Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Method for repairing a crack in an electromechanical rotor, method for preventing crack growth in the same, electromechanical rotor and rotary electrical machine
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).
Kabushiki Kaisha Toshiba
Y Y Y H Y H Y Y Y B
Y10T Y10T Y10T H02K Y10T H02K Y10T Y10T Y10T B23P
additional additional additional additional additional inventional additional additional additional inventional
Yasuo Koji Hiroaki Ryoji Kazuhiro Kaname Yomei Hideki Toshio Hiromichi
Kabata Matsuyama Koinuma Nagano Saito Hirai Yoshioka Chiba Kitajima Ito