CN110039170A - A kind of homogeneity fixture auxiliary single track Friction Stir Welding T connector device and method - Google Patents
A kind of homogeneity fixture auxiliary single track Friction Stir Welding T connector device and method Download PDFInfo
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- CN110039170A CN110039170A CN201910244073.8A CN201910244073A CN110039170A CN 110039170 A CN110039170 A CN 110039170A CN 201910244073 A CN201910244073 A CN 201910244073A CN 110039170 A CN110039170 A CN 110039170A
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- homogeneity
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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
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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
- B23K20/26—Auxiliary equipment
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of homogeneity fixture auxiliary single track Friction Stir Welding T connector device and method, is related to a kind of device and method of single track Friction Stir Welding T connector.The present invention solves in existing T connector Friction Stir Welding device and method, T connector root of weld interface can not be carried out sufficiently broken, lead to the problem of being easy there are problems that non-soldering defect and secondary welding in connector or applying auxiliary thermal source, connector heat-affected zone softened degree is caused to increase.Friction Stir Welding device of the invention includes the first homogeneity fixture, the second homogeneity fixture, the first positioning unit, the second positioning unit, dovetail groove platform, the first pressing plate, the second pressing plate and third positioning unit.Welding method of the invention the following steps are included: one, T connector assembly；Two, the installation of minute hand stirring-head and welding preparation；Three, Friction Stir Welding.The present invention is used for Friction Stir Welding.
Description
Technical field
The present invention relates to a kind of device and methods of single track Friction Stir Welding T connector, and in particular to a kind of homogeneity folder
Tool auxiliary single track Friction Stir Welding T connector device and method, belongs to welding technology field.
Background technique
T connector is a kind of extremely common structure type of welding field, in the energy, vehicle, ocean, aerospace, stone
The fields such as oiling work are widely used, and Friction Stir Welding (FSW) method has become the effective of welding T connector
One of approach, and there are related patents to disclose.For example, " the method for filled type agitating friction weldering welding T connector inside fillet weld
And device " (the patent No.: 201210418416.6), the welding method of weldering " a kind of T-type magnesium alloy profiles agitating friction " (patent
Number: 201410323057.5), " device and method that a kind of laser assisted friction stir welding connects light sheet T type joint " (patent No.:
And " a kind of T connector agitating friction weld fixing tool " (patent No.: 201620455367.7) etc. 201510476776.5).
In these publications, the main thought of patent 201210418416.6 is by triangle packing material by T
The advantages of fillet welding crack structure of type joint is changed to planar structure, this thought is to reduce Friction Stir Welding T connector
Welding difficulty, but have the shortcomings that two it is significant: firstly, introducing two between triangle filler and T connector fillet weld
Interface causes to be difficult to be totally disrupted in stir friction welding process since the two interfaces are located exactly at stirring-head outer rim
Formation is reliably connected；Secondly, there are two mutually symmetrical with fillet welds for T connector two sides, it is once only capable of one fillet welding of welding
Seam, if only will lead to the other side to a fillet weld welding of T connector there are lack of penetration and (be detailed in patent
201210418416.6 Figure of description, figure two), if distinguishing welding to the two sides of T connector, will lead to weld seam twice by
Heat, heat-affected zone softened degree increase, and joint performance reduces.
Patent 201410323057.5 and patent 201510476776.5, will by adjusting the mode that is loaded of T connector
Fillet weld to be welded is changed to two abutment joints, although this reduces the welding difficulty of stir friction welding process, connector root
Unavoidably there is non-soldering defect in portion, reduce joint mechanical property.Meanwhile patent 201410323057.5 clearly proposes to need
Welding is distinguished to two abutment joints, i.e. a T connector needs welding twice, so both led to connector heat-affected zone softened
Degree increases to reduce joint performance, and reduces welding efficiency when increase Welder.Although patent 201510476776.5
It is only primary to T connector welding, but it uses laser auxiliary heating, and this also will increase the softening of heat affected area and leads to connector
Reduced performance.
Patent No. 201620455367.7, a kind of entitled utility model of T connector agitating friction weldering fixing tool
T connector is changed into lap joint, and circle is processed on auxiliary clamp before welding by adjusting the mode of being loaded by patent
Angle, the upset effect using stirring-head in welding process forces material at filling fixture fillet, to make T connector root of weld
Place forms round-corner transition.But this method is that mixing needle is avoided to be broken in the welding process with auxiliary clamp collision, diameter
Overlap joint interface width need to be slightly less than, therefore sufficiently broken elimination can not be carried out to root of weld interface, T connector is caused to be forced
There is a small amount of non-soldering defect at the fillet root of weld of formation, the non-soldering defect when welding point bears dynamic loading, in connector
It is equivalent to precrack, the fatigue strength and service life of connector will be significantly reduced, and directly affect structural reliability and work
Cheng Zhiliang.
In conclusion existing T connector agitating friction weldering fixing tool and method have the following problems: the first, can not
Sufficiently broken elimination is carried out to root of weld interface, causes to be easy the presence of non-soldering defect in connector.The second, secondary welding or
Apply auxiliary thermal source, connector heat-affected zone softened degree is caused to increase, joint performance reduces, and increases working hour, reduces welding
Efficiency.
