Method of manufacturing fluid bearing apparatus and spindle motor including press working a cylindrical inner surface provided with a plating layer
US9595290B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2015 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Apr 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/088
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.