Regular and Reverse Rotation Type Gas-Lubricated Spherical Grooved Bearing

摘要

The purpose of the paper is to present findings on creating a regular and reverse rotation-type gas-lubricated spherical grooved bearing. A gas-lubricated spherical grooved bearing can receive both an axial load and a radial load at the same tune and adjust the axis center automatically. Several studies on the gas-lubricated spherical grooved bearing have been reported. However, such conventional studies investigated only one rotational direction. In previous research the authors proposed a new idea for journal, thrust circular-disk and conical type bearings to rotate both regular and reverse side. As a result of such previous studies, proposed idea shows satisfactory property as a bearing. In this paper, an optimal regular and reverse rotation-type gas-lubricated spherical grooved bearing is developed in referring to bearing parameters. Our approach utilized the narrow groove theory. We concluded that the present new type spherical bearing generated the axial and radial characteristics at both regular and reverse rotations, and that radial bearing characteristics were almost a half of conventional one direction-type spherical grooved bearing. Finally we obtained the optimal bearing parameters by optimizing independently the bearing characteristics, such as load capacity in axial direction, load capacity in radial direction, and mass of the stable limit.