown in 14, friction-stir device 261 is by chuck portion 261a, the rotation that is fixed on chuck portion 261a Tool unit 262 is constituted.In the same manner as embodiment 1, chuck portion 261a is stirred with friction by bolt The main body (not shown) mixing device 261 engages.

Throw unit 262 is by keeper 263, sliding axle 264, twin shaft shoulder stirring-head type instrument 265 and not shown sliding members constitute.

As shown in figure 14, keeper 263 is to be built-in with sliding axle 264 and be arranged on chuck portion 261a The component of inside.Keeper 263 is cylindrically.It is formed in the radial direction at keeper 263 The keyway 263b of through elongated hole-shape.

As shown in figure 14, cylindrically, it is inserted into the hollow bulb of keeper 263 to sliding axle 264 In component.Sliding axle 264 can move in the vertical direction relative to keeper 263.At sliding axle It is formed on the outer surface of 264 towards key 264a protruding outside.By making key 264a and keyway 263b Engaging, thereby, so that it may make keeper 263 rotate integratedly with sliding axle 264.

As shown in figure 15, twin shaft shoulder stirring-head type instrument 265 is by first shaft shoulder portion the 252, second axle Shoulder 253 and the pin 254 being arranged between the first shaft shoulder portion 252 and the second shaft shoulder portion 253 are constituted. First the 252, second shaft shoulder portion 253 of shaft shoulder portion, pin 254 is all in generally a cylindrical shape, and is coaxially disposed. Twin shaft shoulder stirring-head type instrument 265 is by making pin 254 mobile junction surface while high speed rotating Point, carry out the instrument of friction-stir joint.

First shaft shoulder portion 252 includes large-diameter portion 252a, tapering 252b and lower surface 252c.Tapering 252b The most gradually undergauge.Although not shown, the lower surface 252c but in the first shaft shoulder portion 252 is around pin 254 are formed around overlooking the depressed part in swirl shape.

Second shaft shoulder portion 253 is formed as the structure at outer surface with groove.Second shaft shoulder portion 253 includes Large-diameter portion 253a, tapering 253b and upper surface 253c.Tapering 253b the most gradually undergauge.Greatly The external diameter Y1 of the footpath portion 253a external diameter X1 than large-diameter portion 252a is little.Additionally, upper surface 253c's is straight The diameter Y2 of footpath Y2 and lower surface 252c is identical.

Outer surface at pin 254 is carved and is provided with the helicla flute 255 formed in the way of left-hand thread.Namely Saying, helicla flute 255 is to set towards carving in the way of anticlockwise from the top down.The external diameter U diameter group of pin 254 X2 and diameter Y2 is little.First shaft shoulder portion 252 is connected with sliding axle 264 by nut.

It is preferable that, the distance (pin 254 between the shaft shoulder portion of twin shaft shoulder stirring-head type instrument 265 Length) thickness of slab that is set as part to be engaged (is the first outside plate heavy wall in the present embodiment The total of the thickness of portion 211 and the first covering part 213) below.The degree of depth of the groove of helicla flute 255 or As long as spacing etc. are according to the material of the metallic plate of friction-stir to be carried out or part to be engaged Distance etc. between thickness of slab, shaft shoulder portion is appropriately configured.

Sliding members (not shown) is formed between keeper 263 and sliding axle 264, and can make sliding Moving axis 264 moves up and down swimmingly relative to keeper 263.Sliding members due to embodiment 1 Identical, therefore detailed.

In friction-stir device 261, owing to sliding axle 264 is formed to relative to keeper 263 Mobile, therefore, friction-stir device 261 is configured at metal plate to be engaged as stuck up upward Qu Shi, twin shaft shoulder stirring-head type instrument 265 can move predetermined distance upward along with above-mentioned warpage. On the other hand, friction-stir device 261 is configured to when metallic plate warpage downward to be engaged, Twin shaft shoulder stirring-head type instrument 265 can move predetermined distance downward along with above-mentioned warpage.Thereby, When friction-stir can be suppressed to engage, twin shaft shoulder stirring-head type instrument 265 is relative to the position of metallic plate Skew.

Then, the joint method of the double face slab of present embodiment is illustrated.Will here, illustrate The double face slab 201 of two pieces of same shapes carries out situation about engaging after being arranged side by side.In above-mentioned joint side In method, it is prepared operation and bonding process.

In preparatory process, as shown in figure 16, make double face slab 201,201 to fetching formation bilayer The assembly of panel, and fix this assembly and make it immovable.In explanation, by the bilayer of a side Panel is labeled as " 201A ", and the double face slab of the opposing party is labeled as " 201B ", for above-mentioned The each self-corresponding key element of double face slab, can add that symbol " A ", symbol " B " are distinguished.

In preparatory process, specifically, make first hook portion 212A of double face slab 201A with double-deck The second hook portion 222B engaging of panel 201B, and make the first end face 233A and the second end face 243B Docking.Thereby, the first hook portion 212A and the second hook portion 222B engage very close to each otherly, form engaging Portion M.On the other hand, after the first end face 233A and the second end face 243B docking, docking section N is formed. The position that extension 215A is engaged with extension 225B and the first end face 233A and the second end face 243B The extended line at the position of docking is referred to as " centrage C ".

After being prepared operation, the upper surface of the first covering part 213A and the second covering part 223B Upper surface flush, meanwhile, the lower surface of the first outside plate heavy section 211A and the second outside plate heavy section 221B Lower surface flush.Additionally, the upper surface of the first inner panel heavy section 231A and the second inner panel heavy section The lower surface of 241B flushes, meanwhile, and the lower surface of the first covering part 232A and the second covering part 242B Lower surface flush.After the assembly forming double face slab, use fixture to fix this assembly and make it Immovable.

In bonding process, as shown in figure 17, use twin shaft shoulder stirring-head type instrument 265 by card Conjunction portion M engage the first bonding process and by docking section N engage the second bonding process.

In the first bonding process, double face slab 201A is made to be arranged in the left side of direct of travel.Then, By on the Center-to-Center line C towards the pin 254 of the twin shaft shoulder stirring-head type instrument 265 of right rotation After the center alignment of the short transverse of holding section M, insert holding section M.Then, from front side towards rear side Friction-stir joint is carried out along holding section M.It addition, stir along twin shaft shoulder on the M of holding section The track that head dummy instrument 265 moves is formed with plastification region W1 (with reference to Figure 18).

In the second bonding process, as shown in figure 18, after the first bonding process terminates, by dual-layer face The assembly of plate turns over, and the assembly again fixing double face slab makes it immovable.Then, By on the Center-to-Center line C towards the pin 254 of the twin shaft shoulder stirring-head type instrument 265 of right rotation After the center alignment of the short transverse of docking section N, insert docking section N.Then, from front side towards rear side Friction-stir joint is carried out along docking section N.Along twin shaft shoulder stirring-head type work on the N of docking section The track that tool 265 moves is formed with plastification region (not shown).By above operation, outside plate 202A engages with outside plate 202B, and inner panel 203A engages with inner panel 203B.

The friction stirring connecting method of present embodiment from the description above, by making outside plate 202A's First hook portion 212A engages with second hook portion 222B of outside plate 202B, it is possible to prevent from simply rubbing Wipe double face slab 201A when stirring engages to separate with double face slab 201B.On the other hand, at inner panel 203A And inner panel 203B is not provided with hook portion, and make the first end face 233A and the second end face 243B docking, mat This, it is possible to the manufacture making preparatory process or double face slab is more laborsaving.At double face slab 201A, 201B it is In the case of strip, if inner panel 203A and inner panel 203B is also provided with hook portion, then can make the operation of engaging Become difficulty, but according to present embodiment, engaging operation can be made to become easy.

Additionally, in preparatory process, when making the first hook portion 212A and the engaging of the second hook portion 222B, First can be made to stretch out inclined plane 216A and the second main body inclined plane 226B block while sliding Close, therefore, make engaging operation become easy.Specifically, from placed double face slab 201B's When double face slab 201A is put down in top, as long as making first to stretch out inclined plane 216A and the inclination of the second main body Face 226B slides, it becomes possible to make first to stretch out inclined plane 216A and the engaging of the second main body inclined plane 226B.

