Research on boundary slip of hydrostatic lead screw under different driving modes

Abstract The flow state of oil film in the hydrostatic lead screw directly affects the transmission performance of the screw pair. The static and dynamic characteristics of a new type of double driven hydrostatic screw-nut pair (DDHSNP) are studied under different motion modes. The boundary conditio...

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Autores principales:	Yandong Liu, Xianying Feng, Yanfei Li, Jiajia Lu, Zhe Su
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/724d0e0bdc2b4c94aaccf0a5a9daccdc
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spelling	oai:doaj.org-article:724d0e0bdc2b4c94aaccf0a5a9daccdc2021-11-21T12:25:06ZResearch on boundary slip of hydrostatic lead screw under different driving modes10.1038/s41598-021-01524-82045-2322https://doaj.org/article/724d0e0bdc2b4c94aaccf0a5a9daccdc2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01524-8https://doaj.org/toc/2045-2322Abstract The flow state of oil film in the hydrostatic lead screw directly affects the transmission performance of the screw pair. The static and dynamic characteristics of a new type of double driven hydrostatic screw-nut pair (DDHSNP) are studied under different motion modes. The boundary condition of navier slip model is introduced into the lubricating mathematical model of DDHSNP, and the influences of boundary slip on the axial bearing capacity, axial stiffness and damping coefficient in micro scale are researched by finite difference method. The results show that when the motor runs at high speed (the rotating speed range of the screw and nut driven motor is 1000–9000 rpm), the existence of boundary slip leads to a improvement of the axial bearing capacity and stiffness coefficient of DDHSNP in the case of single-drive operation and dual-drive differential feed (the range of rotation difference is 10–100 rpm), which is more obvious under the single-drive mode. The increase rate of stiffness coefficient induced by boundary slip is much larger than that of bearing capacity. In addition, the boundary slip has little effect on the damping coefficient of DDHSNP in either single drive operation or dual drive differential operation.Yandong LiuXianying FengYanfei LiJiajia LuZhe SuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-21 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yandong Liu Xianying Feng Yanfei Li Jiajia Lu Zhe Su Research on boundary slip of hydrostatic lead screw under different driving modes
description	Abstract The flow state of oil film in the hydrostatic lead screw directly affects the transmission performance of the screw pair. The static and dynamic characteristics of a new type of double driven hydrostatic screw-nut pair (DDHSNP) are studied under different motion modes. The boundary condition of navier slip model is introduced into the lubricating mathematical model of DDHSNP, and the influences of boundary slip on the axial bearing capacity, axial stiffness and damping coefficient in micro scale are researched by finite difference method. The results show that when the motor runs at high speed (the rotating speed range of the screw and nut driven motor is 1000–9000 rpm), the existence of boundary slip leads to a improvement of the axial bearing capacity and stiffness coefficient of DDHSNP in the case of single-drive operation and dual-drive differential feed (the range of rotation difference is 10–100 rpm), which is more obvious under the single-drive mode. The increase rate of stiffness coefficient induced by boundary slip is much larger than that of bearing capacity. In addition, the boundary slip has little effect on the damping coefficient of DDHSNP in either single drive operation or dual drive differential operation.
format	article
author	Yandong Liu Xianying Feng Yanfei Li Jiajia Lu Zhe Su
author_facet	Yandong Liu Xianying Feng Yanfei Li Jiajia Lu Zhe Su
author_sort	Yandong Liu
title	Research on boundary slip of hydrostatic lead screw under different driving modes
title_short	Research on boundary slip of hydrostatic lead screw under different driving modes
title_full	Research on boundary slip of hydrostatic lead screw under different driving modes
title_fullStr	Research on boundary slip of hydrostatic lead screw under different driving modes
title_full_unstemmed	Research on boundary slip of hydrostatic lead screw under different driving modes
title_sort	research on boundary slip of hydrostatic lead screw under different driving modes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/724d0e0bdc2b4c94aaccf0a5a9daccdc
work_keys_str_mv	AT yandongliu researchonboundaryslipofhydrostaticleadscrewunderdifferentdrivingmodes AT xianyingfeng researchonboundaryslipofhydrostaticleadscrewunderdifferentdrivingmodes AT yanfeili researchonboundaryslipofhydrostaticleadscrewunderdifferentdrivingmodes AT jiajialu researchonboundaryslipofhydrostaticleadscrewunderdifferentdrivingmodes AT zhesu researchonboundaryslipofhydrostaticleadscrewunderdifferentdrivingmodes
_version_	1718419013066817536

Research on boundary slip of hydrostatic lead screw under different driving modes

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