弧面分度凸轮机构传动系统非线性动力学特性研究

RESEARCH ON NONLINEAR DYNAMIC CHARACTERISTICS OF THE TRANSMISSION SYSTEM FOR ROLLER GEAR CAM INDEXING MECHANISMS

对弧面分度凸轮机构传动系统，用集中参数法建立了较为精确的5自由度等效动力学模型，在该模型中，考虑了电动机动力特性、传动副间隙、阻尼、油膜挤压、构件弹性和负载特性的影响，并推导出了该传动系统的5自由度非线性微分方程组，使用有限差分法，用FORTRAN77语言编制了该传动系统动态模拟计算机应用软件RGCAMD(Roller gear cam dynamic)，并进行了大量的动态模拟计算，详细地分析了系统参数对动态响应的影响，总结出了各参数对动态响应的影响规律，得到了一些工程上很有应用价值的结论。

A precise five degrees of freedom nonlinear analytical model is described. It's set up for the dynamics of transmission system fo r roller gear cam indexing mechanisms by the concentrated parameter method. In t he model, the influence of the characteristics of the motor, the backlash in the transmission pairs, the squeezing of oil film, the elasticity of the component a nd the characteristic of the load are considered. And the nonlinear differential equations with five degrees of freedom for the transmission system are derived. Computer software, named RGCAMD is developed for the dynamic simulation of the transmission system in FORTRAN77 in term of finite differential method. With the amount of dynamic simulation calculations on the transmission system and the anal ysis about the effect of the system parameters on the dynamical response in cons iderable details, the pattern of the effect of every parameter on the dynamic re sponse is summed up and some valuable conclusions for engineering are attained.