CN115007786A

CN115007786A - Tooth-shaped forming die for part with teeth on end face

Info

Publication number: CN115007786A
Application number: CN202210667512.8A
Authority: CN
Inventors: 刘勇; 陈伟; 隋天龙; 黄泽江; 王文吉
Original assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Current assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-06

Abstract

The invention discloses a tooth form forming die of a part with teeth on the end face, which comprises a heading tooth male die (1), a die filling cavity (2), a die pad (3), a mandril (4) and a guide round female die (5), and is characterized in that the die is provided with a guide round female die; the lower end head of the upsetting tooth male die (1) is inserted into the upper end of the guide round female die (5), a plurality of annularly arranged teeth are arranged on the lower end face of the upsetting tooth male die (1), a groove is formed in the center of the upsetting tooth male die, and a die filling cavity (2) is sleeved outside the guide round female die (5). The invention has low cost, high efficiency and good product quality, and can be produced in batch.

Description

Tooth form forming die for end face toothed part

Technical Field

The invention belongs to the technical field of machinery, and particularly relates to a tooth-shaped forming die for a part with teeth on an end face.

Background

For a long time, the processing of the tooth form of small parts with teeth on the end faces of materials difficult to process, such as high-temperature alloy and the like, is difficult, and the conventional mode basically uses a hobbing cutter for hobbing, but because the processing materials are special and the small parts are processed, the hobbing cutter for hobbing is worn quickly, so that the problems of high processing cost, low processing efficiency, high batch production difficulty and the like are caused.

Disclosure of Invention

The invention aims to overcome the defects and provide the tooth-shaped forming die for the parts with the toothed end surfaces, which has low cost, high efficiency and good product quality and can be produced in batch.

The purpose of the invention and the main technical problem of solving the invention are realized by adopting the following technical scheme:

the invention relates to a tooth-shaped forming die for a part with teeth on the end face, which comprises a heading tooth male die, a die-filling cavity, a die pad, a mandril and a guide round female die, wherein the die pad is arranged on the die pad; the lower end head of the upsetting tooth male die is inserted into the upper end of the guide round female die, a plurality of annularly arranged teeth are arranged on the lower end face of the upsetting tooth male die, a groove is formed in the center of the upsetting tooth male die, and a die filling cavity is sleeved outside the guide round female die.

And die cushions are arranged below the die cavity and the guide round female die, and ejector rods are inserted into the die cushions.

The heading tooth male die can move up and down in the guide round female die.

The ejector rod can move up and down in the die cushion.

Compared with the prior art, the invention has obvious beneficial effects; the technical scheme shows that: a plurality of annularly arranged teeth are arranged on the lower end face of the heading tooth male die, a groove is formed in the center of the heading tooth male die, and blank parts to be formed into tooth shapes are heated and then placed into the guide round female die. The upsetting tooth male die descends along with an upper die base of the press machine, the upsetting tooth male die enters the guide round female die, and the part is continuously upset downwards under the guide effect of the guide round female die, so that the pressure of the press machine is transmitted to a plurality of annularly arranged teeth arranged on the lower end face of the upsetting tooth male die, and the end faces of the part are pressed into a plurality of annularly arranged tooth shapes by the plurality of annularly arranged teeth under the action of the pressure; the end face tooth shape is formed through the tool, in terms of efficiency, the forming process of the end face tooth shape is about 4 seconds, and the machining efficiency is improved by more than 10 times compared with a traditional hobbing mode; in terms of performance, a small groove (when no hole is formed in the center of a part, the concave hole is not formed in the lower end face of the upsetting tooth male die) is designed to achieve metal center shunting during upsetting of the tooth profile, and the metal can easily flow during plastic forming, so that the upsetting tooth profile is fuller. The tooth profile formed by the forming mode is full, and the metal flow line is well preserved due to plastic forming, so that the performance of the end face tooth profile formed by the forming mode is far superior to that of an end face tooth profile processed by a traditional hobbing mode; in addition, in the aspect of processing cost, the tool uses a hot heading mode when forming the end face tooth profile, and the blank made by heating and heading reduces the deformation resistance of materials, so the tooth profile forming force is relatively small, the service life of a die is greatly prolonged, the processing cost of tooth profile processing is reduced, the cost is saved by more than 3 times compared with the traditional hobbing processing mode by initial estimation, and the problem that the traditional processing mode cannot be produced in batches is solved. In summary; the invention has low cost, high efficiency and good product quality, and can be produced in batch.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2A-A;

