Blank-making rolling method for synchronous sliding sleeve of automotive transmission

A technology of automobile transmission and sliding sleeve, applied in metal rolling and other directions, can solve the problems of high material consumption, large processing volume, and yet to appear, and achieve the effect of improving production efficiency, improving internal quality, and saving manpower and material resources.

Inactive Publication Date: 2010-12-15
重庆市平岗机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this forging method are: high material consumption and large amount of post-processing
For the processing of the synchronous sliding sleeve of the automobile transmission, it has not yet appeared in the traditional ring rolling processing

Method used

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  • Blank-making rolling method for synchronous sliding sleeve of automotive transmission
  • Blank-making rolling method for synchronous sliding sleeve of automotive transmission
  • Blank-making rolling method for synchronous sliding sleeve of automotive transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] Embodiment: process outer diameter phi with 20CrMnTi phi 60mm round steel 1 =185mm, inner diameter φ 2 =150mm, height h=28mm, outer diameter groove width h 1 =19mm, outer diameter groove depth h 2 =7.5mm gear synchronous sliding sleeve blank, the processing procedure is as follows:

[0052] a) Blanking, the above size is the finished size of the sliding sleeve after machining, the original forging billet generally needs to increase the machining allowance of 2.5 ~ 5mm on each processing surface, and the billet produced by the ring rolling billet process is due to rolling and expanding. The precision needs to be high, adding 1.5mm machining allowance to each machining end face can fully meet the machining requirements. Therefore, when calculating the weight of blank raw materials, the outer diameter φ 1 =188mm, inner diameter φ 2 =147mm, height h=31mm, outer diameter groove width h 1 =16mm, outer diameter groove depth h 2 = 7.5 mm. In order to make the annular gr...

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Abstract

The invention discloses a blank-making rolling method for a synchronous sliding sleeve of an automotive transmission using circular steel as a blank material. The method comprises the steps of cutting, heating, upsetting, punching a blind hole and pre-forming, punching a wad and pressing an end face, performing ring rolling forming, shaping, normalizing, performing impeller blasting and the like, wherein the key point is that a rolling wheel used in the step of the ring rolling forming is provided with an annular groove corresponding to a blank of the synchronous sliding sleeve of the automotive transmission. By applying ring rolling process to the blank of the synchronous sliding sleeve of the transmission, the subsequent machining amount is reduced to the greatest extent, the material consumption is reduced and the service life of the finished product is prolonged.

Description

technical field [0001] The invention belongs to the technical field of automobile transmissions, and in particular relates to a rolling blank method for synchronous sliding sleeves of automobile transmissions. Background technique [0002] The product quality of my country's automobile industry has developed greatly in recent years, but the forging processing technology of some blanks is still relatively backward, such as the production of synchronous sliding sleeve blanks for various gears in automobile transmissions. The traditional forging method is difficult to meet the higher requirements of the blank size, but because there is no major breakthrough in forging technology innovation, the traditional method is still used for forging. After blanking, heating, piercing, punching, and punching, a circular blank is made. There is a large size margin between the forged blank and the finished part, and then the outer circle is processed by machining. Circumferential grooves on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21H1/06
Inventor 莫亚夫
Owner 重庆市平岗机械有限公司
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