Surface profiling method of the disk cutter of the female rotor from the screw compressor component

Abstract

The screw compressor rotors are bounded by cylindrical helical surfaces, with constant pitch. The generation of these surfaces is possible to be done using disk cutter, whose peripheral surfaces are revolution surfaces. This paper proposes a method and an algorithm for profiling primary surfaces of the disk cutter, mutually enveloping with the helical surfaces of the rotor of the screw compressor. The algorithm proposes the substitution of the transverse profiles of the rotor by Bézier polynomials.