CN212664791U

CN212664791U - Cold header

Info

Publication number: CN212664791U
Application number: CN202020466754.7U
Authority: CN
Inventors: 燕存露; 曾建华
Original assignee: Hubei Youqian Auto Parts Co ltd
Current assignee: Hubei Youqian Auto Parts Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-03-09
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a cold header, which comprises a frame; a cold-pressing die for upsetting blank parts; the driving device is arranged on the rack; wherein, cold pressing mould includes: the fixed die is arranged on the rack, and a first cold heading bulge, a first cold heading groove and a first cold heading stepped surface are sequentially arranged on the side surface of the fixed die; and the side surface of the movable die is sequentially provided with a second cold heading bulge, a second cold heading groove and a second cold heading stepped surface. Above-mentioned cold heading machine can be with blank material mound formation pilot pin, has solved the problem that pilot pin manufacturing cost is high.

Description

Cold header

Technical Field

The utility model relates to a bolt processing technology field especially relates to a cold heading machine.

Background

Currently, as shown in fig. 1 and 2, in order to machine the positioning pin 02 with the positioning protrusion 022 at the tail part, the polished rod 011 of the blank material 01 needs to be machined, but the manufacturing method generates scraps and wastes the blank raw material. Therefore, how to save the processing cost of the positioning bolt is an urgent problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cold heading machine, this cold heading machine can be pressed blank material mound and form the pilot pin, has solved the high problem of pilot pin manufacturing cost.

In order to achieve the above object, the utility model provides a cold heading machine, include: a frame; a cold-pressing die for upsetting blank parts; the driving device is arranged on the rack; wherein, cold pressing mould includes: the fixed die is arranged on the rack, and a first cold heading bulge, a first cold heading groove and a first cold heading stepped surface are sequentially arranged on the side surface of the fixed die; the side surface of the movable die is sequentially provided with a second cold heading bulge, a second cold heading groove and a second cold heading stepped surface; the first cold heading bulge and the second cold heading bulge are used for upsetting a polished rod of the blank material piece and forming an annular positioning groove; the first cold heading groove and the second cold heading groove are used for upsetting the polish rod and forming a positioning bulge; the first cold-heading stepped surface and the second cold-heading stepped surface are used for upsetting the polished rod and forming a positioning end.

Preferably, the first axial surface of the first cold-heading stepped surface is higher than the first cold-heading projection; and the second axial surface of the second cold heading stepped surface is higher than the second cold heading protrusion.

Preferably, the distance between the first contact surface of the fixed die and the second contact surface of the movable die is equal to the diameter of the polish rod.

Preferably, the first radial surface of the first cold-heading stepped surface is used for abutting against the end surface of the polish rod; and the second radial surface of the second cold-heading stepped surface is used for abutting against the end surface of the polish rod.

Preferably, the first cold-heading bulge, the first cold-heading groove and the first cold-heading stepped surface extend to two ends of the fixed die; the second cold-heading arch, the second cold-heading recess with the second cold-heading ladder surface three all extends to the both ends of movable mould.

Preferably, the material of both the fixed die and the movable die is high-speed steel.

Preferably, the fixed die and the movable die are both linear; the driving device is specifically a linear driving device.

Preferably, the fixed die and the movable die are both arc-shaped; the driving device is specifically a rotary driving device.

Preferably, the radius of the movable die is greater than that of the fixed die, and the first cold-heading protrusion, the first cold-heading groove and the first cold-heading stepped surface are arranged on the outer ring side surface of the fixed die; the second cold-heading arch the second cold-heading recess with second cold-heading ladder surface three locates the inner ring side of movable mould.

Compared with the prior art, the utility model provides a cold heading machine presses the polished rod of blank material spare to form the pilot pin through cover half and movable mould mound. Specifically, the side surfaces of the fixed die and the movable die are opposite, a blank material piece is placed between the fixed die and the movable die, then the movable die is controlled to move along the side surface of the fixed die, the first cold-heading protrusion and the second cold-heading protrusion are enabled to be in pier pressing with the polished rod and form the positioning groove, the first cold-heading groove and the second cold-heading groove are enabled to be in pier pressing with the polished rod and form the positioning protrusion, the first cold-heading stepped surface and the second cold-heading stepped surface are enabled to be in pier pressing with the end portion of the polished rod and form the positioning end, and then chipless machining of the positioning bolt is completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of a blank material part in the prior art;

FIG. 2 is a schematic view of a prior art positioning pin;

fig. 3 is a schematic view of the working principle of the cold pressing mold provided by the present invention;

FIG. 4 is a schematic structural diagram of the stationary mold in FIG. 3;

FIG. 5 is a schematic structural diagram of the movable mold shown in FIG. 3;

fig. 6 is a schematic structural view of a cold pressing mold according to an embodiment of the present invention;

wherein the content of the first and second substances,

01-blank material part, 011-polished rod, 02-positioning bolt, 021-positioning groove, 022-positioning protrusion, 023-positioning end, 1-fixed die, 11-first cold heading protrusion, 12-first cold heading groove, 13-first cold heading stepped surface, 131-first radial surface, 132-first axial surface, 14-first contact surface, 15-first non-contact surface, 2-movable die, 21-second cold heading protrusion, 22-second cold heading groove, 23-second cold heading stepped surface, 231-second radial surface, 232-second axial surface, 24-second contact surface and 25-second non-contact surface.

