立式加工中心静刚度有限元仿真分析与试验测试  

Finite Element Analysis and Experimental Test for Static Stiffness of a Vertical Machining Center

作　　者：黄孝平[1] 

机构地区：[1]南宁学院机电与质量技术工程学院,南宁530200

出　　处：《组合机床与自动化加工技术》2015年第8期101-103,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：广西高校特色专业及课程一体化建设项目(GXTSZY305);南宁学院2014年校级重点专业建设项目(2014XJZDZY01)

摘　　要：文章以某立式加工中心为研究对象,首先在Pro/E中建立了机床整机的实体模型,然后将模型导入至ANSYS软件中,并添加了各主要结合面间的刚度值,仿真分析得到机床x、y、z3个方向的静刚度值分别为9700 N/mm、12258 N/mm、15268 N/mm。对机床整机的静刚度开展了试验测试,测得x、y、z3个方向的静刚度分别为9255 N/mm、11700 N/mm、15517 N/mm。3个方向的仿真误差均在±5%以内,证明文中的有限元模型精度很高。对机床整机静刚度仿真分析、结合面建模具有指导意义。Static stiffness of a vertical machining center was researched based on finite element analysis and experimental test. Solid model of the machine tool was established in Pro/E, and then imported into ANSYS. Parameters of several important contact surfaces were added into the finite element model, and the simulated static stiffness of three directions were 9700 N/mm, 12258 N/mm and 15268 N/mm, respectively. In addition, static stiffness of the machine tool was tested, and the results were 9255 N/mm, 11700 N/mm and 15517 N/mm, respectively. The simulation errors were less than ± 5% which means the finite element model was accurately established. This paper provides guidance for finite element simulation for static stiffness of machine tools, as well as contact surfaces modeling.

关 键 词：立式加工中心 静刚度 有限元仿真 结合面参数 试验测试 

分 类 号：TH164[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]