CN107649815A - Doorframe welding frock and its peace tune method before a kind of right side - Google Patents
Doorframe welding frock and its peace tune method before a kind of right side Download PDFInfo
- Publication number
- CN107649815A CN107649815A CN201711058094.8A CN201711058094A CN107649815A CN 107649815 A CN107649815 A CN 107649815A CN 201711058094 A CN201711058094 A CN 201711058094A CN 107649815 A CN107649815 A CN 107649815A
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- China
- Prior art keywords
- crossbeam
- out against
- doorframe
- block
- limited block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 43
- 230000003014 reinforcing Effects 0.000 claims abstract description 13
- 239000000789 fastener Substances 0.000 claims description 21
- 230000000875 corresponding Effects 0.000 claims description 8
- 108020001143 ABCD Proteins 0.000 claims description 7
- 210000003127 Knee Anatomy 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 230000002459 sustained Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 2
- 239000010962 carbon steel Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/24—Frameworks
Abstract
The invention discloses doorframe welding frock before one kind right side and its peace tune method, apply in carbon steel welding field, frock holds out against fixture, limited block including screw thread, pushes quick clip, cushion block, reinforcing plate pad, limited block, holds out against quick clip, column, crossbeam；Peace tune method is installed with component, leveling, then is installed as criterion.The welding of doorframe assembly is group pair by hand before mainly solving right side at present, determines group to size by tape measure, group is unstable to size, and manual group slower to speed, and production efficiency is relatively low；Fixed without frock clamp, the problem of postwelding is also easy to produce welding deformation.The present invention can be adjusted by the ingehious design and effective peace of welding tooling, inner width, Nei Gao and Diagonal Dimension before on the right side of making in doorframe production process are controlled, welding deformation reduces, dimensional discrepancy is low, product qualification rate is high and stably, shorten single-piece production man-hour simultaneously, improve the production efficiency of aluminium alloy container body.
Description
Technical field
The invention belongs to carbon steel welding field, and in particular to doorframe welding frock and its peace tune side before a kind of right side
Method.
Background technology
Aluminium alloy container body is because with material is light, good characteristic, the application in the industry such as corrosion-resistant are more and more general
Time, demand is also increasing.Further to shorten the production cycle of aluminium alloy container body, product quality is improved, it is necessary to right
Its each production process carries out lean and optimization.Doorframe assembly before right side in aluminium alloy container body right plate assembly
The optimization of welding is then a wherein important ring.
Doorframe assembly welding operation is completely by direct labor's craft group pair before right side at present, by tape measure hand dipping
To determine group to size, this method makes group unstable to size, is also easy to produce defective work, and manual group slower to speed, production
It is less efficient.And fixed before right side in doorframe assembly welding process without frock clamp, cause postwelding to be also easy to produce welding deformation,
Postwelding tune type expends the more time.
Therefore, it is necessary to doorframe welding frock and its peace tune method before working out on the right side of one kind, ensure right side front door
Inner width, Nei Gao and Diagonal Dimension in frame production process, the welding deformation in welding process is controlled, to reduce doorframe before right side
Dimensional discrepancy during group pair, size qualification and stable product are obtained, shorten doorframe single-piece production man-hour before right side, and then improve
The production efficiency of aluminium alloy container body.
The content of the invention
In view of this, it is an object of the invention to provide doorframe welding frock and its peace tune method before on the right side of one kind,
To solve the above problems.
To reach above-mentioned purpose, the present invention provides following technical scheme：
Doorframe welding frock before a kind of right side, including screw thread hold out against fixture, limited block, push quick clip, cushion block, add
Strong plate pad, limited block, hold out against quick clip, column, crossbeam；The column has eight and is perpendicularly fixed at ground, the crossbeam
There are abcd tetra-, every crossbeam and two root posts vertical connection, and four crossbeams join end to end and enclose forming surface and doorframe before right side
The corresponding structure in the sides of ABCD tetra-；The screw thread, which holds out against fixture, six pairs, sets up each two pair on tri- crossbeams of abc separately；It is described
Push and quickly accompany ten second mates, set up each three pair on four crossbeams separately；Described hold out against quickly accompanies three pairs, is each provided on d crossbeams；
The reinforcing plate pad has fourth officer, sets up separately at four end to end angles of cut of crossbeam；The limited block is vertically set on d crossbeams
One end；The limited block that fixture is arranged on a pair on crossbeam is held out against per deputy thread to support the use, and quick clip and top are pushed per pair
The cushion block that tight quick clip is arranged on crossbeam with a pair respectively supports the use.
