| 陈国达,王深.转子轴颈形状误差对超声-气体静压轴承混合支承主轴误差运动的影响[J].高技术通讯(中文),2025,35(7):746~759 |
| 转子轴颈形状误差对超声-气体静压轴承混合支承主轴误差运动的影响 |
| Effect of rotor journal shape error on the error motion of ultrasonic-aerostatic hybrid bearing spindle |
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| DOI：10. 3772 / j. issn. 1002-0470. 2025. 07. 007 |
| 中文关键词: 形状误差;超声悬浮轴承;超声悬浮力;误差运动;混合支承主轴 |
| 英文关键词: shape error,ultrasonic bearing,ultrasonic levitation force,error motion,hybrid bearing spindle |
| 基金项目: |
| 作者 | 单位 | | 陈国达 | (浙江工业大学机械工程学院 杭州 310023)
(浙江工业大学特种装备制造与先进加工技术教育部/ 浙江省重点实验室 杭州 310023) | | 王深 | |
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| 中文摘要: |
| 为探究声悬浮转子轴颈形状误差对超声-气体静压轴承混合支承主轴误差运动的影响,对声悬浮转子轴颈形状误差进行了实际测量和理论模型表征,通过线性加速度法建立了考虑声悬浮转子轴颈形状误差的混合支承主轴转子动力学模型,使用 Matlab 编程求解得到超声悬浮轴承承载力以及主轴位移曲线变化,同时通过激光位移传感器测量主轴的误差运动,将实测数据经过低通滤波后与仿真模型进行对比分析,得到了声悬浮转子轴颈形状误差对超声悬浮轴承承载力以及混合支承主轴误差运动的影响规律。 结果表明:引入形状误差能够增加超声悬浮轴承承载力,但主轴的误差运动同样会增大,径向误差运动比轴向误差运动更加明显,实验与仿真模型的平均偏差为 8. 12% 。 该研究对基于声悬浮的气体静压主轴误差运动分析与主动控制具有一定参考意义,有利于提高混合支承主轴多场耦合转子动力学模型的精度。 |
| 英文摘要: |
| In order to explore the influence of acoustic levitation rotor journal shape error on the error motion of ultrasonic-aerostatic hybrid bearing spindle, the experimental measurement and theoretical model characterization of the journal shape error of the acoustic levitation rotor are carried out and the dynamic model of ultrasonic-aerostatic hybrid spindle considering the journal shape error is established by linear acceleration method. The bearing capacity and the change of spindle displacement curve are obtained by Matlab programming. At the same time,the error motion of spindle is measured by laser displacement sensor. The measured data are compared with the simulation model after low-pass filtering to get the influence of the shape error of the acoustic levitation rotor on the bearing capacity of the ultrasonic bearing and the error motion of the mixed support spindle. The results show that the introduction of shape error can increase the bearing capacity,but the error motion of the spindle will also increase,and the radial error motion is more obvious than the axial error motion. The average deviation between the experimental and simulation models is 8. 12% . This study provides valuable insights for the error motion analysis and active control of the aerostatic spindle based on acoustic levitation,which is conducive to improving the accuracy of the multi-field coupling rotor dynamics model of the hybrid bearing spindle. |
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