Vehicle body top cover mounting and positioning control method and device, controller and storage medium

Abstract

The invention discloses a vehicle body top cover mounting and positioning control method and device, a controller and a medium. The method comprises the steps that a vehicle body is moved to a specified position, and the degree of freedom of the vehicle body in a space coordinate system is limited; a top cover is moved to a theoretical mounting position, and the degree of freedom of the top cover in the space coordinate system is limited; a vehicle body deviation value between the specified position and a target position of the vehicle body is acquired; the actual mounting position of the top cover is calculated according to the theoretical mounting position and the vehicle body deviation value; and the top cover is moved to the actual installation position, and the top cover is vertically and downwards placed on a vehicle body. The car body top cover mounting and positioning control method has the advantages of being high in flexibility, automatic and capable of saving process area while it is ensured that a car body top cover splicing process can meet the large-size design trend of the top cover.

Description

technical field [0001] The invention relates to the technical field of vehicle body installation, in particular to a vehicle body top cover installation and positioning control method, a vehicle body top cover installation and positioning control device, a controller and a storage medium. Background technique [0002] With the development of automobile body-in-white assembly manufacturing technology, many variants of traditional fixture-assisted positioning welding have emerged, and the automation rate has gradually increased. However, the combination process of the top cover assembly has always been a difficult point. The more obvious limitations are: 1. Due to the aesthetic needs of the market, contemporary models show that the car body and roof sunroof glass are developing in large sizes, and the design space reserved for the typical features (holes, flanges) of the fixture to realize the positioning function is becoming more and more. The narrowness makes it more diffic...

AI Technical Summary

Problems solved by technology

However, the combination process of the top cover assembly has always been a difficult point

The more obvious limitations are: 1. Due to the aesthetic needs of the market, contemporary models show that the car body and roof sunroof glass are developing in large sizes, and the design space reserved for the typical features (holes, flanges) of the fixture to realize the positioning function is becoming more and more. The narrowness makes it more difficult to achieve mechanical positioning through fixtures; 2. The current mainstream body-in-white roof assembly process can generally be divided into "positioning of the roof on the fixture", "positioning of the fixture on the parking station", " The three main connecting processes of "integration and welding" occupy a relatively large process area, which violates the low-carbon concept, and the technical transformation of some old wire bodies is limited by the original process area, so it is difficult to upgrade the technology; 3. Traditional top cover assembly The car model of the jig is highly customized, and the design of the jig is highly consistent with the shape of the top cover. It is impossible to realize the sharing of multiple models. Under the flexible working conditions of multi-car production, it is necessary to prepare multiple sets of fixtures for different models, which is costly and takes up space. Large, large fixture switching time consumption

4. The traditional roof splicing process adopts fixture-assisted positioning. Due to the relatively fixed state of the fixture, the installation position of the roof tends to be consistent. However, the size and state of the car body itself fluctuate, which will lead to unstable cooperation between the two, and it is difficult to meet the requirements. Construction requirements for matching demanding joining processes such as laser welding or laser brazing

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