混合润滑下考虑表面形貌的齿面摩擦与接触特性  

Friction and Contact Properties of Tooth Surfaces Considering Surface Topography under Mixed Lubrication

作　　者：陈守安 肖科[1,2] 程功[1,2] 韩彦峰 CHEN Shouan;XIAO Ke;CHENG Gong;HAN Yanfeng(College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400044;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044)

机构地区：[1]重庆大学机械与运载工程学院,重庆400044 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《机械工程学报》2024年第7期184-194,共11页Journal of Mechanical Engineering

基　　金：国家重点研发计划(2022YFB4702201);国家自然科学基金(52375039)资助项目。

摘　　要：齿轮传动系统在各种装备中有着广泛的应用,其性能的改善有着重要的价值。而齿轮接触界面的摩擦磨损情况与接触刚度特性对齿轮传动系统的整体性能有重要的影响。由于加工齿轮方法的不同,真实齿面具有不同的表面形貌,在考虑润滑的情况下这些齿轮的摩擦磨损和接触刚度也会不同。首先通过傅里叶变换和JOHNSON变换模拟生成不同加工方法得到的齿轮表面,然后采用三维线接触混合弹流润滑模型,求解得到膜厚与压力的分布,在此基础上计算摩擦因数并采用Archard模型计算磨损量,同时计算齿轮啮合过程中的接触刚度变化。得到三种典型加工形貌齿面的摩擦磨损与接触刚度在齿轮啮合过程中的变化情况。通过对比,确定了剃齿加工的齿面有更好的摩擦磨损特性和接触特性。在此基础上,对剃齿加工表面形貌齿面在不同速度和载荷下的摩擦学特性和接触特性进行了讨论。Gear transmission system is widely used in various equipment,and the improvement of its performance is of great significance.The friction and wear behavior and contact stiffness characteristics of gear contact interface have an important impact on the overall performance of gear transmission system.Due to different gear processing methods,the real tooth surface has different surface topography,and the corresponding friction and wear and contact stiffness will be different when considering lubrication.Firstly,the gear surface obtained by different machining methods is simulated by Fourier transform and Johnson transform,and then the three-dimensional line contact mixed elastohydrodynamic lubrication model is used to obtain the distribution of film thickness and pressure.On this basis,the friction coefficient can be obtained and the wear loss is calculated by using Archard model,and the variation of contact stiffness in the process of gear meshing is calculated.The variations of friction and wear and contact stiffness of three typical machined tooth surfaces during gear meshing are obtained.Through comparison,it is determined that the shaving tooth surface has better friction or wear characteristics and contact characteristics.On this basis,the trilogy characteristics and contact characteristics of shaving surface under different speeds and loads are discussed.

关 键 词：齿面形貌 混合润滑 摩擦磨损 接触刚度 

分 类 号：TH117[机械工程—机械设计及理论]