Preferably, the screw thread, which holds out against fixture, includes screw rod and screw cushion block；Described screw rod one end is provided with rotating handles, separately
One end offers external screw thread；The screw cushion block is arranged on crossbeam, and along vertical crossbeams length direction offer with it is described outer
The internal thread hole of screw thread matching.
Preferably, the limited block includes T-shaped piece and L-type block；The T-shaped piece of bottom connection is arranged on crossbeam, top
It is bonded with the one side of L-type block, the waist-shaped hole of matching is offered on both binding faces, and be connected to each other by fastener；The L
The another side of type block is set perpendicular to screw motion direction.
Preferably, the quick clip that pushes includes pedestal I, pushes handle and depression bar；The pedestal I is connected by a transition block
Connect and be arranged on crossbeam, it is described to push handle and depression bar is respectively hinged on pedestal I, and both middle parts are mutually cut with scissors by a straight-bar
Connect；The handle that pushes can drive depression bar to be moved along vertical cushion block upper surface direction.
Preferably, the quick clip that holds out against includes pedestal II, holds out against handle and top-fastening rod；The pedestal II passes through a transition
Block connection is arranged on crossbeam, and the handle that holds out against is hinged on pedestal II, described to hold out against boom end by a knee with holding out against
Be hinged in the middle part of handle, the handle that holds out against can drive top-fastening rod to be moved along vertical cushion block side face directions.
Preferably, the cushion block is convex shape, and is connected with crossbeam by fastener.
Preferably, the limited block is L-type structure, and is connected with crossbeam by fastener.
Preferably, the reinforcing plate pad is the mutually perpendicular straight flange in both sides, while the triangle sheet knot for arc-shaped side
Structure.
The peace of doorframe welding frock adjusts method before a kind of above-mentioned right side：
(1) eight root posts are fixed on ground according to doorframe Size Distribution before right side；
(2) tetra- crossbeams of abcd are joined end to end and enclose the forming surface structure corresponding with the sides of ABCD tetra- of doorframe before right side,
And every beam vertical is fixed on column；
(3) column and crossbeam carry out the preliminary leveling of horizontal plane；
(4) cushion block is connected to the both ends of every crossbeam and each one of the upper surface in centre position by fastener；
(5) leveling of horizontal plane is carried out to cushion block, and makes all cushion block upper surfaces in sustained height；
(6) limited block is connected to each one of the inner surface at the both ends of tri- crossbeams of abc by fastener；
(7) carry out the regulation in vertical direction with interior high size according to the inner width of doorframe before right side to limited block, make same
Limited block on one crossbeam is in same straight line, and the limited block on same crossbeam is not parallel to each other or vertically；
(8) screw thread held out against into fixture, push quick clip and holds out against quick clip and be separately fixed at its each self-corresponding limited block
Or cushion block position, and check whether each structure can flexible motion；
(9) four reinforcing plate pads are connected at four end to end angles of cut of crossbeam by fastener；
(10) limited block is connected to the upper surface of d crossbeams one end by fastener.
Preferably, step (1) central post is connected with ground by swell fixture.
The beneficial effects of the present invention are：
1st, welding frock of the invention, doorframe can be made to be able to effective fixation before welding before right side, doorframe before right side
Inner width, Nei Gao and Diagonal Dimension in process of production can be controlled effectively, and the welding deformation in welding process can obtain
Reduce, the dimensional discrepancy before right side during doorframe group pair is minimized, and obtained product size is qualified and stably.
What the 2nd, the present invention used holds out against quick clip and pushes quick clip, and group can be made highly efficient to process quick, shortened
Doorframe single-piece production man-hour before right side, and then improve the production efficiency of aluminium alloy container body.
3rd, welding frock of the invention peace tune method, can make to connect more consolidation, position between the component of welding tooling
More preferable with degree, integral level and vertical precision are higher.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the non-piece installing structural representation of the present invention；
Fig. 2 is that the present invention has filled before right side structural representation after doorframe；
Fig. 3 is M regions partial enlarged drawing；
Fig. 4 is n-quadrant partial enlarged drawing.
