Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
Method for removing a crack in an electromechanical rotor
In a method for removing a crack in an electromechanical rotor, a through-hole penetrating from a side of one of slots adjacent to each other via a rotor core portion to a side of the other slot is formed to include a crack in the rotor core portion occurring to a contact surface with a wedge, in an electromechanical rotor including a plurality of slots formed in an axial direction in an outer peripheral surface of the rotor core portion, a coil housed in the slot, a wedge inserted in an upper portion of the slot to be arranged in the axial direction and holding the coil in the slot, and the crack is removed.
Kabushiki Kaisha Toshiba
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Koji Hiromichi Hideki
Matsuyama Ito Chiba