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Machining method of cylindrical gear with high impact resistance

A cylindrical gear, impact resistance technology, applied in the field of gears, can solve the problems of poor wear resistance of alloy steel, low yield of cylindrical gears, weak impact resistance, etc., to improve wear resistance, good toughness, stress relief. Effect

Inactive Publication Date: 2020-08-25
全椒县众联机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a cylindrical gear processing method with strong impact resistance to solve the problem that the cylindrical gear blank forging proposed in the above background technology is cooled after heating without tempering, resulting in reduced toughness, and the selected alloy steel is wear-resistant The ability is poor, the impact resistance is weak, and the gear teeth cannot be broken due to the inability to withstand the impact load. The forgings of the cylindrical gear are not tested before normalizing, resulting in the problem of low yield of the cylindrical gear

Method used

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  • Machining method of cylindrical gear with high impact resistance
  • Machining method of cylindrical gear with high impact resistance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of cylindrical gear machining method with strong impact resistance proposed by the present invention comprises the following steps,

[0032] S1, raw material pretreatment: remove the cylindrical gear raw material of corresponding shape and better quality from the whole batch of materials according to the desired shape of the cylindrical gear;

[0033] S2, raw material forging: the cylindrical gear raw material is changed into a cylindrical gear blank forging through a forging machine, and an ultrasonic detector is used to detect the cylindrical gear blank forging. The ultrasonic detector detects whether the cylindrical gear blank forging has cracks, and the cylindrical gear blank without cracks Forgings are picked out and used;

[0034] S3, normalizing treatment: Put the cylindrical gear blank forging into the heating furnace for heating. After holding for a period of time, the temperature in the heating furnace is 840 degrees Celsius. Take out the forging from t...

Embodiment 2

[0041] A kind of cylindrical gear machining method with strong impact resistance proposed by the present invention comprises the following steps,

[0042] S1, raw material pretreatment: remove the cylindrical gear raw material of corresponding shape and better quality from the whole batch of materials according to the desired shape of the cylindrical gear;

[0043] S2, raw material forging: the cylindrical gear raw material is changed into a cylindrical gear blank forging through a forging machine, and an ultrasonic detector is used to detect the cylindrical gear blank forging. The ultrasonic detector detects whether the cylindrical gear blank forging has cracks, and the cylindrical gear blank without cracks Forgings are picked out and used;

[0044] S3, normalizing treatment: Put the cylindrical gear blank forging into the heating furnace for heating. After holding for a period of time, the temperature in the heating furnace is 870 degrees Celsius. Take out the forging from t...

Embodiment 3

[0051] A kind of cylindrical gear machining method with strong impact resistance proposed by the present invention comprises the following steps,

[0052] S1, raw material pretreatment: remove the cylindrical gear raw material of corresponding shape and better quality from the whole batch of materials according to the desired shape of the cylindrical gear;

[0053] S2, raw material forging: the cylindrical gear raw material is changed into a cylindrical gear blank forging through a forging machine, and an ultrasonic detector is used to detect the cylindrical gear blank forging. The ultrasonic detector detects whether the cylindrical gear blank forging has cracks, and the cylindrical gear blank without cracks Forgings are picked out and used;

[0054] S3, normalizing treatment: Put the cylindrical gear blank forging into the heating furnace for heating. After holding for a period of time, the temperature in the heating furnace is 900 degrees Celsius. Take out the forging from t...

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Abstract

The invention relates to the field of gears, in particular to a machining method of a cylindrical gear with high impact resistance. The machining method comprises the following steps of S1, raw material pretreatment, S2, raw material forging and S3, normalizing treatment, wherein in step S1, cylindrical gear raw materials with corresponding shapes and better quality are taken from a whole batch ofmaterials according to the shapes required by the cylindrical gear; in step S2, the cylindrical gear raw materials are transformed into a cylindrical gear blank forged piece by a forging machine, andis detected by an ultrasonic detector; and in step S3, the cylindrical gear blank forged piece is placed into a heating furnace for heating, the temperature is kept for a period of time, and the forged piece is taken from the heating furnace for cooling. According to the invention, the cylindrical gear blank forged piece is tempered after being heated and cooled, so that the stress generated during normalizing and cooling can be eliminated, and the toughness and plasticity of the cylindrical gear blank forged piece are improved; 20CrMnTi low-carbon alloy steel is adopted and subjected to carburizing and quenching treatment, so that the cylindrical gear has good toughness, can bear impact load without breaking gear teeth, and has higher strength and good machinability.

Description

technical field [0001] The invention relates to the field of gears, in particular to a cylindrical gear processing method with strong impact resistance. Background technique [0002] Gear is an important part used to transmit motion and power. It is used in most machines at present. Commonly used gears include cylindrical gears, bevel gears and worm gears. Cylindrical gears are the most widely used. Cylindrical gears are an important part of mechanical gears. According to the direction of the teeth, cylindrical gears can be divided into spur gears, helical cylindrical gears and herringbone cylindrical gears. [0003] In the process of cylindrical gear processing, the cylindrical gear blank forging is cooled after heating without tempering, resulting in a decrease in toughness. The selected alloy steel has poor wear resistance and impact resistance. The forgings of gears are not tested before normalizing, resulting in a low yield of cylindrical gears. Therefore, it is urgent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 宇伟
Owner 全椒县众联机械有限公司