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Manufacturing method of high-precision hard tooth surface helical internal gear ring gear

A manufacturing method and a technology of hardened tooth surfaces, applied in the field of ring gear production, can solve problems such as high cost and inconvenient use by small manufacturers, and achieve the effects of improving product quality, improving precision, and reducing factory equipment capabilities

Inactive Publication Date: 2020-02-28
JIANGLU MACHINERY & ELECTRONICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ring gear is geared to the tooth blank by a rough gear cutting machine tool, but the cost of this type of equipment is relatively high, and it is not easy to use for small manufacturers

Method used

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  • Manufacturing method of high-precision hard tooth surface helical internal gear ring gear

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Experimental program
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Embodiment 1

[0029] A method for manufacturing a high-precision hard-toothed helical internal gear ring, comprising the following steps:

[0030] Step 1: Select low-carbon alloy steel 20Cr2Ni4A tooth blank, after forging and normalizing, use a lathe to correct the blank and remove the allowance;

[0031] Step 2: Modulate the tooth embryo;

[0032] Step 3: Through computer calculation and drawing simulation, turn the rough tooth reference (mark the position of point B and point A1) on the machine tool;

[0033] Step 4: Carry out rough cutting internal helical gear processing by wire cutting machine (position the cut-in coordinate point of the cutting line through the positions of point B and point A1);

[0034] Step 5: Perform carburizing heat treatment in four stages of 380°C, 580°C, 800°C, and 855°C on the internal helical gear after tooth opening, and then quench it through step heat treatment to control the deformation of the part No more than 0.15mm, tooth surface hardness ≥ 59HRC; ...

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Abstract

The invention discloses a manufacturing method of a high-precision hard tooth surface helical internal gear ring gear. The manufacturing method comprises the following steps of blanking, forging, normalizing, blank correction, processing without allowance, hardening and tempering, crude reference, crude tooth punching, tooth form correction, carburization, quenching, coarse grinding of an inner helical gear, accurate grinding of the inner helical gear, and trace correction grinding of the inner helical gear. Coarse tooth punching is performed through a wire cutting machine, under the conditionof no special internal helical gear tooth punching machine tool, an ordinary wire cutting machine can be used to achieve efficient, stable, and reliable tooth punching machining, at the same time, the position of a cutting line is positioned by a fixed point, accuracy of cutting is ensured, and precision of the tooth punching is improved.

Description

technical field [0001] The invention belongs to the technical field of ring gear production, in particular to a method for manufacturing a high-precision hard-tooth surface oblique internal tooth ring gear. Background technique [0002] As the speed change mechanism requires more and more light weight, and the output power of the gearbox is higher and higher, the design of the ring gear as the main part of the planetary mechanism presents the development of high precision, high hardness, ultra-thin, and helical teeth. The situation, the tooth opening and deformation control of the helical internal gear ring and the realization of high precision have become the biggest bottleneck in the production of enterprises. In the existing ring gear, the tooth base is cut by a rough tooth cutting machine tool, but the cost of this type of equipment is relatively high, and it is not convenient for small manufacturers to use. Contents of the invention [0003] The object of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 杨美花贺志军袁剑平叶作贵吴昌硕田凯黄丽琴
Owner JIANGLU MACHINERY & ELECTRONICS GROUP