고경도 재료의 가공을 위한 초고속화 소형 에어스핀들 개발

It is necessary to secure the technology of design and manufacturing of high speed precision spindle for improving the quality of dental parts and attaining the technical level of advanced industrial countries. The aim in this paper is designing and manufacturing of high speed rotor and bearing system which runs over 300,00rpm. Finally, after evaluating the driving system, the ultra high speed rotor-bearing system runs over 300,000rpm is designed and manufactured.