Automatic welding method for vehicle body assembly

Abstract

The invention discloses a vehicle body assembly automatic welding method which is applied to a vehicle body assembly automatic welding system, and the vehicle body assembly automatic welding system comprises a preassembling station, a positioning welding station and a repair welding station which are sequentially arranged from front to back. The method comprises the following steps that all the body-in-white preassembling piece assemblies are preassembled at the preassembling station, and the preassembled body-in-white is conveyed to the positioning welding station; all the preassembled parts are positioned, clamped and welded at the positioning and welding station and are conveyed to the repair welding station; and automatic welding of the repair welding spots is completed at the repair welding station, and offline is carried out. Compared with the prior art, the occupied space and cost of automatic welding of the vehicle body assembly are reduced, and the welding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle body welding technology, in particular to an automatic welding method for vehicle body assembly. Background technique [0002] At present, most of the technical solutions for automatic welding of automobile body-in-white assembly at home and abroad require more than 6 stations for positioning and welding of parts, and the welding process is similar. Pre-assembly is generally divided into two stations: pre-installation of the lower body assembly, side panel assembly, front and rear beams of the top cover, lower mounting plate of the front bulkhead, and rear end plate; positioning welding of pre-assembly parts generally has two stations Welding is carried out above; at least two more stations are required for positioning welding of the roof beam, roof, and front wheel house outer panels; after the positioning welding is completed, repair welding stations need to be arranged to complete the body asse...

AI Technical Summary

Problems solved by technology

[0004] 1. Occupying a large area of ​​the site, it is necessary to arrange multiple stations to assemble parts and weld step by step;

[0005] 2. Due to the influence of tooling or welding tongs, the pre-assembled parts cannot be welded at one station;

[0006] 3. There is a sequence of assembly and welding of the front and rear beams of the top cover, the top cover, part of the A-pillar of the side wall and the outer panel of the front wheel house, and the positioning welding needs to be divided into positions to complete;

[0007] 4. The equipment investment cost is high, and more than 24 robots and more than 36 welding tongs are needed to complete the final welding

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