摘要
人字齿轮传动的轴向振动会引起轴向分力不平衡,啮合位置变化,箱体振动,可能会造成高速大功率人字齿轮传动的失效。根据人字齿轮传动的结构,将其视为两对斜齿轮窜动,采用集中参数法,建立了人字齿轮传动的动力学模型和振动方程。在考虑时变啮合刚度、传动误差、螺旋角误差和偏心误差等的情况下,对人字齿轮传动的强迫振动响应进行了数值求解,获得了人字齿轮传动的轴向振动位移,以及轴向振动位移随齿轮螺旋角误差的变化趋势,得出人字齿轮窜动的轴向振动主要是由于螺旋角误差以及时变啮合刚度造成的结论,为止推滑动轴承的刚度设计提供了基础。
The axial vibration of double helical gear transmission can cause the imbalance of axial force which could influence the change of gear engaging position, oscillation of the gearbox casing and even the failure of high speed and high power double helical gear transmission. According to the structure of double helical gear transmission, it can be viewed as two helical gear pairs with axial movements, and the dynamics model and vibration equations are established using the lumped parameter method. Considering time--varying stiffness, transmission error, helix angle error and eccentric error, and so on, forced vibration responses of the double helical gear transmission system are numerically solved, and the axial vibration displacements and their changing trends with helix angle errors are obtained. It is concluded that the axial vibration of herringbone gear transmission is due to the helix angle error and the time--varying mesh stiffness, which lays a foundation for the stiffness design of plain thrust bearing.
出处
《机械传动》
CSCD
北大核心
2014年第7期13-17,共5页
Journal of Mechanical Transmission
关键词
人字齿轮
轴向振动
误差激励
刚度激励
Double helical gear Axial vibration Error excitation Stiffness excitation
