A Rotor Finishing Method in a Screw-Compressor by a Fly Tool : 3rd Report, an Efficient Analysis of Fly Tool and a New Method to Shorten the Machining Time

Abstract

The purpose of this paper is to finish the rotor of a screw-compressor using a fly tool. It is very useful to use a fly tool in the manufacturing of the rotor, but this has not yet been put to practical use. The reason why is as follows : Analysis of a fly tool profile requires complicated calculations, so a large computer is needed. The machining time also requires more than many other conventional methods. So this study deals with the means of solving these problems. To obtain the fly tool profile, a new method is introduced to shorten the calculating time and the memories, using only a personal computer. A new manufacturing method is introduced to shorten the machining time using a fly tool and three hob teeth.