CN218503001U

CN218503001U - Three round pin axle warm extrusion devices

Info

Publication number: CN218503001U
Application number: CN202222680471.4U
Authority: CN
Inventors: 陈志�; 刘龙明; 袁平; 周千里
Original assignee: Zhejiang Defu Precision Drive Manufacturing Co ltd
Current assignee: Zhejiang Defu Precision Drive Manufacturing Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-02-21
Anticipated expiration: 2032-10-12

Abstract

The utility model relates to a warm extrusion device of three round pin axles belongs to automobile parts processing technology field, including last die, the inside swing joint of last die has last terrace die, it is provided with assorted lower punch with it to go up the die below, the inside swing joint of lower die has lower terrace die, lower terrace die and last terrace die end position are provided with the extrusion end, the bar has been placed between lower terrace die and the last terrace die, the round pin head chamber has all been seted up to last die and lower die opposite face. The beneficial effects of the utility model are that, preheated bar is placed between terrace die and the last terrace die down, and exert pressure through terrace die and last terrace die down, thereby make the terrace die extrude the bar, the extrusion end of extruded in-process terrace die can be with bar middle part extrusion for the cavity of three round pin axles, and receive the round pin head that forms three round pin axles between extruded bar can and the round pin head chamber of last die and lower terrace die, its process can be once only with AAR three round pin axle extrusion, processing steps effectively reduces, efficiency improves greatly.

Description

Three round pin axle warm extrusion devices

Technical Field

The utility model relates to an automobile parts processing technology field specifically is a three round pin axle temperature extrusion devices.

Background

The three-pin joint is used as a key part of a constant velocity universal joint, is an important part on an automobile transmission shaft, and is divided into an AAR joint and a GI joint according to different structures, wherein the AAR joint consists of an AAR three-pin shaft and three rollers, the AAR three-pin shaft is provided with three roller seats, the rollers are positioned in the roller seats, the outer surfaces of the roller seats are spherical, the central shaft of the AAR three-pin shaft 1 is used as a circular point, and the diameter of a circle formed by taking the distance from the central shaft to the spherical center of the roller seats as a radius is called as the diameter of the AAR three-pin shaft joint circle (PCD).

At present, the extrusion production of the three-pin shaft in the market is a three-step upsetting-extruding process of firstly extruding a rod part, then upsetting a head part and finally reversely extruding an inner cavity, the production steps are complicated, the production efficiency is low, and a three-pin shaft warm extrusion device is provided aiming at the situation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three round pin axle warm extrusion device to propose the loaded down with trivial details problem of three round pin axle extrusion production steps in solving above-mentioned background art.

The technical scheme of the utility model is that:

the improved extrusion die comprises an upper female die, wherein an upper male die is movably connected inside the upper female die, a lower female die matched with the upper female die is arranged below the upper female die, a lower male die is movably connected inside the lower female die, extrusion ends are arranged at the lower male die and the upper male die, a bar is placed between the lower male die and the upper male die, pin head cavities are formed in opposite surfaces of the upper female die and the lower female die, the bar forms a three-pin shaft after being extruded by the lower male die and the upper male die, the outer wall of the three-pin shaft is provided with three pin heads, and a cavity is formed in the middle of the three-pin shaft in an extrusion mode.

Furthermore, positioning pins are arranged in the upper female die and the lower female die.

Further, the temperature of the bar stock is controlled to be 850-940 ℃.

The utility model discloses an improve and provide a three round pin axle warm extrusion devices here, compare with prior art, have following improvement and advantage:

one is as follows: the utility model discloses, preheated bar is placed between terrace die and the last terrace die down, and exert pressure through terrace die and last terrace die down, thereby make the terrace die extrude the bar, the extrusion end of extruded in-process terrace die can be with bar middle part extrusion for the cavity of three round pin axle, and receive the round pin head that forms three round pin axles between extruded bar meeting and the round pin head cavity of last die and lower terrace die, its process can be once only with AAR three round pin axle extrusion, processing steps effectively reduces, efficiency improves greatly.

The second step is as follows: the utility model discloses, the temperature control of bar is at 850 ℃ -940 ℃, and this three round pin axle 9's extrusion technology is warm extrusion, with the temperature control of bar at certain within range, it takes shape more easily, the tonnage of press also can reduce, the life-span of mould can prolong moreover.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic view of the structure of the present invention in the squeezed state;

FIG. 2 is a schematic view of the structure of the extrusion molding state of the present invention;

fig. 3 is a schematic view of the front view structure of the three-pin shaft of the present invention;

fig. 4 is a schematic diagram of a side view structure of the three pin shafts of the present invention.

