レーザスキャナ用傾斜溝付動圧型空気ジャーナル軸受に関する研究

抄録

Aerodynamic journal bearings have been successfully applied to high speed laser scanner motors. In these devices, herringbone grooved aerodynamic bearings have been usually used due to their high stiffness and excellent stability at high speeds. However, there is a disadvantage that it is slightly difficult to make herringbone grooves on the shaft surface, which raises the manufacturing cost. In this paper, a newly designed aerodynamic journal bearing with diagonal grooves is proposed which is much easier to make than the conventional herringbone bearings. The static and dynamic characteristics of the proposed bearing are investigated theoretically and experimentally.