含齿侧间隙及几何偏心的两级齿轮传动系统啮合特性分析  

Meshing Characteristics Analysis of Two-Stage Gear Transmission System with Backlash and Geometric Eccentricity

作　　者：郭旭 周建星[1] 孙占飞 GUO Xu;ZHOU Jianxing;SUN Zhanfei(School of Mechanical Engineering,Xinjiang University,Urumqi Xinjiang 830017,China)

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830017

出　　处：《新疆大学学报（自然科学版）（中英文）》2022年第1期103-110,共8页Journal of Xinjiang University(Natural Science Edition in Chinese and English)

基　　金：国家自然科学基金(51665054);新疆维吾尔自治区自然科学基金(2018D01C043);新疆大学博士科研启动基金(BS160242).

摘　　要：本文以两级齿轮传动系统为研究对象,基于系统质量不平衡建立转子有限元模型、与包含不同承载形式的滚动轴承模型及齿轮有限元模型相结合,考虑齿侧间隙和齿轮几何偏心的影响,建立了含齿侧间隙及几何偏心的两级齿轮传动系统有限元模型,分析了系统的固有特性,并研究了齿侧间隙和齿轮几何偏心对系统啮合特性的影响.结果表明:齿侧间隙会使啮合力产生动态变化,但其频率成分没有发生改变,因此选择合适的间隙可以提高系统啮合过程的平稳性;减小齿轮的几何偏心可有效抑制齿轮啮合力的波动,在齿轮的设计加工阶段应尽可能避免几何偏心的出现.Taking the two-stage gear transmission system as the research object in this paper.Establishes the rotor finite element model considering the mass imbalance of the system,and combines it with the rolling bearing model and gear finite element model including different load-bearing forms,considering the influence of backlash and gear geometric eccentricity.The finite element model of two-stage gear transmission system with backlash and geometric eccentricity was established.The inherent characteristics of the system were analyzed,and the effects of backlash and gear geometric eccentricity on the meshing characteristics of the system were studied.The results show that the meshing force changes dynamically with the backlash,but the frequency component does not change.Therefore,choosing the appropriate backlash can enhance the stability of the meshing process.Reducing the geometric eccentricity of gear can effectively restrain the fluctuation of meshing force.The appearance of geometric eccentricity should be avoided as far as possible in the design and processing stage of gear.The results provide a theoretical basis for dealing with the vibration and noise reduction of gear transmission system.

关 键 词：齿轮几何偏心 齿侧间隙 有限元法 啮合特性 

分 类 号：TH132[机械工程—机械制造及自动化]