Additionally, by arranging the first extension 215A and the second extension 225B, it becomes possible to simply Structure engage.Additionally, by arranging covering part (213A, 223B, 232A, 242B), Just it is prevented from metal when friction-stir engages not enough.In the present embodiment, it is provided with quarter at pin 254 The helicla flute 255 of left-hand thread, and make twin shaft shoulder stirring-head type instrument 265 while right rotation from Front side side shifting backwards, therefore, the metal after Plastic Flow is guided by helicla flute 255, and has court The trend that second shaft shoulder portion 253 moves.Thus, by by covering part (213A, 223B, 232A, 242B) it is arranged in outside plate 202A, 202B and inner panel 203A, 203B and the first shaft shoulder portion 252 Relative side, is just avoided that the metal of the first side, shaft shoulder portion 252 is not enough.

During additionally, formerly engaged by docking section N, double face slab 201A, 201B likely can separate, But in the bonding process of present embodiment, owing to first holding section M being engaged, therefore, it is possible to prevent When being engaged by docking section N, double face slab 201A, 201B divide out.

As long as it addition, the shape of double face slab 201A, 201B or engaging form both will not be separate Form, is not particularly limited.It is preferable that, as in the present embodiment, make dual-layer face The end of plate 201A, 201B flushes, and very close to each other engages.In addition it is also possible to it is double at one The two ends of the outside plate 202 of deck panels form the component being provided with the first hook portion 212,212, another pair The two ends of the outside plate 202 of deck panels form the component being provided with the second hook portion 222,222, and by above-mentioned double Deck panels carries out engaging and engaging after being alternately arranged side by side.Further, it is also possible to as shown in figure 19, is made The sidepiece of one extension 215A and the second extension 225B is the shape being not provided with tilting.Additionally, In the present embodiment, though support plate 204 is vertically formed with outside plate 202 and inner panel 203, but also Can be to tilt.

Use the friction-stir device 1 (twin shaft shoulder stirring-head type instrument 5) of embodiment 1, carry out For the thickness of the metallic plate (plate-shaped end) to friction-stir joint to be carried out and metallic plate each other Gap what kind of engagement state brings affect the test investigated.As shown in figure 20, for institute The test body (materials A 6063-T5) of a pair metallic plate of friction-stir joint to be carried out so that it is thickness Change respectively and prepare test body H1～H19." Ad side " refers to twin shaft shoulder stirring-head type work The direction of rotation side identical with direct of travel of tool.It is to say, twin shaft shoulder stirring-head type instrument The left side of direct of travel is referred to during towards right rotation." Re side " refers to twin shaft shoulder stirring-head type instrument The side that direction of rotation is contrary with direct of travel.It is to say, twin shaft shoulder stirring-head type instrument is towards the right side The right side of direct of travel is referred to during rotation.

In test body H1～H7, make metal thickness identical in Ad side and Re side.In test body H8～ In H13, Ad side plate thickness is fixed as 6.0mm, makes Re side plate thickness change. In test body H14～H19, Re side plate thickness is fixed as 6.0mm, makes Re side metallic plate Thickness changes.

Gap between metallic plate changes 0.25mm between 0～2.0mm every time.Use in test The shaft shoulder portion external diameter of twin shaft shoulder stirring-head type instrument be (face contacted with metallic plate in shaft shoulder portion Diameter) it is set as that 20mm, pin external diameter are set as that 12mm, the distance between shaft shoulder portion are set as 5.8mm. The speed setting of twin shaft shoulder stirring-head type instrument is 800rpm, and translational speed is set as 600/min, Direction of rotation is set as towards right rotation.Additionally, as described in embodiment 1, above-mentioned twin shaft shoulder Stirring head dummy instrument is that the height and position of twin shaft shoulder stirring-head type instrument can be along with the warpage of metallic plate The form changed.After carrying out friction-stir joint, from X-ray penetration test and cross section micro-group Knit and judge bond quality.

Figure 21 is to represent in embodiment 1, the pass between the gap of test body H1 and the thickness at junction surface The figure of system.Figure 22 is to represent in embodiment 1, between the gap of test body H3 and the thickness at junction surface The figure of relation.The junction surface of embodiment 1 is and the plastification region W identical meanings in embodiment. Additionally, " the Ad portion ", " Cr portion ", " Re portion " at the junction surface of embodiment 1 represents Fig. 7 (b) The shown Ad portion at junction surface (plastification region W), central part, each position in Re portion.

As shown in figure 21, when the thickness of metallic plate is the most all set as that 6.0mm engages, If gap less than 0.75mm, Ad portion, Cr portion, Re portion the minimizing of thickness the least, if but gap For more than 0.75mm, along with gap increases, Ad portion, Cr portion, the thickness in Re portion all reduce.Once Gap is more than 1.2mm, then the thickness at junction surface produces joint defect less than 5.8mm.

As shown in figure 22, when the thickness of metallic plate is the most all set as that 6.4mm engages, If gap less than 0.75mm, Ad portion, Cr portion, Re portion the minimizing of thickness the least.If gap exists 0.75～1.75mm, although Ad portion, Cr portion, the thickness in Re portion all can reduce, but not produce joint Defect.Once gap reaches 2.0mm, then the thickness at junction surface can significantly decrease and produce joint defect.

Knowable to Figure 21 and Figure 22, if the thickness in the Cr portion at junction surface is below 5.8mm, then can produce Raw joint defect.Even if it is to say, there is gap each other in metallic plate, as long as being come by Plastic Flow Supply metal, so that the thickness in the Cr portion at junction surface will not be less than identical with the distance between shaft shoulder portion 5.8mm, it is possible to intactly engage.As known from the above, need to set engaging condition, so that junction surface The thickness in (plastification region) is more than the distance between shaft shoulder portion.

Figure 23 is to represent in embodiment 1, affects the pass between the plate thickness of bond quality and gap The table of system, it illustrates the situation of the thickness of the thickness=Re side of Ad side.In the drawings, "○" represents The situation that connecting state is good, "×" represents the situation that connecting state is bad.

According to Figure 23, even if gap increases, as long as metallic plate also increases, the most still have joint shape The situation that condition is good.If however, it is possible between the distance known between the thickness of metallic plate and shaft shoulder portion Difference is more than 0.8mm (in the present embodiment, the thickness of metallic plate is bigger than 6.6mm), then between shaft shoulder portion The interior buckling produced is big, and makes the life-span of instrument be remarkably decreased.

Additionally, according to Figure 23, the distance between shaft shoulder portion is 5.8mm, the gap between metallic plate is When 0～below 0.75mm, as long as the thickness of metallic plate is 5.8～6.6mm, then connecting state is good. As long as it is to say, distance Z between the thickness T of metallic plate and shaft shoulder portion is set to 0≤T-Z≤ 0.8mm, then connecting state is good.

In the case of T-Z value is less than 0, say, that distance Z when between shaft shoulder portion is than tabular end When the thickness T in portion 102 is big, the metal after Plastic Flow is easily from the first shaft shoulder portion 11 and the second axle Shoulder 12 (with reference to Fig. 7 (a)) overflows, therefore, and the density fall of junction surface (plastification region W) Low.Thereby, the probability that joint defect produces improves.Even if the gap that metallic plate is to each other be 0～ 0.75mm, also can make the temperature of metallic plate rise because of the frictional heat of friction-stir joint, and because of metal Plate expands and makes gap disappear, it is therefore contemplated that connecting state is the best.

Additionally, according to Figure 23, the distance between shaft shoulder portion is 5.8mm, metallic plate each other between When gap is 0～below 1.0mm, as long as the thickness of metallic plate is 6.0～6.6mm, then connecting state is good. As long as it is to say, it is known that distance Z between the thickness T of metallic plate and shaft shoulder portion being set to 0.2 ≤ T-Z≤0.8mm, then connecting state is good.If T-Z value is less than 0.2mm, then Plastic Flow After metal easily overflow from the first shaft shoulder portion 11 and the second shaft shoulder portion 12, therefore, junction surface close Degree reduces.Thereby, the probability that joint defect produces improves.

Additionally, according to Figure 23, the distance between shaft shoulder portion is 5.8mm, the gap between metallic plate For more than 1.0mm and when being below 1.75mm, as long as the thickness of metallic plate is 6.2～6.6mm, then connecing Close in order.As long as it is to say, it is known that by between the thickness T of metallic plate and shaft shoulder portion away from Be set to 0.4≤T-Z≤0.8mm from Z, then connecting state is good.If T-Z value is less than 0.4mm, Then the metal after Plastic Flow easily overflows from the first shaft shoulder portion 11 and the second shaft shoulder portion 12, therefore, The density at junction surface reduces.Thereby, the probability that joint defect produces improves.

