Automobile body rear end welding process

Abstract

The invention relates to the field of automobile production, in particular to an automobile body rear end welding process. The process comprises the following steps: welding an automobile body assembly: welding a lower automobile body assembly with a left side wall assembly and a right side wall assembly to form the automobile body assembly; performing pre-tightening: pre-tightening a top cover front cross beam, a top cover rear cross beam, a storage plate assembly, a rear apron board assembly and the automobile body assembly; and performing welding: welding the rear apron board assembly with the automobile body assembly. The process has the advantages that a welding tooling for the rear apron board assembly and a floor assembly in the prior art is omitted, additional clamping toolings are not needed, one welding procedure is omitted, the automobile body production time is shortened, the cost of the clamping toolings is reduced, and the problems that in the prior art, the left side wall assembly, the right side wall assembly and the rear apron board are not in place and the precision of the automobile body is influenced, are solved.

Description

technical field [0001] The invention relates to the field of automobile production, in particular to a welding process for the rear end of a vehicle body. Background technique [0002] The design of the rear-end structure of the car body needs to consider the safety performance of the car, and at the same time take into account the manufacturing process and assembly process. In the prior art, for example, the Chinese utility model patent with the publication number CN205524506U discloses a car body rear structure and an automobile, including a rear floor and a rear skirt assembly, and the rear edge of the rear floor is lapped on the rear skirt assembly. , the lower plane of the rear floor is provided with two rear sections of the rear floor stringer along the front-to-back direction, the rear ends of the rear section of the rear floor stringer are lapped on the rear apron assembly, the rear section of the rear floor stringer There is a first reinforcement at the end, the up...

AI Technical Summary

Problems solved by technology

Similar structural design will lead to two problems in the production process: one is the need for welding tooling for the rear skirt panel and the floor assembly; the other is that when the side panel assembly and the floor assembly are welded, the tail skirt When the apron assembly is covered with the tail skirt assembly, it is easy to have the interference of the rear end of the side panel and the problem of not being in place, which will affect the accuracy of the body

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