基于全齿廓的行星齿轮点蚀故障时变啮合刚度计算模型  

Calculation Model of Time-varying Meshing Stiffness of Planet Gear Pitting Fault based on Full Tooth Profile

作　　者：蒋超阳 王衍学 赖俊杰 Jiang Chaoyang;Wang Yanxue;Lai Junjie(School of Mechatronic Engineering,Guilin University of Electronic Technology,Guilin 541000,China;School of Mechanical-electrical and Vehicle Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541000 [2]北京建筑大学机电与车辆学院,北京100044

出　　处：《机械传动》2021年第6期51-57,152,共8页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51875032);桂林电子科技大学研究生教育创新计划项目(2020YCXS014)。

摘　　要：当齿轮产生点蚀故障时,其时变啮合刚度变化导致的振动响应特征是实现点蚀故障诊断的重要依据,而准确的齿轮几何模型对于齿轮时变啮合刚度的计算精度具有重大意义。推导了内、外啮合齿轮的齿廓方程,提出了基于全齿廓的行星齿轮点蚀故障时变啮合刚度计算模型,有效解决了简化模型中需要齿数判断和精度较差的问题,提高了行星齿轮时变啮合刚度计算精度,为行星齿轮点蚀故障的动力学建模、故障机理分析及疲劳寿命分析奠定了理论基础。When a gear has a pitting fault,the vibration response characteristics caused by its time-varying meshing stiffness change is an important basis for the diagnosis of pitting faults,and an accurate gear geometry model is of great significance for the calculation accuracy of the gearing time-varying meshing stiffness.The tooth profile equations of internal and external meshing gears are derived,and a time-varying meshing stiffness calculation model of planetary gear pitting failure based on full tooth profile is proposed,which effectively solves the problem of the need for tooth number judgment and poor accuracy in the simplified model.The calculation accuracy of time-varying meshing stiffness of gear is improved.A theoretical foundation is laid for the dynamics modeling,failure mechanism analysis and fatigue life analysis of gear pitting failure.

关 键 词：故障诊断 全齿廓 行星齿轮 点蚀故障 时变啮合刚度 

分 类 号：TH132.41[机械工程—机械制造及自动化]