Invention Application
- Patent Title: METHOD OF MANUFACTURING FLUID BEARING APPARATUS AND SPINDLE MOTOR INCLUDING PRESS WORKING A CYLINDRICAL INNER SURFACE PROVIDED WITH A PLATING LAYER
- Patent Title (中): 制造流体轴承装置和主轴电机的方法,包括压制工作一个镀铝层的圆柱形内表面
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Application No.: US14690583Application Date: 2015-04-20
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Publication No.: US20160125896A1Publication Date: 2016-05-05
- Inventor: Yoichi SEKII , Asami ITO
- Applicant: Nidec Corporation
- Priority: JP2014-224040 20141104
- Main IPC: G11B5/10
- IPC: G11B5/10

Abstract:
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.
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