METHOD AND DRIVE-OUT DEVICE FOR DRIVING OUT A BLADE

摘要

The invention relates to a method for driving out a blade (2), the blade root (3) of which is held in an elongated receiving groove (4) of a wheel disc (5) arranged on a stacked rotor. The method has the following steps: a) providing a drive-out device (1) which has a drive-out punch (15) that is actuated via a hydraulic cylinder (9); b) positioning the drive-out device (1) between two adjacent wheel discs (5) of the rotor such that a longitudinal axis of the drive-out punch (15) is flush with the receiving groove (4) of the blade (2) to be driven out; c) adjusting a maximum pressure (pmax) which can be applied to the hydraulic cylinder (9); d) extending the drive-out punch (15) such that the drive-out punch (15) presses against the blade root (3) of the blade (2) to be driven out with increasing pressure; e) reducing the pressure as soon as the pressure has reached the maximum pressure (pmax); and f) cyclically repeating the steps d) and e) until the blade (2) has been removed from the receiving groove (3). The invention further relates to a drive-out device (1).