A comprehensive sliding wear prediction method for planetary roller screw mechanism

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2024-08-10 DOI:10.1016/j.wear.2024.205536

Mingcai Xing , Shuo Liu , Yi Cui , Jinquan Xu , Zhaohui Xu , Lining Gao

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Abstract

The thread-pairs wear has a significant role in the transmission accuracy, operational stability and service life of planetary roller screw mechanism (PRSM). Nevertheless, the previous literatures still lack the investigation on the wear evolution of roller, nut and screw. Hence, an accumulative wear depth (AWD) prediction model is proposed for PRSM with reciprocating motion. The presented model is validated by the measured wear phenomena of thread pairs and the experimental results in the literature. The equivalent sliding wear experiment of PRSM is designed and the sliding wear coefficient of PRSM material is obtained by the equivalent sliding wear experiment. Considering the thread profile error caused by AWD of roller, nut and screw, the load distribution (LD) and sliding velocities on screw-roller (SR) and nut-roller (NR) sides are calculated. More importantly, the interactions between the AWD, LD and sliding velocity are investigated. Furthermore, the effects of axial load on the AWD, sliding velocities in contact regions and load distribution coefficient are analyzed.

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行星滚柱丝杠机构的综合滑动磨损预测方法

螺纹对磨损对行星滚柱丝杠机构（PRSM）的传动精度、运行稳定性和使用寿命具有重要影响。然而，以往的文献仍缺乏对滚子、螺母和螺杆磨损演变的研究。因此，本文针对往复运动的行星滚柱丝杠机构提出了累积磨损深度（AWD）预测模型。通过测量螺纹对的磨损现象和文献中的实验结果，对所提出的模型进行了验证。设计了 PRSM 的等效滑动磨损实验，并通过等效滑动磨损实验获得了 PRSM 材料的滑动磨损系数。考虑到滚子、螺母和螺杆的 AWD 导致的螺纹轮廓误差，计算了螺杆-滚子（SR）和螺母-滚子（NR）两侧的载荷分布（LD）和滑动速度。更重要的是，研究了 AWD、LD 和滑动速度之间的相互作用。此外，还分析了轴向载荷对 AWD、接触区域滑动速度和载荷分布系数的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.