CN203526330U

CN203526330U - Stretched punching pin

Info

Publication number: CN203526330U
Application number: CN201320511141.0U
Authority: CN
Inventors: 刘勇; 刘兴全
Original assignee: Tianjin Huashun Auto Parts Manufacture Group Co Ltd
Current assignee: Tianjin Huashun Auto Parts Manufacture Group Co Ltd
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-04-09
Anticipated expiration: 2023-08-20

Abstract

The utility model discloses a stretched punching pin, and relates to a punching mold, in particular to a punching pin of a punching mold. The stretched punching pin comprises a punching pin base and a punching pin end face. A transition stretched face is arranged between the punching pin base and the punching pin end face, is composed of a third stretched face body, a second stretched face body and a first stretched face body, and is in inward retraction transition. The inward retraction angle between the third stretched face body and the vertical face ranges from 10 degrees to 15 degrees, the inward retraction angle between the second stretched face body and the vertical face ranges from 15 degrees to 20 degrees, and the inward retraction angle between the first stretched face body and the vertical face ranges from 20 degrees to 30 degrees. The stretched punching pin has the advantages that after the transition punching face is adopted, the punching force acting on the punching pin can be effectively relieved, damage, caused by excessively large punching force of the punching pin, to a product is avoided, and the production cost is reduced.

Description

Draw punch

Technical field

The utility model relates to a kind of diel, refers more particularly to a kind of drift of diel.

Background technology

The conventional diel of metalwork processing completes, and stretching is the conventional operation of extrustion of metals, and during due to punching press, impulse force is very large, easily makes metalwork tear, and has increased production cost.

Summary of the invention

The utility model is just in order to address the above problem, and a kind of draw punch is provided, and impulse force when it can slow down punching press avoids that impulse force is excessive causes tearing of metalwork.

In order to achieve the above object, the technical solution adopted in the utility model is:

A kind of draw punch, it is characterized in that: comprise drift base and punch end face, between described drift base and punch end face, be provided with the Extrude Face of transition, described excessive Extrude Face is comprised of the 3rd Extrude Face, the second Extrude Face, the first Extrude Face, and inwardly indentation transition, wherein the angle that inside contracts between the 3rd Extrude Face and vertical plane is 10-15 °, and the angle that inside contracts between the second Extrude Face and vertical plane is 15-20 °, and the angle that inside contracts between the first Extrude Face and vertical plane is 20-30 °.

The beneficial effects of the utility model are that, after employing transition stamping surface, effectively the impulse force of mitigation on drift, avoids the excessive infringement that product is made of Impulsive force of punch pin, has reduced production cost.

Accompanying drawing explanation

Fig. 1 is the main schematic diagram of the utility model structure;

In figure: 1. punch end face; 2. the first Extrude Face; 3. the second Extrude Face; 4. the 3rd Extrude Face; 5. drift base.

The specific embodiment

Below by embodiment, the utility model is described further.

From accompanying drawing 1, the utility model comprises drift base 5 and punch end face 1, between described drift base 5 and punch end face 1, be provided with the Extrude Face of transition, described excessive Extrude Face is comprised of the 3rd Extrude Face 4, the second Extrude Face 3, the first Extrude Face 2, and inwardly indentation transition, wherein the angle that inside contracts between the 3rd Extrude Face 4 and vertical plane is 10-15 °, the angle that inside contracts between the second Extrude Face 3 and vertical plane is 15-20 °, and the angle that inside contracts between the first Extrude Face 2 and vertical plane is 20-30 °.

Due to Extrude Face transition indentation gradually, when metalwork is stretched, can alleviate drift to the direct impulse force of metalwork, avoid that impulse force is excessive causes tearing of metalwork.

It should be noted that embodiment described in the utility model is only to realize optimal way of the present utility model, to belonging to the utility model general idea, and is only apparent change, within all should belonging to protection domain of the present utility model.

Claims

1. a draw punch, it is characterized in that: comprise drift base and punch end face, between described drift base and punch end face, be provided with the Extrude Face of transition, described excessive Extrude Face is comprised of the 3rd Extrude Face, the second Extrude Face, the first Extrude Face, and inwardly indentation transition, wherein the angle that inside contracts between the 3rd Extrude Face and vertical plane is 10-15 °, and the angle that inside contracts between the second Extrude Face and vertical plane is 15-20 °, and the angle that inside contracts between the first Extrude Face and vertical plane is 20-30 °.