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Processing technology for bore and spherical surface of sedan differential straight bevel gear

A straight-toothed bevel gear and spherical surface processing technology, which is applied in the direction of differential transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of high cost, low production efficiency, poor wear resistance, etc., and achieve good wear resistance , stable quality and low cost

Inactive Publication Date: 2007-03-21
JIANGSU PACIFIC PRECISION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high cost, low production efficiency, grinding marks on the surface, and poor wear resistance. It is easy to cause mechanical wear and increase the side clearance during use, which will cause noise when the car is running.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Embodiments of the present invention are further described below:

[0008] The spur bevel gear of the car differential with the forged tooth shape formed is used a CNC lathe to rough turn the inner hole and spherical surface, leaving a margin of 0.1 mm, and finish turning, leaving a margin of 0.01 to 0.02 mm. Then, on the modified drilling machine, the inner hole is rolled and extruded with an extrusion rod with a roller, and on the transformed lathe, a pair of rollers whose arc surface coincides with the spherical surface of the gear is used to roll and extrude the spherical surface. processing. Finally, the gear is heat treated and quenched.

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PUM

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Abstract

The invention is a processing technique of inner holes and spherical surfaces of straight conical tooth gear of the autocar differential mechanism, roughly and finely turning a gear with tooth form formed by forging, then making roll extrusion processing on the inner holes and spherical surfaces on a special device by roll extrusion tools. By this method, after the heat processing and quenching of a gear, it need not make grinding processing any more, thus high-efficiency and low-cost, and after roll extrusion, the surfaces of the inner holes and spherical surfaces have no cutting impression but has good wearability, stable quality and ability to meet use requirement of high-grade autocars.

Description

technical field [0001] The invention relates to a processing technology for the inner hole and the spherical surface of a spur bevel gear of a car differential, and belongs to the technical field of metal cutting and surface processing. Background technique [0002] The straight-toothed bevel gear of the car differential is used for the differential steering when the car is turning, which is very important for driving safety. The middle of the gear is a hole, and one end is a spherical surface. At present, the processing method of the inner hole and the spherical surface is rough turning first, leaving a margin, after heat treatment and quenching, and then grinding the inner hole and spherical surface with a grinding machine. This method has high cost, low production efficiency, grinding marks on the surface, and poor wear resistance. During use, it is easy to cause mechanical wear and increase the side clearance, resulting in noise when the car is running. Contents of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/14F16H48/06
Inventor 夏汉关周稳龙秦钧赵红军
Owner JIANGSU PACIFIC PRECISION FORGING