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Method for manufacturing automotive bevel gear shaft

A manufacturing method and technology of bevel gears, which are applied in the field of shaft parts manufacturing, can solve the problems of few processes and poor quality of bevel gear shafts, and achieve the effects of improving internal quality, avoiding trauma and internal stress, and saving production costs.

Inactive Publication Date: 2014-04-09
JIANGSU AIRSHIP GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly aims at the problem of poor quality of bevel gear shafts processed in the prior art, and proposes a manufacturing method for bevel gear shafts for vehicles, which has fewer procedures, no internal stress, easy realization of accurate positioning, and convenient machining

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  • Method for manufacturing automotive bevel gear shaft

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with embodiment.

[0022] This embodiment is the bevel gear shaft in the automobile differential of the drive axle of a bus, wherein the main parameters of the bevel gear are: the number of teeth Z=9, the modulus of the big end face m s =12, Addendum circle diameter D e =137mm, bevel gear shaft length L=294mm, journal diameter d=65mm. Because the size of the bevel gear shaft in the vehicle drive axle is relatively small, the manufacturing method of the bevel gear shaft of different specifications is exactly the same, and it is carried out in the following order:

[0023] a. Forging blank

[0024] The workpiece blank is manufactured by die forging method;

[0025] b. Turning gear billet

[0026] First process the center holes at both ends of the workpiece, position the workpiece with the center holes, and then turn the tooth blank according to the designed size;

[0027] c. Gear cutting

[0028] T...

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Abstract

The invention discloses a method for manufacturing an automotive bevel gear shaft. The method is performed according to the following sequence: firstly, manufacturing a workpiece blank by means of die forging, machining central holes in the both ends of the workpiece, positioning the workpiece by virtue of the central holes, then turning a tooth blank section according to design dimensions; secondly, still positioning by virtue of the central holes of the workpiece, implementing tooth forming by means of cutting, and performing conventional heat treatment on the workpiece which finishes tooth-cutting machining; finally, positioning and installing a tooth die in a clamp and the bevel gear of the workpiece, and then performing finish turning until each shaft neck on the shaft section of a cantilever beam shaft to achieve design dimensions. The method disclosed by the invention is short in process route, high in production efficiency, capable of avoiding external damages and internal stress generated on the surface of the workpiece, and beneficial to improve the inherent quality of the workpiece. Most of all, each shaft neck on the shaft section of the workpiece is positioned by teeth and subjected to finish turning, and due to the positioning structure, the superposition of a machining positioning reference and an installation reference is realized, thus greatly improving the coaxial accuracy of the teeth and the shaft necks, and contributing to improve the transmission quality of the workpiece after being installed.

Description

technical field [0001] The invention relates to a method for manufacturing a shaft, in particular, the invention relates to a method for manufacturing a bevel gear shaft for a vehicle. Background technique [0002] The bevel gear shaft is the main transmission part in drive axles of automobiles, tractors and construction machinery. Its structural feature is that one end of the shaft is equipped with an integrated bevel gear, and the coaxial index of the shaft section and the bevel gear directly affects the transmission quality. Due to the special structure of the bevel gear shaft, the bevel gear and the journal section must be machined separately. Therefore, the process route of the prior art is relatively long and there are many processes. The specific process route is: forging blank→turning gear billet→gear cutting process→overall heat treatment→straightening→flaw detection→finishing journal. The gear cutting process in the above process usually takes the preset center ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 金九如黄廷波龚仁春
Owner JIANGSU AIRSHIP GEAR
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