Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Study on the Frictional Torque in the Angular Contact Ball Bearing for Machine Tool Spindle by Empirical Formula

실험식을 이용한 공작기계 주축용 앵귤러 콘택트 볼 베어링의 마찰토크에 관한 연구

  • Kim, Kang Seok (Department of Precision Engineering, Pusan National University) ;
  • Hwang, Jooho (Advanced Manufacturing Systems Research Division, Korea Institute of Machinery & Materials) ;
  • Lee, Deug Woo (Department of Nano Mechatronics Engineering, Pusan National University) ;
  • Lee, Sang Min (Department of Nano Fusion Technology, Pusan National University) ;
  • Lee, Seung Jun (Interdisciplinary Program in Innovative Manufacturing Engineering, Pusan National University)
  • 김강석 (부산대학교 정밀공학과) ;
  • 황주호 (한국기계연구원 초정밀시스템연구실) ;
  • 이득우 (부산대학교 나노메카트로닉스학과) ;
  • 이상민 (부산대학교 나노융합공학과) ;
  • 이승준 (부산대학교 첨단정밀공학과)
  • Received : 2014.12.15
  • Accepted : 2015.01.17
  • Published : 2015.02.01
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Abstract

Ball and roller bearings are commonly used machine elements for supporting rotating motion about shafts in simple devices including bicycles, in-line skates, and electric motors, as well as in complex machines. Heat is generated by the friction in the bearings, which causes the temperature inside the bearing to increase. If the heat is not appropriately removed from the bearing, elevated temperatures may give rise to premature failure. It is, therefore, important to be able to calculate the temperature in the bearings due to friction.Here, we describe a method to estimate the frictional torque in bearings using an empirical formula developed using a method based on bearing analysis tool and the measured frictional torque in a spindle system. Thermal analysis of the spindle system including the bearings was achieved using the finite element method (FEM), and the bearing temperature was compared with measured data to verify the empirical formula.

Keywords

References

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