Summary of the invention
The present invention has the following problems to solve existing T connector agitating friction weldering fixing tool: the first, can not be right
Root of weld interface carries out sufficiently broken elimination, causes to be easy the presence of non-soldering defect in connector；The second, secondary welding is applied
Add auxiliary thermal source, connector heat-affected zone softened degree is caused to increase, joint performance reduces, and increases working hour, reduces welding effect
Rate provides a kind of device and method of dynamic support auxiliary Friction Stir Welding T connector.
The technical scheme is that a kind of homogeneity fixture assists single track Friction Stir Welding T connector device, it includes
Minute hand stirring-head, the first homogeneity fixture, the second homogeneity fixture, the first positioning unit, the second positioning unit, dovetail groove platform, the
One pressing plate, the second pressing plate and third positioning unit, the mixing needle length of minute hand stirring-head are greater than by the thickness of welding cap plate, stirring
Needle diameter is equal to by the thickness of weldering gusset, and the structure of the first homogeneity fixture and the second homogeneity fixture is cuboid, material with welded
Cover board is identical by the material of weldering gusset, and the first positioning unit and the second positioning unit structure are identical, is symmetrically mounted on dovetail groove
On platform, the side upper end of the first positioning unit and the second positioning unit opposite face is machined with the first side groove and second side respectively
Groove is respectively used to the first homogeneity fixture of installation and the second homogeneity fixture, the first side groove and second side groove structure size phase
Together, the first positioning unit and the second positioning unit upper surface are machined with the first upper groove and the second upper groove respectively, are provided commonly for
Installation is by welding cap plate, and the first upper groove and the second upper groove structure size are identical, and third positioning unit is mounted on the first positioning list
On dovetail groove platform between member and the second positioning unit, third positioning unit is positioned to by weldering gusset vertical direction, by weldering muscle
Plate side is by the first homogeneity fixture and the second homogeneity clamp, and the first homogeneity fixture and the second homogeneity fixture are to by weldering gusset water
Square to positioning, the first upper groove of the first positioning unit and the second upper groove of the second positioning unit are mounted on by welding cap plate
It is interior, and compressed by the first pressing plate and the second pressing plate, the first positioning unit, the second positioning unit, the first pressing plate and the second pressing plate pair
It is vertically and horizontally positioned by welding cap plate；
In welding process, by the lower end surface of welding cap plate and by the upper surface of weldering gusset, the first homogeneity fixture and the second homogeneity
The upper surface of fixture is close to, and is close to by weldering gusset side with the side end face of the first homogeneity fixture and the second homogeneity fixture, large needle stirs
Head is mixed to move with selected speed of welding along welding direction, the first homogeneity fixture, the second homogeneity fixture, by welding cap plate, by weldering muscle
Plate and device rest part are remain stationary, until completing Friction Stir Welding.
Further, the mixing needle length of minute hand stirring-head is greater than by the big 0.2~0.5mm of the thickness of welding cap plate, mixing needle
Diameter be equal to by the thickness of weldering gusset.
Further, the length and thickness of the first homogeneity fixture and the second homogeneity fixture are and by the length and thickness of weldering gusset
Spend identical, the height of the first homogeneity fixture and the second homogeneity fixture is 5~10 times for being welded gusset thickness.
Further, the material of the first homogeneity fixture and the second homogeneity fixture with by welding cap plate or by the material phase of weldering gusset
It together, is aluminium alloy or magnesium alloy.
Further, the length of the first side groove and second side groove is equal to the first homogeneity fixture and the second homogeneity fixture
Length, depth are 0.2~0.5mm smaller than the thickness of the first homogeneity fixture and the second homogeneity fixture, are highly equal to the first homogeneity fixture
With the height of the second homogeneity fixture.
Further, the length of the first upper groove and the second upper groove is 0.2~0.5mm bigger than by the length of welding cap plate, deep
Degree is equal to by the thickness of welding cap plate, and width is equal to by the half of welding cap board width.
Further, three dovetail grooves are machined on dovetail groove platform.
Further, third positioning unit includes being welded gusset supporting module and two connection components, is supported by weldering gusset
For module by two connection component connections, connection component includes bolt, the first nut, the first washer, the second nut, third spiral shell
Female, second packing ring and third washer, the lower part of bolt are mounted on dovetail groove by third nut, second packing ring and third washer
Interior, the first washer and the second nut are from top to bottom sequentially arranged at the top of bolt, are mounted on first by weldering gusset supporting module
Washer upper end is simultaneously positioned by the first nut.
