考虑直线导轨影响的数控机床动态性能分析

为了提高机床产品设计的成功率,需要在产品设计完成后,物理样机制造出来之前对其进行分析和评价.直线滚动导轨是数控机床常用的重要部件,因此对采用滚动导轨的数控机床的动态性能进行分析,研究对数控机床性能的影响具有非常重要的意义.以某机床厂生产的CKS6125数控机床为研究对象,提出了机床导轨结合部特性仿真分析的有限元方法,研究了导轨支承部分弹簧阻尼单元的布置,建立了CKS6125机床进给系统有限元模型,对机床的动态性能进行分析和确认.最后采用试验的方法对有限元分析模型进行必要的验证.

Dynamic Performances Analysis of NC Machine Tool Considering Linear Rolling Guideway

To design a machine tool successfully,its essential parts should be analyzed and evaluated after design but before prototype being made.The linear rolling guideway is one of the usual parts of NC machine tool,so the dynamic/static characteristics of NC machine tools equipped with rolling guideway and how the guideway affects the performance of NC machine tools are of great significance and should be studied.With the CKS6125 NC machine tool manufactured by a certain plant as instance,a FEA(finite element method) is proposed to simulate the dynamic characteristics of the joint parts of rolling guide and study the configuration of spring/damping elements for guide supports.A FEA model for the feed unit of the machine tool is thus developed to analyze and confirm its dynamic characteristics.The FEA model has been verified through experiments.