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Model-based error motion prediction and fit clearance optimization for machine tool spindles

机译：基于模型的误差运动预测和机床主轴的拟合间隙优化

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摘要

In this paper, the error motion issue of machine tool spindles is investigated. Firstly, a complete dynamic model of spindle systems is presented, in which the spindle shaft is dis-cretized with the rigid body element and the rolling bearings are modelled using Gupta's theory. Secondly, the error motion prediction method is proposed based on the spindle model above, and then verified with the measurement on a grinding spindle. The fit clearance between bearing outer rings and the housing is introduced as a design parameter for error motion prediction under various conditions. The results show that the radial and tilt error motions increases nonlinearly with the raising of both clearance and rotation speed. Lastly, the model-based optimization scheme is given and the bearing fit clearance is optimized to meet the requirement of spindle design.
机译：在本文中，研究了机床主轴的错误运动问题。首先，提出了一种完整的主轴系统的动态模型，其中主轴轴与刚性主体元件拆分，并且使用Gupta理论建模滚动轴承。其次，基于上面的主轴模型提出了误差运动预测方法，然后用磨削主轴测量验证。轴承外环和壳体之间的拟合间隙被引入各种条件下的误差运动预测的设计参数。结果表明，径向和倾斜误差运动随着间隙和旋转速度的提高而产生非线性。最后，给出了基于模型的优化方案，并且优化了轴承拟合间隙以满足主轴设计的要求。

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  • 来源
    《Mechanical systems and signal processing》 |2019年第1期|106252.1-106252.15|共15页
  • 作者

    Hongrui Cao; Bijian Li; Yamin Li; Ting Kang; Xuefeng Chen;

  • 作者单位

    State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 PR China;

    State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 PR China;

    Department of Mechanical and Aerospace Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong;

    State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 PR China;

    State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 PR China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Spindle; Modelling; Fit clearance; Error motion; Design optimization;

    机译：主轴;造型;适合清关;错误运动;设计优化;

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