METHOD OF PULSE-SHOCK HARDENING Russian patent published in 2011 - IPC B24B39/04 

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to surface plastic deformation of shafts with billets with complex screw and complex-shape surface. Billet and deforming tool are driven to revolve about their axes while deforming is fed longitudinally. Deforming tool comprises body with central bore made up of three-phase induction squirrel-cage motor with rotor running in antifriction bearing there inside. Hollow-shaft rotor runs in antifriction bearing there inside. Deforming elements are made up of coils of helical spring coiled to embrace to billet and fitted in rotor bore on flexible sleeve. Flexible sleeve is secured by nuts screwed in rotor threaded bores to adjust rigidity of said sleeve.

EFFECT: expanded performances, higher efficiency and quality.

5 dwg