高性能直驱混联数控机床静刚度分析  

Static Stiffness Analysis of a High Performance Hybrid CNC Machine Tool Driven by Linear Motor

作　　者：徐安林[1] XU Anlin(Intelligent Manufacturing Engineering Center, Wuxi Institute of Technology, Wuxi Jiangsu 214121, China)

机构地区：[1]无锡职业技术学院智能制造工程中心,江苏无锡214121

出　　处：《机床与液压》2020年第9期158-161,180,共5页Machine Tool & Hydraulics

基　　金：江苏省高校自然科学研究面上项目(16KJB520051)。

摘　　要：基于模块化设计技术,开发了一种由直线电机驱动的高性能混联数控机床,主要由2-DOF并联主轴头和XY工作台两大功能模块组成。以该机床并联主轴模块为研究对象,基于边界元和刚度矩阵组集方法,建立了机床静刚度模型,并编制了刚度计算软件,由此计算得到机床主轴在整个工作空间内位置刚度和旋转刚度的分布。数值仿真表明:该机床具有较好的刚度特性,满足轻切削加工静刚度设计要求。A high performance hybrid CNC machine tool driven by linear motors was developed based on modular design technology,which was mainly composed of two main functional modules,such as 2-DOF parallel spindle head and XY worktable.Taking the parallel spindle module of the machine tool as the research object,based on the method of boundary element and stiffness matrix set,the static stiffness model of the machine tool was established,and the stiffness calculation software was compiled.The distribution of position stiffness and rotational stiffness of the machine tool spindle in the whole working space was calculated.The simulation results show that the machine tool has good stiffness characteristics and meets the design requirements of static stiffness for light cutting.

关 键 词：混联机床 静刚度分析 边界元 刚度矩阵 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TH11[机械工程—机械设计及理论]