吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (2): 458-465.doi: 10.13229/j.cnki.jdxbgxb20211106

• 车辆工程·机械工程 • 上一篇    

基于竞争失效模型的滚珠丝杠副可靠性设计建模

刘璐1,2(),周华西1,2,陈传海3,4,龚梦辉1,2,冯虎田1,2,周长光1,2()   

  1. 1.南京理工大学 机械工程学院，南京 210094
    2.数控机床功能部件性能测试评价与可靠性技术重点实验室，江苏 苏州 215600
    3.吉林大学 数控装备可靠性教育部重点实验室，长春 130022
    4.吉林大学 机械与航空航天工程学院，长春 130022
  • 收稿日期:2021-10-26 出版日期:2022-02-01 发布日期:2022-02-17
  • 通讯作者: 周长光 E-mail:liu_lu@njust.edu.cn;zhoucg@njust.edu.cn
  • 作者简介:刘璐（1987-），女，助理研究员，硕士.研究方向：滚动功能部件.E-mail：liu_lu@njust.edu.cn
  • 基金资助:
    国家自然科学基金项目(51905274);国家重大专项项目(2018ZX040039001);吉林大学数控装备可靠性教育部重点实验室开放基金项目(202105)

Reliability design model of ball screws based on competition failure

Lu LIU1,2(),Hua-xi ZHOU1,2,Chuan-hai CHEN3,4,Meng-hui GONG1,2,Hu-tian FENG1,2,Chang-guang ZHOU1,2()   

  1. 1.Department of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094，China
    2.Key Laboratory of Performance Test Evaluation and Reliability Technology for Functional Components of CNC Machine Tools，Suzhou 215600，China
    3.Key Laboratory of CNC Equipment Reliability，Ministry of Education，Jilin University，Changchun 130022，China
    4.College of Mechanical and Aerospace Engineering，Jilin University，Changchun 130022，China
  • Received:2021-10-26 Online:2022-02-01 Published:2022-02-17
  • Contact: Chang-guang ZHOU E-mail:liu_lu@njust.edu.cn;zhoucg@njust.edu.cn

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摘要：

以双螺母预紧滚珠丝杠副为研究对象，分析其失效机理，建立了性能退化失效与疲劳点蚀失效共存状态下的竞争失效模型。综合考虑滚珠直径、滚道半径、接触角、摩擦因数、运行速度等结构参数和使用参数与可靠性指标之间的关系，建立了滚珠丝杠副可靠性设计的数学模型，提出了滚珠丝杠副可靠性定量设计的方法，并通过样本分析验证了该方法的有效性。

关键词: 滚珠丝杠副, 可靠性设计建模, 疲劳失效, 竞争失效

Abstract:

This study presents a competitive failure model considering performance degradation failure and fatigue pitting failure. Considering the relationship among the reliability and structural parameters about diameter of the ball， radius of the raceway， contact angel and friction coefficient etc.， the reliability design model is established， and the reliability quantitative design method is proposed.

Key words: ball screws, reliability design model, fatigue failure, competition failure

中图分类号: 

  • TH165

图1

双螺母滚珠丝杠副受力分析"

图2

丝杠和螺母滚道应力循环圈数示意图"

图3

滚珠丝杠副中左、右螺母的载荷-位移关系图"

表1

试验用滚珠丝杠副参数表"

参数数值
滚珠直径Db/mm5.953
节圆直径Dm/mm40
导程角γ/（°）4.55
接触角/（°）45
导程Ph/mm10
初始预紧力/N2881
施加载荷/N4500

图4

滚珠丝杠副预紧力退化"

图5

滚珠丝杠副可靠度曲线"

图6

滚珠直径对滚珠丝杠副运行500万转时可靠度影响"

图7

接触角对滚珠丝杠副运行500万转时可靠度影响"

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