Laser brazing clearance compensation method

A technology of brazing gap and compensation method, which is applied in the direction of laser welding equipment, welding equipment, welding equipment, etc., can solve the problems of low pass rate, increase of vehicle production cost, and long adjustment time, so as to improve assembly accuracy and facilitate Promote, adjust simple effects
CN101862874AInactive Publication Date: 2010-10-20FAW GROUP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
FAW GROUP
Publication Date
2010-10-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a laser brazing clearance compensation method. The method is characterized in that: subsection welding program is added into a robot program, twenty three section welding program corresponding is carried out on a welding line with the length of 1.6m, welding parameter is respectively set according to welding condition of each section of the welding line, each section of the welding line is smoothly connected by utilizing the track approaching program of robot, so that the entire three-dimensional arc welding line is smooth in appearance; and a laser welding head origin point search program, a position closed loop control program and a welding line initial point identification program are added into the robot program. The invention requires no modification on mechanical structure, improves assembly accuracy and has low cost; regulating is rapid, thus being applicable to rapid quality control and mass production; and the method is easy to popularize, and adjustment is simple.
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Description

Technical field:

[0001] The invention relates to a laser brazing gap compensation method, which belongs to the technical field of laser brazing. Background technique:

[0002] In order to improve the strength of the car body and reduce the production cost, laser brazing technology is used in the car body manufacturing process. Due to the high quality requirements of laser brazing technology and working conditions on the surface of the car body, the quality of laser brazing is unstable, and the pass rate is only 73%. At the initial stage of production, 10 car bodies in white were scrapped / month, and 8 people were required to modify the surface to improve production. cost. In particular, the assembly gap of the welded parts is required to reach a uniform gap of 0 to 0.2 mm to ensure the strength and appearance of the weld. However, the single-piece machining accuracy error of the stamping process is -0.5 mm to +0.5 mm, which is difficult to achieve after the parts are assembl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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