CN110064837A - A kind of friction stir weld device and profile welding method - Google Patents
A kind of friction stir weld device and profile welding method Download PDFInfo
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- CN110064837A CN110064837A CN201910491998.2A CN201910491998A CN110064837A CN 110064837 A CN110064837 A CN 110064837A CN 201910491998 A CN201910491998 A CN 201910491998A CN 110064837 A CN110064837 A CN 110064837A
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- gusset
- profile
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- weld seam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/125—Rotary tool drive mechanism
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- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of friction stir weld device and profile welding methods.The friction stir weld device includes welding machine and welding auxiliary body；The welding machine includes the welding machine main shaft being coaxially disposed from top to bottom, the upper shaft shoulder, mixing needle and the lower shaft shoulder；The welding auxiliary body includes the linking arm on welding machine skeleton or being integrated on the shaft shoulder, and the aligning gear of dress on the connecting arm；In front of mixing needle or the aligning gear of front and back both sides provides ideal banjo fixing butt jointing state for the mixing needle.This invention ensures that welding process can be convenient as suturing " zipper " formula.
Description
Technical field
The present invention relates to a kind of friction stir weld device and profile welding method, belong to rail traffic vehicles body construction and
Welding technology field.
Background technique
It is a kind of solid State Welding invented in 1991, and be effectively used for aluminum alloy piping welding that agitating friction, which welds (FSW),
Technique.Convention stir friction welding process is the stirring-head of an on-consumable to be rotating insertion workpiece interface, by the shaft shoulder and
The rotary friction chafing of mixing needle and metal plastotype deformation heat make peripheral region material be heated to mecystasis, and (temperature is lower than when welding
Fusing point), at the same stirring-head with certain speed of welding along Interface Motion to be welded, thermoplastic material is constantly by stirring-head front direction
Shift in the rear, to form weld seam fine and close together.Compared with traditional welding method, agitating friction weldering process does not need filling material
Material and protective gas, welded piece square groove, surface treatment require it is lower, without complicated welding pretreatment, and postwelding knot
The defects of residual stresses and deformations of structure are small, and connector will not generate and melt related crackle, stomata and alloying element scaling loss.This
Outside, without arc light radiation, flue dust and splashing, low noise in welding process, thus agitating friction weldering is a kind of economical, efficient, high-quality
The green welding technique of amount.And weld seam is beautiful, color difference is more uniform, exempts from coating for aluminum alloy bodywork and provides excellent basis.
Although convention stir friction welding technology has many advantages, such as in terms of welding light-alloy, still have several drawbacks, such as
In the welding process there is biggish welding forging force, cause to carry out welded piece stringent dress before welding in this way
Folder, and rigid liner is added at the back of welded piece, this clamping requirement is fine in weld horizontal straight bead, but such as
When fruit welds space curved surface and complicated hollow structure part, then there are problems that very big clamping, and these clamps can stir
Biggish obstruction is caused in the direction that friction-welding machine advances, and seriously affects production efficiency.For this purpose, double-shaft shoulder agitating friction welding technology
(Bobbin Tool Friction Stir Welding, BTFSW) comes into being, and the weldering of double-shaft shoulder agitating friction has been used by stirring
Two shaft shoulders up and down of needle connection are mixed, upper and lower two shaft shoulders are contacted with the upper and lower surface of welded piece respectively, and the lower shaft shoulder is equivalent to
The rigid liner at welded piece back, such improvement just reduce the forging force in welding process, reduce butt welding tipping folder
Requirement, reduce the cost of welding tooling, and to the operability of the agitating friction of space curved surface and parts with complex structures weldering
It greatly improves.And recent years is used in BT-FSW technique in double dead axle shoulder technologies developed in FSW tool, it can be into
One step reduces total amount of heat input.Which can allow the shaft shoulder or the lower shaft shoulder to remain stationary, can be effectively defeated compared with Weld-little heat
Enter, alleviates the ruckbildung of welding line joint.