Description of reference numerals: 1. a female die is arranged; 2. an upper male die; 3. a lower concave die; 4. a lower male die; 5. extruding the end head; 6. a bar stock; 7. a pin head cavity; 8. positioning pins; 9. three pin shafts; 10. a pin head; 11. a cavity.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 4, and the technical solutions in the embodiments of the present invention will be clearly and completely described, 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.

The utility model discloses an improvement provides a three round pin warm extrusion device here, as shown in fig. 1-fig. 4, including last die 1, the inside swing joint of last die 1 has last terrace die 2, it is provided with assorted lower die 3 with it to go up die 1 below, the inside swing joint of lower die 3 has lower terrace die 4, lower terrace die 4 and the 2 end positions of last terrace die are provided with extrusion end 5, bar 6 has been placed between lower terrace die 4 and the last terrace die 2, round pin head chamber 7 has all been seted up to last die 1 and the 3 opposite face of lower terrace die, bar 6 forms three round pin axle 9 after lower terrace die 4 and the extrusion of last terrace die 2, three round pin axle 9 outer wall is provided with three round pin head 10, three round pin axle 9 middle part extrusion has cavity 11, before extrusion process, place bar 6 after preheating under terrace die 4 and go up between terrace die 2 earlier, and exert pressure through lower terrace die 4 and last terrace die 2, thereby make the terrace die extrude bar 6, extrusion end 5 of extrusion process can be three round pin head 11 of 6 middle part for three round pin axle 9 with bar 6, and the effective extrusion process of the round pin head that the formation of the round pin axle 9 between die 1 and the last terrace die 7, it can reduce three round pin head extrusion process.

Go up die 1 and the inside locating pin 8 of all having seted up of lower die 3, locating pin 8 can effectively improve the butt joint precision between the mould, guarantees the extrusion effect.

The temperature of the bar 6 is controlled to be 850-940 ℃, the extrusion process of the three-pin shaft 9 is warm extrusion, the temperature of the bar 6 is controlled to be within a certain range, the forming is easier, the tonnage of a press machine can be reduced, and the service life of a die is prolonged.

The working principle is as follows: firstly, before extrusion processing, an intermediate frequency heating furnace is used for heating a bar 6 to 850-940 ℃, the extrusion process of the three-pin shaft 9 is warm extrusion, the temperature of the bar 6 is controlled within a certain range, the bar is easier to form, the tonnage of a press machine can be reduced, the service life of a die is prolonged, then the bar 6 is placed between a lower convex die 4 and an upper convex die 2, the lower convex die 4 and the upper convex die 2 are pressed by the press machine, the bar 6 is extruded by matching with a concave die, the middle of the bar 6 is extruded and formed into a cavity 11 of the three-pin shaft 9 by an extrusion end 5 of the convex die in the extrusion process, a pin head 10 of the three-pin shaft 9 is formed between the extruded bar 6 and a pin head cavity 7 of the upper concave die 1 and a pin head cavity 7 of a lower concave die 3, the AAR three-pin shaft 9 can be extruded and formed in one step, the processing steps are effectively reduced, and the efficiency is greatly improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a three round pin axle warm extrusion devices which characterized in that: including last die (1), go up die (1) inside swing joint has last terrace die (2), it is provided with lower matrix (3) of assorted with it to go up die (1) below, die (3) inside swing joint has lower terrace die (4) down, lower terrace die (4) and upper punch (2) end position are provided with extrusion end (5), bar (6) have been placed between lower terrace die (4) and upper punch (2), round pin head chamber (7) have all been seted up to last die (1) and lower matrix (3) opposite face, bar (6) form three round pin axle (9) through lower terrace die (4) and upper punch (2) extrusion back, three round pin axle (9) outer wall is provided with three round pin head (10), three round pin axle (9) middle part extrusion has cavity (11).

2. The apparatus according to claim 1, wherein the apparatus comprises: and positioning pins (8) are arranged in the upper female die (1) and the lower female die (3).

3. The apparatus according to claim 1, wherein the apparatus comprises: the temperature of the bar stock (6) is controlled to be 850-940 ℃.