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Machining process of normally-engaged gear

A processing technology and constant meshing technology, which is applied in the field of constant meshing gear processing technology, can solve the problems of no obvious improvement in gear grinding accuracy, reduced wear resistance of end faces, and increased costs.

Inactive Publication Date: 2020-07-07
泸州高新中航传动转向系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the existing technical schemes that the wear resistance of the end face is reduced, the precision of the gear grinding is not significantly improved, and the cost is increased due to the finishing process, the present invention provides a constant mesh gear processing technology

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  • Machining process of normally-engaged gear
  • Machining process of normally-engaged gear
  • Machining process of normally-engaged gear

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Embodiment Construction

[0020] The implementation of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement it after studying this specification. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The invention provides a constant mesh gear processing technology, including the following steps:

[0022] Process 1, embryo making, using hot die forging to forge the tooth embryo of the gear;

[0023] Process 2, pulling the spline, broaching the inner spline hole on the tooth blank, and controlling the runout tolerance of the end face of the gear;

[0024] Process 3, gear hobbing, the gear teeth are processed by the hob;

[0025] Process 4, chamfering, the sharp corner on the tooth profile of the inverted cogwheel tooth;

[0026] Step 5, heat treatment, put the gear into the...

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Abstract

The invention provides a machining process of a normally-engaged gear, and relates to the technical field of gear machining. According to the technical scheme, the procedure for re-machining the circle run-out tolerance of the end faces of the gear and the length between the two end faces is not set between the procedure 5 and the procedure 7; and allowances for expanding caused by heating are reserved for the length between the two end faces of a gear blank manufactured in the procedure 1 and the circle run-out tolerance of the end faces of the gear treated in the procedure 2, the length between the two end faces of the gear blank obtained after the procedure 5 meets the product qualification standard, and the circle run-out tolerance of the end faces of the gear meets the requirements ofthe procedure 7. Effective hardened layers on the end faces of the gear are not lost, and the normal service life of the gear cannot be affected; and finish turning machining equipment and operatorsare reduced, and therefore the machining cost is reduced.

Description

technical field [0001] The invention relates to the technical field of gear processing, in particular to a constant mesh gear processing technology. Background technique [0002] In the processing technology of constant mesh gears, the following steps are generally included: step 1, embryo making; step 2, spline drawing; step 3, gear hobbing; step 4, chamfering; step 5, heat treatment; step 6, cleaning shot blasting ; Step 7, finish turning; Step 8, gear grinding; Step 9, cleaning. The embryo making step manufactures the tooth blank of the gear according to the designed size. After the spline is drawn, the circular runout tolerance of the gear end face is about 0.02mm. After the gear undergoes the heat treatment step, the gear expands due to heat, and the length between the two ends and The circular runout tolerance has been increased. In order to meet the size standard of qualified products and the circular runout tolerance of the positioning end face required by the gear ...

Claims

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Application Information

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IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 犹小龙母军
Owner 泸州高新中航传动转向系统有限公司
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