Marked in accompanying drawing as follows：Screw thread holds out against fixture 1, screw rod 11, screw cushion block 12, limited block 2, T-shaped piece 21, L-type block
22nd, quick clip 3, pedestal I31 are pushed, handle 32, depression bar 33 is pushed, cushion block 4, reinforcing plate pad 5, limited block 6, holds out against quick clip
7th, pedestal II71, hold out against handle 72, top-fastening rod 73, column 8, crossbeam 9.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Such as Fig. 1~2, doorframe welding frock before a kind of right side, including screw thread hold out against fixture 1, limited block 2, push it is fast
Speed folder 3, cushion block 4, reinforcing plate pad 5, limited block 6, hold out against quick clip 7, column 8, crossbeam 9；The column 8 has eight and vertical
Ground is fixed on, the crossbeam 9 has abcd tetra-, every crossbeam 9 and the vertical connection of two root posts 8, and four crossbeam head and the tail phases
Company encloses the forming surface structure corresponding with the sides of ABCD tetra- of doorframe before right side；The screw thread, which holds out against fixture 1, six pairs, sets up separately
Each two is secondary on tri- crossbeams of abc；The quick clip 3 that pushes has ten second mates, sets up each three pair on four crossbeams separately；It is described to hold out against soon
Speed folder 7 has three pairs, is each provided on d crossbeams；The reinforcing plate pad 5 has fourth officer, sets up separately in four end to end angles of cut of crossbeam
Place；The limited block 6 is vertically set on one end of d crossbeams；Per deputy thread hold out against fixture 1 be arranged on a pair it is spacing on crossbeam
Block 2 supports the use, and pushes quick clip 3 per pair and holds out against that cushion block 4 that quick clip 7 is arranged on crossbeam with a pair respectively is supporting to be made
With.In Fig. 2 right side before doorframe the sides of ABCD tetra- be respectively right side before doorframe right doorframe, upper door frame, left doorframe, lower door frame, its point
Tetra- crossbeams 9 of abcd in other corresponding diagram 1.
Such as Fig. 3, further, the screw thread that the present embodiment uses, which holds out against fixture 1, includes screw rod 11 and screw cushion block 12；It is described
The one end of screw rod 11 is provided with rotating handles, and the other end offers external screw thread；The screw cushion block 12 is arranged on crossbeam, and along vertical
Crossbeam length direction offers the internal thread hole matched with the external screw thread.
Further, the limited block 2 that the present embodiment uses includes T-shaped piece 21 and L-type block 22；T-shaped piece of 21 bottoms connect
Connect and be arranged on crossbeam 9, top is bonded with the one side of L-type block 22, and the waist-shaped hole of matching is offered on both binding faces, and is led to
Fastener is crossed to be connected to each other；The another side of the L-type block 22 is set perpendicular to the direction of motion of screw rod 11.
Further, what the present embodiment used, which pushes quick clip 3, includes pedestal I31, pushes handle 32 and depression bar 33；It is described
Pedestal I31 is arranged on crossbeam 9 by transition block connection, described to push handle 32 and depression bar 33 is respectively hinged at pedestal I31
On, and both middle parts are hinged by a straight-bar；The handle 32 that pushes can drive depression bar 33 along the vertical upper surface side of cushion block 4
To motion.
Such as Fig. 4, further, what the present embodiment used, which holds out against quick clip 7, includes pedestal II71, holds out against handle 72 and hold out against
Bar 73；The pedestal II71 is arranged on crossbeam 9 by transition block connection, and the handle 72 that holds out against is hinged on pedestal II71
On, the end of top-fastening rod 73 is be hinged with holding out against the middle part of handle 72 by a knee, and the handle 72 that holds out against can drive top-fastening rod
73 move along the vertical side face directions of cushion block 4.
Further, the cushion block 4 that the present embodiment uses is connected for convex shape with crossbeam 9 by fastener.
Further, the limited block 6 that the present embodiment uses is connected for L-type structure with crossbeam 9 by fastener.
Further, the reinforcing plate pad 5 that the present embodiment uses is the mutually perpendicular straight flange in both sides, while being arc-shaped side
Triangle laminated structure.
