CN203664473U - Long-life punching male die structure - Google Patents

Long-life punching male die structure Download PDF

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Publication number
CN203664473U
CN203664473U CN201320792105.6U CN201320792105U CN203664473U CN 203664473 U CN203664473 U CN 203664473U CN 201320792105 U CN201320792105 U CN 201320792105U CN 203664473 U CN203664473 U CN 203664473U
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CN
China
Prior art keywords
male die
plane
punch
long
life
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201320792105.6U
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Chinese (zh)
Inventor
戴发庆
陈鹏鹏
何学东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Pengxiang Automobile Co Ltd
Original Assignee
Shandong Pengxiang Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Pengxiang Automobile Co Ltd filed Critical Shandong Pengxiang Automobile Co Ltd
Priority to CN201320792105.6U priority Critical patent/CN203664473U/en
Application granted granted Critical
Publication of CN203664473U publication Critical patent/CN203664473U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a long-life punching male die structure. The long-life punching male die structure is composed of a male die (1) and a punching male die guiding column (2) which are of an integral structure. The long-life punching male die structure is characterized in that the upper plane of the male die (1) is of a non-integral plane structure, the edge of the upper plane of the male die (1) is provided with a chamfer with the angle ranging from 3 degrees to 5 degrees, the diameter D1 of a plane circle in the middle of the upper plane of the male die (1) is controlled within the range being smaller than the diameter D of the punching male die guiding column (2) by 1-2 mm, and the lower end face of the male die (1) is in transition with a guiding plane (3) of the punching male die guiding column (2) through a 30-degree conical face. Due to the fact that the stress face is not the overall stress of the upper plane but the stress of the size range of D1 of the plane circle in the middle of the upper plane of the male die, the stress concentration at the conical transitional circular bead is reduced, the anti-fatigue ability of the male die is improved, and service life is prolonged.

Description

A kind of long-life piercing punch structure
Technical field:
The utility model relates to Stamping Die Technology field, is a kind of long-life piercing punch structure specifically.
Background technology:
At present in the structure of diel, on piercing punch, plane is all integral planar type structure, although this frame mode has simple in structure, the good advantage of manufacturability,, due to the reason of structure aspects, the stress at knuckle place is concentrated serious, and punch anti-fatigue ability is poor, and service life is low, through lower plane and the fracture of spigot surface connection place of being everlasting, need often to change punch, bring larger investment to punching production, production cost is higher.
Utility model content:
The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and a kind of long-life piercing punch structure is provided, and mainly solves low, the problem such as investment is large, production cost is high in existing punch service life.
The technical solution of the utility model is: a kind of long-life piercing punch structure, formed by punch and piercing punch lead, the two is structure as a whole, its special character is, the upper plane of described punch is non-integral planar structure, there are 3 ° ~ 5 ° chamferings at its edge, and the flat circle diameter D1 on punch in the middle of plane is controlled in the size range of the few 1 ~ 2mm of piercing punch lead diameter D, and the spigot surface of the lower surface of punch and piercing punch lead adopts 30 ° of conical surface transition.
Compared with the prior art a kind of long-life piercing punch structure described in the utility model has following good effect, plane on the punch of employing non-integral planar structure, when punching because stress surface is not that the entirety of upper plane is stressed, but on punch the flat circle diameter D1 size range in the middle of plane stressed, thereby the stress that has reduced conical surface transition place is concentrated, improve drift anti-fatigue ability, thereby reach the object increasing the service life.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A part enlarged drawing of Fig. 1.
The specific embodiment:
Below in conjunction with drawings and the specific embodiments, the utility model is described in further details; Illustrated embodiment is only for explaining the utility model, not for limiting scope of the present utility model.
Embodiment 1, referring to Fig. 1,2, according to designing requirement, processing punch 1 and piercing punch lead 2, on punch, plane 1 is not to adopt integral planar structure, but edge carries out 3 ° ~ 5 ° processing of chamfering, the flat circle diameter D1 in the middle of plane on punch 1 is controlled in the size range of the few 1 ~ 2mm of piercing punch lead 2 diameter D simultaneously, the spigot surface 3 of the lower surface of punch 1 and piercing punch lead 2 adopts 30 ° of conical surface transition, and the two is structure as a whole.
A kind of long-life piercing punch structure of the present utility model, when punching, because stress surface is not that on punch, the entirety of plane is stressed, but middle flat circle D1 size range is stressed; Thereby the stress that has reduced conical surface transition place is concentrated, and improves drift anti-fatigue ability, thereby reaches the object increasing the service life.

Claims (1)

1. a long-life piercing punch structure, formed by punch (1) and piercing punch lead (2), the two is structure as a whole, it is characterized in that, the upper plane of described punch (1) is non-integral planar structure, there are 3 ° ~ 5 ° chamferings at its edge, flat circle diameter D1 in the middle of the upper plane of punch (1) is controlled in the size range of the few 1 ~ 2mm of piercing punch lead (2) diameter D, and the spigot surface (3) of the lower surface of punch (1) and piercing punch lead (2) adopts 30 ° of conical surface transition.
CN201320792105.6U 2013-12-06 2013-12-06 Long-life punching male die structure Expired - Lifetime CN203664473U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320792105.6U CN203664473U (en) 2013-12-06 2013-12-06 Long-life punching male die structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320792105.6U CN203664473U (en) 2013-12-06 2013-12-06 Long-life punching male die structure

Publications (1)

Publication Number Publication Date
CN203664473U true CN203664473U (en) 2014-06-25

Family

ID=50960806

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320792105.6U Expired - Lifetime CN203664473U (en) 2013-12-06 2013-12-06 Long-life punching male die structure

Country Status (1)

Country Link
CN (1) CN203664473U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20140625

CX01 Expiry of patent term