Method for repairing a crack in an electromechanical rotor, method for preventing crack growth in the same, electromechanical rotor and rotary electrical machine
US7866020B2 · kind B2 · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2006 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | May 31, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49742
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for repairing a crack in an electromechanical rotor (10), including forming a plurality of slots (12) on a periphery of a core portion (11) of an electromechanical rotor (10) along an axial direction thereof; inserting coils into the slots (12), respectively; forming a plurality of wedges for maintaining the coils in the slots (12), respectively; and forming a cut hole (20) at the core portion (11) from an outer surface of the core portion (11) so as to remove at least a deeper area of a crack created at the core portion (11) at a contacting surface between the corresponding wedge and the corresponding slot (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.