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.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 3 to fig. 6, fig. 3 is a schematic view illustrating a working principle of a cold pressing mold according to the present invention; FIG. 4 is a schematic structural diagram of the stationary mold in FIG. 3; FIG. 5 is a schematic structural diagram of the movable mold shown in FIG. 3; fig. 6 is a schematic structural view of a cold pressing mold provided by an embodiment of the present invention.

The utility model provides a cold header, which mainly comprises a frame and a cold pressing die driving device, wherein the driving device is arranged on the frame; as shown in fig. 3 and 6, the cold pressing die comprises a fixed die 1 and a movable die 2, the fixed die 1 is fixed on the frame, as shown in fig. 4, a first cold heading bulge 11, a first cold heading groove 12 and a first cold heading stepped surface 13 are sequentially arranged on the side surface of the fixed die 1, and the first cold heading bulge 11, the first cold heading groove 12 and the first cold heading stepped surface 13 divide the side surface of the fixed die 1 into a first contact surface 14 and a first non-contact surface 15; and the movable mold 2 is connected to a driving means so that the movable mold 2 can move relative to the fixed mold 1, as shown in fig. 5, the side surface of the movable mold 2 is provided with a second cold-heading protrusion 21, a second cold-heading groove 22 and a second cold-heading stepped surface 23 in this order, and the second cold-heading protrusion 21, the second cold-heading groove 22 and the second cold-heading stepped surface 23 divide the side surface of the movable mold 2 into a second contact surface 24 and a second non-contact surface 25.

The processing flow of the positioning bolt 02 is mainly described with respect to the structure of the cold header, and the first step is as follows: moving the movable mold 2 to the vicinity of the fixed mold 1 by a driving means so that side surfaces of both the fixed mold 1 and the movable mold 2 are opposed; the second step is that: placing the blank material member 01 between the fixed mold 1 and the movable mold 2, and bringing the polish rod 011 of the blank material member 01 into contact with the side surfaces (excluding the first non-contact surface 15 and the second non-contact surface 25) of both the fixed mold 1 and the movable mold 2; the third step: the movable die 2 is driven to move through the driving device, the polished rod 011 rotates under the action of the movable die 2 and moves along the side surface of the fixed die 1, in the process, the polished rod 011 is pressed by the first cold-heading bulge 11 and the second cold-heading bulge 21 to form the positioning groove 021, the polished rod 011 is pressed by the first cold-heading groove 12 and the second cold-heading groove 22 to form the positioning bulge 022, and the end part of the polished rod 011 is pressed by the first cold-heading stepped surface 13 and the second cold-heading stepped surface 23 to form the positioning end 023.

It can be seen that the cold header can upset the blank material part 01 into the positioning pin 02 by using the plastic deformation of the metal, and no blank raw material is wasted in the process of processing the blank material part 01.

It should be noted that, as shown in fig. 3, both the first axial surface 132 of the first cold-heading stepped surface 13 and the second axial surface 232 of the second cold-heading stepped surface 23 are used for upsetting the end of the polish rod 011, so that the end of the polish rod 011 is plastically deformed, and the machining and forming of the positioning end 023 are further realized; as can be seen from fig. 1, the diameter of the positioning tip 023 is smaller than the diameter of the positioning groove 021, and for this purpose, as shown in fig. 4 and 5, the first axial surface 132 should be higher than the first cold-heading protrusion 11 with the first contact surface 14 as the datum surface, and similarly, the second axial surface 232 should be higher than the second cold-heading protrusion 21 with the second contact surface 24 as the datum surface.

It is worth mentioning that, in order to avoid the blank material from moving toward the head of the polished rod 011, as shown in fig. 3 to 5, during the process of processing the polished rod 011, the distance between the first contact surface 14 of the fixed die 1 and the second contact surface 24 of the movable die 2 is preferably designed to be the diameter of the polished rod 011, so that the blank material moving by deformation is moved only toward the first cold-heading groove 12 and the second cold-heading groove 22 during the process of pressing the polished rod 011 by the first cold-heading protrusion 11 and the second cold-heading protrusion 21, so as to form the positioning protrusion 022. Of course, if the size of the positioning protrusion 022 is large, the distance between the first contact surface 14 and the second contact surface 24 can be designed to be smaller than the diameter of the polish rod 011.

In addition, both the first radial surface 131 of the first cold-heading stepped surface 13 and the second radial surface 231 of the second cold-heading stepped surface 23 are used for supporting the end surface of the polish rod 011, in other words, as shown in fig. 4 and 5, both the first radial surface 131 and the second radial surface 231 extend towards the other direction, so that during the process of machining the blank material part 01, the first radial surface 131 and the second radial surface 231 are abutted against the end surface of the polish rod 011, the blank material which deforms and moves the end part of the polish rod 011 moves towards the first cold-heading groove 12 and the second cold-heading groove 22 only, and the machining forming of the positioning end 023 and the positioning protrusion 022 is realized.

