CN211101104U

CN211101104U - Forming punch for press

Info

Publication number: CN211101104U
Application number: CN201920981594.7U
Authority: CN
Inventors: 樊晨辉; 王玉杰; 裴华; 王战冶; 黄喆; 刘赛; 吴大伟; 曹伟; 薛子鑫
Original assignee: Luoyang Luoxi Precision Forging Heavy Industry Co ltd; Luoyang LYC Bearing Co Ltd
Current assignee: Luoyang Bearing Group Co ltd; Luoyang Luoxi Precision Forging Heavy Industry Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-07-28
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a forming punch for press, including the drift body, the lower extreme circumference of drift body is provided with the buffer portion that prevents splitting that inside metal flow shocks resistance when enabling drift body lower extreme striking. The buffer part is an inverted circular truncated cone-shaped inclined surface arranged on the circumferential direction of the lower end of the punch body. The common forming punch has the advantages that the stress is large in the two-pass forming process, the common forming punch is easy to break during impact, the lower end of the punch body is provided with the inclined plane, metal is easy to flow during impact, the stress of the forming punch is reduced, the service life of a die is prolonged, the metal is easy to flow, the stress of equipment is correspondingly small, the condition of overload work of the equipment cannot occur, the fault rate of the equipment is reduced, and the punch body is convenient to process and convenient to popularize.

Description

Forming punch for press

Technical Field

The utility model relates to a shaping drift fracture field that shocks resistance for the press specifically is a shaping drift for press.

Background

The existing forming punch front end is mostly of a plane structure, when a forging blank is formed by a press, the forming punch front end is a plane, the metal flowing difficulty is increased, the difficulty of the backward extrusion process is large, the equipment load is increased, the equipment failure rate is increased, the forming punch is easy to crack, the service life of a die is shortened, the cost is increased, and therefore the punch for the press, which has certain fluidity to prevent cracking when being impacted, is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a forming punch for press to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the forming punch for the press comprises a punch body, wherein a buffer part which enables the inner metal to flow, resist impact and prevent breakage when the lower end of the punch body is impacted is arranged at the lower end of the punch body in the circumferential direction, the buffer part is an inverted-truncated-cone-shaped inclined surface arranged at the lower end of the punch body in the circumferential direction, and the angle between the inclined surface and the bottom surface of the punch body ranges from 15 degrees to 21 degrees.

Preferably, the cross section of the inclined surface is in a convex arc shape.

Preferably, the angle between the inclined surface and the bottom surface of the punch body is 18 °.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the common forming punch has larger stress in the two forming processes and is easy to break when being impacted, the lower end of the punch body is provided with an inclined plane, and metal is easy to flow when being impacted, so that the stress of the forming punch is reduced, and the service life of a die is prolonged;

2. the metal is easy to flow, the stress of the equipment is correspondingly small, the condition of overload work of the equipment cannot occur, and the failure rate of the equipment is reduced;

3. the punch body is convenient to process and popularize.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a prior art metal flow line;

fig. 4 is a schematic view of the metal flow line of the present invention.

In the figure: 1 punch body, 2 inclined plane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 2, the present invention provides a forming punch for a press, comprising: the utility model provides a shaping drift for press, including drift body 1, drift body 1 upper end is the trapezoidal form, the centre is cylindrically, the downside diameter slowly reduces, certain gradient has, this is prior art, the lower extreme circumference of drift body 1 is provided with the buffer portion that can make 1 lower extreme striking of drift body prevent fracture that inside metal flows to shock resistance, the buffer portion is for seting up at the inclined plane 2 of the round frustum of the round of 1 lower extreme circumference of drift body, width from the bottom up crescent, the cross-section of inclined plane 2 is the convex arc of evagination, the circular arc transition, it is better to shock resistance, angle between 2 and the 1 bottom surface of drift body is 15 ~ 21, the angle undersize, the too big easy deformation of mobility, too big mobility reduces, easy fracture, the angle between 2 and the 1 bottom surface of drift body is 18, this angle is moderate, mobility is better.

The working principle is as follows: ordinary shaping drift atress is great in two forming process, during the striking, easy fracture, the lower extreme of this drift body 1 is provided with inclined plane 2, diameter from the bottom up crescent, during the striking, easy deformation, the metal easily flows, reduces the atress of shaping drift, extension mould life, the metal easily flows, equipment atress is also corresponding less, the condition of equipment overload work can not appear, reduce equipment fault rate, this drift body 1 processing is convenient, is convenient for popularize.

As shown in fig. 3 to 4, it can be seen that, after the punch body 1 is provided with the inclined surface 2, the lower side flow line is smoother and smoother, and does not change abruptly, so that the punch body is not easy to break.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shaping drift for press, includes drift body (1), its characterized in that: the punching head comprises a punching head body (1), wherein a buffer part which enables the inner metal to flow, impact resistance and fracture prevention when the lower end of the punching head body (1) is impacted is arranged at the circumferential direction of the lower end of the punching head body (1), the buffer part is an inverted circular truncated cone-shaped inclined surface (2) arranged at the circumferential direction of the lower end of the punching head body (1), and an angle between the inclined surface (2) and the bottom surface of the punching head body (1) ranges from 15 degrees to 21 degrees.

2. The forming punch for a press according to claim 1, characterized in that: the cross section of the inclined plane (2) is in a convex arc shape.

3. The forming punch for a press according to claim 1, characterized in that: the angle between the inclined surface (2) and the bottom surface of the punch body (1) is 18 degrees.