| 数控机床主轴刀柄锥配合结合部动力学建模 |
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| 引用本文： | 马宇箭,唐小琦,毛宽民,朱明. 数控机床主轴刀柄锥配合结合部动力学建模[J]. 华中科技大学学报(自然科学版), 2011, 0(1): 75-77 |
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| 作者姓名： | 马宇箭 唐小琦 毛宽民 朱明 |
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| 作者单位： | 华中科技大学国家数控系统工程技术研究中心; |
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| 基金项目： | 国家自然科学基金资助项目(50975104); 国家科技部十一五重大专项(2009ZX04009-011,2009ZX04014-052) |
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| 摘 要： | 在分析现有主轴刀柄动力学建模方法缺点的基础上,根据刚度影响因子的概念,建立了锥配合结合部动力学模型,并利用结构动力学矩阵与频率响应函数矩阵互逆的特性,识别出结合部的动力学模型参数.实验表明:计算出的模型固有频率与模态实验得到的值的相对误差在10%左右,验证了所建模型的有效性.
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| 关 键 词： | 数控机床 主轴刀柄 结合部 动力学模型 刚度影响因子 模态分析 非线性最小二乘法 |
Dynamics model for the conical joint of spindle and tool holder on NC machine tools |
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| Ma Yujian Tang Xiaoqi Mao Kuanmin Zhu Ming. Dynamics model for the conical joint of spindle and tool holder on NC machine tools[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2011, 0(1): 75-77 |
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| Authors: | Ma Yujian Tang Xiaoqi Mao Kuanmin Zhu Ming |
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| Affiliation: | Ma Yujian Tang Xiaoqi Mao Kuanmin Zhu Ming(National Engineering Research Center for Numerical Control System,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Existing dynamic modeling methods used in spindles and tool holders were analyzed.According to the concept of stiffness impact factor,a dynamic model of conical joint was established based on the mutual inverse characteristic of the structural dynamic matrix and frequency response function matrix,the parameters of joints were identified.Experiments show that the error between calculated natureal frequency of the model and modal test measured is about 10%.The model eatable wished was proved to be effective. |
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| Keywords: | numerical control(NC) machine tools spindle shank joint dynamics model stiffness impact factor modal analysis nonlinear least square method |
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