| KONG Deshun (孔德顺)* **,LYU Linbao*** ****,DUAN Xiaojun*,GAO Xiangsheng*****.[J].高技术通讯(英文),2025,31(3):273~279 |
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| Research and experimental analysis on precision degradation of BSM at low speed ( II) : experimental analysis |
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| DOI：10. 3772 / j. issn. 1006-6748. 2025. 03. 007 |
| 中文关键词: |
| 英文关键词: ball-screw mechanism, dynamics model, test bench, precision degradation, drag torque |
| 基金项目: |
| Author Name | Affiliation | | KONG Deshun (孔德顺)* ** | (*Institute of Standard Metrology, China Academy of Railway Sciences Corporation Limited, Beijing 100081, P. R. China)
(**Beijing Huaheng Technology Corporation Limited, Beijing 100081, P. R. China)
(***Postgraduate Department, China Academy of Railway Sciences, Beijing 100081, P. R. China)
(**** Hefei Railway Logistics Center, China Railway Shanghai Group Corporation Limited, Hefei 230001, P. R. China)
(***** Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, P. R. China) | | LYU Linbao*** **** | | | DUAN Xiaojun* | | | GAO Xiangsheng***** | |
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| 中文摘要: |
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| 英文摘要: |
| The dynamic model of the ball screw mechanism (BSM) in spatial motion, developed in Part I of the study titled ‘ research and experimental analysis on precision degradation of BSM at low speed’, has been validated through a comparison between calculated values and experimentally measured data obtained from a comprehensive ball-screw test bench. In order to study the performance parameters related to the precision degradation characteristics of ball screw under different preloads and speeds, the precision degradation test bench for ball screw is set up. Through the experiment on the ball-screw comprehensive test bench, the drag torque, stroke deviation, acceleration peak value, axial contact stiffness and other parameters of the BSM under different speeds are obtained, and the different preloads are obtained by the drag torque, the changing regularity of which is consistent with the simulation results. A comprehensive analysis of the experimental data reveals that the dynamic characteristics of the ball screw’s spatial motion are significantly influenced by gyroscopic torque effects. By incorporating these parametric effects, the accuracy degradation characteristics of ball screw under different preloads and speeds can be well analyzed. This methodology establishes a technical foundation for investigating ball screw accuracy retention characteristics. |
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