PARTS RAMBLING DEVICE Russian patent published in 2014 - IPC B24B31/02 

FIELD: machine building.

SUBSTANCE: proposed device comprises rumbling machine fitted at the bed and composed of screw column with loading and unloading devices and drive of rotation. Screw column has one or more strips arranged over its perimeter. Said strip is flexed in wavy manner over flexure lines at an angle to their lengthwise edges to make unidirectional screw surfaces over outer and inner surfaces and shaped to inner and outer surface pockets of wavy shape. Shape and side of inner surface pockets differ from those of outer surface pockets. Barrel-like helical surface is arranged over the entire length of screw column and provided with the device for turn pitch variation by expansion or contraction.

EFFECT: enhanced performances, simplified production.

6 dwg