Stamping molding process for outer plate tail part of head cover of automotive covering part and stamping mold

Abstract

The invention discloses a stamping molding process for an outer plate tail part of a head cover of an automotive covering part and a stamping mold. The process comprises the following steps: (11) in a previous procedure of tail part molding, reserving a product waste part of a tail region without trimming; (12) in a tail molding procedure, pressing a top region and a tail region of a blank; (13) carrying out side arranging and molding on a molding part; and (14) in a next procedure after tail molding, carrying out trimming operation by employing the edge of the final product of the tail part as a trimming line, and removing the waste part except the tail product of the head cover. Therefore, according to the stamping molding process for the outer plate tail part of the head cover of the automotive covering part, by virtue of a treatment scheme of simultaneously swaging at two ends, and secondary molding and work hardening in the middle, the molded plate part cannot easily rebound and deform; the accuracy easily reaches the standard; the debugging workload is reduced; meanwhile, the molded plate part becomes thin through secondary molding and extension; and the strength of the molded plate part is increased.

Description

technical field [0001] The invention relates to the technical field of plate stamping forming technology, in particular to a stamping forming process for the rear part of the top cover outer panel of an automobile cover. The present invention also relates to a stamping die used in the above stamping forming process. Background technique [0002] The shape of the automobile body is welded by many covering parts with large outline size and spatial surface shape, so there are high requirements for the dimensional accuracy and surface quality of the covering parts. Body panels require smooth surfaces, clear lines, and no surface defects such as wrinkles, scratches, and roughness. In addition, sufficient rigidity and dimensional stability are required. [0003] As one of the core outer covering parts, the outer panel of the automobile roof is respectively overlapped with the side wall and the outer panel of the tailgate. The precision and surface quality of the stamping parts di...

AI Technical Summary

Problems solved by technology

However, for the outer panel of the roof cover of the vehicle body, the overall size is large and the thickness of the panel is relatively thin, and the phenomenon of springback and wrinkling is prone to occur when the rear side is formed, which directly affects the accuracy of the body assembly after welding

In addition, due to the large overall size of the top cover, it is easy to have insufficient rigidity after forming, and it is easy to deform during the handling operation

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