CN213793765U

CN213793765U - Flanging hole stamping device

Info

Publication number: CN213793765U
Application number: CN202020938506.8U
Authority: CN
Inventors: 赵勤东
Original assignee: Zhongshan Digital Model Automobile Technology Co ltd
Current assignee: Zhongshan Digital Model Automobile Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-07-27
Anticipated expiration: 2030-05-28

Abstract

The application discloses flanging hole stamping device, it includes: go up drift and lower mould subassembly, go up the drift including from supreme order setting down: butt joint portion, with butt joint portion connection and lateral wall along the axial stress portion that leans out the extension, be connected with stress portion and the lateral wall along the axial fillet transition portion that leans out the extension and the drift body of being connected with fillet transition portion, wherein, the crossing contained angle that forms of stress portion lateral wall extension line is 30-50 degrees, and the contained angle that fillet transition portion lateral wall and last drift axis formed is 15-25 degrees, and stress portion lateral wall length is 6-10 mm. The application has optimized the inclination and the length of drift atress portion lateral wall, and the frictional force with the metalwork when having reduced the drift punching press reduces, has improved the impulsive force when the drift punching press, and the drift passes the metalwork more easily, and the recoil force that the drift received is littleer, is difficult to the fracture, has prolonged life, has strengthened the bulk strength of atress portion, can bear bigger recoil force.

Description

Flanging hole stamping device

Technical Field

The utility model belongs to the technical field of mechanical die production and processing, especially, relate to a flanging hole stamping device.

Background

In the production process of metal fittings, metal fittings are often required to be punched and flanged, for example, a plurality of flanging holes are required on automobile fittings, the flanging holes refer to a forming method of forming a straight wall or a flange with a certain angle along a closed or unclosed curve edge on a plane part or a curved part of a blank by using the action of a die, a punch is required during punching, but the existing punch does not optimize the shape angle, has small punching force during punching, is not easy to punch metal, and is easy to break when the punch is punched for a long time, so that the punch has short service life, and the processing cost is high.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to overcome the defects, the utility model aims to provide a flanging hole punching device to insufficient impulsive force and easy fracture when solving the punching press of the existing punch, the technical problem that the punch life is short.

(II) technical scheme

In order to achieve the purpose, the technical scheme provided by the application is as follows:

a flanging hole stamping device, comprising: go up drift and lower mould subassembly, go up the drift including from supreme order setting down: butt joint portion, with butt joint portion connection and lateral wall along the axial stress portion that leans out the extension, be connected with stress portion and the lateral wall along the axial fillet transition portion that leans out the extension and the drift body of being connected with fillet transition portion, wherein, the crossing contained angle that forms of stress portion lateral wall extension line is 30-50 degrees, and the contained angle that fillet transition portion lateral wall and last drift axis formed is 15-25 degrees, and stress portion lateral wall length is 6-10 mm.

The application optimizes the inclination and the length of the side wall of the stressed part of the punch, the included angle of the extension lines of the two side walls of the stressed part is 30-50 degrees, the included angle between the side wall of the stressed part and the axis of the upper punch is 15-25 degrees, the friction force between the side wall of the stressed part and a metal piece is reduced when the punch performs punching, the impact force when the punch performs punching is improved, the punch can penetrate through the metal piece more easily, the back impact force received by the punch is smaller, the punch is not prone to fracture, the service life is prolonged, the length of the side wall of the stressed part is increased to 6-10mm, the overall strength of the stressed part is enhanced, larger back impact force can be borne, the punch is further prevented from being fractured, and the service life of the punch is prolonged.

In some embodiments, the lower die assembly comprises: the stamping die comprises a lower die plate and a die bush, wherein a stamping groove for embedding the die bush is formed in the lower die plate, the inner wall of the stamping groove inclines outwards along the axial line of the stamping groove from bottom to top and forms an included angle of 15-25 degrees with the central axis of the stamping groove, during processing, a stamping sheet is placed on the lower die plate, when an upper die head is used for stamping, the stamping sheet can be stamped into the die bush to form a flanging hole structure, the inner wall of the stamping groove of the lower die plate is set to incline outwards by 15-25 degrees, so that the film on the surface of the stamping sheet is damaged due to friction with the edge of the stamping groove when the stamping sheet enters the die bush, the bright surface of the stamping sheet is affected, the stamping sheet is easy to decay, and the quality of the stamping sheet is affected.

In some embodiments, the included angle formed by the intersection of the extension lines of the side walls of the stress part is 40 degrees, so that the inclination angle of the side wall of the stress part is optimized, the friction force between the punch and a metal piece during punching is further reduced, the punching force of the punch during punching is improved, the recoil force of the punch is reduced, and the service life of the punch is prolonged.

In some embodiments, the included angle formed by the side wall of the fillet transition part and the axis of the upper punch is 20 degrees, the inclined angle of the side wall of the fillet transition part is optimized, the friction force between the punch and a metal piece during punching is further reduced, the punch can more easily penetrate through a stamping part during punching, the recoil force received by the punch is reduced, and the service life of the punch is prolonged.

