CN217665866U

CN217665866U - Special-shaped punch suitable for shaft sleeve flanging riveting

Info

Publication number: CN217665866U
Application number: CN202221923383.6U
Authority: CN
Inventors: 陈华山; 韦嘉特
Original assignee: Dongguan Fergas Fan Co ltd
Current assignee: Dongguan Fergas Fan Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-10-28
Anticipated expiration: 2032-07-25

Abstract

The utility model belongs to the technical field of hardware stamping die technique and specifically relates to a special-shaped drift suitable for axle sleeve turn-ups riveting is related to. The special-shaped punch suitable for flanging and riveting the shaft sleeve comprises a base and a punch main body arranged on the base; the base and the punch main body are both hollow structures; the upper end of the punch head main body comprises an upper end face and a step face arranged on the side of the upper end face; an annular groove is formed in the upper end face; at least one protrusion is arranged in the annular groove along the circumferential direction. The utility model discloses a special-shaped drift suitable for axle sleeve turn-ups riveting has solved current axle sleeve and can produce the waste material of a plurality of irregular connections when carrying out turn-ups riveting processing, and the riveting part of axle sleeve easily produces the crackle to cause the problem that riveting intensity is low, effectively reduce the defective rate of product.

Description

Special-shaped punch suitable for shaft sleeve flanging riveting

Technical Field

The utility model belongs to the technical field of hardware stamping die technique and specifically relates to a special-shaped drift suitable for axle sleeve turn-ups riveting is related to.

Background

The flanging process refers to a stamping method for turning the hole edge or the outer edge of the plate into a whole edge by using a die, and is called flanging. The new edge can be used for processing a three-dimensional part with a special space shape and good rigidity, and parts assembled with other parts, such as nail laying holes, thread bottom holes, bearing seats and the like, can be manufactured on the stamping part. Riveting, that is, rivet connection, is a method of connecting a plurality of parts by upsetting a stem in a rivet hole of the part with an axial force to form a head.

The shaft sleeve can generate a plurality of irregularly-connected wastes when the conventional punch is used for punching, flanging and riveting, and the flanging and riveting part of the shaft sleeve can easily generate cracks, so that the problems of low riveting strength and high defective rate of products occur in subsequent riveting treatment.

The above drawbacks are expected to be overcome by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, the utility model provides a can be rapidly with the special-shaped drift of axle sleeve turn-ups riveted that is applicable to of axle sleeve riveting part separation.

In order to achieve the above object, the utility model discloses a main technical scheme include:

a special-shaped punch suitable for shaft sleeve flanging riveting comprises a base and a punch main body arranged on the base; the base and the punch main body are both of hollow structures; the upper end of the punch head main body comprises an upper end face and a step face arranged on the upper side of the upper end face; an annular groove is formed in the upper end face; at least one protruding piece is evenly arranged in the annular groove along the circumferential direction. Through with base, the drift main part that is applicable to axle sleeve turn-ups riveted dysmorphism drift sets up to hollow structure, sets up the annular groove at the up end of drift to at least one bellying is equipped with in the annular groove, makes the axle sleeve by its riveting portion cutting separation rapidly after the punching press, realizes that turn-ups riveting portion is difficult for producing the crackle, can strengthen subsequent riveting intensity, makes the product appearance more pleasing to the eye, and the structure is more stable, effectively reduces the defective products rate.

Further, base, drift main part are the cylinder, and this base, drift main part are the coaxial line setting. Furthermore, the inner side walls of the base and the punch main body are cylindrical surfaces. So that the special-shaped punch is more suitable for the shaft sleeve.

Further, the cross section of the convex part is a triangle of which the bottom side is a circular arc. The cross section of the protruding part is a triangle with an arc bottom, and the sharp angle at the top of the protruding part is beneficial to cutting and separating the shaft sleeve riveting part by the special-shaped punch.

Preferably, the height of the protruding part is equal to or higher than the upper end surface.

Preferably, the protruding piece is a hard alloy component. Through setting up the bellying for the carbide component, the hardness of carbide component is high, is favorable to the dysmorphism drift is with axle sleeve riveting part cutting separation to long service life.

Preferably, the annular groove is uniformly provided with a first protrusion piece, a second protrusion piece, a third protrusion piece, a fourth protrusion piece, a fifth protrusion piece and a sixth protrusion piece along the circumferential direction. The cutting and separation of the riveted part of the shaft sleeve into six parts are realized.

Preferably, the base and the punch body are integrally formed. The manufacturing is convenient, in the stamping process, the structure is more stable, and the stamping effect can be improved.

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

1. the utility model discloses a special-shaped drift suitable for axle sleeve turn-ups riveted, through with its base, the drift main part sets up to hollow structure, set up the annular groove at the up end of drift, and at least one bellying has evenly been installed in the annular groove, make the axle sleeve separate rapidly by its riveting part after the punching press, realize the production of the waste material that significantly reduces, turn-ups riveting part is difficult for producing the crackle, can strengthen subsequent riveting intensity, make product appearance more pleasing to the eye, the structure is more stable, effectively reduce the defective index.

2. The cross section of the protruding part is a triangle with an arc bottom, and the sharp angle at the top of the protruding part is beneficial to cutting and separating the shaft sleeve riveting part by the special-shaped punch.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the present invention.

