Forging technology of combination gear

A technology combining teeth and technology, which is applied in the field of forging metal parts, can solve the problems affecting the accuracy of tooth shape, reverse taper angle and lead-in angle, small tooth lead-in angle deformation, etc., to improve the precision of combined teeth, reduce shear force, reduce The effect of elastic deformation

Active Publication Date: 2020-10-02
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

During the back taper process of this method, due to the different deformations and different forces of each section of the small tooth, the lead-in angle of the small tooth is deformed, and the large diameter affects the tooth shape accuracy, back taper angle and lead-in angle.

Method used

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  • Forging technology of combination gear
  • Forging technology of combination gear
  • Forging technology of combination gear

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] The invention provides a forging process for combining teeth, including:

[0030] Step 1, the hot forging process, so that the coupling teeth are initially formed;

[0031] Step 2, finishing process, forging the lead-in angle of the tooth tip, the large diameter of the tooth and part of the involute tooth surface;

[0032] Step 3, reverse taper process, forging the involute tooth sur...

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Abstract

The invention relates to a forging technology of a combination gear. The forging technology comprises the steps that 1, the hot forging process is performed to preliminarily form the combination gear;2, the finishing process is performed, and the tooth tip leading-in angle, the tooth major diameter and the involute tooth surface are forged; and 3, the upconing process is performed, and a chamferof the involute tooth surface is forged. The forging technology is characterized in that in the finishing process, part of the tooth major diameter and\or the tooth surface generates underfills; and in the upconing process, the allowance of the upper position on the involute tooth surface of the combination gear is consistent with that of the lower position on the involute tooth surface of the combination gear. According to the forging technology of the combination gear, elastic deformation of the upconing process is reduced, the service life of an upconing die is prolonged, the size of a forged piece better conforms to that of the die, meanwhile, deformation of the leading-in angle of the forged piece is reduced, and the precision of the combination gear is improved.

Description

technical field [0001] The invention belongs to the technical field of metal parts forging, and in particular relates to a forging process for combining teeth. Background technique [0002] The combination gear of the automobile transmission, also known as the helical transmission gear with clutch gear, is used for the transmission and shifting of the automobile transmission, so that the shifting transmission produces different kinds of differences. With the development of automobile industry technology, precision forging technology has been adopted in large quantities for coupling teeth, and its products have high precision and good performance. [0003] The existing combined gear mainly adopts the following processes: billet making→hot forging→heat treatment→cleaning, lubrication→finishing→reversing taper. In the reverse taper process of this method, due to the different deformations and different forces of each section of the small tooth, the lead-in angle of the small t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/30B21K7/12
CPCB21K1/30B21K7/12
Inventor 钱夏晨夏敏石小荣王述林周涛
Owner 江苏智造新材有限公司
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