大型数控双柱立车立柱动力学结构分析与优化  

Dynamics structure analysis and optimization of large CNC double column vertical lathe column

作　　者：吕冬梅[1] 韩江[2] 

机构地区：[1]安徽交通职业技术学院汽车与机械工程系,安徽合肥230051 [2]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《制造技术与机床》2015年第5期42-45,共4页Manufacturing Technology & Machine Tool

基　　金：国家科技重大专项项目("标准型数控系统的产业化及专用型齿轮机床数控系统的研究开发"2012ZX04001-021);安徽省高等学校自然科学研究项目("数控齿轮机床主轴智能故障诊断技术研究"KJ2013B069)

摘　　要：立柱是数控双柱立车的重要支撑件,其结构设计是否合理及其静动态特性的高低直接影响机床的加工精度和寿命。文章通过有限元分析得出立柱的各阶固有频率和振型;并根据虚功原理得到其动力学方程;然后对动力学模型结构进行优化设计,主要以壁厚、筋板厚度、筋板间距为优化变量;最终对改进后的立柱进行分析;并对立柱改进前后的动态特性进行对比分析,运用模态实验进行合理性验证,达到立柱轻量化设计的目的,为同类零部件的生产加工提供理论依据。The pillar is an important support of CNC double column vertical lathe. Whether its structural design is reasonable and its high and low static and dynamic characteristics directly affects the machining accuracy of machine tools and longevity. Through the finite element analysis, every order natural frequency and vi- bration mode of column can be arrived, and according to the principle of virtual work, we get its dynamic equation. And the main wall thickness, thickness of steel plate, steel plate spacing are regarded as opti- mization variables, then the dynamic model structure design can be optimized. Finally and the dynamic characteristics of a column before and after improvement are analyzed, using modal experiment verifies the rationality, to achieve the lightweight design of the columns. The paper can provide theoretical basis for similar parts production and processing.

关 键 词：立柱 虚功原理 有限元分析 模态分析 结构优化 轻量化设计 

分 类 号：TG714[金属学及工艺—刀具与模具]