The present invention also provides a kind of welding sides using homogeneity fixture auxiliary single track Friction Stir Welding T connector device
Method, it comprising the following three steps:
Step 1: the assembly of T connector:
First: on dovetail groove platform, the third nut of middle part dovetail groove two sides is screwed down, by third positioning unit
Bottom is fixed；
Second: the first homogeneity fixture and the second homogeneity fixture are separately mounted to the first positioning unit and the second positioning unit
In the first locating slot and the second locating slot of side；
Third: it is using the middle part dovetail groove center of dovetail groove platform as benchmark line, the first positioning unit is mobile to reference line,
Until when the first homogeneity fixture outer surface reaches the half by the thickness of weldering gusset relative to the horizontal distance of reference line, point
The first positioning unit is not fixed with three bolts；
4th: will be disposed vertically in the gap between the first positioning unit and the second positioning unit by weldering gusset, make it
Lower surface is fitted closely with third positioning unit by weldering gusset supporting module upper surface；
5th: the second nut of rotation adjusts the first washer and by the upright position of weldering gusset supporting module, makes to be welded gusset
Upper surface and the first homogeneity fixture and the second homogeneity fixture upper surface are in sustained height, are screwed down the first nut with fixation
Gusset supporting module；
6th: the second positioning unit is mobile to the middle part dovetail groove central datum line of dovetail groove platform, make to be welded gusset
Two sides fitted closely respectively with the first homogeneity fixture and the second homogeneity fixture, and first is determined with three bolts respectively
Bit location is fixed；
7th: the first upper groove and second of the first positioning unit and the second positioning unit top will be placed in by welding cap plate
It in upper groove, is compressed by the first pressing plate and the second pressing plate by welding cap plate, the final assembly for realizing T connector；
Step 2: the installation and welding preparation of minute hand stirring-head:
Minute hand stirring-head is installed on welding machine main shaft by fastening screw, is stirred by the high-speed rotation realization of welding machine main shaft
Friction welding is mixed, adjustment minute hand stirring-head selectes welding condition, and be input to relative to by the inclination angle of welding cap plate before welding
In the control system of friction stir welding machine；
Step 3: being stirred friction welding:
When starting welding, the mixing needle of minute hand stirring-head is gradually penetrated with selected revolving speed by welding cap plate, when mixing needle is worn
It by welding cap plate and is gradually penetrated thoroughly by after weldering gusset certain length, minute hand stirring-head is with selected speed of welding along welding direction
Mobile, the first homogeneity fixture, the second homogeneity fixture are remain stationary by welding cap plate, by weldering gusset and device rest part, until
Complete entire stir friction welding process.
Further, it is 0.2~0.5mm that the mixing needle of the minute hand stirring-head in step 3, which is penetrated by the length of weldering gusset,.
Further, the welding inclination angle that the minute hand stirring-head on friction stir welding machine is mounted in step 2 is 1~3 °.
The present invention has following improvement effect compared with prior art:
1, the present invention is by design minute hand stirring-head and homogeneity fixture, and mixing needle is enable to penetrate to be directed reach by welding cap plate and welded
Gusset successfully converts lap joint for T connector and welds, avoids fillet weld seam.In addition, mixing needle length is big
In by welding cap plate thickness and diameter is equal to by weldering gusset thickness, the overlap joint interface between cover board and gusset can be made to be stirred needle
It destroys completely, solves the prior art in order to avoid mixing needle and fixture collide, mixing needle diameter design is less than gusset thickness,
Cause stirring region too small, original interface fails to destroy completely, there are problems that non-soldering defect at connector root of weld, facilitates
Improve strength of joint.
2, it is docked the invention avoids corner connection twice, twice and applies the methods of auxiliary thermal source bring and be repeatedly loaded, increase
When processing, reduce production efficiency problem and connector heat-affected zone softened degree increase problem.The present invention only needs a welding
T connector is obtained, welding process heat input is effectively reduced, working hour is saved and improves production efficiency.
3, the homogeneity fixture in the present invention, when welding, can directly cut part base material as homogeneity fixture, it is special to be not required to preparation
Determine clamp material, does not need to prepare fillet on fixture in advance, time saving material-saving.In welding process, homogeneity clamp material softens energy
Certain deformation occurs for the extruding that enough guarantee T connector root of weld is in mixing needle, so that round-corner transition is automatically formed, and also gram
It has taken steel clamps single bridging method and problem is thinned due to being difficult to suitable dimension fillet bring cover board.In short, this hair
It is bright to propose a kind of new thought of homogeneity fixture auxiliary single track Friction Stir Welding T connector, high-quality high-strength T can be obtained
Type joint.
Detailed description of the invention
Fig. 1 is the overall structure diagram of homogeneity fixture auxiliary single track Friction Stir Welding T connector device in the present invention；
Fig. 2 is the partial structure diagram of homogeneity fixture auxiliary single track Friction Stir Welding T connector device in the present invention；
Fig. 3 is the structural schematic diagram of the first positioning unit；
Fig. 4 is T connector cross-sectional view in welding process in the present invention；
Fig. 5 is in the present invention by weldering gusset vertical direction positioning unit schematic diagram；
Fig. 6 is the cross-sectional view of Fig. 5；
Fig. 7 is that homogeneity fixture assists single track Friction Stir Welding T connector pictorial diagram in the present invention.Wherein Fig. 7 (a) is
Appearance of weld, Fig. 7 (b) are section of weld joint formings.