In some embodiments, the included angle of 20 degrees is formed between the inner wall of the stamping groove and the central axis of the stamping groove, the inclination of the inner wall of the stamping groove is optimized, the friction of the inner wall of the stamping groove on the surface of the stamping part is avoided as much as possible, and the integrity of the bright surface of the stamping part is ensured.

In some embodiments, the length of the side wall of the stressed part is 8mm, the length of the side wall of the stressed part is optimized, the overall strength of the stressed part is further enhanced, larger impact force can be borne, the punch is prevented from being broken, and the service life of the punch is prolonged.

Drawings

Fig. 1 is a schematic structural view of a flanging hole punching device of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a partial enlarged view of portion B of FIG. 1;

fig. 4 is a schematic structural view of the punch of the present invention;

fig. 5 is a schematic structural view of the lower template of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1-4, the present invention provides a flanging hole stamping device, which includes: go up drift and lower mould subassembly, the upper punch can form four positions from supreme down and constitute, is respectively: butt portion 1, atress portion 2, fillet transition portion 3 and drift body 4, butt portion 1 is direct to punch a hole with the stamping workpiece contact, atress portion 2 is connected with butt portion 1 and the lateral wall extends along the axial to leaning out, fillet transition portion 3 is connected with atress portion 2 and the lateral wall extends along the axial to leaning out, fillet transition portion 3 connects drift body 4, wherein, 2 crossing contained angle alpha that forms of lateral wall extension line of atress portion is 30-50 degrees, 3 lateral walls of fillet transition portion are 15-25 degrees with the contained angle beta that last drift axis formed, 2 lateral wall length L of atress portion is 6-10 mm.

The application has optimized the inclination and the length of 2 lateral walls of the force-bearing part of the punch, the extension line included angle alpha of 2 lateral walls of the force-bearing part is 30-50 degrees, the included angle beta of 2 lateral walls of the force-bearing part and the upper punch axis is 15-25 degrees, the friction force between the punch and the metal piece during punching is reduced, the punching force during punching of the punch is improved, the punch passes through the metal piece more easily, the recoil force received by the punch is smaller, the punch is not easy to break, the service life is prolonged, the length L of 2 lateral walls of the force-bearing part is increased to 6-10mm, the overall strength of 2 force-bearing parts is enhanced, larger recoil force can be borne, the punch is further prevented from breaking, and the service life of the punch is prolonged.

Specifically, the lower die assembly includes: lower bolster 5 and die bush 6, set up the punching press groove in the lower bolster 5, die bush 6 is embedded into in the punching press groove, and during the punching press, the punching press head can be with the stamping workpiece rush into die bush 6 in make it open out the flanging hole. Preferably, the inner wall of the stamping groove is inclined outwards from bottom to top along the central axis of the stamping groove and forms an included angle of 15-25 degrees with the central axis of the stamping groove, so that the stamping part is not easy to rub against the inner wall of the stamping groove of the lower template 5 when the stamping head extrudes to move downwards to enter the die bush 6, and the integrity of the bright surface of the punched flanging hole is ensured.

Preferably, the angle alpha formed by the intersection of the extension lines of the side walls of the force-bearing part 2 is 40 degrees.

Preferably, the included angle beta formed by the side wall of the fillet transition part 3 and the axis of the upper punch is 20 degrees.

Preferably, the angle θ formed by the inner wall of the punching groove and the central axis of the punching groove is 20 degrees.

Preferably, the length L of the side wall of the force receiving part 2 is 8 mm.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A flanging hole stamping device, characterized by, includes: go up drift and lower mould subassembly, go up the drift including from the lower supreme order setting up: butt portion (1), with butt portion (1) is connected and the lateral wall stress portion (2) that extend along the axial to lean out, with stress portion (2) are connected and the lateral wall fillet transition portion (3) that extend along the axial to lean out and with drift body (4) that fillet transition portion (3) are connected, wherein, the crossing contained angle alpha that forms of stress portion (2) lateral wall extension line is 30-50 degrees, fillet transition portion (3) lateral wall with the contained angle beta that the last drift axis formed is 15-25 degrees, stress portion (2) lateral wall length L is 6-10 mm.

2. The burring hole stamping device of claim 1, wherein the lower die assembly comprises: lower bolster (5) and die bush (6), set up the confession in lower bolster (5) the punching press groove of die bush (6) embedding, wherein, the inner wall from the bottom up in punching press groove is followed the punching press groove the central axis leans out the setting and with the central axis in punching press groove forms the contained angle of 15-25 degrees.

3. The flanging hole punching device according to claim 1 or 2, wherein an included angle α formed by intersecting extension lines of side walls of the force-bearing part (2) is 40 degrees.

4. The flanging hole punching device according to claim 1 or 2, wherein the included angle β formed by the side wall of the fillet transition part (3) and the axis of the upper punch is 20 degrees.

5. The burring hole punching device of claim 2, wherein an angle θ formed by the inner wall of the punching groove and the central axis of the punching groove is 1.5 to 2 degrees.

6. The flanging hole punching device according to claim 2, wherein the length L of the side wall of the force-receiving portion (2) is 8 mm.