Patent ID: 7015411

Claim:
A spark erosion system for removing connection elements from a structure, said system comprising: a drill head; a rotational drive for rotating a tube electrode said rotational drive arranged in a linearly movable application carriage; a positioning system for moving said tube electrode wherein said tube electrode has an interior which serves as a guiding means for guiding a dielectric to a surface of a first connection element to be detached, said surface facing an interior portion of the system; an energy unit and an electric circuit providing a voltage between the tube electrode and the connection element to be detached in order to implement spark erosion, wherein said positioning system includes a sensor on said drill head for determining a position of the drill head relative to the connection element; and at least one video camera including a control unit and an energy processing unit for positioning the drill head and for controlling the erosion process wherein the control unit includes a laser spacing sensor and an erosion control unit for controlling the position of the drill head relative to a connection surface by means of a position of the application carriage as well as controlling the signals transmitted to the energy unit for determining pulse durations, average amplitude levels and amplitude maxima and pulse separations of an erosion current.