Patent ID: 6938447
Filing Date: 2005-09-06
Classification: B21D,B23P,F01D,Y10T

Abstract:
1. An apparatus for correcting deformation of a gas turbine blade comprising: a stationary die fixed to a backside of a tip shroud of a gas turbine blade to hold a back surface thereof when deformation of the tip shroud of a gas turbine blade is corrected; a pressing die pressing a front surface of the tip shroud so as to press the tip shroud of the blade between the pressing die and the stationary die; a supporting mechanism for supporting the stationary die with respect to the pressing die; a hydraulic drive mechanism connected to the pressing die and including pressure generator for pressing the pressing die against the tip shroud held by the stationary die; and a control device operatively connected to the hydraulic drive mechanism and adapted to set and indicate a driving condition on a basis of deformation correction data preliminarily stored in the control device, wherein the surface of the stationary die contacting the tip shroud of the blade has a shape subtracting a return amount from a shape of the tip shroud after the correction of the deformation, and a surface of the pressing die contacting the tip shroud has a shape adding the return amount to the shape of the tip shroud after the correction of the deformation.