Previous single shaft shoulder agitating friction is welded in the application on vehicle body of railway vehicle and is typically limited to plate (such as hitch installation
Plate) and vertical profile (such as side wall panel, bottom frame floor), and the operation again of stringent clamping need to be carried out on dedicated workbench.BTFSW's
Appearance will be enlarged by its scope of application, allows car body always to organize weldering and is possibly realized using agitating friction welding technology.Mitsubishi Corporation of Japan discloses
PCT/JP2011/050275 patent of invention a kind of car body be provided always organize the technical solution that weldering uses FSW, but the patent uses
Scheme is welding gun equipment in body inner side, and carries out FSW welding to car body lateral joint first；Then inside, weldering inside are welded again
When mainly use arc welding or uniaxial shoulder FSW, need to apply huge axial direction to workpiece at work using the FSW of uniaxial shoulder mode
Pressure, it is very high to the requirement of car body manufacturing process, and tooling device is complicated, welding difficulty is big, the disadvantages such as higher cost.And from car
Implement welding, be highly prone to space limitation, operation difficulty is big.Application No. is EP 1057574B1 patented technologies to relate generally to one kind
Inside and outside all use FSW mode structure, weld joint on inner side since no gusset supports, can double-shaft shoulder FSW mode, outside or so
There is gusset below the joint twice FSW, it can only be using uniaxial shoulder FSW mode.The program is wanted when this road weld seam below welding
Increase the additional tooling that is fixedly clamped, production efficiency is low；It is inconvenient since top gusset is located at node when the twice of welding top
Processing can only repair a die to connecting plate to guarantee the butt-joint clearance with connecting plate, and butt-joint clearance is difficult to ensure, operability is poor.
In addition, at home and abroad there is no be all made of double-shaft shoulder FSW mode to connection inside and outside the big component of vehicle at present.
Summary of the invention
For the advantage of double-shaft shoulder agitating friction welding technology, and at present, bodywork assembly uses the welding technique scheme not
Foot, the present invention is intended to provide a kind of friction stir weld device and profile welding method, the friction stir weld device and profile welding
Method solves following problems:
1) when for example aluminum alloy bodywork of rail vehicle always organizes weldering, the attachment weld of chassis and side wall, side wall and top cover is in sky
Between position, it is difficult to be placed on special workbench back addition rigid liner carry out routine FSW welding, and use double-shaft shoulder
There is also clamping hardly possiblies for agitating friction welding technology, and the low problem of production efficiency, this is also that surfaces externally and internally is temporarily not implemented all using twin shaft
The one of the major reasons of shoulder agitating friction welding technology.
2) track aluminum alloy bodywork is generally hollow material structure, and edge beam of underframe, top cover side bar are part of growing up again, and length can
To more than 20 meters, the intracavitary portion of type is difficult to arrange that clamping apparatus carries out the support in elongated direction and fixes.
3) double-shaft shoulder FSW welding process requires the problem of fixed plate alignment and soldering joint automatic tracking.
4) after hollow material is soldered side, other side can cause gusset to be difficult to be aligned and continuously due to welding deformation
Gap contact.
5) after the further lightweight of car body, it will lead to car body using conventional arc weldering and deform bigger problem.
6) traditional car body, which always organizes weldering, leads to that weld seam is uneven, color difference is larger using arc welding, is highly detrimental to car body and exempts from
The realization of coating.
To achieve the goals above, the technical scheme adopted by the invention is that:
A kind of friction stir weld device, is structurally characterized in that, including welding machine and welding auxiliary body；The welding machine include from upper and
Welding machine main shaft, the upper shaft shoulder, mixing needle and the lower shaft shoulder of lower coaxial arrangement；
The welding auxiliary body includes the linking arm on welding machine skeleton or being integrated on the shaft shoulder, and is mounted in linking arm
On aligning gear；In front of mixing needle or the aligning gear of front and back both sides provides ideal docking for the mixing needle
Connector status.
As a result, by auxiliary welding equipment, so that being at least provided with the aligning gear in front in mixing needle, herein
Front refer to the direction that welding machine will weld, such aligning gear packet can provide ideal banjo fixing butt jointing for the mixing needle
State, to guarantee that welding process can be convenient as suturing " zipper " formula.
The case where aligning gear is all arranged for both sides before and after mixing needle, welding machine main shaft is generally directly through the linking arm
Setting.
