Machining method of gear ring of main bearing of heading machine and obtained gear ring

A processing method and main bearing technology, which is applied in the field of bearing processing, can solve the problems of uncontrollable gear tooth shrinkage and insufficient tooth normal line reserve, so as to avoid insufficient reserve, improve yield rate, and improve processing efficiency.

Pending Publication Date: 2022-07-15
CHINA RAILWAY CONSTR HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the cold and heat effect in the quenching process, the gear teeth will shrink and the shrinkage cannot be controlled, resulting in insufficient retention of the normal line of the tooth after quenching. Therefore, the ring gear produced by the existing technology often has quality problems. How to solve it The shrinkage problem during quenching becomes a key factor to improve the quality of the ring gear

Method used

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  • Machining method of gear ring of main bearing of heading machine and obtained gear ring
  • Machining method of gear ring of main bearing of heading machine and obtained gear ring
  • Machining method of gear ring of main bearing of heading machine and obtained gear ring

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Embodiment 1

[0031] see figure 1 , a processing method of a main bearing ring gear of a roadheader, comprising the following steps:

[0032] S1: Clean the clamping surface of the milling tool, and clamp the ring gear (see Figure 1-3 ), including leveling the end face of the ring gear so that its runout amount is ≤0.02mm, and aligning the inner diameter of the ring gear so that its runout amount is ≤0.05mm, and the teeth in the ring gear are subjected to rough milling and semi-fine milling in turn. In the process of rough milling and semi-finish milling, the cutter head speed is 160m / min, the tooth feed is 400mm / min, and the tooth common normal line is 5mm and 3mm respectively;

[0033] S2: Take out the ring gear, and temper the ring gear as a whole (tempering temperature is 160-180°C, and tempering time is 4h±10min; in this example, the tempering temperature is 170°C, and the tempering time is 4h); clamping teeth It includes leveling the end face of the ring gear to make the runout ≤0.0...

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Abstract

The invention provides a machining method for a gear ring of a main bearing of a heading machine. The machining method comprises the following steps that S1, rough gear milling and semi-finish gear milling are sequentially conducted on teeth in the gear ring; s2, overall tempering is conducted on the gear ring; then, the maximum pitch circle run-out position serves as a tool setting point to carry out fine tooth milling on the teeth; s3, teeth in the gear ring are divided into N groups, and the teeth in each group are spaced by at least one tooth; quenching the N groups of teeth in sequence; and S4, the maximum pitch circle run-out position serves as a tool setting point to conduct hard gear milling on the teeth, and the main bearing gear ring of the heading machine is obtained. The gear ring obtained through the machining method has the advantages of being few in crack and high in yield.

Description

technical field [0001] The invention relates to the technical field of bearing processing, in particular to a processing method of a main bearing ring gear of a roadheader and the obtained ring gear. Background technique [0002] As the key power transmission part of the main bearing of the roadheader, the ring gear determines the service life and performance parameters of the bearing. In the main drive of the roadheader, the reducer needs to transmit the power of the electric motor or hydraulic motor to the pinion, and the pinion meshes with the bearing ring gear to make the cutter head and the bearing ring gear rotate together; the gear teeth of the main bearing ring gear of the roadheader Machining is often carried out on the outline of the ring gear, and then rough milling of the ring gear, then quenching the gear teeth to improve the impact resistance and wear resistance of the gear teeth, and finally hard milling the quenched teeth. . However, due to the cold and hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14F16H55/06F16H55/17
CPCB23P15/14F16H55/06F16H55/17F16H2055/176
Inventor 刘兴宝麻成标解金东许正根刘华
Owner CHINA RAILWAY CONSTR HEAVY IND
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