Wherein 1 is minute hand stirring-head, and 2 be the first homogeneity fixture, and 3 be the second homogeneity fixture, and 4 is, by welding cap plate, 5 are quilt
Gusset is welded, 6 be the first positioning unit, and 7 be the second positioning unit, and 8 be dovetail groove platform, and 9 be the first pressing plate, and 10 be the second pressure
Plate, 11 be third positioning unit.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1 to Fig. 6, a kind of homogeneity fixture of present embodiment is auxiliary
Help single track Friction Stir Welding T connector device, it is characterised in that: it includes minute hand stirring-head 1, the first homogeneity fixture 2,
Two homogeneity fixtures 3, the first positioning unit 6, the second positioning unit 7, dovetail groove platform 8, the first pressing plate 9, the second pressing plate 10 and
Three positioning units 11, the mixing needle length of minute hand stirring-head 1 are greater than by the thickness of welding cap plate 4, and mixing needle diameter is equal to by weldering muscle
The structure of the thickness of plate 5, the first homogeneity fixture 2 and the second homogeneity fixture 3 be cuboid, material with by welding cap plate 4 or by weldering muscle
The material of plate 5 is identical, and the first positioning unit 6 is identical with 7 structure of the second positioning unit, is symmetrically mounted on dovetail groove platform 8,
The side upper end of 7 opposite face of first positioning unit 6 and the second positioning unit is machined with the first side groove 6-1 and second side respectively
Groove 7-1 is respectively used to the first homogeneity fixture 2 of installation and the second homogeneity fixture 3, the first side groove 6-1 and second side groove 7-
1 structure size is identical, and the first positioning unit 6 and 7 upper surface of the second positioning unit are machined with the first upper groove 6-2 and respectively
Two upper groove 7-2 are provided commonly for installation by welding cap plate 4, and the first upper groove 6-2 and the second upper groove 7-2 structure size are identical,
Third positioning unit 11 is mounted on the dovetail groove platform 8 between the first positioning unit 6 and the second positioning unit 7, third positioning
11 pairs of unit are positioned by 5 vertical direction of weldering gusset, are pressed from both sides by 5 side of weldering gusset by the first homogeneity fixture 2 and the second homogeneity fixture 3
Tightly, 3 pairs of the first homogeneity fixture 2 and the second homogeneity fixture are positioned by 5 horizontal direction of weldering gusset, are mounted on first by welding cap plate 4 and are determined
In first upper groove 6-2 of bit location 6 and the second upper groove 7-2 of the second positioning unit 7, and by the first pressing plate 9 and the second pressure
Plate 10 compresses, and the first positioning unit 6, the second positioning unit 7, the first pressing plate 9 and 10 pairs of the second pressing plate are by the vertical side of welding cap plate 4
It is positioned to horizontal direction.
In welding process, by the lower end surface of welding cap plate 4 with it is same by the upper surface of weldering gusset 5, the first homogeneity fixture 2 and second
The upper surface of matter fixture 3 is close to, and is close to by 5 side of weldering gusset with the side end face of the first homogeneity fixture 2 and the second homogeneity fixture 3,
Large needle stirring-head 1 is moved with selected speed of welding along welding direction, the first homogeneity fixture 2, the second homogeneity fixture 3, by welding cap
Plate 4 is remain stationary by weldering gusset 5 and device rest part, until completing Friction Stir Welding.
Specific embodiment 2: illustrating present embodiment, the minute hand stirring-head of present embodiment in conjunction with Fig. 1, Fig. 2 and Fig. 4
1 mixing needle length is 0.2~0.5mm bigger than by the thickness of welding cap plate 4, and the diameter of mixing needle is equal to by the thickness of weldering gusset 5.
So set, convenient for penetrating cover board 4 and entering gusset 5.Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: illustrate present embodiment in conjunction with Fig. 2 to Fig. 5, present embodiment by welding cap plate 4 and welded
The material of gusset 5 is identical, the first homogeneity fixture 2 and the second homogeneity fixture 3 with by welding cap plate 4 and by the material phase of weldering gusset 5
Together.So set, being easy to implement the welding of same material.Other compositions and connection relationship and specific embodiment one or two-phase
Together.
It by welding cap plate 4 and is welded specific embodiment 4: illustrate present embodiment in conjunction with Fig. 2 to Fig. 5, in present embodiment
The material of gusset 5 is aluminium alloy, and the material of homogeneity fixture 2 and homogeneity fixture 3 also uses aluminium alloy.Aluminum fixture is arranged such,
Rather than the higher steel fixture of hardness is used, the mixing needle that can be avoided minute hand stirring-head 1 occurs wear-out failure and guarantees to weld
The good forming of seam.Other compositions and connection relationship are identical as any one of specific embodiment one to three.
The advantages of present embodiment is using aluminium alloy homogeneity fixture: first, it can save working hour and material.It is directly cut out when welding
It takes part base material as auxiliary clamp, does not need to prepare other materials.Second, guarantee forming.When welding aluminum alloy, using aluminium
Alloy makees fixture.When welding clamp material softening can guarantee T connector root of weld be in mixing needle extruding occur it is certain
Deformation, to form round-corner transition.Third protects mixing needle.Presently disclosed patent is all using steel clamps, in order to keep away
Exempt from mixing needle and steel clamps are collided, general mixing needle diameter is all smaller than by weldering gusset thickness, causes to be stirred region on gusset
It is limited.The method for the homogeneity fixture auxiliary that this patent proposes also corresponds to even if mixing needle collides with fixture by wlding
Material and mixing needle collision, mixing needle will not be damaged, it is possible to mixing needle diameter maximum is increased to it is identical as gusset thickness,
After mixing needle increases, non-soldering defect can be effectively eliminated.
