DEVICE FOR STATIC-PULSE ELASTIC HARDENING Russian patent published in 2012 - IPC B24B39/02 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to burnishing, gaging, hardening of metal part inner surfaces. Proposed device comprises mandrel with deforming elements and first hydraulic cylinder to apply static load thereto. It has also second hydraulic cylinder with hammer and waveguide to apply intermittent pulse load to mandrel and hydraulic pulse generator for supply of both hydraulic cylinders. Said also second hydraulic cylinder with hammer and waveguide is arranged on first cylinder rod to allow hammer and waveguide to reciprocate thereon. Deforming element represents a screw helical spring with outer surface shaped to truncated cone with tape angle φ=3…5° and, at least, three, deforming coils. First coil is connected with lead disc while last coil is connected with gaging coil.

EFFECT: expanded performances, higher efficiency and power savings.

9 dwg