Modeling and Analysis of Friction Torque of Ball Screw Considering the Thermal Elastohydrodynamic Lubrication

被引：0
|
作者：
Zhao J. [1 ]
Song X. [1 ]
Jiang H. [1 ]
Lin M. [2 ]
Song L. [3 ]
机构：
[1] School of Mechatronic Engineering, Shandong Jianzhu University, Jinan
[2] School of Mechanical Engineering, Shandong University, Jinan
[3] JIER Machine-Tool Group Co. Ltd., Jinan
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2023年 / 59卷 / 03期
关键词：
ball screw; elastic hysteretic friction; friction torque; sliding friction; thermal elastohydrodynamic lubrication;
D O I：
10.3901/JME.2023.03.176
中图分类号：
学科分类号：
摘要：
In previous studies, the influence of lubrication on friction torque of ball screw is not considered, or the influence of contact elastic hysteresis effect and the sliding friction effect are not considered. The thermal elastohydrodynamic lubrication equation is established based on the contact effect of a single ball. The equations of viscous friction, elastic hysteresis friction and slip friction are established on the basis of considering the lubrication effect. A calculation model of friction torque for ball screw based on the coupling of full ball load distribution and the thermal elastohydrodynamic lubrication is proposed. The coupling relationship among preload, rotational speed and friction torque is established. The experimental results show that when the preload changes from 1 kN to 6 kN, the friction coefficient of the ball screw varies from 0.005 6 to 0.006 5 at low speed (100 r/min). The variation of the friction coefficient increases gradually with the increase of rotational speed, which indicates that it is reasonable to set the measurement speed of no-load friction torque of ball screw as 100 r/min in the international standard DIN ISO3408-3:2006. The accuracy of the friction torque calculation method is verified. © 2023 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
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页码：176 / 188
页数：12
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