According to an embodiment of the invention, can also make further optimization to the present invention, the following are the skills formed after optimization
Art scheme:
For the ease of carrying out welding to two butted section bars, it is preferable that friction stir weld device of the present invention is set in welding
It sets between the first profile longitudinally extended and the second profile longitudinally extended, first profile and the second profile all have limit
Gusset, inner contact gusset and lateral joint gusset, the limit gusset is between inner contact gusset and lateral joint gusset；
The notch placed welding machine and weld auxiliary body, the inside of first profile are formed between first profile and the second profile
First of weld seam is formed between connector gusset and the inner contact gusset of the second profile, the mixing needle is located at first of weld seam
It is interior and can be along first of weld movement；The aligning gear is fastened in the limit gusset and the second profile of first profile
The extension end of gusset is limited, so that the limit gusset of first profile and the limit gusset of the second profile are aligned setting.In this way,
Notch between first profile and the second profile provides space to implement the weldering of double-shaft shoulder agitating friction.It is special to be also provided with simultaneously
Gusset is limited, gusset is limited in first of weld seam welding can be used as guide and limit mechanism.
Welding is carried out to second and third road weld seam for convenience, to being welded to connect the first profile and the second profile one
It rises, is provided with connection section bar between first profile and the second profile；The lower part of the connection section bar is equipped with bearing rib, should
Bearing rib is abutted with the limit gusset of the limit gusset of first profile and the second profile respectively；The connection section bar it is upper
Portion is equipped with welding point gusset, the welding point gusset outside with the lateral joint gusset of the first profile and the second profile respectively
The alignment of connector gusset, and second weld seam is formed between the welding point gusset and the lateral joint gusset of the first profile, it should
Third road weld seam is formed between welding point gusset and the lateral joint gusset of the second profile.It is limited in second and third road weld seam
Gusset can be used as supporting mechanism, be enclosed in inside profile after the completion of welding.
In two of them preferred embodiment of the present invention, the limit gusset is arranged in "-" type, and it is whole to limit gusset
Body is parallel to the limit gusset setting；Or the limit gusset is L-shaped or T-type setting, and the one end for limiting gusset is fixed on
On the limit gusset.
In order to guarantee the effect of guide and limit, the extension end of the limit gusset is convex with cooperating with the aligning gear
Platform muscle wall.Aligning gear is fastened on the boss muscle wall in this way, to generate pulling force or pressure from vertical direction, transverse direction
Power guarantees that limit gusset is corresponding, to guarantee that unfitness of butt joint meets welding requirement.
In order to guarantee that first of weld seam is in perfect condition, the working position of the mixing needle is in the shaft shoulder and the lower shaft shoulder
Between, and the consistency of thickness of the height of mixing needle and the inner contact gusset.It is flanked in the shaft shoulder upper in this way and the clamping of the lower shaft shoulder
Head gusset, dislocation when can prevent inner contact gusset from welding.
In the one of preferred embodiment of the present invention, the aligning gear is idler wheel and/or sliding slot.It corrects as a result,
Idler wheel shape can be used in mechanism, can also be used sliding slot+lubricating fluid mode, reduces resistance in motion process and to car body base material
Damage.
Further, it is based on the same inventive concept, utilizes the friction stir weld device the present invention also provides a kind of
The method for carrying out profile welding comprising following steps:
S1, longitudinally disposed the first profile and the second profile are concordantly placed, first profile and the second profile all have limit
Gusset, inner contact gusset and lateral joint gusset, the limit gusset is between inner contact gusset and lateral joint gusset；
Welding auxiliary body is protruded into together with welding machine inside the notch between the first profile and the second profile, wherein welding auxiliary
The aligning gear cutting ferrule of mechanism lives the limit gusset of the limit gusset and the second profile of the first profile, first profile and second type
The limit gusset of material is parallel to welding direction setting, in the whole welding process, welds auxiliary body and welding machine along welding side
To synchronizing moving, the mixing needle of welding machine is located between the first profile and the equal inner contact gusset of the second profile to first of weld seam
Welding is carried out, the limit gusset of first profile and the limit gusset of the second profile are to mixing needle guide and limit；
S2, connection section bar is put into inside the notch, the lower part of the connection section bar is equipped with bearing rib, the bearing rib point
It Zhi Cheng not be connected on the limit gusset of first profile and the limit gusset of the second profile；The top of the connection section bar is set
There is welding point gusset, the welding point gusset lateral joint with the lateral joint gusset of the first profile and the second profile respectively
Gusset alignment；Second weld seam is formed between the welding point gusset and the lateral joint gusset of the first profile, which connects
Third road weld seam is formed between head gusset and the lateral joint gusset of the second profile；
S3, the welding that second weld seam and third road weld seam are completed by welding machine, the limit gusset and second of first profile
The limit gusset of profile forms connection section bar and supports.
