MILL FOR ROLLING OUT RINGS Russian patent published in 1995 - IPC

FIELD: metal pressure forming. SUBSTANCE: mill for rolling out rings includes frame with horizontal guides, a rolling table, arranged on the frame, and a drive shaft with an outer roll, a bearing assembly with a lifting and depending turntable, having inner rolls, provided by an additional support assembly in their rolling position; a mechanism for lifting the turntable; a rotation mechanism with a pinion, mounted on an axle of the turntable; a movable stand with two lower and one upper end rolls. One of these rolls is driving roll; the other is mounted with possibility of motion in axial direction. The mill also has centering rollers. A cartridge is mounted on vertical guides in a body of the additional support. Bearing units of the centering rollers are movably mounted on a cross slide rails in the above mentioned cartridge. The bearing units of the centering rollers are mutually joined by a synchronization mechanism and they are connected with a motion drive apparatus. A line, connecting the rotation axles of the centering rollers, is spaced from an axis of the inner roll to a side of a deformation zone by a value, providing an angle α of embracement of the ring by the centering rollers, equal to (150-90)degrees. EFFECT: enhanced quality of ring articles. 1 cl, 4 dwg