This invention discloses a fixture and method for axial
interference fit installation of a rotating guide vane and a low-pressure
turbine disk. The fixture includes a base, a support ring, a positioning ring, a first screw, a pressure ring, a pressure plate, an anti-rotation plate, a pin, a top pin, a first insert pin, a second insert pin, a second screw, a centering ring, an elastic
retaining ring, a one-way
thrust bearing, and a third screw. During
interference fit installation, the low-pressure
turbine disk is first fixed using the base, support ring, positioning ring, and anti-rotation plate. Then, the rotating guide vane is placed on the low-pressure
turbine disk. Next, the first screw, pressure ring, pressure plate, and top pin complete the non-
interference fit assembly between the rotating guide vane boss and the low-pressure turbine disk boss. The pressure ring then drives the rotating guide vane to rotate by an angle. When the through hole of the rotating guide vane boss aligns with the groove of the low-pressure turbine disk boss as observed through the top pin hole on the pressure ring, the pin is inserted to complete the interference fit
assembly. This invention can complete the axial interference fit
assembly of the rotating guide vane and the low-pressure turbine disk in one step, and the rotating guide vane is not easily deformed.