车铣复合加工中心动态特性分析  

Dynamic Characteristic Analysis of Turning and Milling Compound Machining Center

作　　者：王增 王德伦[1] WANG Zeng;WANG Delun(School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《机械工程师》2022年第11期87-90,共4页Mechanical Engineer

基　　金：国家自然科学基金项目“机床精度的机构弹性误差运动学与动力学理论基础研究”(U1808213)。

摘　　要：以DTM-B70车铣复合加工中心为例,对机床进行有限元动力学分析,分析机床的动态特性,为机床结构的动力学设计提供依据。研究了关键零部件动态特性结合面等效原理,介绍了支承件的结合面等效方法,基于支承件结构建立整机的有限元物理模型,分析其动态性能。根据动态特性分析,确定机床立柱为该机床薄弱环节,以便于后续对薄弱环节进行结构优化,提高部件的刚度和固有频率。Taking DTM-B70 turning and milling compound machining center as an example,the finite element dynamics analysis of the machine tool is carried out,the dynamic characteristics of the machine tool are analyzed,and the basis for the dynamic design of the machine tool structure is provided.The equivalent principle of the joint surface of the dynamic characteristics of the key components is studied,and the equivalent method of the joint surface of the support is introduced.Based on the structure of the support,a finite element physical model of the whole machine is established to analyze its dynamic performance.According to the analysis of dynamic characteristics,it is determined that the machine tool column is the weak link of the machine tool,so as to facilitate the subsequent structural optimization of the weak link and improve the stiffness and natural frequency of the components.

关 键 词：车铣复合加工中心 有限元分析 模态分析 谐响应分析 

分 类 号：TH132[机械工程—机械制造及自动化]