The peace of doorframe welding frock adjusts method before a kind of above-mentioned right side：
(1) eight root posts 8 are fixed on ground according to doorframe Size Distribution before right side；
(2) tetra- crossbeams 9 of abcd are joined end to end and enclose the forming surface structure corresponding with the sides of ABCD tetra- of doorframe before right side,
And every beam vertical is fixed on column 8；
(3) column 8 and crossbeam 9 carry out the preliminary leveling of horizontal plane；
(4) cushion block 4 is connected to the both ends of every crossbeam 9 and the upper surface each one in centre position by fastener
It is individual；
(5) leveling of horizontal plane is carried out to cushion block 4, and makes all upper surfaces of cushion block 4 in sustained height；
(6) limited block 2 is connected to each one of the inner surface at the both ends of tri- crossbeams of abc by fastener；
(7) carry out the regulation in vertical direction with interior high size according to the inner width of doorframe before right side to limited block 2, make same
Limited block on one crossbeam is in same straight line, and the limited block on same crossbeam is not parallel to each other or vertically；
(8) screw thread held out against into fixture 1, push quick clip 3 and holds out against quick clip 7 that to be separately fixed at its each self-corresponding spacing
Block 2 or the position of cushion block 4, and check whether each structure can flexible motion；
(9) four reinforcing plate pads 5 are connected at four end to end angles of cut of crossbeam by fastener；
(10) limited block 6 is connected to the upper surface of d crossbeams one end by fastener.
Further, step (1) central post 8 is connected with ground by swell fixture.
According to above-mentioned steps by doorframe welding frock installation and debugging before right side, can make to connect between the component of welding tooling
More consolidation, location matches degree is more preferable, and integral level and vertical precision are higher.
After the completion of peace is adjusted, in use, doorframe workpiece before right side is positioned on its corresponding crossbeam 9, now limited block limits
The critical size such as inner width, Nei Gao and diagonal of doorframe, then rotates the screw rod 11 that screw thread holds out against fixture 1, by work before system right side
The sides of part ABC tri- are held out against to the L-type block 22 of limited block 2, the position in restriction level direction；Press push quick clip 3 push handle
32, make depression bar 33 by Work-sheet pressing to the upper surface of cushion block 4, limit the position of vertical direction；Pull out hold out against quick 7 top
Tight handle 72, make top-fastening rod 73 that the D sides of workpiece to be held out against to the position for the outer surface of cushion block 4, further correcting horizontal direction.
So far, doorframe is effectively fixed in welding frock before right side, doorframe in process of production interior before right side
Wide, Nei Gao and Diagonal Dimension, the welding deformation in welding process can be reduced and be controlled, the chi before right side during doorframe group pair
Very little deviation is minimized, and obtains size qualification and stable product.Quick clip 7 is held out against simultaneously and pushes the presence of quick clip 3, is made
Group is highly efficient to process quick, shortens doorframe single-piece production man-hour before right side, and then improve the life of aluminium alloy container body
Produce efficiency.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
- A kind of 1. doorframe welding frock before right side, it is characterised in that：Fixture, limited block are held out against including screw thread, are pushed quickly Folder, cushion block, reinforcing plate pad, limited block, hold out against quick clip, column, crossbeam；The column has eight and is perpendicularly fixed at ground Face, the crossbeam have an abcd tetra-, every crossbeam and two root posts vertical connection, and four crossbeams join end to end enclose forming surface with The corresponding structure in the sides of ABCD tetra- of doorframe before right side；The screw thread, which holds out against fixture, six pairs, sets up separately each on tri- crossbeams of abc Two is secondary；Described push quickly accompanies ten second mates, sets up each three pair on four crossbeams separately；Described hold out against quickly accompanies three pairs, is all provided with On d crossbeams；The reinforcing plate pad has fourth officer, sets up separately at four end to end angles of cut of crossbeam；The limited block is vertical It is arranged on one end of d crossbeams；The limited block that fixture is arranged on a pair on crossbeam is held out against per deputy thread to support the use, and is pushed per pair Quick clip and hold out against the cushion block that quick clip is arranged on crossbeam with a pair respectively and support the use.
- 2. doorframe welding frock before right side according to claim 1, it is characterised in that：The screw thread holds out against fixture bag Include screw rod and screw cushion block；Described screw rod one end is provided with rotating handles, and the other end offers external screw thread；The screw cushion block is set On crossbeam, and the internal thread hole matched with the external screw thread is offered along vertical crossbeams length direction.
- 3. doorframe welding frock before right side according to claim 2, it is characterised in that：The limited block includes T-shaped Block and L-type block；The T-shaped piece of bottom connection is arranged on crossbeam, and top is bonded with the one side of L-type block, on both binding faces The waist-shaped hole of matching is offered, and is connected to each other by fastener；The another side of the L-type block is set perpendicular to screw motion direction Put.
