Stamping method for multi-station high-efficiency and high-precision automotive panels

Abstract

The invention relates to a stamping method of a multi-station efficient high-precision automobile covering part, and belongs to the field of stamping. The stamping method includes the steps: feeding a plate into a draw die with a draw bead for drawing; transferring a drawn part onto a trimming and punching die for trimming and punching, removing five waste materials on the periphery of the part and simultaneously punching two positioning process holes; transferring the part onto a trimming die for trimming, and removing three waste materials remaining on an inclined surface in a previous working procedure; continuing transferring the part onto a secondary trimming and punching die, removing redundant waste materials at a split position and simultaneously punching four front holes; next, conveying the part onto a flanging and sizing die for flanging and sizing to determine the shape of the covering part; finally, transferring the part onto a side-punching and splitting die for side-punching and splitting. Based on consideration of the problems of part drawing breakage, rebound and positioning difficulty, the plate is drawn twice and trimmed for three times, and both the production efficiency and precision of the covering part are improved.

Description

Technical field [0001] The invention relates to a stamping method for multi-station high-efficiency and high-precision automobile covering parts, in particular, each process method is related to sheet metal forming, so the invention belongs to the field of stamping forming. Background technique [0002] In the process of automobile replacement, automobile panel forming is an important part of the entire automobile industry, and it is also the part with the most intensive technology and the most difficult to process. Since the shape of the automobile covering parts is very complicated, the commonly used production methods will cause the parts to spring back and crack. At the same time, low efficiency is a common problem of the existing covering parts. Therefore, urgent requirements are put forward for the high-efficiency and high-precision production method of automobile panels. [0003] Stamping is the main process for the production of automotive panels, so the rational design an...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the disadvantages of low production efficiency, low precision, springback, and cracking of commonly used automobile panels, and provides a multi-station high-efficiency and high-precision stamping method for automobile panels, which is suitable for mass production of parts. The reasonable arrangement of the process ensures the quality and precision of the cover; the invention adopts the form of one out of two, and puts six processes on three molds at the same time, which greatly improves the production efficiency of the cover

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