Between step S1 and step S2, it is additionally provided with pre-shaping step: after completing first of weld seam, passing through milling cutter equating first
The lateral joint gusset of profile and the lateral joint gusset of the second profile, place into the connection section bar complete second weld seam and
The welding of third road weld seam.
By taking rail vehicle as an example, first profile is one kind of vehicle body bottom frame profile and carbody canopy profile, described the
Two profiles are vehicle body side wall profile.Vehicle body bottom frame side bar, carbody canopy side bar are part of growing up again, and length can be to more than 20 meters, this hair
Bright welding method can well solve the problem of car body welding.
The present invention provides a kind of double-shaft shoulder agitating friction weldering auxiliary dress of suitable aluminum alloy bodywork of rail vehicle assembly welding
It sets and corresponding aluminum profile jointing form, there is following innovative point:
1) car body always organizes weldering side wall and the connection of chassis, top cover welds mode using double-shaft shoulder agitating friction；
2) the welding point position between big component is provided with special gusset, for automatically correcting radius off-set joint and support workpiece；
3) welding machine is provided with morpheme correction auxiliary device before and after mixing needle, which is mounted on welding machine main support, or
Person is integrated on the dead axle shoulder of top, as stirring-head moves synchronously, to provide an ideal banjo fixing butt jointing at mixing needle；
4) connecting portion be provided with 3 stir friction welding seams, first on the inside of profile, second and third road is on the outside.It is best
Ground, after completing first of weld seam, using one milling cutter of swivel head clamping of welding, equating profile lateral joint gusset, then
It is put into connection section bar and is sequentially completed the implementation of second and third road weld seam, complete car body and always organize weldering.
Compared with prior art, the beneficial effects of the present invention are: the present invention is not needed using double-shaft shoulder agitating friction method
Guide and limit gusset is arranged in additional back-supported feature at aluminum profile welding point,
1) it greatly reduces car body and always organizes weldering process clamping complexity, welding process can be convenient as suturing " zipper " formula.
2) 3 type chambers are arranged in body profile connecting portion, and weld seam is made to be located at type chamber medium position, stir to implement double-shaft shoulder
It mixes friction welding (FW) and space is provided.It is also provided with special gusset simultaneously, i.e. limit gusset, limit can be oriented in first of weld seam welding
Position mechanism, second and third road weld seam Shi Kezuo supporting mechanism.Vehicle body is enclosed in after the completion of welding.
3) welding auxiliary body and body profile gusset collective effect form a straight and gapless at mixing needle
Joint form.
4) when welding car body, chassis, side wall, the elongated weld seam between roof can only complete inside and outside table on the outside of car body
Face weld, and operates simpler.
5) idler wheel shape can be used in aligning gear, and sliding slot+lubricating fluid mode can also be used, and reduces the resistance in motion process
And the damage to car body base material.
6) the car body manufacturing method provided has efficient, green, deflection small, and weldquality is good, operability is good, cost
The features such as lower.
7) realize that vehicle uses FSW technology, the visible surface on the outside of side wall is very smooth, to manufacture more environmentally protective exempt from
Coating car body and car body lightweight provide good basis.
8) this method is applicable not only to vehicle body of railway vehicle field, applies also for the company of all flat hollow material structures
It connects.
