한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)
- 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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- Pages.283-284
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- 2002
A Study on Ferro Fluid Dynamic Bearing Spindel Characteristics by High Frequency Vibration Ssystem
- Miwa, M. (Department of Opto-Mechatronics, Faculty of System Engineering, Wakayama University) ;
- Harita, H. (Department of Opto-Mechatronics, Faculty of System Engineering, Wakayama University) ;
- Nishigami, T. (Department of Opto-Mechatronics, Faculty of System Engineering, Wakayama University) ;
- Kaneko, R. (Department of Opto-Mechatronics, Faculty of System Engineering, Wakayama University) ;
- Unozawa, H. (Ferotec Corporation)
- 발행 : 2002.10.21
초록
Ball bearings (BB) are generally used in spindle of‘ disk drives at present, but they have been known that BB generate high frequency vibration. Fluid dynamic bearings (FDB) having high-rotational accuracy and small vibration characteristics have been developed as next generation spindles. Especially. a ferro fluid bearing (FFB) spindle has the advantage to prevent leakage and dispersion of lubricating oil using a ferro seal. In this study, we measured damping characteristics and frequency characteristics of these bearing spindles using a high-frequency vibration base. High frequency excitation was added to these bearing spindles mounted on the vibration base, and we proved that FFB and FDB spindles have effective damping.