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Processing method of annular gear of thin-wall member

A processing technology, the technology of the inner ring gear, which is applied in the processing technology field of the inner ring gear of thin-walled parts, can solve the problems of high material consumption and product energy consumption, low material utilization rate, long production process, etc., so as to reduce steel consumption, The effect of improving utilization rate, saving steel and electric energy

Inactive Publication Date: 2010-09-29
ZHUZHOU GEAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thin-walled internal ring gear is a key part in the wheel reducer mechanism, and its usage is large. However, the internal gear is usually shaped by shaping, pushing, or pulling, which is difficult to process and low in material utilization.
In addition, the production process of the traditional process is long, the material consumption and product energy consumption are large, the cost is high, and the environmental pollution is serious during forging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Product name: ST121B inner ring gear

[0024] 1. Material selection

[0025] No. 45 thick-walled seamless steel pipe φ266X25mm;

[0026] 2. Cutting

[0027] The φ266X25mm seamless steel pipe is installed on the Z4032 sawing machine and clamped, and the length of the saw blank is 99mm;

[0028] 3. The first heat treatment

[0029] Using the normalizing process, heat the No. 45 high-quality seamless steel pipe of the above-mentioned blank to a temperature of 850-890 ° C, keep it warm for 0.5 hours, and then air-cool it to room temperature, and the normalizing hardness is 179-226 HB;

[0030] 4. Fine car

[0031] Finish turning gear blanks on a CNC lathe (CK7815) have an outer diameter of φ260.5mm, an inner hole of φ222.5mm, and a height of 92.5mm, and the rest of the dimensions are processed according to the requirements of the product drawings;

[0032] 5. Internal gear processing

[0033] The internal tooth parameters are taken as follows: the number of teeth is 5...

Embodiment 2

[0037] Product name: Benz inner ring gear

[0038] 1. Material selection

[0039] 20CrMo thick-walled seamless steel pipe φ266X25mm;

[0040] 2. Cutting

[0041] The φ266X25 seamless steel pipe is installed on the Z4032 sawing machine and clamped, and the blank is sawed to 85mm;

[0042] 3. The first heat treatment

[0043] Adopt isothermal annealing process for the 20CrMo thick-walled seamless steel pipe of the above blank, the annealing temperature is 850-870°C, cool to 660°C for 4 hours, and then cool with the furnace;

[0044] 4. Fine car

[0045] The finish turning gear blank on the CNC lathe CK7815 has an outer diameter of φ262mm, an inner hole of φ227.78mm, and a height of 81.5mm, and the rest of the dimensions are processed according to the requirements of the product drawings;

[0046] 5. Internal gear processing

[0047] The internal tooth parameters are taken as follows: the number of teeth is 56, the modulus is 4.1, and the pressure angle is 22°30′

[0048] ...

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Abstract

The invention relates to a processing method of an annular gear of a thin-wall member, comprising the following steps of: selecting a seamless steel tube as a raw material, blanking, sawing the seamless steel tube into a blank, carrying out thermal treatment, normalization process and isothermal annealing process, finely turning the blank, turning the thermal-treatment blank into the exterior geometric size of a product by using a lathe, processing internal teeth, and finally carrying out thermal treatment. The invention has the advantages of simple process, steel and electric energy saving, reduction of steel consumption and no forging, improves production environment, shortens manufacturing procedures, reduces manufacturing cost and improves the utilization rate of the materials.

Description

technical field [0001] The invention relates to a processing technology of a ring gear, in particular to a processing technology of a thin-walled inner ring gear. Background technique [0002] Now many automobile manufacturers are developing high-power trucks. Because the automobile wheel reducer mechanism has the advantages of compact structure, large torque, high bearing capacity, and good reliability, it is widely used in various trucks. The thin-walled internal ring gear is a key part in the wheel reducer mechanism, and its usage is large. However, the internal gear is usually formed by shaping, pushing, or pulling, which is difficult to process and low in material utilization. In addition, the production process of the traditional craft is long, the material consumption and product energy consumption are large, the cost is high, and the environment pollution is serious during forging. Contents of the invention [0003] The object of the present invention is to overco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04
Inventor 赵尚吾黄桂良刘洪戴育淳文贵华谢立湘刘智华
Owner ZHUZHOU GEAR CO LTD
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