METHOD OF MANUFACTURING FLUID BEARING APPARATUS AND SPINDLE MOTOR INCLUDING PRESS WORKING A CYLINDRICAL INNER SURFACE PROVIDED WITH A PLATING LAYER

摘要

A method of manufacturing a fluid bearing apparatus includes plating a metallic base material including a cylindrical base material inner circumferential surface, and pressing by bringing a contact portion of a pressing member into contact with a plating layer on the base material inner circumferential surface in the plating step. At least a portion of the pressing member including the contact portion has a Young's modulus equal to or greater than a Young's modulus of the base material. In the pressing step a surface of the plating layer is smoothened without causing a plastic deformation of the base material by bringing the pressing member into contact with the plating layer.

主权项

1. A method of manufacturing a fluid bearing apparatus including a plated bearing member, the method comprising the steps of:
a) plating a metallic base material including a cylindrical base material inner circumferential surface to define a plating layer on the base material inner circumferential surface; and b) bringing a contact portion of a pressing member into contact with the plating layer after step a); wherein at least a portion of the pressing member including the contact portion has a Young's modulus equal to or greater than a Young's modulus of the base material; and in step b), by bringing the pressing member into contact with the plating layer, a surface of the plating layer is smoothened without causing plastic deformation of the base material.