METHOD FOR MANUFACTURING OF PIPES WITH HELICAL CORRUGATIONS AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC B21D15/04 B21D51/12 B21C37/20 

FIELD: technological processes, metal working.

SUBSTANCE: invention may be used in metal forming for making pipes with helical corrugations. For shaping of corrugations on initial pipe, rollers are arranged around pipe and at the angle to its longitudinal axis. Pipe is displaced in axial direction. In process of corrugation shaping, torsion torque is fed to rollers. Each roller is equipped with rotation drive arranged with the possibility of torsion torque feed connection and disconnection in process of radial displacement from minimum to maximum distance from device axis and turn from 0° to ±90° relative to specified axis.

EFFECT: expansion of technological resources, higher quality and efficiency.

8 cl, 5 dwg