CN109175750A - A method of reducing automobile body welding deformation - Google Patents
A method of reducing automobile body welding deformation Download PDFInfo
- Publication number
- CN109175750A CN109175750A CN201810949386.9A CN201810949386A CN109175750A CN 109175750 A CN109175750 A CN 109175750A CN 201810949386 A CN201810949386 A CN 201810949386A CN 109175750 A CN109175750 A CN 109175750A
- Authority
- CN
- China
- Prior art keywords
- radiating piece
- automobile body
- radiating
- welded workpiece
- fixture
- 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.)
- Pending
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- 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
- B23K37/003—Cooling means
-
- 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
Abstract
The invention discloses a kind of methods of reduction automobile body welding deformation, the following steps are included: first fixing radiating piece on fixture, and radiating piece is pressed on welded workpiece surface using fixture, radiating piece is arranged along the bead direction of welded workpiece, at a distance of set distance between radiating piece and the weld seam of welded workpiece, welding operation then is implemented to welded workpiece；It present invention dramatically increases welding heat removes, improves radiating efficiency, to effectively reduce the generation of welding stress and post welding distortion, be conducive to guarantee body quality and body dimensions.
Description
Technical field
The present invention relates to new-energy automobile automobile body welding processing technique fields, and in particular to a kind of reduction automobile body welding deformation
Method.
Background technique
With the increase of car ownership and the strict demand of environmental regulation, the problem of environmental protection and energy-saving and emission-reduction, dashes forward further
Out, therefore body lightening is imperative.Body lightening is meant to ensure that safety, crash-worthiness, resistance to torsion and the manipulation of automobile
Car body weight is reduced on the basis of property.Substituting original body material by using light material at present is most effective reduction vehicle body
The method of weight, and have the advantages that specific gravity is small, intensity is high, formability is good and at low cost in view of aluminum material, aluminum material becomes
Common light material.
But since the pyroconductivity of aluminium is three times of steel, while the heat input of aluminium arc-welding is again relatively high, so that welding
Excess calories concentrate on weld seam and base material region in the process, generate a large amount of welding stress and residual deformation, after causing welding
Body assembly deformation is serious so that entire body assembly loses stability and its quality greatly reduces, and make vehicle body and other
Component is difficult to match and install；And it is orthopedic to vehicle body progress by artificial and machine, need to consume a large amount of man power and material,
Directly result in the increase of single vehicle cost.
The patent of Publication No. CN108080425A discloses a kind of cooling equipment of aluminium, which includes water tank and upper
It covers, is provided with water tank inlet, water outlet of water tank and water tank air inlet on water tank, is provided with upper cover water inlet, upper cover on upper lid
Water outlet and upper cover air inlet, blower are connect with upper cover air inlet and water tank air inlet, and third water pipe, third are provided in water tank
Spray head, transmission wheel, first spray head and the first water pipe, water tank middle part are provided with the first air outlet, are provided with second spray head in upper cover,
The second air outlet is provided in the middle part of upper cover.When cooling down to aluminium, the aluminium of high temperature is by external force from the one of cooling equipment
End moves to the other end, first spray head, second spray head, third spray head, the first air outlet and the second air outlet pair by transmission wheel
Aluminium is cooled down.The cooling equipment of the patent is suitable for the cooling of aluminium plate hot-roll forming, is not particularly suited for vehicle body aluminum profile
Welding, concrete reason is as follows: the weld seam of vehicle body aluminum profile is mostly three-dimensional weld seam and fusion length is longer, the heat that when welding generates
Amount is more concentrated, and along with aluminium arc-welding heat input is more compared with hot rolling, therefore the cooling velocity of the patent and efficiency are not able to satisfy aluminium vehicle
Body welding requirements；In addition the patent is that heat is then taken away by way of blowing off and evaporating by cool water shower to aluminium,
But it cannot be guaranteed that the moisture of surface of aluminum plate removes completely, and aluminium automobile body welding requires cannot have aqueous vapor residual on aluminum profile, to prevent
Only generate welding defect；The patent is a kind of containment type cooling device, and aluminium sheet, which is completely enclosed into device, carries out water cooling, and aluminium
Vehicle body three-dimensional dimension is larger, can not apply above-mentioned totally enclosed type cooling means.
