Modeling and Reliability Global Sensitivity Analysis of Motorized Spindles Considering Thermal Errors

被引：0
作者：
Huang, Xian-Zhen [1 ,2 ]
Yu, Rui [1 ]
Jiang, Zhi-Yuan [1 ]
Rong, Zhi-Ming [3 ]
机构：
[1] School of Mechanical Engineering & Automation, Northeastern University, Shenyang
[2] Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China, Northeastern University, Shenyang
[3] Applied Technology College, Dalian Ocean University, Dalian
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2024年 / 45卷 / 05期
关键词：
finite element analysis; global sensitivity; Kriging model; motorized spindle; reliability; thermal characteristics;
D O I：
10.12068/j.issn.1005-3026.2024.05.009
中图分类号：
学科分类号：
摘要：
Taking the motorized spindle of computer numerical control machine tools as the research object，the influence of its axial thermal elongation on the reliability of the motorized spindle is explored. The Svenska Kullager‑Fabriken （SKF） friction torque model is used to analyze the heat generation of the bearing. The convective heat transfer coefficient is set as the boundary heat dissipation condition. The finite element coupling model of thermal analysis is established to solve the temperature and axial thermal elongation distribution of the spindle. The finite element model is compared with the experimental results to verify the accuracy of the established finite element model. Considering the influence of random factors，the reliability analysis model of spindle thermal deformation is established，and the reliability is solved by the Kriging model. Finally，the global sensitivity analysis of the thermal error reliability of the motorized spindle is carried out. The results show that the rotational speed and cooling water flow have a great influence on the reliability，and the axial force and radial force have little influence on the reliability. © 2024 Northeast University. All rights reserved.
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页码：675 / 682
页数：7
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