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A technology capable of improving the machining accuracy of carburizing and quenching gear internal tooth profile

A technology of carburizing and quenching, gears, applied to components with teeth, belts/chains/gears, gear teeth, etc., which can solve the problem of unsatisfactory precision, limited ability of gear grinding machines to grind internal teeth, and difficulty in processing internal gear teeth To achieve the effect of expanding the processing technology, changing the gear processing mode, and eliminating the deformation of the workpiece

Inactive Publication Date: 2015-09-09
CITIC HEAVY INDUSTRIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing method of internal tooth profile of hardened tooth surface is usually gear shaping, followed by grinding, such as rough gear shaping before carburizing and quenching and grinding tooth profile after carburizing and quenching. Due to the limited ability of the gear grinding machine to grind internal teeth, Difficult to process internal gear teeth
However, the high hardness and high precision of the internal teeth of the gear have far exceeded the processing capacity of the conventional gear shaping process, and cannot meet its performance requirements such as precision.

Method used

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  • A technology capable of improving the machining accuracy of carburizing and quenching gear internal tooth profile
  • A technology capable of improving the machining accuracy of carburizing and quenching gear internal tooth profile

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specific Embodiment approach

[0026] The specific embodiment of the present invention is described below in conjunction with accompanying drawing: A kind of technology that can improve the machining accuracy of carburizing and quenching gear internal tooth profile, comprises the following steps:

[0027] Step 1. Take the tooth blank to be processed for internal teeth and carry out preprocessing. The preprocessing process is as follows:

[0028] (1) Put the gear shaping tool on the working table of the gear shaping machine tool, adjust the runout of the end face of the gear shaping tool so that the error is not greater than 0.03mm, and then fix the gear shaping tool on the working table of the gear shaping machine tool; Put the reference end surface of the tooth blank close to the end surface of the gear shaping mold, the error is not greater than 0.03mm, adjust the runout of the top circle of the inner tooth, so that the error is not greater than 0.03mm, and then press and fix it on the gear shaping mold; ...

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Abstract

The invention relates to a machining technology of forms of gear teeth, namely a technology for improving tooth profile machining precision of internal teeth of a carburized and quenched gear. The technology comprises pre-machining, heat treatment and finish machining. According to the technology, a gear shaping cutter is polished properly during pre-machining, common normal line allowance for finish of the internal tooth profile is reserved, further finish machining is carried out on the gear after heat treatment, and therefore the machining precision of the gear is effectively improved, and overall mechanical property of the gear is improved.

Description

technical field [0001] The invention relates to a gear tooth profile processing technology, in particular to a process capable of improving the machining accuracy of carburizing and quenching gear internal tooth profile. Background technique [0002] The application of gear transmission is very extensive. With the development of science and technology and the adjustment of industrial structure, industrial enterprises are developing towards the environment-beautiful, resource-saving, energy-saving and efficient, and large-scale and super-large. The widespread use of gear transmission in various industries is also becoming larger With super large modulus, hard tooth surface, and high-precision development, the application of high-hardness and high-precision gear transmission is relatively common at present. For example, the new product MZL series gearbox with good market conditions is used in building materials, power generation, mining and other industries. Need more than 100...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/14B23F5/12B23F19/00
Inventor 刘成亢志强孙岩
Owner CITIC HEAVY INDUSTRIES CO LTD
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