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Cold precision forging tooth die for bevel gear

A bevel gear, cold precision forging technology, applied in the direction of wheels, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve the problem of insufficient service life of the lower mold core, increased cost of re-molding, broken teeth Damage and other problems, to achieve the effect of long service life, uniform force, easy manufacture

Inactive Publication Date: 2010-01-20
JIANGSU AIRSHIP GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service life of the lower mold core of this structure is not long enough, and its damage is mainly concentrated at the protruding tooth root cavity, which is deformed by the extruded material during forging and even broken due to the protruding cavity without the mold base material. Tooth damage, increasing retooling costs

Method used

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  • Cold precision forging tooth die for bevel gear

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Embodiment Construction

[0011] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments. The cold precision forging bevel gear tooth form mold shown in the accompanying drawing is the embodiment of cold precision forging the bevel gear of Volkswagen gearbox, and it includes a lower mold core 1, a bevel tooth mold cavity 2 and a circular through hole 3. The lower mold core 1 is disc-shaped, the upper and lower end faces are parallel to each other, and the vertical round through hole 3 in the middle communicates with the bevel-toothed mold cavity 2 above. The upper end surface of the lower mold core 1 is flat, and the conical-toothed mold cavity 2 is concave downward based on the upper end surface of the lower mold core 1 as a plane. In the present invention, the bevel-tooth-shaped mold cavity is all recessed in the lower mold core, and the overall structural strength is high, and the force is uniform, so that mold damage accid...

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Abstract

The invention discloses a cold precision forging tooth die for a bevel gear, which comprises a lower die core, a bevel die cavity and a round through hole, wherein the lower die core forms a round disk shape, and an upper end face and a lower end face of the lower die core are parallel to each other; the round through hole with a vertical central part is communicated with the bevel die cavity; the upward end face of the lower die core is of a plate shape; and the bevel die cavity uses the upper end face of the lower die core as a plane standard to recess downwards. The bevel die cavity in the cold precision forging tooth die for the bevel gear entirely recesses in a lower die, so that the entire structural strength is high, the stress is uniform to avoid the accident of die damage caused by broken teeth, and the die has long service life.

Description

technical field [0001] The invention relates to a forging die, in particular to a bevel gear tooth die. Background technique [0002] Cold precision forging forming technology is a recognized advanced manufacturing technology in contemporary times. Its forging has no oxide layer on the surface, good forming accuracy, dense metal structure, high structural strength, and energy saving and material saving in the manufacturing process. According to the conventional design, the tooth-shaped mold of the bevel gear is the lower mold, and most of the bevel tooth-shaped mold cavity is recessed in the lower mold core, and only the large-end tooth root cavity of the bevel gear is on the plane of the lower mold core. The lower mold and upper mold of this structure are accurately matched, and the loading and demoulding are convenient, which fully meet the forming requirements of cold precision forging high-precision bevel gears. However, the service life of the lower mold core of this s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/30B21J13/02
Inventor 葛珍小
Owner JIANGSU AIRSHIP GEAR
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