DEVICE FOR STATIC-PULSE HARDENING BY SPRING-LOADED BURNISHING TOOL Russian patent published in 2012 - IPC B24B39/02 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to burnishing and gaging tools, those for broaching and hardening part bore inner surfaces. Proposed device comprises broaching tool with deforming elements housing hammer and waveguide to take up static load and pulsed load applied via hammer by hydraulic pulse generator. Wave guide and hammer are made up of equal-diameter rods while deforming element represent a conical helical spring with outer surface shaped to truncated cone with angle φ=3…5° and, at least, three deforming coils. First and last coils are stiff annular elements.

EFFECT: increased depth of hardened layer, better hardening, higher efficiency, power savings.

1 cl, 7 dwg