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Gear machining and treating process

A technology for processing technology and gears, which is applied in the direction of metal material coating technology, coating, solid-state diffusion coating, etc., can solve problems such as waste, and achieve the goals of improving production efficiency, reducing the thickness of non-martensitic layers, and improving tissue performance Effect

Inactive Publication Date: 2015-10-28
JIANGSU YAOYAO CASTING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a gear processing technology to ensure the quality of gears, reduce the scrap rate, effectively solve the problem of waste of resources in enterprises, and improve production efficiency by adopting high-temperature variable carbon potential method

Method used

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples.

[0020] The invention relates to a gear processing technology, comprising the following steps:

[0021] 1) Blanking and blank manufacturing: use forging or casting to process and manufacture gear blanks;

[0022] 2) Gear blank processing: process splines, keyways, and threads, and choose pulling, inserting, turning, and grinding methods for processing;

[0023] 3) Rough machining and semi-finishing of the tooth shape: According to the accuracy requirements, the tooth groove is cut out from the overall blank, and the corresponding finishing allowance is left on the groove side;

[0024] 4) Tooth end chamfering and deburring: the tooth end is trimmed into a certain shape as required, and the sharp edges and burrs on both sides of the tooth are removed at the same time;

[00...

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Abstract

The invention relates to a gear machining and treating process. The gear machining and treating process includes the steps that blanking and blank manufacturing are carried out; a gear blank is machined; rough machining and semi-finish machining of a tooth form are conducted, i.e., according to a precision requirement, tooth grooves are cut in the whole blank and a corresponding allowance for finish machining is reserved on the groove side at the same; the gear end is chamfered and burrs are removed; heat treatment is carried out; tooth form machining is carried out on an unfinished product subjected to heat treatment by adopting the method of gear grinding or gear honing or gear lapping again; strengthened shot peening is carried out so as to improve the endurance bending strength and contact fatigue strength of a gear; and cleaning is carried out. Through the gear machining and treating process, the content of retained austenite on the surface of the gear and the thickness of a non-martensite layer on the surface of the gear are reduced; by the adoption of the high-temperature carbon potential changing method, production efficiency is improved; thus, the tissue performance of the tissue surface is greatly improved, and the phenomenon of tooth breakage cannot occur.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a gear processing technology. Background technique [0002] Gears are widely used in mechanical transmission and the entire mechanical field. However, the processing technology of gears in the prior art is not perfect, resulting in unsatisfactory quality of the produced gears, failing to meet the requirements for use, and high scrap rate, causing inconvenience to the enterprise. Necessary waste. The traditional carburizing process is to carry out strong infiltration at 920-930°C, carbon potential 1.2% CP, heat preservation for 7-9 hours, and then carry out diffusion temperature 920-930°C, carbon potential 0.8% CP, heat preservation for 5-7 hours, and then Cooling to the quenching temperature for quenching, the process takes a long time and the efficiency is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a gea...

Claims

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Application Information

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IPC IPC(8): B23P15/14C23C8/22
CPCB23P15/14C23C8/22
Inventor 万金虎
Owner JIANGSU YAOYAO CASTING IND
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