China Mechanical Engineering ›› 2021, Vol. 32 ›› Issue (18): 2254-2261,2267.DOI: 10.3969/j.issn.1004-132X.2021.18.015

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Relationship of Raceway Center Distance Errors and Load-bearing Performance of Rolling Linear Guide Pairs

LIANG Yi1;WANG Xudong1;WANG Xiaoyi1;FENG Jianwen2;FENG Benzhe1;OU Yi1;FENG Hutian1   

  1. 1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,210094
    2.Guangdong Kate Precision Machinery Corporation,Jiangmen,Guangdong,529100
  • Online:2021-09-25 Published:2021-10-14

滚动直线导轨副的滚道中心距误差与承载性能的关系

梁医1;王旭东1;王晓艺1;冯健文2;冯本哲1;欧屹1;冯虎田1   

  1. 1.南京理工大学机械工程学院,南京,210094
    2.广东凯特精密机械有限公司,江门,529100
  • 通讯作者: 王旭东(通信作者),男,1994年生,硕士研究生。研究方向为导轨副互换性、零部件加工质量管控技术。E-mail:WangXuDong4219@ 163.com。
  • 作者简介:梁医,女,1974年生,副教授。研究方向为精密机械测试测量、摩擦磨损与润滑、机械优化设计等。发表论文35篇。 E-mail:liangyi@mail.njust.edu.cn。
  • 基金资助:
    国家科技重大专项(2019ZX0401001-005);
    国家自然科学基金(51405233)

Abstract: Static stiffness and friction, as the key load-bearing performance indicators of rolling linear guide pairs, affected the motion accuracy and operation performance directly. Based on Hertz contact theory, a model of raceway center distance errors, the friction forces and static stiffness of the guide rail pairs was established. The theoretical model and controlled variable tests were combined to analyze the influences of the center distance errors for guide rail raceway, slider raceway and ball interference on the bearing performance for the guide rail pairs. The friction forces and static stiffness under different errors of the raceway center distance were compared and analyzed. The results show that the relative errors of static stiffness are as 2.46%~8.20%, and the relative errors of friction are as 0.42%~11.33%. The theoretical simulation values and the experimental values are in good agreement. 

Key words: rolling linear guide pair, raceway center distance, error, friction force, static stiffness

摘要: 静刚度和摩擦力作为导轨副关键承载性能指标,直接影响导轨副的运动精度及工作状态。基于赫兹接触理论,建立了滚道中心距误差与导轨副摩擦力和静刚度的模型,并结合理论计算模型与控制变量试验研究了导轨、滑块滚道中心距误差及滚珠过盈量对承载性能的影响规律,对比分析了滚道中心距不同误差情况下的摩擦力和静刚度。研究结果表明,静刚度相对误差为2.46%~8.20%,摩擦力相对误差为0.42%~11.33%。理论仿真值和试验实测值的一致性较好。

关键词: 滚动直线导轨副, 滚道中心距, 误差, 摩擦力, 静刚度

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