According to Figure 23, the distance between shaft shoulder portion is 5.8mm, and metallic plate gap each other is big In 1.75mm and when being below 2.00mm, as long as the thickness of metallic plate is 6.6mm, then connecting state is good Good.As long as it is to say, it is known that the thickness T of metallic plate and spacing Z in shaft shoulder portion being set to T If-Z=0.8mm, then connecting state is good.If T-Z value is less than 0.8mm, then due to plasticity stream Metal after dynamicization easily overflows, therefore from the first shaft shoulder portion 11 and the second shaft shoulder portion 12 so that connect The density in conjunction portion reduces.Thereby, the probability that joint defect produces improves.

Figure 24 is the table representing the relation between the thickness of the metallic plate affecting bond quality and gap, and it shows The situation that the thickness having gone out to make Ad side changes and fixed by the thickness of Re side.Figure 25 is to represent that impact connects The table of the relation between the thickness of the metallic plate of conjunction quality and gap, it illustrates and fixed by the thickness of Ad side And make the situation that the thickness of Rd side changes.

In the test of Figure 24, the thickness of Re side is fixed as 6.0mm, and makes the thickness of Ad side fit Work as change, carry out friction-stir joint.In the test of Figure 25, the thickness of Ad side is fixed as 6.2mm, and make the thickness of Re side suitably change, carry out friction-stir joint.It is to say, In the test of Figure 32 and Figure 33, the thickness of the left and right of metallic plate to be docked is made to change, one The bond quality under different gap is observed on limit.

After being contrasted by Figure 24 and Figure 25, the good situation in Figure 24 is more.In other words, such as figure Shown in 32, the metallic plate of Re side is being fixed as 6.0mm, and is making the metallic plate of Ad side at 6.2mm More than in the case of change, the situation that connecting state is good is more.This is owing to making in embodiment 1 Twin shaft shoulder stirring-head type instrument is towards right rotation, and therefore, the metal after plastification flowing is easily from traveling The left side (Ad side) in direction is mobile towards right side (Re side), there are the feelings in gap to each other at metallic plate Under condition, the metal of Ad side can fill this gap.Therefore, if as the condition of Figure 25, traveling side is made The thickness of metallic plate to the left is less than the plate thickness on the right side of direct of travel, then junction surface central authorities Metal is not enough, and the probability making joint bad is higher.But, if as the condition of Figure 24, make Plate thickness on the left of direct of travel is bigger than the plate thickness on the right side of direct of travel, then can supplement and connect The metal of central authorities of conjunction portion is not enough, accordingly, it is capable to obtain good engagement state.

Above-mentioned result also can be confirmed from Figure 26 and Figure 27.Plot point " ◆ " represents test body H4 (thickness=6.6mm of the thickness of Ad side=6.6mm and Re side).Plot point " ■ " represents examination Test body H10 (thickness=6.6mm of the thickness of Ad side=6.0mm and Re side), plot point "●" table Show test body H16 (thickness=6.0mm of the thickness of Ad side=6.6mm and Re side).

As shown in Figure 26 (a), it is known that in the thickness in the Cr portion at junction surface, according to test body The order of H4, H16, H10 diminishes.If it is to say, it is known that the metallic plate of Ad side is than Re side Thin, then the Cr portion thickness at junction surface will diminish.

As shown in Figure 26 (b), it is known that in the thickness in the Ad portion at junction surface, test body H4, H10, H16 are about 5.8mm, and have reduced than the thickness before engaging.Particularly, seeing When examining test body H4, H16, it is known that thickness has considerable degree of minimizing.

As shown in Figure 27 (a), it is known that in the thickness in the Re portion at junction surface, test body H10, The thickness of H16 does not has the biggest difference, but the thickness of test body H4 is the biggest.If additionally, By Figure 26 (b) and Figure 27 (a) overall contrast, then understand the thickness in Re portion generally than Ad portion Thickness is big.

As shown in Figure 27 (b), it is known that the average thickness at junction surface by test body H10, H16, The order of H4 increases.

As shown in Figure 26, Figure 27, use test body H4, H16, compared with test body 10, can increase The thickness in big Cr portion.But, if using test body H4, although can increase the thickness at junction surface, but phase The probability raising answering ground that the interior buckling between shaft shoulder portion can be made big and to make reduce life tools.Therefore, logical Cross as test body H16, the thickness of the metallic plate of Ad side is set as the metallic plate than Re side Thickness is big, can not only make the intrinsic pressure reduction between shaft shoulder portion, and can increase the thickness in the Cr portion at junction surface Degree.

Use the friction-stir device 1 (twin shaft shoulder stirring-head type instrument 5) of embodiment 1, carry out For the metallic plate (plate-shaped end) to friction-stir joint to be carried out thickness and metallic plate each other Gap what kind of engagement state brings affect the test investigated.Metallic plate gap each other exists Change 0.25mm between 0～2.0mm every time.The twin shaft shoulder stirring-head type instrument used in test Shaft shoulder portion external diameter (diameter in the face contacted with metallic plate in shaft shoulder portion) is set as 10mm, outside pin Footpath is set as that 6mm, the distance between shaft shoulder portion are set as 2.8mm.Turning of twin shaft shoulder stirring-head type instrument Speed is set as that 2000rpm, translational speed are set as that 1000mm/min, direction of rotation are set as towards dextrorotation Turn.Additionally, as described in embodiment 1, above-mentioned twin shaft shoulder stirring-head type instrument is double-shaft shoulder The form that the height and position of portion's stirring head dummy instrument can change along with the warpage of metallic plate.Entering After row friction-stir engages, judge bond quality from X-ray penetration test and cross section micro-assembly robot.

For the test body (materials A 6063-T5) of the metallic plate of friction-stir joint to be carried out, Use Ad side identical with the plate thickness of Rd side, but thickness is between 3.0mm, 3.2mm, 3.4mm The test body changed.

Figure 28 is to represent in example 2, affects between thickness and the gap of the metallic plate of bond quality The figure of relation, it illustrates the situation of Ad side=Re side.In the drawings, "○" represents that connecting state is good Good situation, "×" represents the situation that connecting state is bad.

According to Figure 28, even if gap increases, as long as between the thickness of metallic plate is relative to shaft shoulder portion Distance Z also increases, and the most still has the situation that connecting state is good.If however, it is possible to knowing metallic plate Thickness and shaft shoulder portion between distance between difference more than 0.6mm (in the present embodiment, the thickness of metallic plate Bigger than 3.4mm), then the interior buckling produced between shaft shoulder portion is big, and makes the life-span of instrument be remarkably decreased.

Additionally, according to Figure 28, distance Z between shaft shoulder portion is 2.8mm, between metallic plate between When gap is below 0.75mm, as long as the thickness of metallic plate is 3.0～3.4mm, then connecting state is good. As long as it is to say, it is known that the thickness T of metallic plate and spacing Z in shaft shoulder portion being set to 0.2 ≤ T-Z≤0.6mm, then connecting state is good.If T-Z value is less than 0.2, then Plastic Flow Metal easily overflows from the first shaft shoulder portion 11 and the second shaft shoulder portion 12, and makes the density at junction surface reduce. Thereby, the probability that joint defect produces improves.If the gap between metallic plate is below 0.75mm, then Make the temperature of metallic plate increase because of the frictional heat of friction-stir joint, make gap because metallic plate expands Disappear, it is therefore contemplated that connecting state is the best.

Additionally, according to Figure 28, the distance between shaft shoulder portion is 2.8mm, metallic plate each other between When gap is more than 0.75mm and is below 1.50mm, as long as the thickness of metallic plate is 3.2～3.4mm, Then connecting state is good.As long as it is to say, it is known that by the thickness T of metallic plate and shaft shoulder portion Spacing Z is set to 0.4≤T-Z≤0.6mm, then connecting state is good.If T-Z value compares 0.4mm Little, then the metal after Plastic Flow easily overflows from the first shaft shoulder portion 11 and the second shaft shoulder portion 12, And make the density at junction surface reduce.Thereby, the probability that joint defect produces improves.

Additionally, according to Figure 28, the distance between shaft shoulder portion is 2.8mm, metallic plate gap each other For more than 1.50mm and when being below 1.75mm, as long as the thickness of metallic plate is 3.4mm, then engaging shape Condition is good.As long as it is to say, the thickness T of metallic plate and spacing Z in shaft shoulder portion being set to T-Z =0.6mm, then connecting state is good.

