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Machining process of gear

A processing technology and gear technology, which is applied in the field of gear processing technology, can solve the problems of transmission system safety hazards, low gear processing accuracy, and insufficient structural strength, etc., and achieve the effects of high structural strength, low cost, and improved casting accuracy

Inactive Publication Date: 2019-07-30
XUZHOU XIANGQIAO MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Gear is one of the important parts in the transmission system, which mainly plays the role of transmitting power and torque; in the prior art, the gear will fail after a long time of use, such as pitting, cracks and fractures. Once the gear fails, it will be damaged The impact caused by the transmission system is self-evident, causing safety hazards to the entire transmission system, and the existing gears have defects such as low machining accuracy, high cost, and insufficient structural strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention proposes a gear processing technology, which includes the following steps: S10: coating a layer of release agent on the inner cavity of the gear die-casting mold; S20: preheating the inner gear die-casting mold, the heating temperature is 400 ° C, and the heat preservation is 0.5 h; S30: heat the molten steel from the steel ingot to a molten state, and keep it warm at a temperature of 1300°C for 40 minutes; S40: continue heating the die-casting mold in step S10 so that its temperature reaches 1200°C, and Keep warm for 30 minutes, and pour the molten steel in S30 into the die-casting mold; S50: pressurize the die-casting mold at constant temperature from the pouring port immediately after the pouring is completed, and the pressure is 0.01MPa, and the pressurization time is kept for 40 minutes; S60 : cooling the die-casting mold to room temperature, and demoulding the gear; S70: grinding and polishing the gear in step S60 to form a finished gear.

Embodiment 2

[0021] The invention proposes a gear processing technology, which includes the following steps: S10: coating a layer of release agent on the inner cavity of the gear die-casting mold; S20: preheating the inner gear die-casting mold, the heating temperature is 600 ° C, and the heat preservation temperature is 0.8 h; S30: heat the molten steel from the steel ingot raw material to a molten state, and keep it warm at a temperature of 1500°C for 60 minutes; S40: continue heating the die-casting mold in step S10 so that its temperature reaches 1400°C, and Keep warm for 50 minutes, and pour the molten steel in S30 into the die-casting mold; S50: pressurize the die-casting mold at constant temperature from the pouring port immediately after the pouring is completed, and the pressure is 0.015MPa, and the pressurization time is maintained for 50 minutes; S60 : cooling the die-casting mold to room temperature, and demoulding the gear; S70: grinding and polishing the gear in step S60 to fo...

Embodiment 3

[0023] The invention proposes a gear processing technology, which includes the following steps: S10: coating a layer of release agent on the inner cavity of the gear die-casting mold; S20: preheating the inner gear die-casting mold, the heating temperature is 500 ° C, and the heat preservation is 0.7 h; S30: heat the molten steel ingot raw material to a molten state, and keep it warm, the keep temperature is 1400°C, and keep hold time is 50min; S40: continue to heat the die-casting mold in step S10 to make the temperature reach 1300°C, and Keep warm for 40 minutes, and pour the molten steel in S30 into the die-casting mold; S50: pressurize the die-casting mold at constant temperature from the pouring port immediately after the pouring is completed, and the pressure is 0.013MPa, and the pressurization time is kept for 45min; S60 : cooling the die-casting mold to room temperature, and demoulding the gear; S70: grinding and polishing the gear in step S60 to form a finished gear. ...

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Abstract

The invention discloses a machining process of a gear. The process comprises following steps that a demolding agent is coated on an inner cavity of a gear pressure casting mold; an inner gear pressurecasting mold body is preheated; a steel ingot raw material is heated to molten steel in the molten condition, heat preservation is carried out, the heat preservation temperature ranges from 1300 to 1500 DEG C, and the heat preservation time ranges from 40 to 60 min; the pressure casting mold in the S10 is continuously heated, the temperature ranges from 1200 to 1400 DEG C, molten steel in S30 ispoured into the pressure casting mold, after pouring, the pressure casting mold at the constant temperature is pressurized from a sprue gate, the pressure ranges from 0.01 to 0.015 MPa, the pressurizing time is kept 40 to 50 min, the pressure casting mold is cooled to the room temperature, a gear is subjected to demolding treatment, and the gear is ground and polished to form a gear finished product. The machining process improves the casting precision, is low in cost, and high in structural strength and improves the production efficiency.

Description

technical field [0001] The invention relates to the field of casting, in particular to a gear processing technology. Background technique [0002] Gear is one of the important parts in the transmission system, which mainly plays the role of transmitting power and torque; in the prior art, the gear will fail after a long time of use, such as pitting, cracks and fractures. Once the gear fails, it will be damaged The impact caused by the transmission system is self-evident, causing potential safety hazards to the entire transmission system, and the existing gears have the defects of low machining accuracy, high cost, and insufficient structural strength. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a gear processing technology, which improves casting precision, has low cost, high structural strength, and improves production efficiency. [0004] In order to achieve the above object, the present inve...

Claims

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Application Information

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IPC IPC(8): B22D17/00B22D25/02
CPCB22D17/00B22D25/02
Inventor 孙文法高峰孙磊
Owner XUZHOU XIANGQIAO MACHINERY CO LTD
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