Specific embodiment 5: embodiment is described with reference to Fig. 2, the first homogeneity fixture 2 and second of present embodiment
The structure size of homogeneity fixture 3 is identical, is cuboid, the length and thickness of the first homogeneity fixture 2 and the second homogeneity fixture 3
Identical as by the length of weldering gusset 5 and thickness, the first homogeneity fixture 2 and 3 height of the second homogeneity fixture are to be welded 5 thickness of gusset
5~10 times of degree.So set, on the other hand guaranteeing that first is same on the one hand convenient for directly producing homogeneity fixture from base material to be welded
3 pairs of matter fixture 2 and the second homogeneity fixture carry out reliable grip positioning by weldering gusset 5.Other compositions and connection relationship and specific reality
It is identical to apply any one of mode one to four.
Specific embodiment 6: embodiment is described with reference to Fig. 3, the first homogeneity fixture 2 and second in present embodiment
The thickness of homogeneity fixture 3 is 0.3mm bigger than the depth of groove that the first positioning unit 6 and 7 side upper end of the second positioning unit open up.
Jaw thickness and depth of groove is arranged such, can make to be welded two sides of gusset 5 respectively with the first homogeneity fixture 2 and second
Homogeneity fixture 3 fits closely, and guarantees that welding process is stablized and carries out.Other compositions and connection relationship and specific embodiment one to
Any one of five is identical.
Specific embodiment 7: embodiment is described with reference to Fig. 1, it is machined on the dovetail groove platform 8 of present embodiment
Three dovetail groove 8-1.So set, for the first positioning unit 6, the water of the second positioning unit 7 and third positioning unit 11
Square to positioning adjust.Other compositions and connection relationship are identical as any one of specific embodiment one to six.
Specific embodiment 8: illustrating present embodiment, the third positioning unit 11 of present embodiment in conjunction with Fig. 5 and Fig. 6
Including passing through two connection components by weldering gusset supporting module 11-3 by weldering gusset supporting module 11-3 and two connection components
Connection, connection component includes bolt 11-1, the first nut 11-2, the first washer 11-4, the second nut 11-5, third nut 11-
6, the lower part of second packing ring 11-7 and third washer 11-8, bolt 11-1 pass through third nut 11-6, second packing ring 11-7 and the
Three washer 11-8 are mounted in dovetail groove 8-1, and the first washer 11-4 and the second nut 11-5 are from top to bottom sequentially arranged at bolt
The top of 11-1 is mounted on the second upper end nut 11-5 and is positioned by the first nut 11-2 by weldering gusset supporting module 11-3.
So set, for by weldering gusset 5 carry out vertical direction support, prevent in welding process because by weldering gusset 5 by stirring-head
Axial force and occur to move straight down, cause welding fail.Other compositions and connection relationship and specific embodiment one to seven
Any one of it is identical.
The specific embodiment of the device of single track Friction Stir Welding T connector of the invention:
The material of first homogeneity fixture 2 and the second homogeneity fixture 3 is identical as by the material of welding cap plate and gusset, to guarantee
Realize same material connection and good appearance of weld；The mixing needle length of minute hand stirring-head 1 is bigger than by the thickness of welding cap plate 4
The diameter of 0.2mm, mixing needle are equal to by the thickness of weldering gusset 5；The structure size of first homogeneity fixture 2 and the second homogeneity fixture 3
It is identical, it is cuboid, length and thickness are identical as by weldering gusset 5, and height is to be welded the 5~10 of 5 thickness of gusset
Times；First positioning unit 6 and the second positioning unit 7 have symmetrical structure, and side upper end opens up two of identical size respectively
Groove, for installing the first homogeneity fixture 2 and the second homogeneity fixture 3, groove length is equal to homogeneity fixture length, depth of groove
0.2~0.5mm smaller than homogeneity jaw thickness, groove height is equal to homogeneity fixture height；First positioning unit 6 and the second positioning
7 upper surface of unit opens up identical two grooves of size respectively, and for installing by welding cap plate 4, groove length ratio is by welding cap plate 4
The big 0.2~0.5mm of length, depth of groove is equal to by the thickness of welding cap plate 4, and recess width is equal to by the one of 4 width of welding cap plate
Half；Three dovetail grooves are machined on dovetail groove platform 8, it is single for the first positioning unit 6, the second positioning unit 7 and third positioning
The horizontal direction of member 11, which positions, to be adjusted；First positioning unit 6, the second positioning unit 7, the first pressing plate 9 and the second pressing plate 10 are used for
By the positioning of welding cap plate 4 horizontal direction and vertical direction, the first positioning unit 6, the second positioning unit 7, the first homogeneity fixture 2
It is used to be positioned by the horizontal direction of weldering gusset 5 with the second homogeneity fixture 3, third positioning unit 11 is used for the vertical direction of gusset 5
Positioning；Third positioning unit 11 by bolt 11-1, the first nut 11-2, by weldering gusset supporting module 11-3, the first washer 11-
4, the second nut 11-5, third nut 11-6, second packing ring 11-7 and third washer 11-8 composition, third nut 11-6, second
Being applied in combination for washer 11-7 and third washer 11-8 is fixed on the one end bolt 11-1 in dovetail groove, the second nut 11-5 and
Being applied in combination of first washer 11-4 makes to be welded gusset supporting module 11-3 and reaches predetermined position, finally by the first nut 11-
2 realize by the positioning of weldering gusset supporting module 11-3.
