摘要
针对双主轴数控铣床的结构特点,运用有限元方法建立了双主轴箱体的有限元模型,进行了模态分析,给出了箱体的前10阶固有频率和相应振型,并进行了谐响应分析,得出了箱体的频率位移响应曲线。分析结论得出了箱体在受外部激振力下响应位移的最大处,并指出了机床箱体的薄弱环节,为机床关键部件的优化设计提出建议与改进措施。
According to the structure of two-spindles CNC milling machine tool,the finite element （FE ）rnodel of two-spindles housing was established by means of FE method. Analyzes the modal,the first ten natural frequencies and mode shapes of housing were given,and the response curves were obtained by analyzing the harmonic response of housing. In conclusion, the greatest response displacement of the housing suffering the external exciting force was found. Furthermore ,the weakness of housing was found,and as a result,it offers suggestions for the optimization design ofkeypats of machine tool.
出处
《机械设计与制造》
北大核心
2009年第5期160-162,共3页
Machinery Design & Manufacture
关键词
双主轴箱体
动态性能
模态分析
谐响应分析
Two-spindles housing
Dynamic characteristics
Modal analysis
Harmonic analysis
