混合弹流润滑下等相对曲率齿轮黏着磨损分析  

Analysis of adhesive wear of gears with constant relative curvature under mixed elastohydrodynamic lubrication

作　　者：孔荣 刘雷[1] 陈峙玮 KONG Rong;LIU Lei;CHEN Zhiwei(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《机械传动》2025年第1期105-113,共9页Journal of Mechanical Transmission

基　　金：国家自然科学基金面上项目(52075238)。

摘　　要：【目的】当等相对曲率(Constant Relative Curvature,CRC)齿轮传动处于混合弹流润滑状态时,磨损系数不是常数,传统的Achard黏着磨损模型已不适用,有必要对混合弹流润滑下的CRC齿轮进行黏着磨损分析。【方法】在混合弹流润滑状态下,建立考虑时变摩擦力的齿轮动力学模型与修正的Achard黏着磨损模型,对等相对曲率齿轮进行了齿面磨损深度计算;与试验数据进行对比,验证了时变摩擦因数模型的适用性;通过算例,探讨了模数、输入转矩、转速等参数对磨损的影响。【结果】结果表明,主、从动轮齿根部位的磨损深度要大于齿顶部位,节点处磨损深度最小,最大磨损深度出现在齿根部位或单对齿啮合区界点位置;增大模数、齿宽、输入转速与减小输入转矩均能有效减小磨损;在一定条件下增大传动比或减小等相对曲率值能够减小磨损。[Objective]When the gear with constant relative curvature(CRC)transmission is in a mixed elastohydrodynamic lubrication state,the wear coefficient is not constant,and the traditional Achard adhesive wear model is no longer applicable.It is necessary to conduct adhesive wear analysis on CRC gears under mixed elastohydrodynamic lubrication.[Methods]Under mixed elastohydrodynamic lubrication,a dynamics model considering time-varying friction and a modified Achard adhesive wear model were established to calculate the adhesive wear depth of gears with constant relative curvature.The time-varying friction coefficient model was verified by comparing results with the experimental data.Through numerical examples,the effects of parameters such as modulus,input torque,and rotational speed on wear were discussed.[Results]The results show that the wear depth at the root of the driving and driven gears should be greater than that at the top of the teeth,and the wear depth at the pitch point was the smallest.The maximum wear depth occurs at the root of the tooth or at the boundary point of the meshing area of a single pair of teeth.Increasing the modulus,tooth width,input speed,and reducing input torque can effectively reduce wear depth.Increasing the transmission ratio or decreasing the relative curvature value under specific conditions can reduce wear depth.

关 键 词：等相对曲率(CRC)齿轮 混合弹流润滑 黏着磨损 时变摩擦因数 

分 类 号：TH132.4[机械工程—机械制造及自动化]