滤波减速器轮齿表面瞬态微观弹流润滑模型  

Transient Thermal Micro-elastohydrodynamic Lubrication Model of Filtering Reducer

作　　者：王家序[1,2] 秦德成[1] 张林川[1] 李俊阳[2] 朱双盛[1] 

机构地区：[1]四川大学制造科学与工程学院,四川成都610065 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《四川大学学报（工程科学版）》2013年第1期202-207,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(NSFC 50735008)

摘　　要：针对滤波减速器接触齿对多、齿间润滑状况复杂这一问题,建立了滤波减速器轮齿弹流润滑模型。该模型综合考虑了啮合齿对载荷分配、齿面几何间隙以及齿面加工粗糙度等因素,并采用牛顿(有限元)法实现了该润滑模型的完全数值解,得到了齿间油膜厚度、油膜压力沿啮合线的分布规律以及粗糙度对轮齿润滑特性的影响。结果表明:齿间油膜厚度和压力沿着啮合线变化,且存在着振荡和突变现象;加工粗糙度会导致齿面油膜厚度减小,润滑情况变差;正弦波状粗糙度表面的压力、膜厚值接近于真实粗糙度表面,一定程度上可以采用正弦波状粗糙度模拟齿面真实加工粗糙度。The lubrication condition between the meshing teeth of filtering reducer is complex due to muhiteeth contact. In order to solve this problem, an elastohydrodynamic lubrication （EHL） model of filtering reducer was established. The un-uniformed load distribution, detailed realistic contact geometry gap, and the machined surface roughness were all considered in the model. A complete numerical solution was achieved with the Newton-Raphson method（FEM）. The hydrodynamic pressure and film thickness of lubricant along the line of action were calculated and the effect of teeth surface roughness to the lubrication property was also obtained. The results showed that the hydrodynamic pressure and the film thickness vary with disturbance and mutation along the line of action, the film thickness decreases and the lubrication status becomes worse when the surface roughness is taken into account. Hydrodynamic pressure and film thickness exist little difference between the sine wave shape roughness surface and the realistic machined roughness surface, and sine wave shape roughness is acceptable to model the machined roughness to some extent.

关 键 词：滤波减速器 润滑 牛顿法 载荷分配 啮合线 几何间隙 

分 类 号：TH132[机械工程—机械制造及自动化]