Notification number is that the patent of CN207309243U discloses a kind of indeformable equipment of aluminium welding, which is will be to be welded
The aluminum component connect is fixed in anti-deformation welder, and user pulls lever later, is slided along sliding slot, and aluminum component is pulled and folds to and welds
Welding equipment is probeed into welding nozzle by soldering opening later by the opposite direction in socket part position, by reversely bending, realizes aluminum component and weldering
The balance of power is scooped out, to guarantee that aluminium remains unchanged shape in the welding process.Between anti-deformation welder and protection shell
Welding deformation is reduced filled with cooling water to provide cooling effect for welding.The applicable object of the patent is the weldering of simple aluminum pipe
Connect, be not suitable for the positioning and welding of aluminium vehicle body, concrete reason is as follows: vehicle body crew module structural member welding when need position and
It clamps, and the invention only has clamping function, therefore not can guarantee dimensional accuracy；In addition between anti-deformation device and protection shell
Filled with cooling water with cooling after being welded, and it is attached on aluminum profile after cooling water volatilization and be easy to cause welding defect, nothing
Method meets the requirement of aluminium automobile body welding.
In summary, the existing method for preventing aluminium welding deformation can not be effectively applicable to the requirement of aluminium automobile body welding, existing
Some aluminium vehicle bodies can generate moderate finite deformation in the welding process, not can guarantee body dimensions precision.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of methods of reduction automobile body welding deformation, conducive to welding heat
It removes, improves radiating efficiency, reduce the generation of welding stress and post welding distortion, body dimensions precision is effectively ensured；Conducive to saving
A large amount of man power and materials reduce production cost.
In order to solve the above technical problem, the present invention provides technical solution it is as follows:
A method of reducing automobile body welding deformation, comprising the following steps:
1) fix radiating piece on fixture, and radiating piece be pressed on welded workpiece surface using fixture, radiating piece along to
The bead direction of welding workpiece is arranged, at a distance of set distance between radiating piece and the weld seam of welded workpiece；
2) welding operation is implemented to welded workpiece.
In a wherein embodiment, the step 1) specifically includes the following steps:
S1) judge the welding type of welded workpiece, if the weld seam of welded workpiece is bar shaped weld seam, then follow the steps S2), if
The weld seam of welded workpiece is circular weld, thens follow the steps S3)；
S2 radiating piece) is fixed on fixture, and radiating piece is pressed on welded workpiece surface using fixture, and radiating piece is along item
The length direction of shape weld seam is arranged, at a distance of set distance between radiating piece and bar shaped weld seam；
S3 radiating piece) is fixed on fixture, and radiating piece is pressed on welded workpiece surface using fixture, along circular weld
Circumferentially multiple radiating pieces, at a distance of set distance between radiating piece and circular weld.
In a wherein embodiment, the radiating piece is made of copper product.
In a wherein embodiment, the radiating piece uses chromium-zirconium-copper.
In a wherein embodiment, the hardness of the chromium-zirconium-copper is HRB78~HRB83, thermal coefficient 187.
In a wherein embodiment, in the step 2 between radiating piece and the weld seam of welded workpiece at a distance of 20~
30mm。
In a wherein embodiment, the length of the radiating piece is not less than its welded workpiece width compressed
2/3rds.
In a wherein embodiment, the radiating piece includes radiating part and interconnecting piece, and the interconnecting piece is removably
It is connected on the fixture.
In a wherein embodiment, the relatively described interconnecting piece of the radiating part is inclined to set.
In a wherein embodiment, the step S3) in multiple radiating pieces along the circumferential direction of circular weld be in uniform cloth
It sets.
