FORMATION METHOD OF ROTOR OF ELECTRIC SCREW INSTALLATION, AND ROTOR OF ELECTRIC SCREW INSTALLATION (VERSIONS) Russian patent published in 2013 - IPC F01C1/107 F04C2/107 

FIELD: machine building.

SUBSTANCE: in compliance with one of the invention implementation versions, rotor 500 formation method provides for use of a casting mould with a shaped helicoid hole. Elastic tube 506 is inserted into the shaped helicoid hole and compliance of elastic tube 506 to the shaped helicoid hole is ensured. Core 504 is arranged inside the shaped helicoid hole and cavity between external surface of the casting mould and elastic tube is filled in the casting mould with cast material 502 that is in liquid state. Cast material 502 is hardened till cast material 502 and elastic tube 506 have the form of shaped helicoid external surface, and the casting mould is removed for formation of rotor 500 with core 504 enveloped with cast material 502 that is in its turn enveloped with flexible tube 506.

EFFECT: creation of a composite structure of rotor to provide its long-time and reliable operation.

139 cl, 9 dwg