摘要
为了研究啮合相位关系对行星齿轮传动系统动态特性的影响,推导了3种啮合相位差的计算公式,并建立了行星齿轮传动的纯扭转动力学模型。对行星齿轮传动的固有特性进行了研究,分析了啮合相位差对行星齿轮传动的固有频率和振动模态的影响。研究结果表明:啮合相位对行星齿轮传动结构的固有特性影响很大;啮合相位差的存在使行星齿轮传动系统内部存在多种啮合刚度组合,从而导致系统出现了多个密集频率,密集频率的出现使各行星轮的振动模态产生较大的差异,导致载荷在各行星轮间分配不均,降低了系统的可靠性。
The method for calculating the meshing phase and a torsional dynamics model of planetary gear were developed to study the effects of meshing phase on natural characteristics of planetary gears. The effects of meshing phase on natural frequency and vibration mode of planetary gears were analyzed. The results show that the meshing phase influences the natural characteristics of planetary gears significantly, and there are various compound modes for mesh stiffness in planetary gears because of these meshing phase, which leads to closed frequencies of occurrences in the system. There are difference vibration modes for planets because of closed frequencies of occurrences, which makes non-uniform load on each planet resulting in the reliability of planetary gears reduce.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第17期2035-2040,共6页
China Mechanical Engineering
基金
福建省重点实验室开放基金资助项目(2008J1002)
福建省科技计划资助项目(2007H2009)
关键词
行星齿轮
啮合相位
固有特性
密集频率
振动模态
planetary gear
meshing phase
natural characteristics
closed frequency
vibration mode