In order to facilitate the processing of the blank material member 01, the first cold-heading projection 11, the first cold-heading groove 12 and the first cold-heading stepped surface 13 all extend to both ends of the fixed die 1, and similarly, the second cold-heading projection 21, the second cold-heading groove 22 and the second cold-heading stepped surface 23 all extend to both ends of the movable die 2, so that in the above-mentioned second step, the third step can be performed after the polish rod 011 is placed at one end of the fixed die 1.

In order to guarantee the service life of the fixed die 1 and the movable die 2, the fixed die 1 and the movable die 2 are made of high-speed steel materials, wherein the high-speed steel materials have the characteristics of low abrasion resistance and high hardness, so that the first cold-heading protrusion 11, the first cold-heading concave part, the first cold-heading stepped surface 13, the second cold-heading protrusion 21, the second cold-heading groove 22 and the second cold-heading stepped surface 23 are not easy to deform, and the size specification of the positioning bolt 02 is guaranteed to meet the requirements.

As shown in fig. 6, both the fixed mold 1 and the movable mold 2 described above may be designed in a linear shape, that is, side surfaces of both the fixed mold 1 and the movable mold 2 extend in a linear direction toward both ends thereof, and the driving means is embodied as a linear driving means and is used to drive the movable mold 2 to move in the linear direction; the structure and functional principle of the linear driving device can be referred to the prior art, and the detailed description is omitted.

Of course, both the fixed mold 1 and the movable mold 2 may be designed to be circular arc-shaped, that is, the fixed mold 1 and the movable mold 2 are coaxially arranged, and the side surfaces of the fixed mold 1 and the movable mold 2 extend toward both ends thereof along the circular arc direction, and the driving device is embodied as a rotation driving device and is used for driving the movable mold 2 to rotate; the structure and functional principle of the rotary driving device can be referred to the prior art, and the structure and functional principle are not improved; preferably, the radius of the movable mold 2 is larger than that of the fixed mold 1, the side surface of the movable mold 2 is the inner ring side surface of the movable mold 2, and the side surface of the fixed mold 1 is the outer ring side surface of the fixed mold 1.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above the utility model provides a cold heading machine has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A cold heading machine, comprising:

a frame;

a cold-pressing die for upsetting the blank material (01);

the driving device is arranged on the rack;

wherein, cold pressing mould includes:

the fixed die is arranged on the rack (1), and a first cold heading bulge (11), a first cold heading groove (12) and a first cold heading stepped surface (13) are sequentially arranged on the side surface of the fixed die (1);

the side surface of the movable die (2) is sequentially provided with a second cold heading bulge (21), a second cold heading groove (22) and a second cold heading stepped surface (23);

the first cold heading bulge (11) and the second cold heading bulge (21) are used for upsetting the polish rod (011) of the blank material piece (01) and forming an annular positioning groove (021); the first cold heading groove (12) and the second cold heading groove (22) are used for upsetting the polish rod (011) and forming a positioning bulge (022); first cold-heading stairstep face (13) with second cold-heading stairstep face (23) are used for mound pressure polished rod (011) and form location end (023).

2. A cold heading machine according to claim 1, wherein the first axial face (132) of the first cold heading stepped face (13) is higher than the first cold heading projection (11); and a second axial surface (232) of the second cold heading stepped surface (23) is higher than the second cold heading bulge (21).

3. A cold heading machine according to claim 2, wherein the distance between the first contact surface (14) of the stationary die (1) and the second contact surface (24) of the movable die (2) is equal to the diameter of the polish rod (011).

4. A cold header according to claim 2, wherein the first radial face (131) of the first cold-heading stepped face (13) is adapted to abut against an end face of the polish rod (011); and a second radial surface (231) of the second cold-heading stepped surface (23) is used for abutting against the end surface of the polish rod (011).

5. A cold heading machine according to claim 4,

the first cold heading bulge (11), the first cold heading groove (12) and the first cold heading stepped surface (13) all extend to two ends of the fixed die (1);

the second cold heading protrusion (21), the second cold heading groove (22) and the second cold heading stepped surface (23) all extend to two ends of the movable die (2).

6. A cold heading machine according to claim 5, wherein the material of both the stationary die (1) and the movable die (2) is high speed steel.

7. A cold heading machine according to any one of claims 1 to 6, wherein the fixed die (1) and the movable die (2) are each linear; the driving device is specifically a linear driving device.

8. A cold heading machine according to any one of claims 1 to 6, wherein the fixed die (1) and the movable die (2) are each in the shape of a circular arc; the driving device is specifically a rotary driving device.

9. A cold header according to claim 8, wherein the radius of the movable die (2) is larger than that of the fixed die (1), and the first cold header protrusion (11), the first cold header groove (12) and the first cold header step surface (13) are arranged on the outer ring side surface of the fixed die (1); the second cold-heading arch (21), second cold-heading recess (22) with second cold-heading stair surface (23) three locates the inner ring side of movable mould (2).