A multi-roller static model of the planetary roller screw mechanism considering load sharing

被引：25

作者：

Fu, Xiaojun ^{[1
]}

Li, Xin ^{[1
]}

Ma, Shangjun ^{[1
]}

Gerada, David ^{[2
]}

Liu, Geng ^{[1
]}

Gerada, Christopher ^{[2
]}

机构：

[1] Northwestern Polytech Univ, Shaanxi Engn Lab Transmiss & Controls, Xian 710072, Peoples R China

[2] Univ Nottingham, Sch Elect & Elect Engn, Nottingham NG7 2RD, England

来源：

TRIBOLOGY INTERNATIONAL | 2022年 / 173卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Planetary roller screw mechanism; Elastic deformation; Axial clearance; Load sharing; CONTACT;

D O I：

10.1016/j.triboint.2022.107648

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller spring system. The proposed model is validated by comparing the results from a finite element model. The load sharing, load distribution and elastic deformation behaviors of a PRSM under different part position errors and thread index errors are analyzed. The results show that load sharing is sensitive to the position errors of the screw and nut while being fairly insensitive to those of rollers. Part position errors and thread index errors have a great influence on the stiffness of the PRSM.

引用

页数：15

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