基于统计模型的修形齿轮点接触混合润滑分析  

Point Contact Mixed Lubrication Analysis for Modified Gear Based on the Static Model

作　　者：周长江[1] 吕运延 郑明 侯圣文 ZHOU Changjiang;LV Yunyan;ZHENG Ming;HOU Shengwen(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha Hunan 410082,China;Shaanxi Key Laboratory of Gear Transmission,Shaanxi Fast Gear Co.,Ltd.,Xi’an Shaanxi 710077,China)

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082 [2]陕西法士特齿轮有限责任公司,陕西省齿轮传动重点实验室,陕西西安710077

出　　处：《润滑与密封》2023年第8期1-10,共10页Lubrication Engineering

基　　金：直升机传动技术国家级重点实验室开放课题重点项目(HTL-O-21K01);国家自然科学基金项目(52075153)。

摘　　要：基于平均Reynolds方程和Zhao-Maietta-Chang(ZMC)弹塑性接触模型,提出鼓形修形齿轮点接触混合润滑的计算方法。采用渐进网格加密法计算润滑特性参数,对比稳态点接触混合润滑模型的仿真结果,验证提出模型的正确性。分析齿轮传动啮入点、节点和啮出点的润滑特性,研究齿轮几何参数、工况参数对鼓形修形齿面润滑特性的影响规律。结果表明:油膜压力、微凸体接触压力和总压力在啮入点处最大,啮出点处最小;名义油膜厚度在啮出点处最大,啮入点处最小;随着模数、压力角和转速的增加,油膜压力、微凸体接触压力与总压力降低,油膜厚度增加;随着功率和鼓形修形量的增大,油膜压力、微凸体接触压力和总压力增大,油膜厚度降低。因此,增大模数、压力角、转速和减小功率、鼓形修形量可改善粗糙齿面润滑状态。Point contact mixed lubrication model for crowed modified gear was established based on the average Reynolds equation and Zhao-Maietta-Chang(ZMC)elastic-plastic contact model.Lubrication characteristic parameters were calculated by progressive mesh densification method.The correctness of proposed model was verified by comparing with the simulation results of steady-state point contact mixed lubrication model.The lubrication characteristics of engaging-in,pitch and engaging-out point were investigated.Effects of gear geometrical parameters,operating parameters on crowed modified tooth surface lubrication characteristics were analyzed.The results show that film pressure,contact pressure and total pressure are the largest at engaging-in point,and the minimum at engaging-out point.Nominal film thickness is the largest at engaging-out point and the smallest at engaging-in point.With the increase of modulus,pressure angle and rotating speed,the film pressure,asperity contact pressure and total pressure decrease,and the oil film thickness increases.As the power and crowned modification increase,the oil film pressure,asperity contact pressure and total pressure increase,and the oil film thickness decreases.Therefore,the rough tooth surface lubrication state can be improved by increasing modulus,pressure angle and speed,and reducing power and crowned modification.

关 键 词：混合润滑 平均Reynolds方程 粗糙齿面 鼓形修形 

分 类 号：TH117.2[机械工程—机械设计及理论]