A Study on the Oil-Jet Lubrication Characteristics of a Motor-Integrated High-Speed Spindle System with $\phi$65mm$\times$25,000rpm

오일제트윤활방식의 25,000rpm급 모터내장형 고속주축계의 윤활특성에 관한 연구

In this study, a motor-integrated high-speed spindle system with $\psi$65mm $\times$ 25,000rpm is developed by introducing the oil-jet lubrication method, ceramic angular contact ball bearings, a built-in motor and so on. And oil-jet lubrication experiments fur evaluating the system performance are performed under various operation conditions. Especially, in order to establish the oillet lubrication conditions related to the development of a high-speed spindle system, the effects of oil supply rate and rotational spindle speed are investigated on the temperature rise, temperature distribution, motor current and so on.