Flanging die

Abstract

The invention discloses a flanging die. The flanging die comprises an upper die base, a lower die base, a flanging male die mounted at the bottom of the upper die base and flanging female dies mounted on the lower die base. The inner side faces of the flanging female dies are molding surfaces. The top end of each molding surface is provided with a molding rod. The molding rods are transversely inlaid in the molding surfaces correspondingly and can rotate on the corresponding molding surfaces. The opposite sides of the two molding rods are provided with rolling surfaces protruding out of the respective molding surfaces. The rolling surfaces are matched with the flanging male die to conduct flanging on blanks. According to the scheme, the rolling surfaces are used for replacing flanging female dies and are matched with the flanging male die to conduct flanging on parts. Linear contact molding (common surface contact) is avoided by adopting the rolling surfaces in the flanging process, so that flanged surfaces are more smooth, and the flanging molding effect is good.

Description

technical field [0001] The invention relates to the field of stamping dies, in particular to a flanging die. Background technique [0002] At present, automobile stamping parts are mainly formed by cold stamping, and the forming process mainly includes drawing, trimming, punching, flanging and shaping, etc., and generally obtains the needs through drawing → trimming → flanging / blanking → forming or flanging Product features, so the flanging die is an important part of product stamping production. Ordinary stamping dies generally include upper die base, upper flanging die, pressing core, flanging punch, and lower die base. Among them, the upper flanging die is generally spliced ​​by knife blocks. Because there are seams in the flanging die inserts, the unevenness of the seams will easily cause roughening of the flanging process parts (affecting the appearance quality). At the same time, the flanging die The replacement cost of the insert is relatively high, and it is inconve...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a flanging mold, in order to solve the problems of existing seams in the flanging die inserts, uneven seams that easily cause roughening of the flanging process parts and high maintenance and replacement costs of the flanging die inserts. question

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