Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Feeding Characteristics of Ball Guide in High Speed Spindle's Bearing Preload Units

고속 주축 베어링용 예압장치의 볼 가이드 이송특성

  • 이찬홍 (한국기계연구원 초정밀기계시스템연구실)
  • Received : 2011.10.24
  • Accepted : 2011.11.22
  • Published : 2011.12.15
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Abstract

The Bearing preload units are used for stable rotational movements of high speed spindles. The feeding mechanism of the preload unit is important to prevent overheat of bearings and to keep constant bearing load under thermal deformation of spindle unit. In this study, ball slide guide and ball bush as feeding mechanism of preload unit are selected. The maximum static friction force, radial stiffness and damping ratio of ball slide guide with ball load, ball number and ball size are widely investigated. In conclusion, the surface of ball slide guide must be heat treated to reduce static friction force. The number and size of ball are increased to control sensitive bearing preload force.

Keywords

References

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