Specific embodiment 9: illustrating present embodiment, the single track agitating friction weldering of present embodiment in conjunction with Fig. 1 to Fig. 7
The welding method of the auxiliary device of T connector is connect, it comprising the following three steps:
Step 1: the assembly of T connector:
First: on dovetail groove platform 8, the third nut 11-6 of middle part dovetail groove two sides is screwed down, with this by third
The bottom of positioning unit 11 is fixed；
Second: the first homogeneity fixture 2 and the second homogeneity fixture 3 are separately mounted to determining with second for the first positioning unit 6
In the first locating slot 6-1 and the second locating slot 7-1 of 7 side of bit location；
Third: using the middle part dovetail groove center of dovetail groove platform 8 as benchmark line, the first positioning unit 6 is moved to reference line
It is dynamic, until 2 outer surface of the first homogeneity fixture reaches relative to the horizontal distance of reference line by the half of the thickness of weldering gusset 5
When, it is with three bolts that the first positioning unit 6 is fixed respectively；
4th: will be disposed vertically in the gap between the first positioning unit 6 and the second positioning unit 7, make by weldering gusset 5
Its lower surface is fitted closely with third positioning unit 11 by weldering gusset supporting module 11-3；
5th: the second nut 11-5 of rotation adjusts the first washer 11-4 and by the vertical position of weldering gusset supporting module 11-3
It sets, makes to be welded 5 upper surface of gusset and the first homogeneity fixture 2 and 3 upper surface of the second homogeneity fixture is in sustained height, to backspin
Tight first nut 11-2 is to fix gusset supporting module 11-3；
6th: the second positioning unit 7 is mobile to the middle part dovetail groove central datum line of dovetail groove platform 8, make to be welded muscle
Two sides of plate 5 are fitted closely with the first homogeneity fixture 2 and the second homogeneity fixture 3 respectively, and respectively with three bolts by
Locating unit 7 is fixed；
7th: the first upper groove 6-2 on 7 top of the first positioning unit 6 and the second positioning unit will be placed in by welding cap plate 4
It in the second upper groove 7-2, is compressed by the first pressing plate 9 and the second pressing plate 10 by welding cap plate 4, the final dress for realizing T connector
Match；
Step 2: the installation and welding preparation of minute hand stirring-head 1:
Minute hand stirring-head 1 is installed on welding machine main shaft by fastening screw, passes through the high-speed rotation (300 of welding machine main shaft
~2000rpm) realize Friction Stir Welding；
For adjustment minute hand stirring-head 1 relative to by the inclination angle of welding cap plate 4, welding condition is the speed of mainshaft before weldering
800rpm, speed of welding 100mm/min, 1.5 ° of tilt angle and the shaft shoulder press depth 0.2mm, and are input to friction stir welding machine
Control system in；
Step 3: being stirred friction welding:
When starting welding, the mixing needle of minute hand stirring-head 1 is gradually penetrated with selected revolving speed by welding cap plate 4, works as mixing needle
It penetrates by welding cap plate 4 and gradually penetrates by after 5 certain length of weldering gusset, minute hand stirring-head 1 is with selected speed of welding along welding
Direction is mobile, until completing entire stir friction welding process.
Finally obtained homogeneity fixture auxiliary single track Friction Stir Welding T connector is as shown in Figure 5.
Specific embodiment 10: illustrate present embodiment in conjunction with Fig. 1, Fig. 2 and Fig. 4, minute hand stirring-head in present embodiment
The length of 1 mixing needle is 0.2mm bigger than by the thickness of welding cap plate 4, and the diameter of mixing needle is equal to by the thickness of weldering gusset 5.So
Mixing needle is set, cover board 4 can be penetrated and enters gusset 5, completely eliminates original overlap joint interface, obtains the overlap joint of high quality
Connector, other compositions and connection relationship are identical as any one of specific embodiment one to nine.
Minute hand stirring in the step of specific embodiment 11: embodiment is described with reference to Fig. 4, present embodiment three
It is 0.2~0.5mm that first 1 mixing needle, which is penetrated by the length of weldering gusset 5,.So set, being stirred when being due to Welded lap joint
Mixing needle, to penetrate gusset length too long or too short, can not all form high-quality lap joint, be when mixing needle penetrates gusset length
When 0.2~0.5mm, joint quality is higher.Other compositions and any one of connection relationship and specific embodiment one to ten phase
Together.
Specific embodiment 12: embodiment is described with reference to Fig. 4, and friction stir welding machine is mounted in present embodiment
On minute hand stirring-head 1 mixing needle penetrate by the depth of weldering gusset 5 be 0.3mm.So set, can effectively destroy by welding cap
Plate and the overlap joint interface by weldering gusset, obtain the lap joint of high quality.Other compositions and connection relationship and specific embodiment
One to any one of 11 is identical.
Stirring is mounted in the step of specific embodiment 13: embodiment is described with reference to Fig. 4, present embodiment two
The welding inclination angle of minute hand stirring-head 1 on friction-welding machine is 1~3 °.So set, reinforcing stirring-head shaft shoulder Resistance of Weld Metal
Forging and stamping effect avoids generating the welding defects such as hole.Appoint in other compositions and connection relationship and specific embodiment one to 12
Anticipate a Xiang Xiangtong.