Detailed description of the invention
Fig. 1 is the car body weld seam arrangement and welding implementation diagram of one embodiment of the invention；
Fig. 2 is welding machine of the present invention and auxiliary body's welding process schematic；
Fig. 3 is welding machine of the present invention and auxiliary body's welding process front view；
Fig. 4 is A-A cross-sectional view in Fig. 3；
Fig. 5 is B-B cross-sectional view in Fig. 3；
Fig. 6 is first of weld seam welding schematic diagram of the invention；
Fig. 7 is second and third road welding line joint finishing figure of the invention；
Fig. 8 is second and third road weld seam welding schematic diagram of the invention；
Fig. 9 is present invention welding auxiliary body's aligning gear and limit gusset another kind form；
Figure 10 is the soldered state diagram of the present invention；
Figure 11 is present invention welding auxiliary body's linking arm alternative solution schematic diagram.
In figure:
Welding machine 1, welding machine main shaft 11, the upper shaft shoulder 12, the lower shaft shoulder 13, mixing needle 14, milling head 15, auxiliary body 2, linking arm 21,
Pin hole 21a, aligning gear 22, limiting groove 22a, body profile 3 limit gusset 31, boss muscle wall 31a, inner contact gusset
32, lateral joint gusset 33, connection section bar 4, bearing rib 41, welding point gusset 42；First of weld seam w1；Second weld seam
w2；Third road weld seam w3.
Specific embodiment
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention be can be combined with each other.For sake of convenience, hereinafter as occurred
"upper", "lower", "left", "right" printed words only indicate consistent with the upper and lower, left and right direction of attached drawing itself, do not play limit to structure
It is set for using.
Fig. 1 is car body weld seam arrangement and welding implementation diagram.The railway train body of the present embodiment always organizes the chassis of weldering
Two-sided three stir friction welding seams mode is respectively adopted in connection with side wall, top cover and side wall.Body profile connecting portion is set
3 type chambers are set, and weld seam is made to be located at type chamber medium position, provide space to implement the weldering of double-shaft shoulder agitating friction.First to inside
Welding, body profile 3 have reserved notch on the outside, and 1 head of welding machine can protrude into notch, under the action of auxiliary body 2, complete the
One of weld seam w1.Then connection section bar 4 is filled in notch, then is respectively completed second weld seam w2 and third road weld seam with welding machine 1
w3。
Fig. 2 is welding machine and auxiliary body's welding process schematic.Two body profiles 3 concordantly place, auxiliary body 2 with
Welding machine 1 is protruded into together inside the notch of body profile 3, and 2 cutting ferrule of auxiliary body lives the limit gusset in the medium-sized intracavitary portion of body profile 3
31, limit gusset 31 is parallel to welding direction.In the whole welding process, auxiliary body 2 is synchronous along welding direction with welding machine 1
It is mobile.
Fig. 3 is welding machine and auxiliary body's welding process front view, and Fig. 4 is A-A cross-sectional view in Fig. 3, and Fig. 5 is that B-B is cutd open in Fig. 3
View.Welding machine 1 includes at least welding machine main shaft 11, the upper shaft shoulder 12, the lower shaft shoulder 13 and mixing needle 14.Auxiliary body 2 includes linking arm
21 and aligning gear 22.Body profile 3 is provided with limit gusset 31, inner contact gusset 32 and lateral joint gusset 33.
The main shaft 11 on welding machine 1 for implementing the weldering of double-shaft shoulder agitating friction, the upper shaft shoulder 12, the lower shaft shoulder 13 and mixing needle 14
It is coaxial.14 working position of mixing needle is between the shaft shoulder 12 and the lower shaft shoulder 13, the height and inner contact of mixing needle 14
The consistency of thickness of gusset 32, the upper shaft shoulder 12 and the lower shaft shoulder 13 are in two tables up and down of inner contact gusset 32 respectively when work
Face.Auxiliary body 2 is fixed on the skeleton of welding machine 1 by linking arm 21, is respectively provided with several idler wheels in 21 two sides of linking arm
Or the aligning gear 22 of chute-like, pin hole 21a is set among linking arm 21, the main shaft 11 on welding machine 1 is passed through from pin hole 21a,
It is not in contact with each other.In welding process, auxiliary body 2 is synchronous mobile in welding direction (x to) with welding machine 1.
