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Technology for improving tooth profile machining precision of internal teeth of carburized and quenched gear

A carburizing and quenching, gear technology, applied in the direction of components with teeth, belt/chain/gear, gear teeth, etc., can solve the problem of difficult to process the internal teeth of the gear, can not meet the accuracy, and the grinding machine has limited ability to grind the internal teeth. and other problems, to achieve the effect of eliminating workpiece deformation, expanding processing technology, and changing gear processing mode.

Inactive Publication Date: 2013-10-02
CITIC HEAVY INDUSTRIES CO LTD
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  • 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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  • Technology for improving tooth profile machining precision of internal teeth of carburized and quenched gear
  • Technology for improving tooth profile machining precision of internal teeth of carburized and quenched gear

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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, specifically a technology that can improve the processing accuracy of the internal tooth profile of carburized and quenched gears. Background technique [0002] Gear transmission is widely used. With the development of science and technology and the adjustment of industrial structure, industrial enterprises are developing towards environmentally friendly, resource-saving, energy-saving and efficiency-increasing, large and super-large-scale. Gear transmission is widely used in various industries. With the development of ultra-large module, hard tooth surface, and high precision, high-hardness and high-precision gear transmissions are currently widely used. For example, the new product MZL series gearboxes with good market conditions are used in industries such as building materials, power generation, and mining. Every year There are more than 100 units in demand. Its structure is a one...

Claims

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Application Information

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IPC IPC(8): B23F5/12B23F19/00
Inventor 刘成亢志强孙岩
Owner CITIC HEAVY INDUSTRIES CO LTD
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