[ REFERENCE INDICATIONS ] 1, a base; 2. a punch body; 21. an upper end surface; 22. a step surface; 3. an annular groove; 4. a boss member; 41. a first projecting member; 42. a second boss member; 43. a third boss member; 44. a fourth projecting member; 45. a fifth boss member; 46. and a sixth projection.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Please refer to fig. 1 and 2, in order to provide a special-shaped punch for shaft sleeve flanging riveting according to an embodiment of the present invention, the special-shaped punch for shaft sleeve flanging riveting includes a base 1 and a punch body 2. The punch body 2 is mounted on the upper part of the base 1. The base 1 is arranged in a cylinder shape; the base 1 is of a hollow structure, and the inner side wall of the base 1 is a cylindrical surface. The punch head main body 2 is arranged in a cylindrical shape; the punch main body 2 is of a hollow structure, and the inner side wall of the punch main body 2 is a cylindrical surface. Base 1, drift main part 2 are the coaxial line setting to integrated into one piece makes special-shaped drift is applicable to the punching press of axle sleeve more and handles.

The upper end of the punch main body 2 comprises an upper end surface 21 and a step surface 22; the upper end of the punch body 2 is also provided with an annular groove 3 and at least one bulge piece 4. The step surface 22 is arranged on the upper side of the upper end surface 21; a transition surface is arranged between the step surface 22 and the upper end surface 21. The annular groove 3 is arranged on the upper end surface 21; the section of the annular groove 3 along the radial direction is semicircular. At least one of the protruding members 4 is uniformly arranged in the annular groove 3 along the circumferential direction, and the height of the protruding member 4 is equal to or higher than the upper end surface 21.

In the present embodiment, the annular groove 3 is uniformly provided with a first protruding member 41, a second protruding member 42, a third protruding member 43, a fourth protruding member 44, a fifth protruding member 45 and a sixth protruding member 46 along the circumferential direction. So that the special punch adapted to the flange-riveting of the sleeve can rapidly cut and separate the riveted portion of the sleeve into six portions by installing the first boss 41, the second boss 42, the third boss 43, the fourth boss 44, the fifth boss 45, and the sixth boss 46. In other embodiments, three protrusions 4, four protrusions 4, or five protrusions 4 may be uniformly arranged in the annular groove 3 along the circumferential direction, and the protrusions may be divided into several parts according to the actual riveting portion of the shaft sleeve, which is not limited thereto.

The cross section of the protrusion 4 is a triangle with a circular arc bottom surface, and in the present embodiment, the angle of the top of the triangle is set to 20 °. The sharp angle of the top of the protruding member 4 enables the shaped punch to cut and separate the sleeve rivet portion quickly. In other embodiments, the angle of the top of the triangle may be set to 25 °, 30 ° or 35 °, and the disclosure is not limited thereto. The protruding part 4 is provided as a cemented carbide member. In this embodiment, the protruding part 4 is made of tungsten-cobalt hard alloy, so that the protruding part has high hardness and good wear resistance, the special-shaped punch suitable for flanging and riveting the shaft sleeve can cut and separate the riveted part of the shaft sleeve, and the special-shaped punch has the advantage of long service life. In other embodiments, the protrusion 4 may be a tungsten-titanium-cobalt hard alloy member, which is not limited thereto.

During use, a shaft sleeve needing flanging and riveting is placed on the die below the special-shaped punch suitable for shaft sleeve flanging and riveting, then the punch is started to enable the special-shaped punch to face downwards to punch the shaft sleeve, the step surface 22 of the punch main body 2 punches and flanging the shaft sleeve, and then the plurality of protruding pieces 4 arranged in the annular groove 3 contact with the riveting portion of the shaft sleeve and cut the riveting portion, so that the riveting portion of the shaft sleeve is rapidly separated into a plurality of portions. Therefore, the special-shaped punch can greatly reduce waste, the flanging riveting part of the shaft sleeve is not easy to crack, and subsequent riveting strength can be enhanced, so that the product appearance is more attractive, the structure is more stable, and the defective rate is effectively reduced.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A special-shaped punch suitable for flanging and riveting a shaft sleeve is characterized by comprising a base (1) and a punch main body (2) arranged on the base (1); the base (1) and the punch head main body (2) are both of hollow structures; the upper end of the punch head main body (2) comprises an upper end surface (21) and a step surface (22) arranged on the upper side of the upper end surface (21); an annular groove (3) is formed in the upper end face (21); at least one protruding piece (4) is evenly arranged in the annular groove (3) along the circumferential direction.

2. The special-shaped punch suitable for shaft sleeve flanging riveting according to claim 1, wherein the base (1) and the punch main body (2) are both cylinders, and the base (1) and the punch main body (2) are coaxially arranged.

3. The special-shaped punch suitable for riveting shaft sleeve flanging according to claim 1, wherein the inner side walls of the base (1) and the punch body (2) are cylindrical surfaces.

4. The special-shaped punch suitable for flanging and riveting the shaft sleeve as claimed in claim 1, wherein the cross section of the protruding piece (4) is a triangle with a circular arc at the bottom.

5. The shaped punch for shaft sleeve flange riveting according to claim 4, characterized in that the height of the protruding piece (4) is equal to or higher than the upper end surface (21).

6. The special-shaped punch suitable for flanging and riveting the shaft sleeve as claimed in claim 4, wherein the protruding piece (4) is a hard alloy component.

7. The special-shaped punch suitable for shaft sleeve flanging riveting is characterized in that a first protruding piece (41), a second protruding piece (42), a third protruding piece (43), a fourth protruding piece (44), a fifth protruding piece (45) and a sixth protruding piece (46) are uniformly arranged in the annular groove (3) along the circumferential direction.

8. The special-shaped punch suitable for shaft sleeve flanging riveting according to any one of claims 1-7, wherein the base (1) and the punch body (2) are integrally formed.