Patent ID: 6786699
Filing Date: 2004-09-07
Classification: B23P,F01D,F05D,Y10T

Abstract:
In a turbine having an arcuate groove forming a generally dovetail shape in a circumferential direction forming part of a rotatable rotor or a stationary carrier and a plurality of airfoils each having a base generally complementary in shape to said dovetail-shaped groove and wherein the airfoil bases are slidable circumferentially along the groove with a radial clearance for stacking the airfoils in an arcuate array upon installation thereof in said groove, a method of finally radially positioning the airfoils relative to the groove, comprising the steps of:(a) displacing each airfoil by sliding the airfoil base along the groove to a substantially final circumferential location within the groove; (b) forming a recess in one of said airfoil bases and a bottom of a groove; (c) inserting generally cylindrical pins having a flat side along a length thereof into the recess with the flat sides of the pins facing toward another of the airfoil bases and the bottom of the groove; and d) applying a tool to an end of each pin and driving the tool in a generally radial directions along the recess between the bottom of the groove and the base of the airfoil.