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Die forging process and equipment for outer star wheel and inner star wheel blanks for automobile transmission shaft

A technology of outer star wheel and inner star wheel, which is applied in metal processing equipment, wheels, vehicle parts, etc., can solve the problems of low material utilization rate, low production efficiency, and low material utilization rate, so as to reduce energy consumption, The effect of improving labor efficiency and reducing the quality of forgings

Active Publication Date: 2019-12-10
SHANGHAI JD CHUKYO FORGING & STAMPING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The manufacturing method of the transmission requires forging the inner and outer star wheel blanks separately, and continuous skins are produced during punching, resulting in low production efficiency, low material utilization, and a relatively large workload in the production process; while automobiles There are many punching holes in the outer star wheel and inner star wheel products for the transmission shaft, the material consumption of punching and skinning is more, the utilization rate of materials is low, and the follow-up processing cost is high

Method used

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  • Die forging process and equipment for outer star wheel and inner star wheel blanks for automobile transmission shaft
  • Die forging process and equipment for outer star wheel and inner star wheel blanks for automobile transmission shaft
  • Die forging process and equipment for outer star wheel and inner star wheel blanks for automobile transmission shaft

Examples

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Effect test

Embodiment 1

[0035] see Figure 4-9 , a kind of die forging process of outer star wheel and inner star wheel blank for automobile transmission shaft, comprising the following steps: S1, pre-forging: the shape between the upper mold core and the lower mold core of the pre-forging mold is the outer star wheel blank A structure that is integrated with the inner star wheel blank, wherein the bottom of the outer star wheel blank is integrated with the upper part of the inner star wheel blank; S2, final forging: further forging and forming the pre-forged blank; S3, Stamping division: The inner star wheel blank and the outer star wheel blank of the final forged blank are divided by stamping.

[0036] see Figure 5-6 , during final forging: the height of the connecting part of the inner and outer star wheel blanks is A, the distance from the connecting part of the inner and outer star wheel to the upper end of the inner star wheel is B, the width of the connecting part of the inner and outer star...

Embodiment 2

[0039] A kind of above-mentioned equipment for die forging process of outer star wheel and inner star wheel blank for automobile transmission shaft, including pre-forging equipment, final forging equipment, stamping and cutting equipment; The shape of the space between them is a pre-forging structure in which the outer star wheel blank and the inner star wheel blank are connected as a whole, wherein the bottom of the outer star wheel blank is connected with the upper part of the inner star wheel blank; the upper part of the final forging equipment The shape of the space between the mold core and the lower mold core is a final forging structure in which the outer star wheel blank and the inner star wheel blank are connected together; Hole trimming punch 13, stripping plate 8; the stripping plate 8 is connected with the upper die base 10 through an elastic mechanism, and corresponds to the upper part of the outer star wheel blank part of the blank to be forged; the sleeve forging...

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Abstract

The invention relates to a die forging process of besides-star wheel and star wheel blanks for an automobile drive shaft. The die forging process is characterized by comprising the following steps: S1. pre-forging: the shape between an upper die core and a lower die core of a pre-forging die is of a structure of connecting a besides-star wheel blank with a star wheel blank into a whole, wherein the bottom of the besides-star wheel blank and the upper part of the star-wheel blank are connected into a whole; S2. final forging: the pre-forged blank is forged and formed; and S3. stamping cutting: the star wheel blank and the besides-star wheel blank of the final forged blank are cut by a stamping method. The forging process is scientifically made by comprehensively analyzing the shape, size and technical requirements of the same metal workpiece so as to achieve the purpose of saving labor and saving materials.

Description

technical field [0001] The invention relates to a die forging process and equipment, in particular to a die forging process and equipment for an outer star wheel and an inner star wheel blank of an automobile transmission shaft, and belongs to the technical field of die forging process for parts of an automobile drive shaft. Background technique [0002] The inner and outer star wheels of the automobile transmission shaft are assembled together, and the transmission in the direction of rotation is realized through balls. The inner and outer star wheels of the automobile transmission shaft are important parts of the automobile transmission shaft. [0003] During the manufacturing process of the existing inner and outer star wheels, the blanks are respectively forged by means of die forging, and then the blanks are machined. [0004] The manufacturing method of the transmission requires forging the inner and outer star wheel blanks separately, and continuous skins are produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/28B21J5/02B21J13/02B21D37/10B21D28/14B21D28/34
CPCB21D28/14B21D28/34B21D37/10B21J5/02B21J13/02B21K1/28
Inventor 孙礼宾徐杨沈江徐杰汪磊
Owner SHANGHAI JD CHUKYO FORGING & STAMPING
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