立式机床主轴动态特性分析

摘要

主轴系统是机床产生振动的关键部件 ,分析主轴的动态特性可以了解机床的抗振能力和变形方式.分析中将主轴与支撑轴承简化成一个弹性系统 ,同时将主轴旋转产生的离心力当作结构的预应力 ,该方法为主轴类零件的动态分析提供了新的思路.%The spindle system is a key part which produces the vibration of machine tool .Through the analysis of the dynamic per-formance of a machine tool ,you can understand the vibration resistance and deformation of machine tool .In this analysis ,the spindle and bearings of the machine tool is simplified as an elastic system ,and the centrifugal force is regard as the prestress of structure . This paper provides a new methed to analyze the dynamic characteristics of a machine tool's spindle .