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  

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

作　　者：王振博 郑鹏[1] 赵文辉[1] Wang Zhenbo;Zheng Peng;Zhao Wenhui(College of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870

出　　处：《机械传动》2023年第4期8-16,22,共10页Journal of Mechanical Transmission

基　　金：中国科学院战略性先导科技专项(XDC04030503)。

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。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 

分 类 号：TU621[建筑科学—建筑技术科学]