数控平面磨床主轴减振方法研究  

ABSORBING METHOD FOR THE DYNAMIC COUPLING SPINDLE SYSTEM OF NC SURFACEGRINDING MACHINE

作　　者：杨志永[1] 高咏生[2] 张大卫[3] 黄田[3] 

机构地区：[1]天津大学机械工程学院,天津300072 [2]香港科技大学 [3]天津大学

出　　处：《机械工程学报》2002年第z1期90-95,共6页Journal of Mechanical Engineering

摘　　要：将一类数控平面磨床主轴系统简化为耦合双弹性梁结构,分别建立了非齐次边界条件下的机架子系统Euler梁和转子子系统Rayleigh梁解析模型,给出了各子系统在模态坐标下的广义动、势能。利用拉格朗日方程进行子系统综合,构造了广义坐标下的系统动力学模型。据此,考虑实际工况,设计了一动力减振器。模拟仿真和试验结果表明,在系统加入动力减振器后,主轴末端振动幅值可得到有效减小。The spindle system of a NC surface grinding machine is simplified as elastic-coupling beam, and the coupled subsystem of the bearings is supposed as springs without mass. Then the analytical models of the frame and the rotor subsystem with inhomogeneous boundary condition are established, and their modal kinetic and potential energy are also got respectively. By synthesizing subsystem method with Lagrange's equation, the dynamic model of the spindle system is obtained. Finally, according to the actual condition, a dynamic absorber is designed and the results of simulation and experiment show that the amplitude of spindle can be declined by 30 percent when the dynamic absorber is attached.

关 键 词：平面磨床 动力减振器 耦合系统 转子轴承系统 

分 类 号：TH133.3[机械工程—机械制造及自动化]