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Powder metallurgy gear hub forming die

A forming mold and powder metallurgy technology, applied in the field of powder metallurgy, can solve the problems of unstable forming process, unstable fit gap between outer punch and middle punch, etc., and achieve the effect of improving stability, increasing mold life, and reducing the risk of mold jamming

Pending Publication Date: 2021-12-03
江苏智造新材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the disadvantages in the prior art that the force of the mold during the forming process makes the matching gap between the outer punch and the middle punch unstable, resulting in an unstable forming process, the present invention provides a powder metallurgy gear hub Forming mold

Method used

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  • Powder metallurgy gear hub forming die
  • Powder metallurgy gear hub forming die
  • Powder metallurgy gear hub forming die

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Embodiment Construction

[0016] The present invention will be described in detail in conjunction with accompanying drawing now. This figure is a simplified schematic diagram only illustrating the basic structure of the present invention in a schematic manner, so it only shows the components relevant to the present invention.

[0017] Such as Figure 1-3 As shown, a powder metallurgy gear hub forming die of the present invention includes an upper punch and a lower punch, both of which include an outer punch 1 and a middle punch 2, and the outer punch 1 is sleeved in the middle On the outside of the punch 2, a plurality of positioning rings 101 arranged along the circumferential direction are provided on the rear side of the inner wall of the outer punch 1, and a plurality of positioning rings 101 that cooperate with the positioning rings 101 are provided on the outer wall of the middle punch 2 along the circumferential direction. Positioning key 201, the positioning key 201 is arranged along the lengt...

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Abstract

The invention provides a powder metallurgy gear hub forming die. The powder metallurgy gear hub forming die comprises an upper punching die and a lower punching die, each of the upper punching die and the lower punching die comprises an outer punching part and a middle punching part, the outer punching parts are arranged on the outer sides of the middle punching parts in a sleeving mode, a plurality of positioning rings arranged in the circumferential direction are arranged on the rear sides of the inner wall surfaces of the outer punching parts, and a plurality of positioning keys matched with the positioning rings are arranged on the outer wall surfaces of the middle punching parts in the circumferential direction at intervals. According to the powder metallurgy gear hub forming die, the stability in the die production process is improved, the die clamping risk is reduced, and the service life of the die is prolonged; the quality stability in the part production process is improved; the jumping precision of the external tooth end surface of the part is improved, and external tooth end surface machining is omitted.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a powder metallurgy gear hub forming die. Background technique [0002] At present, the production process of powder metallurgy gear hub mainly includes the following processes: forming, sintering hardening, shaping, machining, etc. Due to the particularity of the structure of the gear hub parts, most of the parts have more than 3 evenly distributed gaps, resulting in the outer punch of the hub part forming die usually being a piece-shaped tooth structure that cooperates with the gear hub, and the piece-shaped tooth structure is still The positioning section that cooperates with the middle punch, in order to avoid mold jamming during work, a space-avoiding section is set on the inner wall of the outer punch and the outer wall of the middle punch, and the space-avoiding section is set on the rear side of the positioning section. [0003] During the forming process, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/03B22F5/08
CPCB22F3/03B22F5/08
Inventor 张艳伟钱夏晨石小荣夏敏刘桦
Owner 江苏智造新材有限公司
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