An analysis of a thermally affected high-speed spindle with angular contact ball bearings

被引：0
|
作者：
Truong, Dinh Sy [1 ,2 ]
Kim, Byung-Sub [2 ]
Ro, Seung-Kook [2 ]
机构：
[1] Department of Nano-Mechatronics, University of Science and Technology (UST), 217 Gajeong-Ro, Yuseong-Gu, Daejeon,34113, Korea, Republic of
[2] Department of Ultra Precision Machines and Systems, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon,34103, Korea, Republic of
来源：
Tribology International | 2021年 / 157卷
基金：
新加坡国家研究基金会;
关键词：
Thermal expansion - Stiffness - Natural frequencies - Stiffness matrix;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper discusses thermal effects on bearing stiffness, and consequently, the natural frequencies of a high-speed spindle system. Heat is generated due to friction torque at the contacts between the raceways and the balls of the angular contact ball bearings. In our experimental spindle system, the heat sources included six bearings and a built-in motor. Five-by-five bearing stiffness matrices were computed based on the thermal-mechanical parameters. The stiffness matrices were used as inputs for a finite element model generated in the ANSYS Workbench environment, in which the bearings were simulated as bushing joints, to compute frequency response numerically. The simulated results showed that the third natural frequencies decreased with increasing temperature and were in good agreement with the experimentation. © 2021 Elsevier Ltd
引用
收藏
相关论文
共 50 条
12345