Idler wheel or the aligning gear of chute-like 22 are fastened on limit gusset 31, vertical direction (z to) generate pulling force or
Pressure Fz makes to limit the alignment of gusset 31, and then power is transmitted to 32 position of inner contact gusset, makes two pieces of inner contact gussets 32
It eliminates z to be aligned to dislocation, guarantees that unfitness of butt joint meets welding requirement.Tightening force Fy is generated in transverse direction (y to), makes limit rib
Plate 31 tenses in opposite directions, and then two pieces of joint inner contact gusset 32 is made to contact with each other, and guarantees that gap meets welding requirement.Correction
Mechanism 22 is in the front-rear position of mixing needle 14, and especially in direction of advance, aligning gear 22 can generate active force in advance, to stir
It mixes 14 position of needle and ideal banjo fixing butt jointing state is provided.
Fig. 6 is first of weld seam welding schematic diagram.Welding machine and auxiliary body protrude into inside body profile 3, by correcting machine
The limiting groove 22a cutting ferrule of structure 22 lives to limit the boss muscle wall 31a on gusset 31, is aligned inner contact gusset 32 and contacts.
It is embedded in inner contact gusset 32, between the upper shaft shoulder 12 and the lower shaft shoulder 13, then passes through the upper shaft shoulder 12, the lower shaft shoulder 13 and mixing needle
14 friction generates heat, and the softening of 3 joint aluminium alloy of body profile is made to reach soldering under mecystasis.
Fig. 7 is second and third road welding line joint finishing figure.After first of weld seam completes welding, 33 meeting of lateral joint gusset
Generate certain deformation, at this time can by the way that stirring plumb joint is replaced with milling head 15, to the end of lateral joint gusset 33 into
Row finishing provides basis with connection section bar 4 seamless interfacing to be subsequent.There are more than certain processing for 33 end of lateral joint gusset
Amount.
Fig. 8 is second and third road weld seam welding schematic diagram.Connection section bar 4 is equipped with bearing rib 41, bearing rib 41 in lower section
Width be less than welding point gusset 42, so as to smoothly on the outside of the car body in the notch of insertion body profile 3.When connection section bar 4
After being embedded in body profile 3, bearing rib 41 is contacted with limit gusset 31, and welding point gusset 42 and lateral joint gusset 33 are right
Together.Then pressing force Fzw is applied to connection section bar 4 on the outside, and inside makes workpiece by the limit offer reaction force of gusset 31
Reach equilibrium state, is supported fixation it is not necessary that other clamping tools are arranged in the intracavitary portion of type, provides reason for the welding of welding machine 1
Think banjo fixing butt jointing, and then completes the welding of all weld seams.
Fig. 9 is another the form schematic diagram for welding auxiliary body's aligning gear and limiting gusset.In body profile 3
Limit gusset 31 may be configured as " L-type ", and boss muscle wall 31a is arranged in its end.It is settable with inner contact muscle to limit gusset 31
Plate 32 is connected directly, and power transmission effect is more preferable.Aligning gear 22 uses sliding slot form, can smear lubricating fluid in advance at work.
By taking car body as an example, included the following steps: using the method that above-mentioned friction stir weld device carries out profile welding
Step 1: the first longitudinally disposed profile 3 and the second profile 3 are concordantly placed, first profile and the second profile have
There are limit gusset 31, inner contact gusset 32 and lateral joint gusset 33, the limit gusset 31 to be located at 32 He of inner contact gusset
Between lateral joint gusset 33；Such as Fig. 2-6, shown in 9, welding auxiliary body 2 and welding machine 1 are protruded into the first profile 3 and the together
Inside notch between two profiles 3, wherein 22 cutting ferrule of aligning gear of welding auxiliary body 2 lives the limit gusset 31 of the first profile
With the limit gusset 31 of the second profile, the limit gusset 31 of first profile 3 and the second profile 3 is parallel to welding direction setting,
In the whole welding process, along welding direction synchronizing moving, the mixing needle 14 of welding machine 1 is located at for welding auxiliary body 2 and welding machine 1
Welding is carried out to first of weld seam w1 between first profile and the equal inner contact gusset 32 of the second profile, first profile
The limit gusset 31 of gusset 31 and the second profile is limited to 14 guide and limit of mixing needle.