Additionally, according to Figure 28, if gap is 2.0mm, even if then the thickness of metallic plate is 3.4mm Also joint can be produced bad.

Figure 29 is to represent in embodiment 1, and the distance between shaft shoulder portion is fixed as each twin shaft during 5.8mm The size of shoulder stirring head dummy instrument and the table of connecting state.Figure 30 is to represent in example 2, will Distance between shaft shoulder portion is fixed as the size of each twin shaft shoulder stirring-head type instrument and joint shape during 2.8mm The table of condition.Figure 31 is to represent in reference example, the distance between shaft shoulder portion is fixed as during 11.5mm each The size of twin shaft shoulder stirring-head type instrument and the table of connecting state.At Figure 29, Figure 30, Tu31Zhong, Show that tensile resistence/material resistance, fracture resistence force/material resistance, material keep trend.

Tensile resistence/material resistance is by Y²/(X²-Y²) represent.It is to say, the first shaft shoulder portion The lower surface of 11 and the upper surface in the second shaft shoulder portion 12 when friction-stir because of by Plastic Flow after The pressing of metal, therefore, tensile stress acts on pin 13.Therefore, tensile resistence/material resistance Power uses the external diameter X's by the lower surface (upper surface in the second shaft shoulder portion 12) in the first shaft shoulder portion 11 Value (the X that square value obtains after deducting the square value of the external diameter Y of pin 13²-Y²), and by outside pin 13 The square value of footpath Y represents divided by the value after value obtained above.

Fracture resistence force/material resistance is by Y²/ YZ represents.It is to say, in twin shaft shoulder stirring-head type work Tool 5 is when making docking section N move, and effect has the power in the axially vertical direction with pin 13.Therefore, anti- Folding power/material resistance uses the square value of the external diameter of pin 13 divided by the cross section including axle of pin 13 Sectional area after value represent.

Material keeps trend by X²/Y²Represent.It is to say, when friction-stir, Plastic Flow After metal kept by the lower surface in the first shaft shoulder portion 11 and the upper surface in the second shaft shoulder portion 12.Therefore, Material keeps trend use to be removed by the square value of the external diameter X in the first shaft shoulder portion 11 (the second shaft shoulder portion 12) Represent with the value after the square value of the external diameter Y of pin 13.

After Figure 29, Figure 30, Figure 31 are analyzed, it is known that if material keeps trend (X²/Y²) Be less than 2.0, then joint defect easily produces, if bigger than 2.0, then joint defect will not produce. If material keeps trend (X²/Y²) be less than 2.0, then owing to the external diameter Y of pin 13 is relative to the first axle For the external diameter of shoulder 11 (the second shaft shoulder portion 12) the thickest, it is therefore contemplated that metal is carried out by The area in shaft shoulder portion of pressure diminishes, thus, it is impossible to fully to by the metal after friction-stir carry out by Pressure, metal will produce burr, and from the outside spilling in shaft shoulder portion.On the other hand, if material keeps Trend (X²/Y²) bigger than 2.0, then for the external diameter Y of pin 13, the first shaft shoulder portion 11 (the Two shaft shoulder portions 12) external diameter X big, therefore, it is possible to use two shaft shoulder portions fully to plastification stream Metal after Dong presses.Thereby, it is believed that joint defect is not easy to produce.

Additionally, after Figure 29, Figure 30, Figure 31 are analyzed, it is known that if tensile resistence/material resistance Power (Y²/(X²-Y²)) be less than 0.2, then pin is the most damaged.This is due to tensile resistence/material Resistance (Y²/(X²-Y²)) when being less than 0.2, pin external diameter Y diminishes relative to shaft shoulder portion external diameter X, It is therefore contemplated that the tensile resistence of pin comes relative to the material resistance produced in the axial direction when engaging Say deficiency, and make pin 13 easily snap off.If tension stress/material resistance (Y²/(X²-Y²)) ratio 0.2 Greatly, then it is believed that pin external diameter Y becomes big relative to shaft shoulder portion external diameter X, therefore, pin 13 is not easy to fracture.

Additionally, after Figure 29, Figure 30, Figure 31 are analyzed, it is known that if fracture resistence force/material resistance (Y²/ YZ) be less than 1.2, then pin 13 is the most damaged.This is due at fracture resistence force/material resistance (Y²/ YZ) when being less than 1.2, the external diameter Y of pin is relative to distance (length of the pin) Z between the shaft shoulder For less, it is therefore contemplated that pin is for along the direction contrary with instrument direct of travel when engaging The fracture resistence force of the material of flowing is not enough, and makes pin 13 easily snap off.If fracture resistence force/material resistance (Y²/YZ) More than 1.2, then pin external diameter Y is relatively big for distance (length of the pin) Z between shaft shoulder portion, because of This, pin 13 is not easy to fracture.

Additionally, after Figure 29, Figure 30, Figure 31 are analyzed, it is known that when tension stress/material resistance (Y²/(X²-Y²)) it is less than 0.2, or fracture resistence force/material resistance (Y²/ YZ) it is less than 1.2 Time, pin can occur breakage.But, as tension stress/material resistance (Y²/(X²-Y²)) more than 0.2 And fracture resistence force/material resistance (Y²/ YZ) more than 1.2 time, pin will not be damaged.Therefore, it can to obtain as Draw a conclusion: in order to when preventing from engaging, the pin of twin shaft shoulder stirring-head type instrument occurs breakage, ideal , the distance shape of pin being designed so that between shaft shoulder portion external diameter X, pin external diameter Y and shaft shoulder portion (is sold Length) Z simultaneously meet with following formula (1), (2).

Y²/(X²-Y²) ＞ 0.2 ... ... (1)

Y²/ YZ ＞ 1.2 ... ... ... ... (2)

In embodiment 3, twin shaft shoulder stirring-head type instrument is sold the spiral fluted ratio set quarter And spiral fluted direction of rotation on engage after metallic plate bring what kind of impact investigate.With reference to Fig. 7 A (), is set to the direction of rotation of twin shaft shoulder stirring-head type instrument and is viewed as towards the right side from sliding axle side Rotate.Additionally, make the top helicla flute 13a of right-hand thread and the ratio of lower part helical groove 13b of left-hand thread Example changes, and sets five kinds of conditions A～E, and carries out friction-stir joint.

In condition A, by lower part helical groove 13b of the top helicla flute 13a of right-hand thread Yu left-hand thread Ratio be set as 0:100 (not having right-hand thread).

In condition B, by lower part helical groove 13b of the top helicla flute 13a of right-hand thread Yu left-hand thread Ratio be set as 25:75.

In condition C, by lower part helical groove 13b of the top helicla flute 13a of right-hand thread Yu left-hand thread Ratio be set as 50:50.

In condition D, by lower part helical groove 13b of the top helicla flute 13a of right-hand thread Yu left-hand thread Ratio be set as 75:25.

In condition E, by lower part helical groove 13b of the top helicla flute 13a of right-hand thread Yu left-hand thread Ratio be set as 100:0 (not having left-hand thread).

In embodiment 3, the metallic plate (A6063 of the aluminium alloy that two boards thickness T is 6.2mm is prepared -T5), and two pieces of metallic plates are engaged.First shaft shoulder portion 11 of twin shaft shoulder stirring-head type instrument 5 And second shaft shoulder portion 12 external diameter X (diameter in the face contacted with metallic plate in shaft shoulder portion) set It is set as that 12mm, distance Z between shaft shoulder portion are set as 5.8mm for 20mm, the external diameter Y of pin 13.Spiral shell Spin slot depth-set is 0.81mm.The speed setting of twin shaft shoulder stirring-head type instrument 5 is 800rpm, Engaging speed is set as 600mm/min.Additionally, in each condition, in order to the pass between the N of docking section System investigates, after space change is 0mm, 1.25mm, 1.50mm, 1.75mm, 2.00mm, Test.

Figure 32 is to represent in embodiment 3, and the impact that the difference of height of metallic plate is brought by screw thread ratio is (right The gap meeting portion is 0mm) figure.Figure 33 is to represent in embodiment 3, and screw thread ratio is to metallic plate The figure of the impact (gap of docking section is 1.5mm) that difference of height brings.Difference of height is with the gold before engaging Belong on the basis of the surface of plate (benchmark=0), represent the height and position at each position after joint.At height Low difference on the occasion of time represent convexly, represent concavely (groove) during for negative value.

