Processing Technology of Thick Plate Narrow Groove Reinforced Punch with Guide

Abstract

The invention discloses a machining process for a reinforced punch with guide thick plates and narrow grooves. The punch is composed of a first part and a second part. The first part comprises an arc-shaped body, the inner side and the outer side of the body are both provided with arc-shaped reinforcing plates, a plurality of first grooves are evenly formed in the reinforcing plate on the inner side in the axial direction, a plurality of second grooves are evenly formed in the reinforcing plate on the outer side in the axial direction, and the first grooves and the second grooves are arranged in a staggered mode. The machining process of the punch includes the steps of adopting a round bar, conducting rough turning at first, and reserving an allowance; conducting heat treatment and then conducting finish turning; and finally using a low-speed wire for cutting the appearance. Practice shows that the reinforced punch machined and produced through the process and provided with the guide thick plates and the narrow grooves can be used for punching for 100 thousand times without being damaged, so that the efficiency of mass production is greatly improved, and cost for production die maintenance and cost for spare parts are lowered.

Description

technical field [0001] The invention relates to a processing technology of a punch, in particular to a processing technology of a reinforced punch with a thick plate with a guide and a narrow groove. Background technique [0002] The existing punch processing technology is as follows: 1. Cut out the shape of the punch with square material slow thread; 2. Mill out the front-end punching groove part with the machining center to complete the processing. [0003] There are two major problems with this processing technology. The first is the heat treatment of the square material, and the hardness difference between the surface and the core is relatively large. The second is that the machining center processes the end of the punch. Because the material has been heat-treated and quenched during processing, the hardness is large. The processing will generate heat, resulting in residual processing stress in the working part of the punch, which will cause the punch to easily crack dur...

AI Technical Summary

Problems solved by technology

[0003] There are two major problems with this processing technology. The first is the heat treatment of the square material, and the hardness difference between the surface and the core is relatively large. The second is that the machining center processes the end of the punch. Because the material has been heat-treated and quenched during processing, the hardness is large. The processing will generate heat, resulting in residual processing stress in the working part of the punch, which will cause the punch to crack easily during the stamping process

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