CN109514083A - A kind of automobile body-in-white laser fast welding method - Google Patents
A kind of automobile body-in-white laser fast welding method Download PDFInfo
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- CN109514083A CN109514083A CN201811324105.7A CN201811324105A CN109514083A CN 109514083 A CN109514083 A CN 109514083A CN 201811324105 A CN201811324105 A CN 201811324105A CN 109514083 A CN109514083 A CN 109514083A
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- laser
- scanning
- welding
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- pinning
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Classifications
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to a kind of automobile body-in-white laser fast welding method, 1, the white body stamping parts that need to be connected is utilized to tooling or other Joining Technology pre-assembleds, the control of join domain gap is within the scope of 0mm-1.5mm；2, adjustment laser parameter is to setting value, and then laser scanning head is moved to to-be-welded region by manipulator, and laser beam realizes that pre- pinning is once welded in the quick scanning of diameter < 2mm, completion under laser scanning head control；3, aforesaid operations are repeated and complete all pre- pinnings of solder joint, each stamping parts overlap joint gap locking of completion localized weld areas in scanning area when laser scanning head does not move；4, optical gate is opened, laser beam realizes that desired trajectory, diameter are more than or equal to 4mm under laser scanning head control, and secondary welding is completed in scanning at first pinning point.The present invention realizes the unlimited encryption of white body solder joint, and single-point bonding strength is higher than resistance spot welding.
Description
Technical field
The invention belongs to auto industry vehicle body interconnection technique fields, and in particular to a kind of automobile body-in-white laser rapid welding
Method.
Background technique
White body laser scanning spot welding remotely exposes to automobile body welding position using laser beam is focused, and is quickly moved by light beam
It is dynamic to realize fast moving between the welding of vehicle body novel spot welding and solder joint.As long as laser welding production line changes welding parameter
The components of different vehicle bodies are welded, the transformation for reducing a large amount of hardware improves production efficiency and welding quality, becomes me
Cross playing an important role for automotive small and light-weighted development.
In order to pursue the raising of rigidity of the vehicle, the distribution and encryption of automobile solder joint are always the project of automobile industry research.
The encryption which kind of technique to realize white body solder joint using, becomes urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of automobile body-in-white laser fast welding method, the prior art that compares is bigger
Production efficiency is improved in degree, realizes the unlimited encryption of white body solder joint, and single-point bonding strength is higher than resistance spot welding.
The purpose of the present invention is achieved through the following technical solutions:
A kind of automobile body-in-white laser fast welding method, its step are as follows:
1) the white body stamping parts that need to be connected is utilized into tooling or other Joining Technology pre-assembleds, the control of join domain gap
It makes within the scope of 0mm-1.5mm；
2) laser is opened, adjusting parameter to setting value, then laser scanning head is moved to to-be-welded region by manipulator,
Optical gate is opened, laser beam is realized that pre- pinning is once welded in the quick scanning of diameter < 2mm, completion under laser scanning head control, closed
Black out lock；
3) all pre- pinnings of solder joint in scanning area, complete part when repetition aforesaid operations completion laser scanning head does not move
Welding region each stamping parts overlap joint gap locking；
4) optical gate is opened, laser beam realizes that desired trajectory, diameter are more than or equal to 4mm, scanning under laser scanning head control
Optical gate is closed after completing secondary welding at first pinning point；
5) it repeats the above process, completes the rapid welding of the subsequent solder joint of pinning.
As more preferably technical solution of the invention: the scanning track in the step 4) is helix, jaggies, triangle
Shape or the line of falling 8-shaped.
As more preferably technical solution of the invention: the scanning track in the step 4) is helix and jaggies.
As more preferably technical solution of the invention: the laser output power is 1-10kW, scanning speed 20--
280mm/s, defocusing amount -8mm-+8mm.
It has the beneficial effect that:
The present invention realizes connection, the present invention to the steel or aluminium plate for controlling gap using laser generator and light microscopic cooperation
Solves the unlimited cryptography issue of white body spot welding, and single-point bonding strength is not less than resistance spot welding.The accumulative connection thickness of plate
0.7mm-5mm.The distance between two stamping parts of laser welding in the prior art require within 0.2mm, of the invention
Method, which realizes, also can achieve identical welding quality within 1.5mm, reduce the requirement of butt-welding fitting clamping accuracy, ensure that
Product quality,
Detailed description of the invention
Fig. 1 is a kind of scanning track schematic diagram of automobile body-in-white laser fast welding method of the invention；
Fig. 2 is a kind of welder schematic diagram of automobile body-in-white laser fast welding method of the invention；Wherein 1, machine
Tool hand；2, plate；3, laser beam；4, probe；5, laser generator；6, Manipulator Controller.
