Ring shaping apparatus

Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element

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Details

72102, 72105, 72106, 72110, B21H 112

Patent

active

048690880

ABSTRACT:
This invention relates to a ring shaping apparatus for cold rolling workpieces in ring form into a desired shape. The workpieces include a bearing in which an inner race, an outer race or a pillow is to be formed, a cage and a sleeve. The apparatus comprises a shaping roller, a mandrel and a support roller. Rotational rate of the support roller is controlled in response to variations in the diameter of a workpiece and in accordance with a rotational rate of the shaping roller. A pair of backup rollers in rotatable contact with peripheral surfaces of the workpiece under a constant pressure are interlocked to synchronously follow the variations in the diameter of the workpiece. Consequently, this apparatus is capable of shaping the workpiece with high precision with respect to roundness.

REFERENCES:
patent: 3345845 (1967-10-01), Marcovitch et al.
patent: 3434322 (1969-03-01), Cowles et al.
patent: 3681962 (1972-08-01), Marcovitch
patent: 3698218 (1972-10-01), Wieting
patent: 3824820 (1974-07-01), Jeuken et al.
patent: 4454739 (1984-06-01), Ciccorelli
patent: 4559482 (1985-12-01), Fencl

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