基于ANSYS Workbench的内螺纹磨削中心整机动态特性分析  

Dynamic Performance Analysis of Internal Thread Grinding Center Based on ANSYS Workbench

作　　者：徐先勇[1] 崇凯[1] 严小林 董小飞[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]泰兴市晨光高新技术开发有限公司,江苏泰兴225400

出　　处：《组合机床与自动化加工技术》2012年第12期23-25,29,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：高档数控机床与基础制造装备科技重大专项(2009ZX04012-012);江苏省普通高校研究生科研创新计划(CX10B_258Z);江苏高校优势学科建设工程资助项目

摘　　要：以四轴三联动内螺纹磨削中心为研究对象,通过对CAD模型进行简化,运用ANSYS Workbench对结合面的处理功能建立了整机有限元模型。在模拟机床工况的情况下,进行了整机的静、动态特性分析,得出了机床的动刚度比静刚度小很多。由模态分析知,机床固有频率有效的避开了自激振动频率,不会发生共振。通过谐响应分析,找出了机床在动态磨削力下的薄弱环节,并结合振型提出了提高整机动态特性的措施,为机床的开发设计和结构优化提供了理论参考依据。Taking the Internal Thread Grinding Center of four-axle3D as the researching object the sim- plified model of CAD and The function of ANSYS Workbench for joint surface was used to set up the whole machine FEM model. The condition of working machine tool was simulated and the dynamic per- formance of the whole machine was analyzed. The study showed that the dynamic stiffness was much smaller than the static stiffness. Modal analysis verified that natural frequency was not in the range of the self excited vibration. So resonance would not happen. Through harmonic analysis, the weak points of working machine tool were identified, and the measures of improving dynamic performance were pro- posed by mode shapes. It would provide the reference for the design and optimization of machine tool structure in theory.

关 键 词：ANSYS WORKBENCH 内螺纹 磨削中心 模态分析 谐响应分析 

分 类 号：TH16[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]