Specific embodiment 14: embodiment is described with reference to Fig. 4, and present embodiment is mounted on friction stir welding machine
On minute hand stirring-head 1 welding inclination angle be 1.5 °.So set, can effectively reinforce stirring-head shaft shoulder Resistance of Weld Metal
Forging and stamping effect avoids generating the welding defects such as hole, appoint in other compositions and connection relationship and specific embodiment one to 13
Anticipate a Xiang Xiangtong.
Claims (11)
1. a kind of homogeneity fixture assists single track Friction Stir Welding T connector device, it is characterised in that: it includes minute hand stirring-head
(1), the first homogeneity fixture (2), the second homogeneity fixture (3), the first positioning unit (6), the second positioning unit (7), dovetail groove are flat
Platform (8), the first pressing plate (9), the second pressing plate (10) and third positioning unit (11), the mixing needle length of minute hand stirring-head (1) are big
In by the thickness of welding cap plate (4), mixing needle diameter is equal to by the thickness of weldering gusset (5), the first homogeneity fixture (2) and the second homogeneity
The structure of fixture (3) is cuboid, the material of the first homogeneity fixture (2) and the second homogeneity fixture (3) and by welding cap plate (4) or by
The material for welding gusset (5) is identical, and the first positioning unit (6) is identical with the second positioning unit (7) structure and is symmetrically mounted on dovetail
On slot platform (8), the side upper end of the first positioning unit (6) and the second positioning unit (7) opposite face is machined with the first side respectively
It is same that groove (6-1) and second side groove (7-1), the first side groove (6-1) and second side groove (7-1) are respectively used to installation first
Matter fixture (2) and the second homogeneity fixture (3), the first side groove (6-1) is identical as second side groove (7-1) structure size, and first
The upper surface of positioning unit (6) and the second positioning unit (7) is machined with the first upper groove (6-2) and the second upper groove (7- respectively
2) installation, is provided commonly for by welding cap plate (4), and the first upper groove (6-2) is identical with the second upper groove (7-2) structure size, third
Positioning unit (11) is mounted on the dovetail groove platform (8) between the first positioning unit (6) and the second positioning unit (7), third
Positioning unit (11) is positioned to by weldering gusset (5) vertical direction, by the side of weldering gusset (5) by the first homogeneity fixture (2) and the
Two homogeneity fixtures (3) clamp, and the first homogeneity fixture (2) and the second homogeneity fixture (3) are positioned to by weldering gusset (5) horizontal direction,
Second on the first upper groove (6-2) and the second positioning unit (7) on first positioning unit (6) is mounted on by welding cap plate (4)
In upper groove (7-2), and compressed by the first pressing plate (9) and the second pressing plate (10), the first positioning unit (6), the second positioning unit
(7), the first pressing plate (9) and the second pressing plate (10) are vertically and horizontally positioned to by welding cap plate (4)；
In welding process, by the lower end surface of welding cap plate (4) and by the upper surface of weldering gusset (5), the first homogeneity fixture (2) and second
The upper surface of homogeneity fixture (3) is close to, by the side of weldering gusset (5) side and the first homogeneity fixture (2) and the second homogeneity fixture (3)
End face is close to, and large needle stirring-head (1) is moved with selected speed of welding along welding direction, the first homogeneity fixture (2), the second homogeneity
Fixture (3) is remain stationary by welding cap plate (4), by weldering gusset (5) and device rest part, until completing Friction Stir Welding.
2. homogeneity fixture according to claim 1 assists single track Friction Stir Welding T connector device, it is characterised in that:
The mixing needle length of minute hand stirring-head (1) is greater than by the big 0.2~0.5mm of thickness of welding cap plate (4), and the diameter of mixing needle is equal to quilt
Weld the thickness of gusset (5).
3. homogeneity fixture according to claim 2 assists single track Friction Stir Welding T connector device, it is characterised in that:
The length and thickness of first homogeneity fixture (2) and the second homogeneity fixture (3) are identical as by the length of weldering gusset (5) and thickness,
The height of first homogeneity fixture (2) and the second homogeneity fixture (3) is 5~10 times for being welded gusset (5) thickness.
4. homogeneity fixture according to claim 3 assists single track Friction Stir Welding T connector device, it is characterised in that:
The material of first homogeneity fixture (2) and the second homogeneity fixture (3) is identical as by welding cap plate (4) or by the material of weldering gusset (5), is
Aluminium alloy or magnesium alloy.
5. homogeneity fixture according to claim 4 assists single track Friction Stir Welding T connector device, it is characterised in that:
The length of first side groove (6-1) and second side groove (7-1) is equal to the first homogeneity fixture (2) and the second homogeneity fixture (3)
Length, depth are 0.2~0.5mm smaller than the thickness of the first homogeneity fixture (2) and the second homogeneity fixture (3), and it is same to be highly equal to first
The height of matter fixture (2) and the second homogeneity fixture (3).
6. homogeneity fixture according to claim 5 assists single track Friction Stir Welding T connector device, it is characterised in that:
The length ratio of first upper groove (6-2) and the second upper groove (7-2) is by the big 0.2~0.5mm of length of welding cap plate (4), depth etc.
In by the thickness of welding cap plate (4), width is equal to by the half of welding cap plate (4) width.
7. homogeneity fixture according to claim 6 assists single track Friction Stir Welding T connector device, it is characterised in that:
Three dovetail grooves (8-1) are machined on dovetail groove platform (8).