Specific embodiment
Below with reference to example, the present invention will be further described:
Embodiment 1:
1.2mm and 1.5mm two-layered steel plates to be fixed using simple tooling, gap controls within 1.5mm, and positioning is completed,
Single pass power is set as 5000W, speed of welding 105mm/s opens optical gate and welded, and completes continuous in scanning area
4 points of pre- pinnings；Rescan power is set as 4000W, speed of welding 75mm/s, defocusing amount 0mm scan track such as Fig. 1
In B shown in, open optical gate, at first pinning point complete secondary welding, close optical gate, repeat the above process, complete
The rapid welding of subsequent 3 pinning solder joints, finally obtains welding defect, and diameter is the solder joint of 6mm.
Embodiment 2:
0.8mm, 1.2mm and 1.5mm three-ply plate are fixed using simple tooling, gap controls within 1.5mm, positioning
It completes, sets a laser power as 6000W, speed of welding 95mm/s opens optical gate and welded, completed in scanning area
Continuous 5 points of pre- pinnings；Rescan power is set as 5000W, speed of welding 65mm/s, defocusing amount is -2mm, scans track
Shown in A as shown in figure 1, optical gate is opened, secondary welding is completed at first pinning point, optical gate is closed, repeats the above process,
The rapid welding for completing subsequent 4 pinning solder joints, finally obtains welding defect, and diameter is the solder joint of 5mm.
Embodiment 3:
Using simple tooling by tetra- layers of Interal fixation of 0.8mm, 1.2mm, 1.2mm and 1.5mm, gap control 1.5mm with
Interior, positioning is completed, and sets a laser power as 7000W, speed of welding 100mm/s opens optical gate and welded, completes to sweep
Continuous 6 points of pre- pinnings in region to be retouched, set rescan power as 6000W, speed of welding 65mm/s, defocusing amount is+2mm,
It scans shown in the D of track as shown in figure 1, opens optical gate, secondary welding is completed at first pinning point, close optical gate, repeat
The above process completes the rapid welding of subsequent 5 pinning solder joints, finally obtains welding defect, and diameter is the solder joint of 5mm.
Embodiment 4:
Two layers of aluminium sheet of 1.2mm and 1.5mm to be fixed using simple tooling, gap controls within 1.5mm, and positioning is completed,
A laser power is set as 6000W, speed of welding 130mm/s opens optical gate and welded, and completes continuous in scanning area
7 points of pre- pinnings set rescan power as 5000W, and speed of welding 120mm/s, defocusing amount 0mm scan track such as Fig. 1
In C shown in, open optical gate, at first pinning point complete secondary welding, close optical gate, repeat the above process, complete
The rapid welding of subsequent 6 pinning solder joints, finally obtains welding defect, and diameter is the solder joint of 5mm.
Embodiment 5:
Tri- layers of aluminium sheet of 1.2mm, 1.2mm and 1.5mm are fixed using simple tooling, gap controls within 1.5mm, positioning
It completes, sets a laser power as 6000W, speed of welding 130mm/s opens optical gate and welded, completes scanning area
Interior continuous 4 points of pre- pinnings set rescan power as 5000W, and speed of welding 100mm/s, defocusing amount is+2mm, scanning side
To shown in B as shown in figure 1, optical gate is opened, secondary welding is completed at first pinning point, closes optical gate, repeats above-mentioned mistake
Journey completes the rapid welding of subsequent 3 pinning solder joints, finally obtains welding defect, and diameter is the solder joint of 5mm.
Embodiment 6
Tetra- layers of aluminium sheet of 1.2mm, 1.2mm, 1.2mm and 1.2mm are fixed using simple tooling, gap control 1.5mm with
Interior, positioning is completed, and sets a laser power as 8000W, speed of welding 150mm/s opens optical gate and welded, completes to sweep
Continuous 5 points of pre- pinnings in region to be retouched, set rescan power as 7000W, speed of welding 130mm/s, defocusing amount is+1mm,
The D institute 4 of track as shown in figure 1 is scanned, secondary welding is completed at first pinning point, optical gate is closed, repeats the above process, it is complete
At the rapid welding of subsequent 4 pinning solder joints, optical gate is opened, finally obtains welding defect, diameter is the solder joint of 5mm.
Table 1
Shear tension mechanical property test is carried out to embodiment 1-6, the single-point bonding strength of the application is higher than resistance spot welding.
