太阳轮偏心误差对人字齿行星传动动态特性影响

以人字齿行星齿轮为研究对象,考虑人字齿轮实际结构,基于集中参数理论,建立计入各个构件轴向振动的人字齿轮行星传动广义动力学模型,建模中考虑制造偏心误差和齿廓误差、轴承支撑刚度、轮齿时变啮合刚度和陀螺效应等影响因素.该模型可用于具有不同类型制造误差和任意数目行星轮的人字齿行星传动振动性能分析.采用数值算法求解系统受迫振动响应,分别分析了时域和频域动态响应.以太阳轮制造偏心误差Es为例,着重研究Es对人字齿行星传动动态特性影响规律.结果表明:制造误差Es增强了人字齿行星传动系统中的动态响应以及动态啮合力的波动.

Effect of Sun Gear Manufacturing Eccentric Errors on Dynamic Performances of Herringbone Planetary Gear Train

Based on the structure of herringbone gears and using the lumped-parameter method， a generalized dynamic model of a herringbone planetary gear train (HPGT) was presented to study the forced vibration characteristics. Taking into account the manufacturing eccentric errors and tooth profile errors， bearing stiffness， time-varying mesh stiffness， and gyroscopic effect， the model can be utilized for the vibration performance analysis with different types of manufacturing errors and arbitrary number of planets. The forced vibrations of an HPGT were numerically computed with the presented model， and analyzed in time and frequency domain， respectively. The effects of manufacturing errors especially the sun gear eccentric error E_s on dynamic characteristics were discussed， revealing that manufacturing error excitations， such as the sun gear eccentric error E_s， enhance the dynamic responses and dynamic mesh force fluctuations in HPGT.