As shown in figure 33, use " ▲ " Re side equal table in condition A～E of surface Sa of representing Be shown as on the occasion of.It is to say, the Re side of surface Sa is the most convexly.

On the other hand, the Ad side of the surface Sa that use " ◆ " represents is expressed as the biggest in condition A Negative value.It is to say, in condition A, the Ad side of surface Sa is in the biggest concavity.Additionally, In the Ad side of the surface Sa using " ◆ " to represent, along with the increase of right-hand thread ratio, surface Sa's The depression of Ad side progressively reduces, in condition E convexly.

On the other hand, the Ad side of the back side Sb that use " ■ " represents is expressed as the biggest in condition A On the occasion of.It is to say, in condition A, the Ad side of back side Sb is in the biggest convex.Additionally, In the Ad side of the back side Sb using " ■ " to represent, along with the increase of right-hand thread ratio, back side Sb's The depression of Ad side is gradually increased, in condition D, E concavely.It is to say, use " ◆ " to represent The Ad side of surface Sa and the Ad side of back side Sb using " ■ " to represent, be in and right-hand thread Ratio is contrary relation.Additionally, use the Ad side of surface Sa that " ◆ " represent and use " ■ " Even the Ad side of the back side Sb represented is under condition C (50:50), also the most concavely.

After Figure 32 and Figure 33 is contrasted, it is known that even if the gap of docking section is 1.5mm, When the gap of docking section is 0mm, the trend of difference of height is the most also almost without change.It is known that Figure 33 Use " ▲ " the Re side of surface Sa that represents and the Re of the back side Sb to use "●" to represent The value of side is little compared with Figure 32 on the whole.

Figure 34 is to represent in embodiment 3, in the case of the gap difference of docking section, condition A The figure in the plastification region of metallic plate.Figure 35 is to represent in embodiment 3, docking section gap not In the case of Tong, the figure in the plastification region of the metallic plate of condition B.Figure 36 is to represent in embodiment 3 In, in the case of the gap difference of docking section, the figure in the plastification region of the metallic plate of condition C. Figure 37 is to represent in embodiment 3, in the case of the gap difference of docking section, and the metal of condition D The figure in the plastification region of plate.Figure 38 is to represent in embodiment 3, different in the gap of docking section In the case of, the figure in the plastification region of the metallic plate of condition E.The left hurdle of each figure in Figure 34～Figure 38 Representing and carried out the sectional view that the micro-assembly robot of plastification region W is observed, intermediate hurdles represent plastification region W The top view of surface (decorative cover) Sa side, right hurdle represents bowing of the Sb side, the back side of plastification region W View.

As shown in the left hurdle of Figure 34, in the case of condition A, in surface (decorative cover) Sa side shape Become to have the biggest groove V, but Sb side is formed without groove V overleaf.In the gap of docking section it is When 1.75mm, 2.00mm, Sa side, surface forms joint defect Q.Plastification region W is towards back side Sb Gradually expand.The lines of plastification region W is that left and right is asymmetrical.The Ad side of plastification region W Lines is more deeper than the lines of Re side.Additionally, in Figure 34, the burr P of the Sb side, the back side of metallic plate The burr P of specific surface Sa side is few.

As shown in the left hurdle of Figure 35, in the case of condition B, in surface (decorative cover) Sa side shape Become to have the groove V less than condition A, but Sb side does not has groove V overleaf.In the gap of docking section it is During 2.00mm, it is internally formed joint defect Q at metallic plate.The lines of plastification region W is left and right Asymmetrical.The lines of the Ad side of plastification region W is more deeper than the lines of Re side.By Figure 43's After the back side Sb of condition A of the back side Sb Yu Figure 42 of condition B contrasts, the burr P of condition B Produce more, and make rough surface.

As shown in the left hurdle of Figure 36, in the case of condition C, in surface (decorative cover) Sa side shape Becoming to have less groove V, Sb side is also formed with less groove V overleaf.Gap in docking section During for 2.00mm, it is internally formed joint defect Q at metallic plate.The upper and lower stricture of vagina of plastification region W Road is substantially symmetric, and the lines of left and right is substantially symmetric.By the surface Sa of the condition C of Figure 36 and figure After the surface Sa of condition B of 35 contrasts, almost without burr on the surface Sa of condition C. Additionally, on the back side Sb of condition C, the burr P of Re side produces much than the burr P of Ad side.

As shown in the left hurdle of Figure 37, in the case of condition D, do not have in surface (decorative cover) Sa side There is formation groove V, and Sb side forms less groove V overleaf.It is 2.00mm in the gap of docking section Time, it is internally formed joint defect Q at metallic plate.Additionally, the burr P specific surface Sa of back side Sb Burr P produce much.

As shown in the left hurdle of Figure 38, in the case of condition E, do not have in surface (decorative cover) Sa side There is formation groove V, and Sb side forms the biggest groove V overleaf.In the gap of docking section be 1.75mm, During 2.00mm, it is internally formed joint defect Q at metallic plate.Plastification region W towards back side Sb by Gradual change is narrow.Sb produces many burr P overleaf, does not the most produce burr P at surface Sa.

Figure 39 is the table after the result of embodiment 3 being collected.The symbol of each key element is directly with reference to embodiment party The symbol of formula 2.As shown in the schematic diagram of condition A of Figure 47, if arranging court in the range of 100% The left-hand thread of right rotation, then the metal of liquidation can be guided by helicla flute, and towards back side Sb side shifting. Movement because of above-mentioned metal so that the second shaft shoulder portion 12 of twin shaft shoulder stirring-head type instrument 5 is pressed Pressure, twin shaft shoulder stirring-head type instrument 5 (is carried on the back towards the side contrary with sliding axle 4 relative to metallic plate Sb side, face) mobile.Thereby, surface (dress can be entered too far into due to twin shaft shoulder stirring-head type instrument 5 Facing) Sa side, therefore, form the biggest groove V in Sa side, surface.

On the other hand, as shown in condition B of Figure 39～E, at the right-hand thread arranging more than 25% ratio In the case of part is used as top helicla flute 13a, the metal that the helicla flute of reason right-hand thread causes moves Dynamic, twin shaft shoulder stirring-head type instrument 5 will be made to be pressed towards sliding axle 4 side (top), thus It is prevented from twin shaft shoulder stirring-head type instrument and enters too far into the surface Sa (decorative cover) of metallic plate. Thereby, can prevent from producing groove V, even if or being formed with groove also can at surface Sa (decorative cover) Reduce the degree of depth of groove.Therefore, it is possible to what the metal sheet surface Sa that minimizing is after making joint smoothed It is time-consuming that polish processes.But, when in condition B, condition C, the gap of docking section is 2.00mm Time, and when in condition D, condition E, the gap of docking section is 1.75mm or 2.00mm, due to Create joint defect Q, be therefore not suitable for.If it is believed that this is owing to greatly will in the gap of docking section Cause the reason that the metal material of bonding part reduces.

It addition, such as slice part E is so, set the right-hand thread towards right rotation carving with the ratio of 100% Time, twin shaft shoulder stirring-head type instrument 5 moves upward relative to plate-shaped end 102, first shaft shoulder The height and position of the lower surface in portion 11 is positioned at the plate-shaped end 102 surface (decorative cover) before friction-stir The top of Sa, the height and position at the lower surface in the first shaft shoulder portion 11 stirs in friction with plate-shaped end 102 In the case of the gap between the Sa of surface before mixing is relatively big, the pressing of metal is the most abundant, but The height and position of the lower surface in the first shaft shoulder portion 11 and the plate-shaped end 102 surface Sa before friction-stir Between gap small in the case of, it is possible to press metal fully.

Additionally, the height and position at the lower surface in the first shaft shoulder portion 11 stirs in friction with plate-shaped end 102 In the case of the gap between the Sa of surface before mixing is small, before plastification region W is only than friction-stir Surface Sa highlights a little.But, by process smoothened for the surface Sa of plate-shaped end 102 due to Have only to align with the height of the surface Sa before friction-stir and prominent part cut, therefore, Polish processes and becomes easy.

