多孔質動圧スラスト・ラジアル複合軸受における非定常時潤滑特性の実験的研究（複合軸受における軸起動時の軸心軌跡挙動についての一考察）

概要

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This study proposes the combinations of some hydrodynamic shapes formed on the end or the annular surface of oil impregnated sintered porous bearing as a DC spindle motors bearing system. Hydro Wave Bearing or Pump In as a thrust hydrodynamic shape, and Herring Bone (I&II), Three Lobed Type or Sleeve as a radial hydrodynamic shape were proposed, and the total of eight kinds of combinations were produced as thrust-radial coupled bearing. It examines to optimize the hydrodynamic shape combination experimentally as thrust-radial coupled bearing by measuring the lubrication characteristics. This research report is especially referred to the experimental examination for Settling Time, Lissajous Curve diagram or Shaft Whirling by measuring the Time History Waveform of shaft such as the lubrication characteristics under unsteady shaft starting condition.