Device to press the shaft of a rotor into a stator housing
US7415758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | May 11, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53161
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device to press a rotatably supported shaft of a rotor of a spindle motor for a hard disk drive into a shaft receiving portion of an associated stator housing by means of a first pressing tool acting on the rotor and a second pressing tool acting on the stator housing. A first aligning apparatus for the rotor and a second aligning apparatus for the stator housing are provided. The first and second aligning apparatuses are formed in such a way that they guide the rotor by means of a rotor carrier and the stator housing by means of a stator carrier. The rotor carrier and the stator carrier are exactly aligned with respect to each other during the pressfitting process. The first pressing tool has a first pressing element acting on the shaft of the rotor that is independent of the first aligning apparatus and the second pressing tool has a second pressing element acting on the stator housing that is independent of the second aligning apparatus. The first and second pressing elements abut against the shaft or the stator housing respectively, at the latest at the start of the pressfitting process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.