| 基于球轴承刚度计算的电主轴结构分析与优化 |
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| 引用本文： | 李娜,王彦伟,王书亭.基于球轴承刚度计算的电主轴结构分析与优化[J].机械设计与制造,2011(8). |
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| 作者姓名： | 李娜 王彦伟 王书亭 |
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| 作者单位： | 华中科技大学国家CAD支撑软件工程技术研究中心,武汉,430074 |
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| 基金项目： | 国家科技重大专项课题资助“高速卧式加工中心” |
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| 摘 要： | 电主轴的结构,动态特性对数控机床的加工效率和精度的影响很大。对角接触球轴承电主轴单元进行了静刚度分析,在有限元软件ANSYS中建立了电主轴球轴承-转子系统的参数化有限元模型,并以提高电主轴的静刚度为优化目标,对电主轴的支承跨距和电机的安装位置进行了优化分析及计算,并对优化前后的电主轴系统进行了模态分析,对比其前三阶频率及振型的变化,得出了相关结论。
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| 关 键 词： | 电主轴 角接触球轴承 动态特性 结构优化 模态分析 |
Analysis and optimization design of electric spindle based on stiffness calculation of ball bearing |
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| LI Na,WANG Yan-wei,WANG Shu-ting.Analysis and optimization design of electric spindle based on stiffness calculation of ball bearing[J].Machinery Design & Manufacture,2011(8). |
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| Authors: | LI Na WANG Yan-wei WANG Shu-ting |
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| Affiliation: | LI Na,WANG Yan-wei,WANG Shu-ting(National Engineering Research Center for CAD,Huazhong University of Science & Technology,Wuhan 430074,China) |
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| Abstract: | The dynamic characteristic of the electric spindle affects CNC machine tools significantly.The static stiffness of angular contact ball bearing is analyzed,and a parameterized finite element model of the bearing-rotor system is established in ANSYS.Choosing the static stiffness of the electric spindle as the optimization goal,support span of the spindle and motor installation location are optimized and calculated.In addition,modal analysis of the electric spindle system before and after optimization is carr... |
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| Keywords: | Electric spindle Angular contact ball bearing Dynamic characteristic Structural optimization Modal analysis |
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