In above-mentioned embodiment 1, top helicla flute 13a and lower part helical groove 13b are relative to the shaft shoulder Distance Z between portion is formed with the ratio of 50:50, but decorative cover is being set to surface Sa, and makes twin shaft Shoulder stirring head dummy instrument 5 is towards in the case of right rotation, it may be desirable to, make the first shaft shoulder portion 11 The top helicla flute 13a of the right-hand thread of side and the lower part helical groove of the left-hand thread of the second side, shaft shoulder portion 12 13b is formed with the ratio of 25:75～100:0 relative to distance Z between shaft shoulder portion.It is to say, The top helicla flute 13a of right-hand thread can also be formed as in the first side, shaft shoulder portion 11 relative to shaft shoulder portion Between distance Z-shaped become more than 25% part, and by whole for the part beyond the helicla flute 13a of top Lower part helical groove 13b as left-hand thread.Make the twin shaft shoulder stirring-head type instrument 5 feelings towards right rotation Under condition, it is also possible to be not provided with left-hand thread, and right-hand thread is set in the axial total length of pin 13.

Additionally, in embodiment 3, though Sa side, surface is set as decorative cover but it also may by the back side Sb side is set as decorative cover.In this case, with reference to Figure 39, by by twin shaft shoulder stirring-head type The direction of rotation of instrument 5, spiral fluted coiling direction set according to condition A, B, C, D, thereby, Can prevent back side Sb (decorative cover) side from producing groove V, even if or being formed with groove V also can reduce The degree of depth of groove V.

It is to say, make twin shaft shoulder stirring-head type instrument 5 towards while right rotation by rear side Sb In the case of being set as decorative cover, it may be desirable to, including: docking operation, in this docking operation In, make the end face of metallic plate abut each other；And bonding process, in this bonding process, make Two shaft shoulder portions 12 are relative with the decorative cover of metallic plate, and make the axial centre of pin 13 and the plate of metallic plate After the alignment of thick center, direction, the pin 13 of the twin shaft shoulder stirring-head type instrument 5 towards right rotation is made to move to Docking section N, carries out friction-stir joint, and distance Z between shaft shoulder portion is set as the thickness of slab of metallic plate Hereinafter, and form the helicla flute of left-hand thread in the second side, shaft shoulder portion 12 of the outer peripheral face of pin 13, and make The helicla flute of above-mentioned left-hand thread is formed with the ratio of more than 25% relative to distance Z between shaft shoulder portion.

According to above-mentioned joint method, the left-hand thread of the second side, shaft shoulder portion 12 with more than 25% ratio shape Becoming, therefore, the metal that the helicla flute of reason left-hand thread causes moves, and will make twin shaft shoulder stirring-head Type instrument 5 presses towards with sliding axle 4 opposite side (lower section) such that it is able to prevent twin shaft shoulder from stirring Mix head dummy instrument 5 and enter too far into the back side (decorative cover) Sb of metallic plate.Thereby, it is possible to prevent Decorative cover produces groove, even if or being formed with groove also can reduce the degree of depth of groove.

Figure 40 is the figure after making twin shaft shoulder stirring-head type instrument collect towards situation during anticlockwise.

In condition F, by lower part helical groove 13b of the top helicla flute 13a of left-hand thread Yu right-hand thread Ratio be set as 0:100 (not having left-hand thread).

In condition G, by lower part helical groove 13b of the top helicla flute 13a of left-hand thread Yu right-hand thread Ratio be set as 25:75.

In condition H, by lower part helical groove 13b of the top helicla flute 13a of left-hand thread Yu right-hand thread Ratio be set as 50:50.

In condition I, by lower part helical groove 13b of the top helicla flute 13a of left-hand thread Yu right-hand thread Ratio be set as 75:25.

In condition J, by lower part helical groove 13b of the top helicla flute 13a of left-hand thread Yu right-hand thread Ratio be set as 100:0 (not having right-hand thread).

As shown in Embodiment 2, when towards anticlockwise, use and be provided with left spiral shell at top helicla flute 13a Stricture of vagina, it is provided with the twin shaft shoulder stirring-head type instrument 5A of right-hand thread in lower part helical groove 13b.Make twin shaft When shoulder stirring head dummy instrument 5A is towards anticlockwise, due to the twin shaft shoulder stirring-head type with embodiment 1 The coiling direction of the screw thread of instrument 5 is different, therefore, can show same as in Example 3 in result Action effect.It is to say, as shown in condition G～condition J, because of friction-stir after liquidation After metal can be guided by the top helicla flute 13a of the left-hand thread of pin 13, towards the first shaft shoulder portion 11 sidesway Dynamic, and after being guided by the top helicla flute 13b of the right-hand thread of pin 13, towards the second shaft shoulder portion 12 sidesway Dynamic.Owing to left-hand thread is formed with the ratio of more than 25%, therefore, the helicla flute of reason left-hand thread causes Metal move so that twin shaft shoulder stirring-head type instrument 5A by towards sliding axle 4 side (top) press, It is thus possible to prevent twin shaft shoulder stirring-head type instrument 5A from entering too far into the surface (decorative cover) of metallic plate Sa.Thereby, can prevent from producing groove V, even if or being formed with groove V at surface (decorative cover) Sa Also the degree of depth of groove V can be reduced.Thereby, it is possible to reduce the surface Sa of the metallic plate after making joint It is time-consuming that smoothened polish processes.

It addition, such as slice part J is so, set the left-hand thread towards anticlockwise carving with the ratio of 100% Time, twin shaft shoulder stirring-head type instrument 5 moves upward relative to plate-shaped end 102, and makes first The height and position of the lower surface in shaft shoulder portion 11 is positioned at the plate-shaped end 102 surface Sa before friction-stir Top, the height and position of the lower surface in the first shaft shoulder portion 11 and plate-shaped end 102 are at friction-stir In the case of the front gap between the Sa of surface is relatively big, the pressing of metal will be abundant not, but The height and position of the lower surface in the first shaft shoulder portion 11 and the plate-shaped end 102 surface Sa before friction-stir Between gap small in the case of, just can fully metal be pressed.

The height and position of the lower surface in the first shaft shoulder portion 11 and plate-shaped end 102 are before friction-stir In the case of gap between the Sa of surface is small, plastification region W is only than the surface Sa before friction-stir Prominent a little.But, by process smoothened for the surface Sa of plate-shaped end 102 due to have only to The height of the surface Sa before friction-stir aligns and prominent part is cut, therefore, and polish Process becomes easy.

In above-mentioned embodiment 2, top helicla flute 13a and lower part helical groove 13b are relative to the shaft shoulder Distance Z between portion is formed with the ratio of 50:50, but decorative cover is being set to surface Sa, and makes twin shaft Shoulder stirring head dummy instrument 5 is towards in the case of anticlockwise, it may be desirable to, the first side, shaft shoulder portion 11 The top helicla flute 13a of left-hand thread and lower part helical groove 13b of right-hand thread of the second side, shaft shoulder portion 12 Formed with the ratio of 25:75～100:0 relative to distance Z between shaft shoulder portion.That is, it is possible to Left-hand thread top helicla flute 13a is formed as in the first side, shaft shoulder portion 11, relative between shaft shoulder portion Apart from Z-shaped become more than 25% part, and make the whole conduct of part beyond the helicla flute 13a of top Lower part helical groove 13b of right-hand thread.Make the twin shaft shoulder stirring-head type instrument 5 situation towards anticlockwise Under, it is also possible to being not provided with right-hand thread, the axial whole total length at pin 13 arranges left-hand thread.

Although it addition, Sa side, surface is set as decorative cover but it also may S side, the back side to be set as dress Facing.In this case, with reference to Figure 40, by the rotation by twin shaft shoulder stirring-head type instrument 5 Direction, spiral fluted coiling direction according to condition F, G, H, I set, and thereby, can prevent Sb overleaf (decorative cover) side produces groove V, even if or being formed with groove V also can reduce the degree of depth of groove V.

It is to say, make twin shaft shoulder stirring-head type instrument 5 towards anticlockwise and by the setting of Sb side, the back side In the case of decorative cover, it may be desirable to, including: docking operation, in this docking operation, The end face making metallic plate abuts each other；And bonding process, in this bonding process, make the second axle Shoulder 12 is relative with the decorative cover of metallic plate, and by the thickness of slab side of the axial centre of pin 13 Yu metallic plate After center is directed at, the pin 13 of the twin shaft shoulder stirring-head type instrument 5A towards anticlockwise is made to move to right Meet portion N, carry out friction-stir joint, distance Z between shaft shoulder portion is set as the thickness of slab of metallic plate with Under, and the helicla flute of right-hand thread is formed in the second side, shaft shoulder portion 12 of the outer peripheral face of pin 13, and make The helicla flute stating right-hand thread is formed with the ratio of more than 25% relative to distance Z between shaft shoulder portion.

