Maintenance method for integrated die-casting part of vehicle body

Abstract

The invention relates to the technical field of vehicle body part maintenance, and discloses a vehicle body integrated die-casting part maintenance method. The method comprises the steps that firstly, the damage maintenance critical position of the vehicle body integrated die-casting part is recognized based on collision maintenance scrap big data analysis and collision CAE analysis, the vehicle body integrated die-casting part is divided into a maintenance reserved part and a maintenance cut-off part based on the damage maintenance critical position, and then maintenance spare parts are obtained through modular design based on the structural characteristics of the maintenance cut-off part; then, a maintenance cutting line is determined based on the damage maintenance critical position, the damaged maintenance cut-off part is separated from the maintenance reserved part based on the maintenance cutting line, finally, the relative position relation between the maintenance spare part and the maintenance reserved part is determined, and the maintenance spare part and the maintenance reserved part are welded into a whole. And the connection strength between the maintenance spare part and the maintenance retaining part is compensated. According to the maintenance method for the integrated die-casting part of the vehicle body, the modular maintenance concept is adopted, maintenance is convenient and fast, the maintenance cost is low, and the maintenance precision is high.

Description

technical field [0001] The invention relates to the technical field of vehicle body parts maintenance, in particular to a maintenance method for integral die-casting parts of a vehicle body. Background technique [0002] Under the dual pressure of automobile lightweight and energy saving and emission reduction, die-casting aluminum alloys replace traditional stamped and welded steel plates to make some parts of the body-in-white. It has become an important means of reducing the weight of the car body, especially the use of die-casting aluminum alloys for the rear floor and front and rear side beams has become an industry trend. . [0003] After the collision of the vehicle, the structural parts corresponding to the position of the body-in-white will be structurally damaged. The traditional stamped and welded steel plate body-in-white has a mature and diverse maintenance technology for the collision damaged area, thanks to the good shape, strength and weldability of the steel...

AI Technical Summary

Problems solved by technology

However, limited by the structural form and material properties of the integral casting, it is difficult to restore the shape of the structural parts corresponding to the body-in-white through mechanical external force after damage, and the overall cost of replacing spare parts is high, and it needs to be mechanically connected with the surrounding stamping parts again, while maintenance The factory basically does not have professional equipment and fixtures for mechanical connection, or the connection process is unreachable due to limited operating space

If partial cutting and repair welding is used for maintenance, complete die-casting spare parts are also required, the maintenance cost is high, and the dimensional accuracy and strength of the repair welding position are difficult to guarantee

Images