Dynamic Characteristic Calculation of CNC Machine Tools Base Based on FEM
Base is a main component of CNC machine tool,so its dynamic characteristics impact on machine tools machining precision and stability directly.However,the traditional analytic way cannot finish the accurate and complete calculation and analysis.So it is very necessary to make FEM dynamics research on base of machine tool.This paper employs FEM modal analysis to research the free vibration of base which is undamped.And then we can get the nature frequencies of the bases first six modal,there are 407.79 Hz,430.47 Hz,501.23 Hz,623.63 Hz,626.51 Hz and 661.19 Hz,respectively.In addition,the first six modal shapes are also obtained.The forth frequency and the fifth frequency are much closed,so they can be considered the multiple roots for the vibration equation.The research results can provide theoretical basis for fault diagnosis,safety operation and vibration control,and the important parameters are useful for structural improvement and optimization design of the NC machine tool.
NC Machine Tool Dynamics Modal Analysis Dynamic Characteristic
Xiaolei Deng Jianchen Wang Zhaozhong Zhou
College of Mechanical Engineering,Quzhou University,Quzhou 324000,China
国际会议
宁波
英文
20-24
2012-11-12（万方平台首次上网日期，不代表论文的发表时间）