FIG. 4 is a schematic structural view of the male heading tool of the present invention;

FIG. 5 is an enlarged view of FIG. 4 a;

FIG. 6 is a state diagram of the use of the present invention;

FIG. 7 is a schematic view of the structure of the part to be machined according to the present invention;

FIG. 8 is a schematic view of the machined part of the present invention.

In the drawings, reference numerals

1. The forging tooth male die comprises a forging tooth male die, 2, a die filling cavity, 3, a die pad, 4, an ejector rod, 5, a guide round female die and 6, parts.

Detailed Description

The details of the embodiments, structures, features and functions according to the present invention are described in the following detailed description and the preferred embodiments.

The invention relates to a tooth-shaped forming die for a part with a toothed end face, which comprises a heading tooth male die 1, a die filling cavity 2, a die pad 3, a mandril 4 and a guide round female die 5, wherein the die pad is fixedly connected with the die pad; the lower end head of the upsetting tooth male die 1 is inserted into the upper end of the guide round female die 5, a plurality of annularly arranged teeth are arranged on the lower end face of the upsetting tooth male die 1, a groove is formed in the center of the upsetting tooth male die, and a die filling cavity 2 is sleeved outside the guide round female die 5.

And a die cushion 3 is arranged below the die cavity 2 and the guide round female die 5, and a mandril 4 is inserted into the die cushion 3.

The heading tooth male die 1 can move up and down in the guide round female die 5.

The ejector pin 4 can move up and down in the die pad 3.

When in use, referring to fig. 6, the upsetting male die 1 is arranged on an upper die base of a pressure device, the ejector rod 4, the die pad 3, the die cavity 2 and the guide round female die 5 are arranged in the die cavity of a lower die base of the pressure device, a press machine is started, after debugging is completed, a heated blank part 6 is placed in the guide round female die 5, the upsetting male die 1 descends along with the upper die base of the press machine and enters the guide round female die 2, the upsetting part 6 continues to descend under the guide action of the guide round female die 2, so that the pressure of the press machine is transmitted to female teeth of the upsetting male die 1, the female teeth plastically deform the blank upper end surface of the part 6 under the action of the pressure to further form the tooth profile of the upper end surface of the part, the forming and the complete forming are finished along with the operation of the pressure device to the lower dead center, then the upsetting male die 1 ascends along with the pressure device and exits from the guide round female die 5 to the upper dead center of the pressure device, meanwhile, the air cylinder on the pressure equipment works to push the ejector rod 4 to withdraw the part 5, and a working cycle is completed.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.

Claims

1. A tooth-shaped forming die for a part with teeth on the end face comprises a heading tooth male die (1), a die-filling cavity (2), a die pad (3), a mandril (4) and a guide round female die (5), and is characterized in that the die pad is a hollow round die; the lower end head of the heading tooth male die (1) is inserted into the upper end of the guide round female die (5), a plurality of annularly arranged teeth are arranged on the lower end face of the heading tooth male die (1), a groove is formed in the center of the heading tooth male die, and a die cavity (2) is sleeved outside the guide round female die (5).

2. The tooth forming die for face-toothed parts of claim 1, wherein; and a die cushion (3) is arranged below the die filling cavity (2) and the guide round female die (5), and a mandril (4) is inserted into the die cushion (3).

3. The tooth forming die for face-toothed parts of claim 1, wherein; the upsetting tooth male die (1) can move up and down in the guide round female die (5).

4. A tooth forming die for an end-face toothed part as claimed in claim 2, wherein; the ejector rod (4) can move up and down in the die pad (3).