The invention has the following advantages: the method that reduction automobile body welding of the invention deforms, passes through setting for radiating piece
Meter and reasonable Arrangement, remove with effectively increasing welding heat, improve radiating efficiency, thus effectively reduce welding stress and
The generation of post welding distortion is conducive to guarantee body quality and body dimensions, enhances the stability of entire vehicle body；It is easy to operate, section
A large amount of man power and materials have been saved, production cost is reduced.
Detailed description of the invention
Fig. 1 is a kind of arrangement schematic diagram of radiating piece of the invention；
Fig. 2 is a kind of three dimensional structure diagram of radiating piece of the invention；
Fig. 3 is the three dimensional structure diagram of another radiating piece of the invention；
Fig. 4 is the three dimensional structure diagram of another radiating piece of the invention；
Fig. 5 is the three dimensional structure diagram of another radiating piece of the invention；
Fig. 6 is the main view of the radiating piece of Fig. 5；
In figure: 1, weld seam, 2, radiating piece, 21, radiating part, 22, interconnecting piece.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Refering to fig. 1, present embodiment discloses a kind of methods of reduction automobile body welding deformation, comprising the following steps:
1) radiating piece 2 is fixed on fixture, and radiating piece 2 is pressed on welded workpiece surface, the equal edge of radiating piece 2 using fixture
1 direction of weld seam of welded workpiece is arranged, in favor of removing welding heat, phase between radiating piece 2 and the weld seam 1 of welded workpiece
Away from set distance；
2) welding operation is implemented to welded workpiece.
Wherein step 1) specifically includes the following steps:
S1) judge 1 type of weld seam of welded workpiece, if weld seam 1 is bar shaped weld seam, then follow the steps S2), if weld seam 1 is ring
Shape weld seam, thens follow the steps S3)；
S2 radiating piece 2) is fixed in fixture (not shown in figure 1), and radiating piece 2 is pressed on welded workpiece table using fixture
Face, radiating piece 2 are arranged along the length direction of bar shaped weld seam, at a distance of set distance between radiating piece 2 and bar shaped weld seam, in order to
Subsequent welding operation, while being more conducive to remove welded seam area heat, then execute step 2；
In a wherein embodiment, compressible on welded workpiece to have multiple radiating pieces 2, multiple radiating pieces 2 are welded along bar shaped
The length direction of seam is arranged, so that multiple radiating pieces 2 are successively pressed on welded workpiece surface along the length direction of bar shaped weld seam,
To be more conducive to weld heat dissipation.
Further, multiple radiating pieces 2 are evenly arranged along the length direction of bar shaped weld seam, to improve heat dissipation effect.
It is to be appreciated that depending on the radiating piece 2 quantity foundation fusion length of the length direction arrangement of bar shaped weld seam, example
Such as, the bar shaped weld seam shorter for length, can be used one group of radiating piece 2；Bar shaped weld seam longer for length, can arrange two groups
Or more radiating piece 2.
In a wherein embodiment, at a distance of 20~30mm between radiating piece 2 and bar shaped weld seam, to be more conducive to remove weldering
Seam and base material region heat reduce welding stress and residual deformation, guarantee welding workpiece dimensional accuracy, in addition, also avoiding butt welding
It connects operation and generates interference.
S3 radiating piece) is fixed on fixture, and radiating piece 2 is pressed on welded workpiece surface using fixture, along annular
Circumferentially multiple radiating pieces 2 of weld seam, at a distance of set distance between radiating piece 2 and circular weld, in order to subsequent welding behaviour
Make, while being more conducive to remove welded seam area heat, then executes step 2；
Wherein, multiple radiating pieces 2 on welded workpiece along circular weld circumferentially so that multiple radiating pieces 2 are along ring
Shape bead direction is successively pressed on welded workpiece surface, is more conducive to remove the heat at circular weld, improves heat dissipation effect.Example
As, using the form of docking, weld seam is circular weld between profile and profile, therefore can be evenly distributed on four faces of profile
Radiating piece 2 is set, so that multiple radiating pieces 2 form matrix group and carry out three-dimensional heat dissipation, reduces the production of welding stress from multiple directions
It is raw, with the heat dissipation effect being optimal, welding deformation can be reduced to the full extent.
