Patents Assigned to Gebruder Heller Machinenfabrik GmbH
  • Method of machining winding slots of generator rotors
    Patent number: 4137823
    Abstract: Winding slots in generator rotors which are cut out of the solid rotor block by means of a side mill cutter are finish machined by means of a tool having a plurality of cutting edges disposed linearly one behind the other and displaced with respect to each other by one depth of cut which is guided repetitively, linearly over the slot wall with the depth the tool extends into the slot as well as the depth the tool penetrates vertically into the slot walls being controlled by copying means.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: February 6, 1979
    Assignee: Gebruder Heller Machinenfabrik GmbH
    Inventors: Kurt Bauml, Otto C. Gunsser, Rudolf K. Lohse