FINISHING-HARDENING TOOL Russian patent published in 2009 - IPC B24B39/00 

FIELD: mechanics.

SUBSTANCE: proposed tool comprises fixed base, movable casing, shaft running in bearings and fitted with helical deforming spring, and flexible element arranged between the casing and base. The shaft axis is arranged at the angle of crossing to workpiece lengthwise axis. The shaft with deforming tool features a separate drive to revolve the shaft about its axis. The helical deforming spring features various-diametre coils. The said spring seats on the shaft with the help of damping sleeve, the apices of spring coil outer surfaces being located lengthwise on curve line that represents a part of ellipsoid. Note that aforesaid coil surfaces have ledges and recesses.

EFFECT: expanded machining performances, higher hardness of workpiece surface, higher efficiency and lower costs.

7 dwg, 1 ex, 1 tbl