Stretching technology for automobile covering member and stretching die

Abstract

The invention relates to the technical field of vehicle engineering and in particular relates to a stretching technology for an automobile covering member and a stretching die. The stretching technology is applied for plate stretch; combination stretch in two different stretching directions is applied to the plate; the combination stretch comprises stretch in a forward stretching direction and stretch in a side stretching direction; the stretch in the forward stretching direction is perpendicular to a contour ridge line of the plate; and the stretch in the side stretching direction is appliedby the side surface of the plate. The beneficial effects are that with stretching force applied to the side of the plate, the stretching direction of the plate can be adjusted; in the same procedure,the plate is stretched and formed in two directions, so stretching angle is increased; and plate crack during the stretch can be avoided, so product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a stretching process and a stretching die for an automobile cover. Background technique [0002] With the rapid development of the automobile industry and the diversification of needs, the appearance of automobiles is becoming more and more streamlined, and the design is also very rich. At present, most of the automobile outer panels are still steel sheet drawing stamping process. When pursuing the fashion appearance, the traditional steel sheet drawing stamping process and drawing die cannot meet the demand. [0003] The manufacture of automobile outer panels generally requires 3 to 5 processes, and the first process is to stretch and form the sheet. If the first process is reversed, defects will occur, and the remaining processes cannot be processed, and the workpiece is scrapped and wasted. Material. It is very difficult to process the outer panels of automobiles...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a stretching process and a stretching die for automobile panels, which are used to solve the problems of the inner and outer panels of the automobile trunk and the outer panels of the automobile back door in the prior art. Easy to break during stretch forming, poor product quality and other problems

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