滚动直线导轨副的滚道中心距误差与承载性能的关系  

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

作　　者：梁医[1] 王旭东[1] 王晓艺 冯健文 冯本哲 欧屹[1] 冯虎田[1] LIANG Yi;WANG Xudong;WANG Xiaoyi;FENG Jianwen;FENG Benzhe;OU Yi;FENG Hutian(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,210094;Guangdong Kate Precision Machinery Corporation,Jiangmen,Guangdong,529100)

机构地区：[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

出　　处：《中国机械工程》2021年第18期2254-2261,2267,共9页China Mechanical Engineering

基　　金：国家科技重大专项(2019ZX0401001-005);国家自然科学基金(51405233)。

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。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.

关 键 词：滚动直线导轨副 滚道中心距 误差 摩擦力 静刚度 

分 类 号：TH132.2[机械工程—机械制造及自动化] TH161.1