TUMBLING MACHINE Russian patent published in 2009 - IPC B24B31/02 

FIELD: mechanical engineering.

SUBSTANCE: invention refers to the field of mechanical engineering and may be used for finishing-clearing and strengthening treatment of parts in free state. Tumbling drum is connected with rotary drive and executed as multiturn screw column made of at least one strip folded along straight lines placed at an angle to strip edges with creation of parallelograms located on the strip alternately in opposite directions. The strip is rolled up into cylindrical winds interconnected along longitudinal edges with creation of unidirectional zigzag screw lines over outer surface. Screw zigzag pockets in the form of polygonal or curvilinear geometrical figures are formed on outer and inner surfaces of tumbling drum. For polygonal-shaped pockets, distance between straight fold lines of the strip is equal to length of each element in polygon. For curvilinear-shaped pockets - to the length of its involute. Shape and dimensions of pockets on inner surface of tumbling drum differ from shape and dimensions of pockets on its outer surface.

EFFECT: technological capabilities of machine are broadened.

12 dwg