A High-Speed Precision Air-Bearing Spindle Controlled by Active Aerodynamic Bearing

-Some Improvements in its Mechanism-

Abstract

For satisfying the demand for a high-speed precision tool spindle used in the precision machining with small diameter of tools, we proposed a hybrid air-bearing spindle employing aerostatic bearings and an active aerodynamic bearing that suppresses the spindle vibration. In the present paper, the effect of some improvements in the mechanism such as the driving motor or the aerodynamic bearing on the performance of the hybrid spindle is discussed.