Cold punching compound mould

Abstract

The invention discloses a cold punching compound mould which comprises an upper mould and a lower mould, wherein a guide sleeve of the upper mould is sleeved on a guide pillar of the lower mould; a bottom hole convex mould is arranged at the center of the upper mould; an upper convex-concave mould is sleeved on the bottom hole convex mould; a cutting convex mould is embedded in the upper convex-concave mould; the cutting convex mould is sleeved on the bottom hole convex mould; a lower convex-concave mould and a lower concave mould corresponding to the bottom hole convex mould and the cutting convex mould are arranged on the lower mould; and a flange hole convex mould is also arranged on the lower mould. In such a mode, the five processes of cutting tongue, bending, punching bottom hole, punching flange hole and cutting are once compounded, so that only one set of mould is needed, the processes of cutting tongue, bending and punching bottom hole are finished before the processes of punching flange hole and cutting; the processes of punching flange hole and cutting are finished at the same time; the compound of a plurality of processes is smoothly realized; and the demands on high precision, low cost and high benefit of the modern production are met.

Description

technical field [0001] The invention relates to the field of mold manufacturing, in particular to a cold stamping composite mold. Background technique [0002] At present, the basic stamping process for forming a bent part with holes in the bottom and flange is: blanking, bending, punching the bottom hole, and punching the flange hole. Specifically, there are the following four forming process schemes: [0003] (1) Blanking, bending, punching the bottom hole, and punching the flange hole are formed in a single process; [0004] (2) Blanking and punching the bottom hole are compounded first, and then bending and punching the flange hole are formed in a single process; [0005] (3) Blanking and bending are combined first, and then the bottom hole and the flange hole are punched and formed; [0006] (4) Blanking, punching the bottom hole, and punching the flange hole are combined first, and then bent into shape. [0007] Through analysis, scheme (1) has a simple mold structu...

AI Technical Summary

Problems solved by technology

[0007] Through analysis, scheme (1) has a simple mold structure, but requires 4 sets of molds, which is very inefficient and cannot produce high-precision stamping parts; schemes (2), (3), and (4) have slightly more complicated structures and require 2 The efficiency and accuracy of molds above the pair are greatly improved

But these four schemes are far from meeting the requirements of modern production with high precision, low cost and high benefit.

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