Step 2: as shown in figs, connection section bar 4 is put into inside the notch, under the connection section bar 4
Portion is equipped with bearing rib 41, which supports the limit gusset 31 and the second profile for being connected to first profile respectively
Limit gusset 31 on；The top of the connection section bar 4 is equipped with welding point gusset 42, and the welding point gusset 42 is respectively with the
The lateral joint gusset 33 of one profile and the lateral joint gusset 33 of the second profile are aligned；The welding point gusset 42 and first
Second weld seam w2, the lateral joint of the welding point gusset 42 and the second profile are formed between the lateral joint gusset 33 of profile
Third road weld seam w3 is formed between gusset 33.
Step 3: completing the welding of second weld seam w2 and third road weld seam w3, the limit of first profile by welding machine 1
The limit gusset 31 of position gusset 31 and the second profile forms connection section bar 4 and supports.
When necessary, between second step and third step, it is additionally provided with pre-shaping step: as shown in fig. 7, completing first
After weld seam w1, by the lateral joint gusset 33 of the first profile of milling cutter equating and the lateral joint gusset 33 of the second profile, then put
Enter the welding that the connection section bar 4 completes second weld seam w2 and third road weld seam w3.The assembly of milling cutter can directly utilize weldering
Owner's axis.
According to an embodiment of the invention, first profile 3 is one kind of vehicle body bottom frame profile and carbody canopy profile, institute
Stating the second profile 3 is vehicle body side wall profile.
Figure 10 is the alternative solution of above-mentioned welding auxiliary body linking arm.When above-mentioned double-shaft shoulder agitating friction uses upper shoulder axis
When the dead axle shoulder agitating friction mode of sleep mode, the linking arm 21 of auxiliary body 2, which can be directly integrated, is connected to the shaft shoulder 12
On, structure is simpler.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalent forms of the invention
Modification each fall within the application range as defined in the appended claims.
Claims (10)
1. a kind of friction stir weld device, which is characterized in that including welding machine (1) and welding auxiliary body (2)；
The welding machine (1) includes the welding machine main shaft (11) being coaxially disposed from top to bottom, the upper shaft shoulder (12), mixing needle (14) and lower axle
Shoulder (13)；
Welding auxiliary body (2) includes the linking arm (21) on welding machine skeleton or being integrated on the shaft shoulder (12), with
And the aligning gear (22) on linking arm (21)；Positioned at mixing needle (14) front or the aligning gear of front and back both sides
(22) ideal banjo fixing butt jointing state is provided for the mixing needle (14).
2. friction stir weld device according to claim 1, which is characterized in that the friction stir weld device is in welding
The first profile longitudinally extended is set between the second profile for longitudinally extending, first profile and the second profile all have limit
Position gusset (31), inner contact gusset (32) and lateral joint gusset (33), the limit gusset (31) are located at inner contact gusset
(32) between lateral joint gusset (33)；
Placement welding machine (1) is formed between first profile and the second profile and welds the notch of auxiliary body (2), described first
It is formed first of weld seam (w1) between the inner contact gusset (32) of profile and the inner contact gusset (32) of the second profile, it is described
Mixing needle (14) is located in first of weld seam (w1) and can be mobile along first of weld seam (w1)；
The aligning gear (22) is fastened in the limit gusset (31) of first profile and the limit gusset (31) of the second profile
Extension end so that the limit gusset (31) of the limit gusset (31) of first profile and the second profile alignment setting.
3. friction stir weld device according to claim 2, which is characterized in that between first profile and the second profile
It is provided with connection section bar (4)；
The lower part of the connection section bar (4) be equipped with bearing rib (41), the bearing rib (41) respectively with first profile
The limit gusset (31) for limiting gusset (31) and the second profile abuts；
The top of the connection section bar (4) be equipped with welding point gusset (42), the welding point gusset (42) respectively with the first type
The alignment of the lateral joint gusset (33) of the lateral joint gusset (33) of material and the second profile, and the welding point gusset (42) with
Second weld seam (w2) is formed between the lateral joint gusset (33) of first profile, the welding point gusset (42) and the second profile
Lateral joint gusset (33) between formed third road weld seam (w3).
