• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (11): 120-132.doi: 10.3901/JME.2022.11.120

• 机械动力学 • 上一篇    下一篇

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双螺母滚珠丝杠副进给系统轴向固有频率衰退预测方法研究

谢经伦, 周长光, 聂从辉, 冯虎田, 周华西   

  1. 南京理工大学机械工程学院 南京 210094
  • 收稿日期:2021-08-18 修回日期:2022-02-07 出版日期:2022-06-20 发布日期:2022-08-08
  • 通讯作者: 周长光(通信作者),男,1989年出生,博士,讲师。主要研究方向为数控机床功能部件共性检测技术、失效机理分析、故障诊断等。E-mail:zhoucg@njust.com
  • 作者简介:谢经伦,男,1997年出生。主要研究方向为精密仪器及机械。E-mail:1031616348@qq.com
  • 基金资助:
    国家自然科学基金(51905274)、国家科技重大专项高质量发展专项(TC210H038-02)和南京理工大学丽水滚动功能部件工业技术联合研究(1214021010507)资助项目

Research on the Degradation of the Axial Natural Frequency of the Double-Nut Ball Screw Feed Drive System

XIE Jinglun, ZHOU Changguang, NIE Conghui, FENG Hutian, ZHOU Huaxi   

  1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094
  • Received:2021-08-18 Revised:2022-02-07 Online:2022-06-20 Published:2022-08-08

摘要: 针对双螺母滚珠丝杠副进给系统在运行过程中出现的轴向固有频率衰退现象,首先基于分布式参数法与集总参数法构建了双螺母滚珠丝杠副进给系统的动力学方程;然后基于Archard磨损理论,建立了进给系统刚度的衰退模型;最后将动力学方程与刚度衰退模型结合,提出了一种双螺母滚珠丝杠副进给系统轴向固有频率衰退预测模型。通过自主搭建的滚珠丝杠副进给试验台,测得了不同运行转数对应的进给系统频响曲线。试验结果表明:在运行148.5万转后,进给系统的轴向固有频率从148 Hz下降至143.2 Hz。轴向固有频率理论值与试验值的误差在1 Hz以内,证明了所提出的滚珠丝杠副进给系统轴向固有频率衰退预测方法的准确性。

关键词: 双螺母滚珠丝杠副进给系统, 动力学方程, Archard磨损理论, 轴向固有频率

Abstract: To investigate the degradation of the axial nature frequency of the double-nut ball screw feed drive system, the dynamic equation of the feed drive system on the basis of the distributed parameter method and lumped parameter method is proposed, and the axial stiffness degrading model of the feed drive system based on Archard wear theory is established, on the bais of the axial stiffness degrading model and dynamic equation, the axial nature frequency degrading model is summarized. The frequency response curve of the feed drive system within 1.485 million revolutions is collected, the result shows that the natural frequency dropped to 143.2 Hz from 148 Hz. And the maximum prediction error not exceeding 1 Hz, which strongly proves the accuracy of the axial nature frequency degrading model.

Key words: double-nut ball screw feed system, dynamic model, archard wear theory, axial natural frequency

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