齿面凹坑参数对面齿轮等温弹流润滑的影响  

Influence of Tooth Surface Pits of Face-gears on Isothermal Elastohydrodynamic Lubrication

作　　者：何国旗[1] 孙能 何瑛[2] 严宏志[3] 邓澍杰 王其雷[1] 

机构地区：[1]湖南工业大学机械工程学院,湖南株洲412007 [2]湖南理工职业技术学院资源工程系,湖南湘潭411104 [3]中南大学机电工程学院,高性能复杂制造国家重点实验室,湖南长沙410083

出　　处：《润滑与密封》2017年第2期67-72,76,共7页Lubrication Engineering

基　　金：国家自然科学基金项目(51375159;51575533);湖南省自然科学基金(株洲联合)项目(2015JJ5020);湖南省科技厅重点研发计划项目(2015JC3096);湖南省高等学校科学研究项目(12A038;13C379)

摘　　要：根据微分几何基本理论求出面齿轮曲率半径,由齿面相对运动求得面齿轮传动过程中卷吸速度,建立面齿轮等温弹流润滑模型,通过FORTRAN语言编程计算出齿面油膜厚度,分析凹坑直径和深度对油膜膜厚的影响,并通过实验验证理论计算的准确性。研究结果表明:齿轮从啮入到啮出过程中,油膜厚度沿啮合轨迹逐渐增大;当齿面凹坑直径在50~200μm时有增加油膜厚度的作用,其中凹坑直径为100μm时效果最优;当齿面凹坑深度在5~20μm时均有增加油膜厚度的效果,存在最优深度为10μm。The curvature radius of gear was calculated according to the basic theory of differential geometry,and the entrainment velocity was calculated during face-gear meshing process by the relative movement of the tooth surface. The isothermal elastohydrodynamic lubrication model of the face-gear was established. The oil film thickness of the tooth surface was calculated through the FORTRAN language programming,and the influence of the pit diameter and depth on the film thickness was analyzed. The accuracy of theoretical calculation was verified by experiments. The results show that from the beginning of the face-gear meshing process to disengagement,the film thickness is increased gradually along the meshing track. When the pit diameter of the tooth surface is from 50 μm to 200 μm,the oil film thickness is increased,and the optimum pit diameter is 100 μm. When the pit depth of the tooth surface is from 5 μm to 20 μm,the oil film thickness is increased,and the optimum depth is 10 μm.

关 键 词：面齿轮 凹坑形貌 润滑 油膜厚度 

分 类 号：TH117.2[机械工程—机械设计及理论]