CN112570883A - Method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts - Google Patents
Method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts Download PDFInfo
- Publication number
- CN112570883A CN112570883A CN202011464814.2A CN202011464814A CN112570883A CN 112570883 A CN112570883 A CN 112570883A CN 202011464814 A CN202011464814 A CN 202011464814A CN 112570883 A CN112570883 A CN 112570883A
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- Prior art keywords
- aluminum alloy
- alloy part
- welding
- energy automobile
- hydrogen energy
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a method for ensuring welding precision of a hydrogen energy automobile aluminum alloy part, which comprises the steps of polishing an aluminum alloy part to be welded by a stainless steel polishing brush, cleaning and drying a welding area of the aluminum alloy part by utilizing ultrasonic waves, placing the aluminum alloy part on a supporting seat, placing an upper pressure head on the aluminum alloy part, fixing a left retaining piece and a right retaining piece on the left side and the right side of the aluminum alloy part, clamping the aluminum alloy part, welding the aluminum alloy part after the aluminum alloy part is fixed on a tool fixing clamp, and welding a connecting seam of the well-jointed aluminum alloy part by utilizing a laser and plasma arc composite welding mode. The technical scheme provided by the invention has the beneficial effects that: through being equipped with frock mounting fixture, need guarantee all around of precision to the aluminum alloy part and fix, make the part receive the effect of external force when welding deformation, can offset the deflection, wait that the part cools off the back and withdraw frock mounting fixture, can guarantee the size precision of aluminum alloy part when the welding.
Description
Technical Field
The invention relates to the technical field of manufacturing of hydrogen energy automobile parts, in particular to a method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts.
Background
At present, light weight is the development trend of the automobile industry, wherein the weight of an automobile body assembly is about 50% of the preparation quality, the light weight of the automobile body is a key element for solving the light weight of the automobile, aluminum alloy materials are used for replacing traditional automobile steel materials in the industry more mature, the weight of the automobile body is reduced by 40% in the same size, the MIG welding process is mainly applied to the aluminum frame section bar connection process, but deformation is easy to occur during welding, the manufacturing precision control is difficult, and the final delivery precision is difficult to guarantee.
Disclosure of Invention
In view of the above, to solve the above problems, embodiments of the present invention provide a method for ensuring welding accuracy of hydrogen energy automobile aluminum alloy parts.
The embodiment of the invention provides a method for ensuring the welding precision of a hydrogen energy automobile aluminum alloy part, which is characterized in that a tool fixing clamp is used for fixing the aluminum alloy part to be welded, wherein the tool fixing clamp comprises a supporting seat, an upper pressure head, a left supporting piece and a right supporting piece;
the aluminum alloy part to be welded is polished by a stainless steel polishing brush, a welding area of the aluminum alloy part is cleaned by ultrasonic waves, then drying treatment is carried out, the aluminum alloy part is placed on the supporting seat, the upper pressing head and the supporting seat are arranged oppositely and placed on the aluminum alloy part, the left abutting piece and the right abutting piece are fixed on the left side and the right side of the aluminum alloy part and clamp the aluminum alloy part, the aluminum alloy part is fixed on the tool fixing clamp and then welded, a connecting seam of the connected aluminum alloy part is welded by a laser and plasma arc composite welding mode, and the aluminum alloy part is taken down from the tool fixing clamp after being cooled.
Furthermore, the material of the supporting seat is copper.
Furthermore, the upper pressure head is made of copper.
Furthermore, the left stopper is made of copper.
Furthermore, the right stopper is made of copper.
Furthermore, a balancing weight is arranged at the bottom of the left resisting part.
Furthermore, a balancing weight is arranged at the bottom of the right resisting part.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: because aluminum alloy welding deformation is great, when the part precision appears undulantly after the welding, can accumulate whole car, lead to the not good control of precision of whole car, through being equipped with frock mounting fixture, need guarantee all around of precision to the aluminum alloy part and fix, make the part receive the effect of external force in welding deformation, can offset the deflection, wait that the part cools off the back and withdraw frock mounting fixture, can guarantee the size precision of aluminum alloy part when the welding.
Drawings
FIG. 1 is a front view of one embodiment of a fixture attachment fixture provided in the present disclosure;
FIG. 2 is a left side view of the fixture of FIG. 1 (with the counterweight hidden);
in the figure: supporting seat 1, go up pressure head 2, left piece 3, right piece 4, balancing weight 5, aluminum alloy part 6 of keeping out.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for ensuring welding accuracy of a hydrogen energy automobile aluminum alloy part, in which a fixture is used to fix an aluminum alloy part 6 to be welded, and the fixture includes a support base 1, an upper press head 2, a left stopper 3, and a right stopper 4.
The method comprises the steps of polishing an aluminum alloy part to be welded by a stainless steel polishing brush, cleaning a welding area of the aluminum alloy part by ultrasonic waves, then performing drying treatment, and cleaning by using ethylene glycol and/or isopropanol during cleaning so as to fully remove oil stains, impurities, oxidation films and the like around a position to be welded and ensure the welding quality. The aluminum alloy part 6 is placed on the supporting seat 1, the upper pressure head 2 is arranged opposite to the supporting seat 1 and is placed on the aluminum alloy part 6, the left abutting part 3 and the right abutting part 4 are fixed on the left side and the right side of the aluminum alloy part 6 and clamp the aluminum alloy part 6, the aluminum alloy part 6 is fixed on the tool fixing clamp, the aluminum alloy part 6 is welded, the connecting seam of the connected aluminum alloy parts is welded in a laser and plasma arc composite welding mode, the fusion depth can be greatly improved during welding, and the aluminum alloy part 6 is taken down from the tool fixing clamp after the aluminum alloy part 6 is cooled.