Further, multiple radiating pieces 2 are in be evenly arranged along the circumferential direction of circular weld, to improve the heat dissipation uniformity and heat dissipation
Intensity.
In a wherein embodiment, at a distance of 20~30mm between radiating piece 2 and circular weld, to be more conducive to remove weldering
Seam and base material region heat reduce welding stress and residual deformation, guarantee welding workpiece dimensional accuracy, in addition, also avoiding to rear
Continuous welding operation generates interference.
In the above process, radiating piece 2 is made of copper product, on the one hand can effectively increase radiating efficiency, on the other hand
The bonding that can prevent radiating piece Yu solder, welding slag again, extends the service life of radiating piece and fixture；
Preferably, radiating piece 2 uses chromium-zirconium-copper (CuCrZr), and hardness is HRB78~HRB83, thermal coefficient 187, heat dissipation
Effect is more preferable.
In a wherein embodiment, the length of radiating piece 2 is not less than the three of its welded workpiece width compressed
/ bis-, to improve the heat dissipation effect of radiating piece.
In a wherein embodiment, as shown in Fig. 2, radiating piece 2 includes radiating part 21 and interconnecting piece 22, interconnecting piece 22
It is detachably connected on fixture.
Further, it is provided with mounting hole and pin hole on interconnecting piece 22, interconnecting piece 22 is realized by screw and positioning pin
With the connection of fixture, which is easily installed and dismantles, stable connection.
In a wherein embodiment, 21 opposing connections 22 of radiating part are inclined to set, with 2 He of radiating piece of being more convenient for
The fixation of fixture, heat radiation range of being also more convenient for.
It is to be appreciated that 21 opposing connections 22 of radiating part can also be of a straight line type setting, as shown in Figure 3.
Wherein, the shape of radiating piece 2 can be determined according to workpiece and position while welding, for example, can also be adopted according to actual condition
With the radiating piece 2 of any shape in such as Fig. 4-Fig. 6.
The method of the reduction automobile body welding deformation of the present embodiment is conducive to welding by the design and reasonable Arrangement of radiating piece 2
It removes to heat, improves fixture and vehicle body radiating efficiency, so that the generation of welding stress and post welding distortion is effectively reduced, benefit
In guaranteeing body quality and body dimensions precision, the stability of entire vehicle body is enhanced；It is easy to operate, 2 flexible arrangement of radiating piece
It is convenient, it can save that a large amount of later periods are artificial, the orthopedic required man power and material of machine in different welding region flexible arrangements, subtract
Production cost is lacked.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of method for reducing automobile body welding deformation, characterized in that the following steps are included:
1) fix radiating piece on fixture, and radiating piece be pressed on welded workpiece surface using fixture, radiating piece along to
The bead direction of welding workpiece is arranged, at a distance of set distance between radiating piece and the weld seam of welded workpiece；
2) welding operation is implemented to welded workpiece.
2. reducing the method for automobile body welding deformation as described in claim 1, characterized in that the step 1) specifically includes following
Step:
S1) judge the welding type of welded workpiece, if the weld seam of welded workpiece is bar shaped weld seam, then follow the steps S2), if
The weld seam of welded workpiece is circular weld, thens follow the steps S3)；
S2 radiating piece) is fixed on fixture, and radiating piece is pressed on welded workpiece surface using fixture, and radiating piece is along item
The length direction of shape weld seam is arranged, at a distance of set distance between radiating piece and bar shaped weld seam；
S3 radiating piece) is fixed on fixture, and radiating piece is pressed on welded workpiece surface using fixture, along circular weld
Circumferentially multiple radiating pieces, at a distance of set distance between radiating piece and circular weld.
3. reducing the method for automobile body welding deformation as described in claim 1, characterized in that the radiating piece uses copper product system
At.
