Patent ID: 8850703
Filing Date: 2014-10-07
Classification: B23C,B23P,F01D,F04D,F05D,Y10T

Abstract:
1. A method for machining blade tips of BLISK type rotor wheels, comprising: machining blade tips of at least one chosen from a rotor wheel and a compressor rotor, the at least one chosen from a rotor wheel and a compressor rotor restrained in a clamping fixture by: orienting a cutting edge of a conical cutter of a rotary cutting tool tangentially to an outside surface of the at least one chosen from the rotor wheel and the compressor rotor; routing the cutting edge on a radially outer surface of one of the blade tips essentially on a centerline of the blade tip, the centerline extending from a leading edge to a trailing edge of the blade tip and bisecting a distance perpendicular to the centerline between opposing suction and pressure sides of the blade tip to follow a curvature of the blade tip from the leading edge to the trailing edge of the blade tip, the routing of the cutting edge on the centerline extending from the leading edge to the trailing edge of the blade tip; introducing a cutting force by the cutting edge onto the blade tip in a stiffest direction of the blade by maintaining the axis of the cutting tool at a 90° angle with respect to the centerline, as viewed in a projection plane tangential to an outside surface of the at least one chosen from the rotor wheel and the compressor rotor, as the cutting edge is moved along the centerline.