Analysis of Dynamic Friction Torque and Transmission Efficiency of Planetary Roller Screw

被引：0
|
作者：
Xie Z. [1 ]
Zhang C. [1 ]
Xue Q. [1 ]
Wang L. [1 ,2 ]
Gu L. [1 ]
Ma X. [1 ]
Wang F. [1 ]
机构：
[1] MIIT Key Laboratory of Aerospace Bearing Technology and Equipment, Harbin Institute of Technology, Harbin, 150001, Heilongjiang
[2] State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150080, Heilongjiang
来源：
Mocaxue Xuebao/Tribology | 2019年 / 39卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Dynamic friction torque; Overall transmission efficiency; Planetary roller screw; Transient transmission efficiency; Unsteady state operation;
D O I：
10.16078/j.tribology.2018176
中图分类号：
学科分类号：
摘要：
As the friction torque and transmission efficiency of planetary roller screw changed with the rotation speed of screw, the dynamic model of planetary roller screw was established based on the Lagrange method considering the frictional resistance due to the lubricating oil viscosity, the roller spin sliding and the differential sliding of the thread contact point. And the friction torque and transmission efficiency were calculated. The influences of load and angle acceleration of screw on the dynamic friction torque, transient transmission efficiency and overall transmission efficiency of the mechanism were analyzed. The results show that the friction torque of the planetary roller screw increased with the relative sliding speed of the thread contact point, and the viscous of the lubricating oil and spin sliding in the unsteady state was the main factor inducing friction torque. The overall transmission efficiency of planetary roller screw increased when it operated with large load and the short acceleration time of the screw. © 2019, Science Press. All right reserved.
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页码：489 / 496
页数：7
相关论文
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