CHANNELING MACHINE FOR PRODUCTION OF CLOSED SHAPES Russian patent published in 1994 - IPC

FIELD: metal working. SUBSTANCE: channeling machine consists of frame with mounted working drive and non-drive rolls; feed, forming, and size rollers kinematically connected to one another and to the drive. Side non-drive horizontal forming rollers are placed between the forming rollers. Provision is made for a mechanism controlling center distances between the rolls. Support and forming rollers are secured along the forming section axis in the vertical plane between the side horizontal forming rollers. The forming surfaces of the last pair of side horizontal forming rollers are made inclined at an angle to the formed shape axis. The center distances control mechanism is made as two eccentric bushings mounted concentrically on the non-drive working rolls and connected via bevel gear drive to gear shaft. EFFECT: enlarged operating capabilities. 6 dwg