4. friction stir weld device according to claim 2 or 3, which is characterized in that the limit gusset (31) is in a word
Type setting, and limit gusset (31) and be entirely parallel with limit gusset (31) setting；Or
The limit gusset (31) is L-shaped or T-type is arranged, and the one end for limiting gusset (31) is fixed on the limit gusset (31)
On.
5. friction stir weld device according to claim 2 or 3, which is characterized in that the stretching of limit gusset (31)
Holding has the boss muscle wall (31a) cooperated with the aligning gear (22).
6. friction stir weld device according to claim 2 or 3, which is characterized in that the work department of the mixing needle (14)
Position is between the shaft shoulder (12) and the lower shaft shoulder (13), and the thickness of the height of mixing needle (14) and the inner contact gusset (32)
Degree is consistent.
7. friction stir weld device according to any one of claim 1-3, which is characterized in that the aligning gear (22)
For idler wheel and/or sliding slot.
8. a kind of method for carrying out profile welding using friction stir weld device described in any one of claim 1-7, feature
It is, includes the following steps:
S1, longitudinally disposed the first profile (3) and the second profile (3) are concordantly placed, first profile and the second profile have
There are limit gusset (31), inner contact gusset (32) and lateral joint gusset (33), which is located at inner contact
Between gusset (32) and lateral joint gusset (33)；
Auxiliary body (2) will be welded and welding machine (1) is protruded into together inside the notch between the first profile (3) and the second profile (3),
Wherein aligning gear (22) cutting ferrule of welding auxiliary body (2) lives the limit of limit gusset (31) and the second profile of the first profile
The limit gusset (31) of gusset (31), first profile (3) and the second profile (3) is parallel to welding direction setting, is entirely welding
In termination process, along welding direction synchronizing moving, the mixing needle (14) of welding machine (1) is located at for welding auxiliary body (2) and welding machine (1)
Welding, first type are carried out to first of weld seam (w1) between first profile and the equal inner contact gusset (32) of the second profile
The limit gusset (31) of material and the limit gusset (31) of the second profile are to mixing needle (14) guide and limit；
S2, connection section bar (4) is put into inside the notch, the lower part of the connection section bar (4) is equipped with bearing rib (41), should
Bearing rib (41) supports the limit gusset (31) of the limit gusset (31) and the second profile that are connected to first profile respectively
On；The top of the connection section bar (4) be equipped with welding point gusset (42), the welding point gusset (42) respectively with the first profile
Lateral joint gusset (33) and the second profile lateral joint gusset (33) alignment；The welding point gusset (42) and first
Second weld seam (w2) is formed between the lateral joint gusset (33) of profile, the welding point gusset (42) is outer with the second profile
Third road weld seam (w3) is formed between side connector gusset (33)；
S3, the welding that second weld seam (w2) and third road weld seam (w3) are completed by welding machine (1), the limit of first profile
The limit gusset (31) of gusset (31) and the second profile forms connection section bar (4) and supports.
9. the method for profile welding according to claim 8, which is characterized in that between step S1 and step S2, be additionally provided with
Pre-shaping step: after completing first of weld seam (w1), pass through the lateral joint gusset (33) and second type of the first profile of milling cutter equating
The lateral joint gusset (33) of material places into the connection section bar (4) and completes second weld seam (w2) and third road weld seam (w3)
Welding.
10. the method for profile welding according to claim 8 or claim 9, which is characterized in that first profile (3) is car body bottom
One kind of frame section and carbody canopy profile, second profile (3) are vehicle body side wall profile.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110647783.2A CN113263254B (en) | 2019-06-06 | 2019-06-06 | Method for welding section bar by using friction stir welding device |
| CN201910491998.2A CN110064837B (en) | 2019-06-06 | 2019-06-06 | Friction stir welding device and section welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910491998.2A CN110064837B (en) | 2019-06-06 | 2019-06-06 | Friction stir welding device and section welding method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110064837B (en) | 2021-08-17 |
| CN113263254A (en) | 2021-08-17 |
| CN113263254B (en) | 2022-04-08 |
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