基于元结构的精密机床床身结构动态分析和优化  

Structural dynamic analysis and optimization of precision machine tool bed based on unit structure

作　　者：王富强[1] 芮执元[1] 雷春丽[1] 吴沁[1] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《机械设计》2012年第5期93-96,共4页Journal of Machine Design

基　　金：甘肃省自然科学基金资助项目(1010RJZA043);国家科技重大专项基金资助项目(2009ZX04001-015)

摘　　要：为提高某精密数控机床床身抗振性能,运用结构动态优化原理和有限元法的变量化分析方法,对精密机床床身元结构进行动态特性分析。并以元结构分析结果为依据,提出了该床身结构的2种结构优化方案。比较分析2种结构优化方案与原床身结构方案的动态性能,分析结果表明,优化方案床身的动态性能得到了明显提高。In order to enhance the anti-vibration performance of a precision NC machine bed, the dynamic performance of the u- nit structure of the machine bed was analyzed by means of the struc- tural dynamic optimization principle and variation analysis technolo- gy and by finite element method. Based on the analysis result of the unit structure, two structural optimization schemes for the machine bed were obtained. Compared with that of the original machine bed, the dynamic performance of two structural optimization schemes is significantly improved.

关 键 词：精密机床 床身 结构动态分析 元结构 

分 类 号：TH122[机械工程—机械设计及理论]