机床传动丝杠的动力分析  

Dynamic Analysis of the Machine Drive Screw

作　　者：张会端[1] 谭庆昌[1] 李庆华[2] 

机构地区：[1]吉林大学机械科学与工程学院,长春130025 [2]长春大学机械工程学院,长春130025

出　　处：《农业机械学报》2009年第9期220-226,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：吉林省自然科学基金资助项目(20050525)

摘　　要：把机床传动丝杠简化为承受预拉伸力和移动力作用的旋转Timoshenko梁,综合考虑了陀螺效应、预拉伸力和移动力对丝杠振动的影响,以及丝杠两端轴承的支承作用,建立了弹性支承条件下丝杠的频率方程,利用拉格朗日方程建立了丝杠的动力学模型,利用振型叠加原理和隆格-库塔法求解,分析了系统参数对丝杠涡动转速和横向振动的影响。The drive screw was simplified as a rotating Timoshenko beam bearing the pre-tension force and moving forces,and the frequency equation of the screw with the elastic end supports was derived under considering the effect of gyroscope,the pre-tension force,the moving forces on the screw vibration,and the bearing stiffness.The dynamic model of the drive screw was established using Lagrange equation,and was analyzed adopting the mode superposition and Runge-Kutta method to calculate the transient response.Eventually,the effect of the system parameters on the whirl speed and lateral vibration was studied to supply a base for designing the drive system.

关 键 词：动力学 传动丝杠 涡动转速 横向振动 

分 类 号：TH113.1[机械工程—机械设计及理论] TG502.31[金属学及工艺—金属切削加工及机床]