8. homogeneity fixture according to claim 7 assists single track Friction Stir Welding T connector device, it is characterised in that:
Third positioning unit (11) includes being welded gusset supporting module (11-3) and two connection components, by weldering gusset supporting module (11-
3) by the connection of two connection components, connection component include bolt (11-1), the first nut (11-2), the first washer (11-4),
Second nut (11-5), third nut (11-6), second packing ring (11-7) and third washer (11-8), the lower part of bolt (11-1)
It is mounted in dovetail groove (8-1) by third nut (11-6), second packing ring (11-7) and third washer (11-8), the first washer
(11-4) and the second nut (11-5) are from top to bottom sequentially arranged at the top of bolt (11-1), by weldering gusset supporting module (11-
3) it is mounted on the first washer upper end (11-4) and is positioned by the first nut (11-2).
9. a kind of assist single track Friction Stir Welding T connector using homogeneity fixture described in any one of claim 1 to 8
The welding method of device, it is characterised in that: it comprising the following three steps:
Step 1: the assembly of T connector:
First: on dovetail groove platform (8), being screwed down the third nut (11-6) of middle part dovetail groove two sides, third is positioned
The bottom of unit (11) is fixed；
Second: the first homogeneity fixture (2) and the second homogeneity fixture (3) being separately mounted to the first positioning unit (6) and second and determined
In first locating slot (6-1) and the second locating slot (7-1) of bit location (7) side；
Third: using the middle part dovetail groove center of dovetail groove platform (8) as benchmark line, the first positioning unit (6) is moved to reference line
It is dynamic, until the first homogeneity fixture (2) outer surface reaches relative to the horizontal distance of reference line by the one of the thickness of weldering gusset (5)
It is with three bolts that the first positioning unit (6) are fixed respectively when half；
4th: will be disposed vertically in the gap between the first positioning unit 6 and the second positioning unit 7, make under it by weldering gusset 5
Surface is fitted closely with third positioning unit (11) by the upper surface weldering gusset supporting module (11-3)；
5th: rotation the second nut (11-5) adjusts the first washer (11-4) and by the vertical of weldering gusset supporting module (11-3)
Position makes to be welded gusset (5) upper surface and the first homogeneity fixture (2) and the second homogeneity fixture (3) upper surface is in sustained height,
The first nut (11-2) is screwed down to fix gusset supporting module (11-3)；
6th: the second positioning unit (7) is mobile to the middle part dovetail groove central datum line of dovetail groove platform (8), make to be welded muscle
Two sides of plate (5) are fitted closely with the first homogeneity fixture (2) and the second homogeneity fixture (3) respectively, and respectively with three spiral shells
Bolt is fixed by the first positioning unit (7)；
7th: the first upper groove of the first positioning unit (6) and the second positioning unit (7) top will be placed in by welding cap plate (4)
In (6-2) and the second upper groove (7-2), compressed by the first pressing plate (9) and the second pressing plate (10) by welding cap plate (4), it is final real
The assembly of existing T connector；
Step 2: the installation and welding preparation of minute hand stirring-head (1):
Minute hand stirring-head (1) is installed on welding machine main shaft by fastening screw, is stirred by the high-speed rotation realization of welding machine main shaft
Friction welding is mixed, adjustment minute hand stirring-head (1) selectes welding condition, and defeated relative to by the inclination angle of welding cap plate (4) before welding
Enter into the control system of friction stir welding machine；
Step 3: being stirred friction welding:
When starting welding, the mixing needle of minute hand stirring-head (1) is gradually penetrated with selected revolving speed by welding cap plate (4), works as mixing needle
It penetrates by welding cap plate (4) and gradually penetrates by after weldering gusset (5) certain length, minute hand stirring-head (1) is with selected speed of welding
Moved along welding direction, the first homogeneity fixture (2), the second homogeneity fixture (3), by welding cap plate (4), by weldering gusset (5) and device
Rest part is remain stationary, until completing entire stir friction welding process.
10. the welding method of homogeneity fixture auxiliary single track Friction Stir Welding T connector device according to claim 9,
It is characterized by: it is 0.2~0.5mm that the mixing needle of the minute hand stirring-head (1) in step 3, which is penetrated by the length of weldering gusset (5),.
11. the welding method of homogeneity fixture auxiliary single track Friction Stir Welding T connector device according to claim 10,
It is characterized by: the welding inclination angle for the minute hand stirring-head (1) being mounted on friction stir welding machine in step 2 is 1~3 °.
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| CN201910244073.8A CN110039170B (en) | 2019-03-28 | 2019-03-28 | Device and method for assisting single-pass friction stir welding of T-shaped joint by using homogeneous clamp |
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| CN112577839B (en) * | 2020-11-25 | 2022-09-13 | 中车长春轨道客车股份有限公司 | Fatigue test method for friction stir welding profile structure of high-speed motor train unit train body |
| CN113560750A (en) * | 2021-07-20 | 2021-10-29 | 南京航空航天大学 | Flexible automatic clamping device and method for laser penetration welding of back of T-shaped structure |
| CN113560750B (en) * | 2021-07-20 | 2023-03-10 | 南京航空航天大学 | Flexible automatic clamping device and method for laser penetration welding of back of T-shaped structure |
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