| 数控螺杆铣床床身结构的动态优化设计 |
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| 引用本文： | 刘杰,王海军,王可,孙兴伟.数控螺杆铣床床身结构的动态优化设计[J].组合机床与自动化加工技术,2011(3). |
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| 作者姓名： | 刘杰 王海军 王可 孙兴伟 |
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| 作者单位： | 沈阳工业大学机械工程学院,沈阳,110870 |
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| 摘 要： | 以数控螺杆铣床床身为研究对象,利用结构动态设计原理和有限元分析软件的变童化分析技术,对其作动态特性分析并对其结构进行优化设计.动态特性分析结果表明原始床身的低阶固有频率偏低且与机床的激振频率接近,容易产生共振并影响机床的稳定切削.为此根据床身的结构特点,提取床身的典型元结构进行变量分析,以元结构分析结果为依据,对床身结构做优化设计,结果表明经优化后床身的动态性能显著提高,达到了设计要求的目标.
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| 关 键 词： | 动态特性 结构优化 固有频率 有限元分析 |
The Dynamic Optimal Design of Bed Structure for CNC Screw Milling Machine |
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| LIU be,WANG Hai-jun,WANG Ke,SUN Xing-wei.The Dynamic Optimal Design of Bed Structure for CNC Screw Milling Machine[J].Modular Machine Tool & Automatic Manufacturing Technique,2011(3). |
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| Authors: | LIU be WANG Hai-jun WANG Ke SUN Xing-wei |
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| Affiliation: | LIU Jie,WANG Hai-jun,WANG Ke,SUN Xing-wei (School of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China) |
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| Abstract: | By using the theory of dynamic design and the method of finite element analysis software,the dynamic characteristic analysis of CNC screw milling machine bed is finished.Result of analysis shows that low-order natural frequencies are too low and it is on the side of machine vibration frequency that easily leads to resonance and influences machine stability cutting.In this condition,according to the structural characteristic of the machine bed,typical element structure is extracted and analyzed by variable p... |
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| Keywords: | dynamic characteristic structure optimization natural frequency finite element analysis |
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