Test result such as table 1.
Claims (4)
1. a kind of automobile body-in-white laser fast welding method, which is characterized in that steps are as follows:
1) the white body stamping parts that need to be connected is utilized into tooling or other Joining Technology pre-assembleds, the control of join domain gap is arrived
Within the scope of 0mm-1.5mm；
2) laser is opened, adjusting parameter to setting value, then laser scanning head is moved to to-be-welded region by manipulator, is opened
Optical gate, laser beam realize that pre- pinning is once welded in the quick scanning of diameter < 2mm, completion under laser scanning head control, close light
Lock；
3) aforesaid operations are repeated and complete all pre- pinnings of solder joint, completion local welding in scanning area when laser scanning head does not move
Region each stamping parts overlap joint gap locking；
4) optical gate is opened, laser beam realizes desired trajectory under laser scanning head control, and diameter is more than or equal to 4mm, and scanning is the
One complete secondary welding at pinning point after close optical gate；
5) it repeats the above process, completes the rapid welding of the subsequent solder joint of pinning.
2. a kind of automobile body-in-white laser fast welding method as described in claim 1, it is characterised in that: the step 4)
In scanning track be helix, jaggies, triangle or the line of falling 8-shaped.
3. a kind of automobile body-in-white laser fast welding method as described in claim 1, it is characterised in that: the step 4)
In scanning track be helix and jaggies.
4. a kind of automobile body-in-white laser fast welding method as described in claim 1, it is characterised in that: the laser is defeated
Power is 1-10kW, scanning speed 20--280mm/s, defocusing amount -8mm-+8mm out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324105.7A CN109514083A (en) | 2018-11-08 | 2018-11-08 | A kind of automobile body-in-white laser fast welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324105.7A CN109514083A (en) | 2018-11-08 | 2018-11-08 | A kind of automobile body-in-white laser fast welding method |
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| Publication Number | Publication Date |
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| CN109514083A true CN109514083A (en) | 2019-03-26 |
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| CN201811324105.7A Pending CN109514083A (en) | 2018-11-08 | 2018-11-08 | A kind of automobile body-in-white laser fast welding method |
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| CN104507628A (en) * | 2012-08-08 | 2015-04-08 | 新日铁住金株式会社 | Method for welding overlapped part, method for manufacturing lap weld member, lap weld member, and component for automobile |
| KR20160080671A (en) * | 2014-12-30 | 2016-07-08 | 주식회사 성우하이텍 | Welding method for galvanized steel sheets |
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| CN106077953A (en) * | 2016-08-03 | 2016-11-09 | 武汉华工激光工程有限责任公司 | A kind of method and system that sheet metal is carried out nanosecond laser welding |
| CN106735894A (en) * | 2016-12-13 | 2017-05-31 | 大族激光科技产业集团股份有限公司 | A kind of dissimilar metal micro-bonding method |
| CN108290247A (en) * | 2015-09-16 | 2018-07-17 | 新日铁住金株式会社 | The lap welding method and joint welding connector of steel plate |
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2018
- 2018-11-08 CN CN201811324105.7A patent/CN109514083A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554469A (en) * | 2010-10-25 | 2012-07-11 | 铃木株式会社 | Laser lap welding method for parts made of galvanized steel sheet |
| CN104507628A (en) * | 2012-08-08 | 2015-04-08 | 新日铁住金株式会社 | Method for welding overlapped part, method for manufacturing lap weld member, lap weld member, and component for automobile |
| CN104339085A (en) * | 2013-07-24 | 2015-02-11 | 珠海光宝移动通信科技有限公司 | Laser welding method and laser welding product |
| KR20160080671A (en) * | 2014-12-30 | 2016-07-08 | 주식회사 성우하이텍 | Welding method for galvanized steel sheets |
| CN105880829A (en) * | 2015-02-18 | 2016-08-24 | 丰田自动车株式会社 | Laser welding method |
| CN106041307A (en) * | 2015-04-03 | 2016-10-26 | 丰田自动车株式会社 | Welding method |
| CN106041306A (en) * | 2015-04-03 | 2016-10-26 | 丰田自动车株式会社 | Welding method |
| CN108290247A (en) * | 2015-09-16 | 2018-07-17 | 新日铁住金株式会社 | The lap welding method and joint welding connector of steel plate |
| CN106077953A (en) * | 2016-08-03 | 2016-11-09 | 武汉华工激光工程有限责任公司 | A kind of method and system that sheet metal is carried out nanosecond laser welding |
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