Principles of Formation and Designing Equipment for Finishing Parts on Screw Rotor Basis

Abstract

There are presented technologies and equipment based on screw rotors where technological and transportation operations are combined. The methods and ways for the speed performance comparative analysis of screw rotors are shown, for that there are carried out experimental investigations to determine a motion rate of parts with different weights from rotation frequency of screw rotors of 1-4 types. 
 The results are accumulated in alignment charts which allowed creating a procedure for an engineering calculation of screw rotors. The original designs of such operation units have Russian priority and they are presented in fifty one patents for invention of the Russian Federation. In the paper there are offered methods and ways for the comparative analysis of screw rotor speed performance, the procedure for the engineering calculation of screw rotors. There is presented a machine for finishing parts with replaceable screw rotors of 1-4 types. The productivity and reliability increase of operation in such equipment is achieved at the expense of uninterrupted supply, dosage and reliable delivery of abrasive grains and parts into the operation unit made in the form of a screw rotor, worked parts separation from abrasive grains and working wastes, damage decrease of parts worked and their marketable appearance improvement, and also labor conditions improvement for the staff. There are shown inventions developed by the authors and for which they obtained patents of the RF and the information of which may be useful at the creation of equipment for OZO parts based on screw rotors.