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

Fu, Xiaojun; Li, Xin; Ma, Shangjun; Gerada, David; Liu, Geng; Gerada, Christopher

Abstract

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.

Citation

Fu, X., Li, X., Ma, S., Gerada, D., Liu, G., & Gerada, C. (2022). A multi-roller static model of the planetary roller screw mechanism considering load sharing. Tribology International, 173, Article 107648. https://doi.org/10.1016/j.triboint.2022.107648

• Journal Article Type: Article
• Acceptance Date: May 17, 2022
• Online Publication Date: May 26, 2022
• Publication Date: 2022-09
• Deposit Date: Nov 26, 2024
• Journal: Tribology International
• Print ISSN: 0301-679X
• Electronic ISSN: 1879-2464
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 173
• Article Number: 107648
• DOI: https://doi.org/10.1016/j.triboint.2022.107648
• Public URL: https://nottingham-repository.worktribe.com/output/42218760
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0301679X22002213?via%3Dihub