Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears

Wang Zhenbo; Zheng Peng; Zhao Wenhui

doi:10.16578/j.issn.1004.2539.2023.04.002

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Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears

Theory·Research | 更新时间：2023-05-04

- Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears
- Journal of Mechanical Transmission Vol. 47, Issue 4, Pages: 8-16(2023)
- 作者机构：
  
  沈阳工业大学机械工程学院，辽宁沈阳 110870
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2023.04.002
  CLC：
- Published：15 April 2023，
  
  Received：15 March 2022，
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王振博,郑鹏,赵文辉.Walker曲线齿根修形对大型内齿轮热弹流脂润滑特性影响分析[J].机械传动,2023,47(04):8-16.

Wang Zhenbo,Zheng Peng,Zhao Wenhui.Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears[J].Journal of Mechanical Transmission,2023,47(04):8-16.
王振博,郑鹏,赵文辉.Walker曲线齿根修形对大型内齿轮热弹流脂润滑特性影响分析[J].机械传动,2023,47(04):8-16. DOI： 10.16578/j.issn.1004.2539.2023.04.002.

Wang Zhenbo,Zheng Peng,Zhao Wenhui.Influence of Walker Curve Tooth Root Modification on Thermoelastic Grease Lubrication Characteristics of Large Internal Gears[J].Journal of Mechanical Transmission,2023,47(04):8-16. DOI： 10.16578/j.issn.1004.2539.2023.04.002.

摘要

研究了Walker曲线修形方法对脂润滑大型内啮合圆柱直齿轮齿面润滑状态的影响。根据内啮合齿轮对的啮合规律及工程经验，选取以小齿轮基圆与节圆之间的齿廓为算例，并参数化修形后的齿廓曲线，建立了齿面油膜厚度计算模型，对修形后齿廓的润滑状态进行了数值分析。结果表明，大型齿轮修形不能完全借鉴同种类小型齿轮的修形理论经验；线性增加的修形量不能使齿面润滑状态线性变化；提高润滑脂的黏度可以有效改善由于修形曲线缺陷所造成的局部润滑不良。

Abstract

The influence of Walker curve modification method on the tooth surface lubrication state of grease lubricated large internal meshing cylindrical spur gears is studied. According to the meshing law and engineering experience of internal meshing gear pairs

the tooth profile between pinion base circle and pitch circle is determined as an example

the tooth profile curve after modification is parameterized

the calculation model of tooth surface oil film thickness is established

and the lubrication state of modified tooth profile is numerically analyzed. The results show that the modification theory and experience of the same kind of small gears cannot be fully used for reference in the modification of large gears. The linearly increased modification amount cannot make the lubrication state of the tooth surface change linearly. Increasing the viscosity of grease can effectively improve the local poor lubrication caused by the defect of the modification curve.

关键词

内啮合脂润滑齿廓修形润滑状态

Keywords

Internal meshingGrease lubricationProfile modificationLubrication status

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