| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a bearing ring capable of solving problems that it is hard to design and manufacture the fluid dynamic bearing or to exert required functions as a processing method of the fluid dynamic bearing receives restriction on numbers of herringboned grooves, thickness of wall, and accuracy in processing. SOLUTION: This dynamic bearing manufacturing method using a processing tool having at least one protruding pattern on its outer wall, to a bearing having an axial hole, comprises a step of disposing and positioning the processing tool into the axial hole of the bearing, a step of transferring and printing the protruding pattern of the processing tool to a contact position of an inner wall of the bearing by bringing the processing tool into contact with the inner wall of the bearing, a step of rotating the processing tool at a first rotation speed and rotating the bearing at a second rotation speed, and a step of forming at least one concave pattern corresponding to the protruding pattern, to the inner wall of the bearing. COPYRIGHT: (C)2007,JPO&INPIT |
