| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a dynamic pressure-type bearing device, which sufficiently increases peripheral velocity when a shaft member, a component of a dynamic pressure-type bearing device, is ground, and suppresses sway in rotation to improve grinding efficiency, working efficiency, and quality. SOLUTION: The axis member 2 that is the component of the dynamic pressure-type bearing device 1 is flat contact supported at both ends in the axial direction by a pair of plate members 11, 12 and while it is rotated around the axis, and the outer peripheral surface is cut by a hone 14 while supporting the peripheral surface of the shaft member 2a in the shaft member 2 by a support member 13. A release member 11 is formed in a predetermined region of the rotation central section of the contact surface of at least a plate member 11 that is plane contacted with a flange section 2b of the shaft member 2. In addition, a contact portion 11x to the flange section 2b of the plate member 11 is elastically supported by an elastic member 11y. COPYRIGHT: (C)2007,JPO&INPIT
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