DEVICE FOR PLASTIC VOLUMETRIC DEFORMATION OF METAL PIPES Russian patent published in 2015 - IPC B21D3/00 

FIELD: metallurgy.

SUBSTANCE: deformation assembly is made in the form of a differential gear mechanism containing a carrier kinematically connected to a power rotation drive, gear wheels fixed on ends of shafts installed on the carrier with a possibility of being rotated about axes parallel to the axis of the deformed pipe and carrying deforming rollers with diameter d_r on the other end, double-rim satellites kinematically connected to wheels and a crown gear wheel installed in the housing with a possibility of being rotated about the axis of the deformed pipe. Diameter of the deforming rollers is determined based on the specified ratio.

EFFECT: enlarging technological capabilities; reducing wear of deforming rollers.

2 cl, 2 dwg