According to above joint method, the right-hand thread of the second side, shaft shoulder portion 12 with more than 25% ratio Being formed, therefore, the metal that the helicla flute of reason right-hand thread causes moves so that twin shaft shoulder stirring-head Type instrument 5A is pressed towards the opposition side (lower section) with sliding axle 4 such that it is able to prevent twin shaft shoulder Stirring head dummy instrument 5A enters too far into the back side (decorative cover) Sb of metallic plate.Thereby, it is possible to prevent (decorative cover) produces groove overleaf, even if or forming groove also can reduce the degree of depth of groove.

Then, embodiments of the invention 4 are illustrated.Figure 41 is the engaging shape representing embodiment 4 State or the front view of docking form, wherein, Figure 41 (a) represents type I, and Figure 41 (b) represents class Type II, Figure 41 (c) represents type-iii.In example 4, prepare three kinds of bodies to be tested, the most right The part of type I, Type II and type-iii carries out friction-stir joint respectively, and to each after engaging From angular deformation investigate.

Type I～III are double face slab 201A, the 201B being made up of aluminium alloy 6N01-T5 material, With reference to Figure 12 and Figure 41, it is set to and makes outside plate heavy section (first outside plate heavy section the 211, second outside plate Heavy section 221) thickness of slab a=3mm, the thickness of covering part (covering part 213,223,232,242) Spend b=0.5mm, from length c of support plate the 204 to the first end face 33 and from support plate 204 to the second Length c=15mm of end face 43, from the length of the upper surface of outside plate 202 to the lower surface of inner panel 203 D=30mm, left and right width dimensions e=200mm, extend a size of 5000mm.

With reference to Figure 15, twin shaft shoulder stirring-head type instrument 265 is set to and makes the first shaft shoulder portion 252 times The diameter X2=10mm of end face 252c, the diameter Y2=of upper surface 253c in the second shaft shoulder portion 253 10mm, the external diameter Y1=15mm in the second shaft shoulder portion 253, the external diameter U=6mm of pin 254.From the first axle The length (length of pin 254) in shoulder 252 to the second shaft shoulder portion 253 is set as 2.9mm.It is formed at The shape of the depressed part (not shown) of the lower surface 252c in the first shaft shoulder portion 252 is whirlpool from top view Rotation shape, the depth-set of depressed part is 0.3mm, and the spacing of depressed part is set as 1.2mm.Twin shaft shoulder Stirring head dummy instrument 265 is set to towards right rotation, type I～III all from Figure 41 (a)～Figure 41 (c) Paper outside move towards rear side.The speed setting of twin shaft shoulder stirring-head type instrument 265 is 2000rpm, translational speed is set as 1000mm/min.

In type I, as shown in Figure 41 (a), at the row of twin shaft shoulder stirring-head type instrument 265 Enter the left side configuration double face slab 201A in direction, configure double face slab 201B on right side, and make the first hook Portion 212A and the engaging of the second hook portion 222B.

In Type II, as shown in Figure 41 (b), at the row of twin shaft shoulder stirring-head type instrument 265 Enter the right side configuration double face slab 201A in direction, configure double face slab 201B in left side, and make the first hook Portion 212A and the engaging of the second hook portion 222B.

In type-iii, as shown in Figure 41 (c), at twin shaft shoulder stirring-head type instrument 265 The left side configuration double face slab 201A of direct of travel, configures double face slab 201B, and makes first on right side End face 233A and the second end face 243B docking.

Figure 42 is the figure of the angular deformation result representing type I.Figure 43 is the angular deformation representing Type II The figure of result.Figure 44 is the figure of the angular deformation result representing type-iii.Transverse axis represents engaged each The body to be tested length in the direction of the width away from left-hand end.Width=200mm is to represent centrage The position of C.The longitudinal axis represent each body to be tested away from arbitrary datum mark, engage after height.To respectively treating The distance towards bearing of trend from the front end of test body is 50mm, 200mm, 400mm, 600mm, 800mm, The height everywhere of 950mm calculates.

Such as Figure 42, shown in 43, in type I, Type II, in the position of width=180mm The height at place is the highest, and the height in the position of width=210mm is minimum.It is to say, engage Part forms slight concave shape.Additionally, in the position of width=180mm～210mm On difference of height, Type II is bigger than type I.Additionally, in the position of in the width direction=210mm to treating On the difference of height of the right-hand member of test body, Type II is also big than type I.It is to say, it is known that class The angular deformation of type II angular deformation than type I on the whole is big.

It is believed that this is due to as shown in Figure 41 (a) and Figure 41 (b), double face slab 201A, 201B is by the force direction of twin shaft shoulder stirring-head type instrument 265 and blocking of double face slab 201A, 201B Close caused by the difference of form.It is contemplated that make the twin shaft shoulder stirring-head type work of present embodiment Have 265 (helicla flute 255 of pin 254 is left-hand thread) towards right rotation, and outside the paper of Figure 41 When past rear side moves, effect has stress F1.

Therefore, if the Type II shown in Figure 41 (b), then due to inclined plane Ma of holding section M Incline direction is almost parallel with the action direction of stress F1, and defeated relative to centrage C of stress F1 Entering position and be positioned at the same side with inclined plane Ma, therefore, double face slab 201B easily moves towards right obliquely downward It is dynamic, so that the separate probability of double face slab 201A, 201B improves in Jie Heing.

On the other hand, if type I shown in Figure 41 (a), then due to the inclined plane of holding section M The incline direction of Ma intersects with the action direction of stress F1, and defeated relative to centrage C of stress F1 Enter position and be positioned at opposition side, therefore, it is possible to be effectively prevented double face slab in joint with inclined plane Ma 201A, 201B divide out.

It addition, as shown in figure 44, in type-iii, the position that width is 180mm with Height in the position that width is 210mm is roughly the same.It is to say, compared with the end of left and right, Bonding part is the highest, observes in mountain type from front.Additionally, the difference of height of type-iii also than type I, The difference of height of II is big.Assume to configure polylith (such as five pieces) double face slab, and as type-iii Start from N side, docking section friction-stir engage, then it is believed that after Jie Heing double face slab entirety angle Deflection can increase.Therefore, from the viewpoint of bond strength, the most first to holding section M and docking It is the most no problem which in portion N carries out engaging, if but if considering angular deformation amount, ideal , first carry out friction-stir joint from M side, holding section.

Figure 45 is by the direction of rotation of twin shaft shoulder stirring-head type instrument, spiral fluted coiling direction, card Close the table after form collects.In Figure 45, it is shown that the optimum condition 1～4 of four types.Such as condition Shown in 1 (same with present embodiment), at the twin shaft shoulder stirring-head type instrument making helicla flute be left-hand thread 265 towards right rotation, and in the case of moving towards rear side outside the paper of Figure 45, engaging form is excellent Select Selective type I.

It is to say, in condition 1, due to make twin shaft shoulder stirring-head type instrument 265 towards right rotation, Therefore, effect have relative to centrage C from left side the component in direction towards right side, and plastification stream Metal after Dong can be guided by helicla flute, and moves down from upper.Therefore, in condition 1, such as card Close and do so with there being stress F1 shown in form.Thus, in type I, by with relative with stress F1 Mode the second hook portion 212B and inclined plane Ma of holding section M are set, it is thus possible to double-deck in preventing from engaging Panel 201A, 201B divide out.

Additionally, as shown in condition 2, at the twin shaft shoulder stirring-head type instrument making helicla flute be right-hand thread 265 towards anticlockwise, and in the case of moving towards rear side outside the paper of Figure 45, engaging form is excellent Select Selective type II.

It is to say, in condition 2, due to make twin shaft shoulder stirring-head type instrument 265 towards anticlockwise, Therefore, effect have relative to centrage C from right side the component in direction towards left side, and plastification stream Metal after Dong can be guided by helicla flute, and moves down from upper.Therefore, in condition 2, such as card Close and do so with there being stress F2 shown in form.Thus, in Type II, by with stress F2 phase To mode the second hook portion 212B and inclined plane Ma of holding section M are set, it is thus possible to double in preventing from engaging Deck panels 201A, 201B divide out.