- 4. doorframe welding frock before right side according to claim 1, it is characterised in that：The quick clip that pushes includes Pedestal I, push handle and depression bar；The pedestal I is arranged on crossbeam by transition block connection, described to push handle and depression bar It is respectively hinged on pedestal I, and both middle parts are hinged by a straight-bar；The handle that pushes can drive depression bar along vertical pad Move in block upper surface direction.
- 5. doorframe welding frock before right side according to claim 1, it is characterised in that：The quick clip that holds out against includes Pedestal II, hold out against handle and top-fastening rod；The pedestal II is arranged on crossbeam by transition block connection, described to hold out against handle hinge It is connected on pedestal II, the boom end that holds out against is be hinged in the middle part of handle with holding out against by a knee, and the handle that holds out against can drive top Tight bar moves along vertical cushion block side face directions.
- 6. doorframe welding frock before right side according to claim 1, it is characterised in that：The cushion block is convex knot Structure, and be connected with crossbeam by fastener.
- 7. doorframe welding frock before right side according to claim 1, it is characterised in that：The limited block is L-type knot Structure, and be connected with crossbeam by fastener.
- 8. doorframe welding frock before right side according to claim 1, it is characterised in that：The reinforcing plate pad is two The mutually perpendicular straight flange in side, while the triangle laminated structure for arc-shaped side.
- 9. the peace of doorframe welding frock adjusts method before a kind of any described right side of claim 1~8, it is characterised in that：(1) eight root posts are fixed on ground according to doorframe Size Distribution before right side；(2) tetra- crossbeams of abcd are joined end to end and encloses the forming surface structure corresponding with the sides of ABCD tetra- of doorframe before right side, and will Every beam vertical is fixed on column；(3) column and crossbeam carry out the preliminary leveling of horizontal plane；(4) cushion block is connected to the both ends of every crossbeam and each one of the upper surface in centre position by fastener；(5) leveling of horizontal plane is carried out to cushion block, and makes all cushion block upper surfaces in sustained height；(6) limited block is connected to each one of the inner surface at the both ends of tri- crossbeams of abc by fastener；(7) carry out the regulation in vertical direction with interior high size according to the inner width of doorframe before right side to limited block, make in same horizontal stroke Limited block on beam is in same straight line, and the limited block on same crossbeam is not parallel to each other or vertically；(8) screw thread held out against into fixture, push quick clip and holds out against quick clip and be separately fixed at its each self-corresponding limited block or pad Block position, and check whether each structure can flexible motion；(9) four reinforcing plate pads are connected at four end to end angles of cut of crossbeam by fastener；(10) limited block is connected to the upper surface of d crossbeams one end by fastener.
- 10. the peace of doorframe welding frock adjusts method before right side according to claim 9, it is characterised in that：Step (1) Central post is connected with ground by swell fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058094.8A CN107649815A (en) | 2017-11-01 | 2017-11-01 | Doorframe welding frock and its peace tune method before a kind of right side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711058094.8A CN107649815A (en) | 2017-11-01 | 2017-11-01 | Doorframe welding frock and its peace tune method before a kind of right side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107649815A true CN107649815A (en) | 2018-02-02 |
Family
ID=61096548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711058094.8A Pending CN107649815A (en) | 2017-11-01 | 2017-11-01 | Doorframe welding frock and its peace tune method before a kind of right side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107649815A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108356464A (en) * | 2018-02-26 | 2018-08-03 | 劲旅环境科技有限公司 | A kind of rear door frame group mounted welder assembly |
| CN112658566A (en) * | 2020-12-15 | 2021-04-16 | 中车唐山机车车辆有限公司 | Clamping device for end wall plate welding |
| KR102419816B1 (en) * | 2022-05-06 | 2022-07-12 | 김대진 | Jig for welding golf cart frame |
-
2017
- 2017-11-01 CN CN201711058094.8A patent/CN107649815A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108356464A (en) * | 2018-02-26 | 2018-08-03 | 劲旅环境科技有限公司 | A kind of rear door frame group mounted welder assembly |
| CN112658566A (en) * | 2020-12-15 | 2021-04-16 | 中车唐山机车车辆有限公司 | Clamping device for end wall plate welding |
| KR102419816B1 (en) * | 2022-05-06 | 2022-07-12 | 김대진 | Jig for welding golf cart frame |
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