光栅刻划机导向导轨支撑结构刚度优化设计  

Optimal design of guide way for a grating ruling system

作　　者：姚雪峰[1] 糜小涛[1] 宋楠[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《长春工业大学学报》2014年第5期495-499,共5页Journal of Changchun University of Technology

基　　金：国家重大科研装备研制项目(ZBYZ2008-1);吉林省科技发展计划项目(20140204075GX)

摘　　要：运用有限元手段对刀桥导轨的刚度进行了有限元分析,得到了刚度方面的分析结果和模态分析结果,并在不同位置加40N载荷进行实验验证。在此基础上,对原有的结构进行一体式结构优化设计。有限元分析结果表明,刀桥底座刚度有了大幅度的提高,一阶频率由原来的690.26Hz提高到998.73Hz,一阶振型的方向也从直接影响刻划的水平方向变为对刻划不敏感的垂直方向。Finite element analysis is applied to analyze the stiffness and modals of knife bridge guide way for a grating ruling system. 40 N load is added for experimental verification ,and the results are used to optimize the knife bridge structure. Finite element analysis for the new structure indicate that stiffness of the guide way base is strengthened where the first-order frequency increases from 690. 26 Hz to 998. 73 Hz and the vibration direction of first-order mode is changed from the horizontal to the vertical which is not sensitive to scribing.

关 键 词：光栅刻划机 刚度 有限元分析 模态 

分 类 号：TH122[机械工程—机械设计及理论]