Similarly, as shown in condition 3, in the twin shaft shoulder stirring-head type work making helicla flute be right-hand thread Tool is 265 towards right rotation, and in the case of moving towards rear side outside the paper of Figure 45, engages form Preferably select type IV.

Similarly, as shown in condition 4, in the twin shaft shoulder stirring-head type work making helicla flute be left-hand thread Tool is 265 towards anticlockwise, and in the case of moving towards rear side outside the paper of Figure 45, engages form Preferably select type V.

Even if in the case of condition 3, condition 4, by setting by the way of relative with stress F3, F4 Put inclined plane Ma of snap-latch surface M ' and the second hook portion 212B ', it is thus possible to double face slab in preventing from engaging 201A ', 201B ' are separately.

Additionally, in condition 1, condition 2, it may be desirable to, set in the first side, shaft shoulder portion 252 Put covering part, in condition 3,4, it may be desirable to, in the second side, shaft shoulder portion 253, covering is set Portion.Thereby, it is possible to metal adds to make because of friction-stir the side that metal is not enough, accordingly, it is capable to Enough supplement metal not enough.

In embodiment 5, use five pieces of double face slabs various sizes of with embodiment 4 to carry out friction and stir Mix joint.If with reference to Figure 12, the double face slab of embodiment 5 is set to the thickness of slab a making outside heavy section =4.0mm, the thickness b=0.5mm of covering part, left and right width dimensions e=400mm, prolongation are a size of 12500mm。

If with reference to Figure 15, twin shaft shoulder stirring-head type tool settings becomes to make the lower end in the first shaft shoulder portion 252 The diameter X2=15mm of face 252c, the external diameter Y1=18mm in the second shaft shoulder portion 253, the second shaft shoulder portion The diameter Y2=15mm of the upper surface 253c of 253, the external diameter U=9mm of pin 254.From the first shaft shoulder portion The length (length of pin 254) in the 252 to the second shaft shoulder portion 253 is set as 3.7mm.Additionally, will be double The rotary speed of shaft shoulder portion stirring head dummy instrument is set as 1000rpm.Additionally, by twin shaft shoulder stirring-head It is 1000mm/min that the translational speed of type instrument is set in M side, holding section, in N side, docking section be 1500mm/min。

In embodiment 5, the double face slab of a side is placed on desktop, by the double face slab of the opposing party Put down from top, carry out engaging and docking.By identical operation by five pieces of double face slab gaplesss After ground engaging, fixing assembly makes it not move freely.And use with 1.5m interval be arranged in prolongation Horizontal pressing tongs on direction presses, so that assembly will not float.Additionally, by assembly Four corners are clamped simply.Then, start from one end to carry out friction-stir joint successively.

Even if under conditions of embodiment 5, also can produce and be not engaged bad face component.Here, In general, when hardware being carried out friction-stir and engaging, joint is made sometimes because of thermal contraction After hardware generation warpage.Assume on the surface of hardware, the back side carries out friction-stir joint In the case of, at rotary speed, translational speed and the movable length of the throw with the same terms, After the surface of hardware is carried out friction-stir joint, rear side is carried out friction-stir joint, then The rear side of hardware may be warped into concavity.

This is due to after face side is carried out friction-stir joint, because thermal contraction can make hardware exist Face side forms concavity, therefore, is turned over by hardware when being placed on smooth desktop, so that it may make table Gap between face and hardware becomes big.In this state, if rear side is carried out friction-stir Engage, then the heat produced by friction-stir is just not easy to dissipate to desktop, therefore, makes on hardware The heat of residual increases.As a result of which it is, the common effect of the heat owing to residuing in hardware so that Rear side is warped into concavity significantly.

Therefore, as long as embodiment 5, by the twin shaft shoulder stirring-head type instrument of N side, docking section It is fast, just that mobile degree of hastening is set to that the twin shaft shoulder stirring-head type instrument than holding section M moves degree of hastening The heat of docking section is entered when can prevent from engaging.Thereby, it is possible to prevent the double face slab warpage after engaging.

In embodiment 6, enter in order to the relation between the thickness of slab of plate-shaped end and length is investigated Go test.As shown in Figure 46 (a), it is the body to be tested of the same shape of U-shaped by two pieces of cross sections 301,301 docking, and docking section N is carried out friction-stir joint.Each body to be tested 301 includes propping up Bearing member 302, from the most extended plate-shaped end 303 of supporting member.

The height of body 301 to be tested is set as 30mm, extends and is dimensioned so as to 500mm.As Figure 46 (a), Shown in Figure 46 (b), by the thickness of slab a of plate-shaped end 303 and from supporting member 302 to plate-shaped end Length c of the front end of 303, as parameter, carries out friction-stir joint in each condition.At Figure 46 (b) In, each condition and the bond quality of embodiment 6 are aggregated into table.Twin shaft shoulder stirring-head type instrument Size is as shown in the table of Figure 46 (b).

As shown in Figure 46 (b), thickness of slab a=3mm, from supporting member 402 to plate-shaped end 403 Length c=50mm of front end time, joint can be produced bad.Additionally, in the situation of thickness of slab a=6mm Under, as length c=70mm, 80mm, to produce joint bad.In the case of thickness of slab a=12mm, Joint can be produced bad when length c=120mm.If it is to say, the length phase of plate-shaped end 303 Long for supporting member 302, then the front of plate-shaped end 303 is easily deformed, and the most easily leads Cause joint bad.

Figure 47 is the figure of the dependency relation representing embodiment 6.The transverse axis of Figure 47 represents thickness of slab a, vertical Axle represents length c from supporting member 302 to the front end of plate-shaped end 303.Knowable to this figure, more It is desirable that length c from supporting member to front end is set to and meets c≤7.0 × thickness of slab The condition of a+18.5mm.As long as under these conditions, it becomes possible to the deformation of suppression plate-shaped end 303, Thus it is not easy to it is bad to produce joint.

(symbol description)

1 friction-stir device

1a chuck portion

2 throw unit

3 keepers

4 sliding axles

5 twin shaft shoulder stirring-head type instruments

6 sliding members

11 first shaft shoulder portions

12 second shaft shoulder portions

13 pins

13a top helicla flute

13b lower part helical groove

100A hollow material

100B hollow material

N docking section

The thickness of T metallic plate

W plastification region (junction surface)

The external diameter in X shaft shoulder portion

The external diameter of Y pin

Distance (length of pin) between Z shaft shoulder portion

Claims

1. a friction stirring connecting method for double face slab, uses and includes a pair shaft shoulder portion and above-mentioned The twin shaft shoulder stirring-head type instrument of the pin formed between shaft shoulder portion, by the end of a pair double face slab Carry out friction-stir joint each other, it is characterised in that including:

Preparatory process, in this preparatory process, will be formed in the outside plate of the described double face slab of a side Hook portion on end and the hook portion card on the end of the outside plate of the described double face slab being formed at the opposing party Close, and the end face on the end of the inner panel that will be formed in the described double face slab of a side is with the opposing party's The end face docking of the inner panel of described double face slab, and do not engage；And

Bonding process, in this bonding process, for the holding section after engaging in described preparatory process And the docking section after docking, make the described twin shaft shoulder stirring-head type instrument of rotation move and rub Stirring engages.

2. the friction stirring connecting method of double face slab as claimed in claim 1, it is characterised in that

Each described hook portion has: thinner wall section, and this thinner wall section is extended from the heavy section of described outside plate； And extension, this extension is continuous with described thinner wall section, and stretches out along thickness of slab direction,

In described preparatory process, extension described in a pair is made to engage with each other.

3. the friction stirring connecting method of double face slab as claimed in claim 2, it is characterised in that

Sidepiece at the described extension of the described double face slab of a side is formed and stretches out inclined plane,

Described heavy section at the described double face slab of the opposing party is formed and connects with described inclined plane face of stretching out The heavy wall inclined plane touched.

4. the friction stirring connecting method of double face slab as claimed in claim 2, it is characterised in that

It is folded with support plate between described outside plate and described inner panel,

C (mm) will be set as from described support plate to the length of described end face, and by described heavy wall When the thickness of slab in portion is set as t (mm),

Meet c≤7.0 × t+18.5mm.

5. the friction stirring connecting method of the double face slab as according to any one of Claims 1-4, It is characterized in that,

In described bonding process, after described holding section is engaged, more described docking section is engaged.