ISSN   1004-0595

CN  62-1095/O4

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解志杰, 张传伟, 薛其河, 王黎钦, 古乐, 马欣新, 王非. 行星滚柱丝杠动态摩擦力矩和传动效率分析[J]. 摩擦学学报, 2019, 39(4): 489-496. DOI: 10.16078/j.tribology.2018176
引用本文: 解志杰, 张传伟, 薛其河, 王黎钦, 古乐, 马欣新, 王非. 行星滚柱丝杠动态摩擦力矩和传动效率分析[J]. 摩擦学学报, 2019, 39(4): 489-496. DOI: 10.16078/j.tribology.2018176
XIE Zhijie, ZHANG Chuanwei, XUE Qihe, WANG Liqin, GU Le, MA Xinxin, WANG Fei. Analysis of Dynamic Friction Torque and Transmission Efficiency of Planetary Roller Screw[J]. TRIBOLOGY, 2019, 39(4): 489-496. DOI: 10.16078/j.tribology.2018176
Citation: XIE Zhijie, ZHANG Chuanwei, XUE Qihe, WANG Liqin, GU Le, MA Xinxin, WANG Fei. Analysis of Dynamic Friction Torque and Transmission Efficiency of Planetary Roller Screw[J]. TRIBOLOGY, 2019, 39(4): 489-496. DOI: 10.16078/j.tribology.2018176

行星滚柱丝杠动态摩擦力矩和传动效率分析

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

  • 摘要: 针对行星滚柱丝杠摩擦力矩和传动效率随丝杆转速变化而变化,考虑润滑油黏滞、滚柱自旋滑动和螺纹接触点差动滑动产生的摩擦阻力,基于拉格朗日方法建立了行星滚柱丝杠机构动力学模型,计算了其摩擦力矩和传动效率,分析了负载和丝杆角加速度对机构动态摩擦力矩、瞬态传动效率和综合传动效率的影响. 研究结果表明:行星滚柱丝杠摩擦力矩随螺纹接触点相对滑动速度增大而增大;非稳态运行阶段润滑油黏滞和自旋滑动是产生摩擦力矩的主要因素;行星滚柱丝杠在大载荷运行时传动效率较高,丝杆加速时间越短其综合传动效率越高.

     

    Abstract: 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.

     

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