Because aluminum alloy welding deformation is great, when the part precision appears undulantly after the welding, can accumulate whole car, lead to the not good control of precision of whole car, through being equipped with frock mounting fixture, fix around needing to guarantee the precision to aluminum alloy part 6, make the part receive the effect of external force in welding deformation, can offset the deflection, wait that the part cools off the back and withdraw frock mounting fixture, can guarantee the size precision of aluminum alloy part 6 when the welding.
Further, the material of supporting seat 1, last pressure head 2, left piece 3, right piece 4 of keeping out is copper, and the heat conduction rate of copper is comparatively fast, adopts the copper product matter, can reduce the temperature when 6 welding of aluminum alloy part fast, reduces the deformation degree of part.
The bottom of the left retaining piece 3 and the bottom of the right retaining piece 4 are provided with the balancing weights 5, so that the left retaining piece 3 and the right retaining piece 4 can be prevented from easily moving in the welding process, the distance between the left retaining piece 3 and the right retaining piece 4 can be ensured, and the accuracy of the welded parts can be ensured. And meanwhile, the left retaining piece 3 and the right retaining piece 4 can be moved according to the sizes of different aluminum alloy parts 6 so as to be suitable for the aluminum alloy parts 6 with different sizes.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A method for guaranteeing welding precision of hydrogen energy automobile aluminum alloy parts is characterized in that a tool fixing clamp is used for fixing the aluminum alloy parts to be welded, and the tool fixing clamp comprises a supporting seat, an upper pressure head, a left abutting piece and a right abutting piece;
the aluminum alloy part to be welded is polished by a stainless steel polishing brush, a welding area of the aluminum alloy part is cleaned by ultrasonic waves, then drying treatment is carried out, the aluminum alloy part is placed on the supporting seat, the upper pressing head and the supporting seat are arranged oppositely and placed on the aluminum alloy part, the left abutting piece and the right abutting piece are fixed on the left side and the right side of the aluminum alloy part and clamp the aluminum alloy part, the aluminum alloy part is fixed on the tool fixing clamp and then welded, a connecting seam of the connected aluminum alloy part is welded by a laser and plasma arc composite welding mode, and the aluminum alloy part is taken down from the tool fixing clamp after being cooled.
2. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein the material of the supporting seat is copper.
3. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein the upper pressure head is made of copper.
4. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein the left stopper is made of copper.
5. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein the right stop member is made of copper.
6. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein a weight block is arranged at the bottom of the left resisting part.
7. The method for ensuring the welding accuracy of the hydrogen energy automobile aluminum alloy part as recited in claim 1, wherein a weight is provided at the bottom of the right resisting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464814.2A CN112570883A (en) | 2020-12-14 | 2020-12-14 | Method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464814.2A CN112570883A (en) | 2020-12-14 | 2020-12-14 | Method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112570883A true CN112570883A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464814.2A Pending CN112570883A (en) | 2020-12-14 | 2020-12-14 | Method for ensuring welding precision of hydrogen energy automobile aluminum alloy parts |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447660A (en) * | 2013-08-15 | 2013-12-18 | 龙口丛林中德车体系统工程有限公司 | Method for preventing deformation of multiple aluminum alloy sections welded in combined way |
| CN107671460A (en) * | 2017-10-26 | 2018-02-09 | 无锡汉神电气股份有限公司 | A kind of aluminium alloy heat radiator robot welding workstation |
| CN109317892A (en) * | 2018-11-15 | 2019-02-12 | 中国科学院合肥物质科学研究院 | Tooling is welded and fixed for aluminum alloy battery pallet multi-panel in one kind |
| CN109434272A (en) * | 2018-11-01 | 2019-03-08 | 西北工业大学 | Aluminium alloy thin-walled box body packaging fixture and the method that aluminium alloy thin-walled box body is welded using the fixture |
| CN208744032U (en) * | 2018-09-19 | 2019-04-16 | 安徽忠旺铝合金精深加工有限公司 | A kind of welding tooling of aluminium alloy automobile front deck bracket |
| CN111940978A (en) * | 2020-08-17 | 2020-11-17 | 沈阳飞机工业（集团）有限公司 | Tool and method for inhibiting welding deformation of thin-wall curved surface aluminum alloy part |
-
2020
- 2020-12-14 CN CN202011464814.2A patent/CN112570883A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447660A (en) * | 2013-08-15 | 2013-12-18 | 龙口丛林中德车体系统工程有限公司 | Method for preventing deformation of multiple aluminum alloy sections welded in combined way |
| CN107671460A (en) * | 2017-10-26 | 2018-02-09 | 无锡汉神电气股份有限公司 | A kind of aluminium alloy heat radiator robot welding workstation |
| CN208744032U (en) * | 2018-09-19 | 2019-04-16 | 安徽忠旺铝合金精深加工有限公司 | A kind of welding tooling of aluminium alloy automobile front deck bracket |
| CN109434272A (en) * | 2018-11-01 | 2019-03-08 | 西北工业大学 | Aluminium alloy thin-walled box body packaging fixture and the method that aluminium alloy thin-walled box body is welded using the fixture |
| CN109317892A (en) * | 2018-11-15 | 2019-02-12 | 中国科学院合肥物质科学研究院 | Tooling is welded and fixed for aluminum alloy battery pallet multi-panel in one kind |
| CN111940978A (en) * | 2020-08-17 | 2020-11-17 | 沈阳飞机工业（集团）有限公司 | Tool and method for inhibiting welding deformation of thin-wall curved surface aluminum alloy part |
Non-Patent Citations (1)
| Title |
|---|
| 刘顺洪: "《激光制造技术》", 30 June 2011, 华中科技大学出版社 * |
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Application publication date: 20210330 |
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