Inner hexagonal fine punching die

A technology of fine punching and punching die, applied in the field of inner hexagonal fine punching die, can solve the problems such as the temperature of the punch can not be dissipated in time, the hexagonal position is not full, the performance of the punch is degraded, etc., so as to improve the surface quality of the product and the full hexagonal position. , The effect of reducing work resistance

Inactive Publication Date: 2012-07-18
苏州新凌高强度紧固件有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In view of the above-mentioned technical problems, the object of the present invention is to propose a hexagonal fine punching die to solve the problem that the temperature of the punch can

Method used

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  • Inner hexagonal fine punching die
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  • Inner hexagonal fine punching die

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Embodiment Construction

[0013] The present invention is described below in conjunction with accompanying drawing.

[0014] attached figure 1 , 2 It is a kind of inner hexagon fine punching die according to the present invention, including a die body 1, the die body is made of 7Cr7M02v2si material, one end of the die body 1 is set as a conical end 2; the end surface of the conical end 2 is provided with a groove 3; a punching needle is provided in the groove 3; the punching needle is composed of a hexagonal prism 4 and a head end 5; the head end 5 is a frustum-shaped structure with hexagonal edges; the head end 5 and the hexagon of the hexagonal prism 6 are provided with cutting edge 6; the effective length L of cutting edge 6 on the hexagonal prism 6 is 2.1mm; .

[0015] The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present i...

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Abstract

The invention discloses an inner hexagonal fine punching die which comprises a punching die body, wherein one end of the punching die body is configured as a conical end; a groove is arranged on the end surface of the conical end; a punching needle is arranged in the groove and comprises a six-edge column body and a head end; the head end is in a frustum-shaped structure provided with six edges; and cutting edges are arranged on the head end and all the six edges of the six-edge column body. As the groove is arranged on a contact surface (the end surface of the conical end) in a punching process, heat quantity generated by the punching needle in the punching process can be timely diffused out from the groove so that the inner hexagonal fine punching die in the invention prevents the phenomenon of punching and cutting due to reduced mechanical properties caused by an over high temperature; due to the design of included angles and cutting edges on the conical top of frustums on the six-edge column body and the head end, the working resistance is reduced, the surface quality of a product is improved, and the corners of an inner hexagon are full; and the service life of the inner hexagonal fine punching die is also prolonged, the using cost is reduced, and the quality of the product is ensured.

Description

technical field [0001] The invention relates to a punching die, in particular to an inner hexagon fine punching die. Background technique [0002] Hexagon socket screws are widely used in various fields such as automobiles, aerospace, aviation, etc., and hexagon socket screws play a vital locking role in various mechanical mechanisms. At present, the hexagon socket head screw is mainly formed by cold heading, and the shape of the hexagon socket head is generally formed by punching the whole hexagon socket die. In order to obtain the product smoothly, a large punching force must be used. In the actual use of these extrusion dies, the temperature of the punch cannot be dissipated in time, resulting in a decrease in the performance of the punch and easy punching, so that the hexagonal position of the punched extrusion is not good. Too full, the life is short, making it difficult to control the quality; at the same time, the surface roughness of the mold itself is poor, and the...

Claims

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Application Information

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IPC IPC(8): B21D37/10
Inventor 张加成
Owner 苏州新凌高强度紧固件有限公司
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