4. reducing the method for automobile body welding deformation as claimed in claim 3, characterized in that the radiating piece uses chromium-zirconium-copper.
5. reducing the method for automobile body welding deformation as claimed in claim 4, characterized in that the hardness of the chromium-zirconium-copper is
HRB78~HRB83, thermal coefficient 187.
6. as described in claim 1 reduce automobile body welding deformation method, characterized in that in the step 2 radiating piece and to
At a distance of 20~30mm between the weld seam of welding workpiece.
7. reducing the method for automobile body welding deformation as described in claim 1, characterized in that the length of the radiating piece is not less than
2/3rds of its welded workpiece width compressed.
8. as described in claim 1 reduce automobile body welding deformation method, characterized in that the radiating piece include radiating part and
Interconnecting piece, the interconnecting piece are detachably connected on the fixture.
9. reducing the method for automobile body welding deformation as claimed in claim 8, characterized in that the relatively described connection of the radiating part
Portion is inclined to set.
10. as claimed in claim 2 reduce automobile body welding deformation method, characterized in that the step S3) in multiple heat dissipations
Part is in be evenly arranged along the circumferential direction of circular weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949386.9A CN109175750A (en) | 2018-08-20 | 2018-08-20 | A method of reducing automobile body welding deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949386.9A CN109175750A (en) | 2018-08-20 | 2018-08-20 | A method of reducing automobile body welding deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109175750A true CN109175750A (en) | 2019-01-11 |
Family
ID=64919070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810949386.9A Pending CN109175750A (en) | 2018-08-20 | 2018-08-20 | A method of reducing automobile body welding deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109175750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787273A (en) * | 2021-10-08 | 2021-12-14 | 中国空气动力研究与发展中心低速空气动力研究所 | Welding correction system and method for aluminum alloy sheet |
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| JP3635207B2 (en) * | 1998-03-31 | 2005-04-06 | 新日本製鐵株式会社 | Continuous restraint device for continuously welded strips or sheets |
| CN2757996Y (en) * | 2004-12-14 | 2006-02-15 | 太原钢铁(集团)有限公司 | Splicing welding machine |
| CN101898273A (en) * | 2010-06-30 | 2010-12-01 | 沪东中华造船(集团)有限公司 | Method for carrying out simulated training of non-melt argon tungsten-arc welding on liquefied natural gas (LNG) carrier for welders |
| CN202607146U (en) * | 2012-04-27 | 2012-12-19 | 富奥汽车零部件股份有限公司 | Welding anti-deformation clamp |
| CN104148783A (en) * | 2014-07-31 | 2014-11-19 | 南京力源锻造有限公司 | Forged coupler yoke manufacturing method |
| CN107627057A (en) * | 2017-09-25 | 2018-01-26 | 安徽瑞祥工业有限公司 | A kind of aluminium automobile body welding positioning tool |
-
2018
- 2018-08-20 CN CN201810949386.9A patent/CN109175750A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075277A (en) * | 1993-02-25 | 1993-08-18 | 北京航空工艺研究所 | Dynamically control thin-plate element low stress does not have distortion welding and device thereof |
| JP3635207B2 (en) * | 1998-03-31 | 2005-04-06 | 新日本製鐵株式会社 | Continuous restraint device for continuously welded strips or sheets |
| CN2757996Y (en) * | 2004-12-14 | 2006-02-15 | 太原钢铁(集团)有限公司 | Splicing welding machine |
| CN101898273A (en) * | 2010-06-30 | 2010-12-01 | 沪东中华造船(集团)有限公司 | Method for carrying out simulated training of non-melt argon tungsten-arc welding on liquefied natural gas (LNG) carrier for welders |
| CN202607146U (en) * | 2012-04-27 | 2012-12-19 | 富奥汽车零部件股份有限公司 | Welding anti-deformation clamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787273A (en) * | 2021-10-08 | 2021-12-14 | 中国空气动力研究与发展中心低速空气动力研究所 | Welding correction system and method for aluminum alloy sheet |
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Application publication date: 20190111 |
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