Ring shaping apparatus
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United States of America Patent
Stats
-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Jul 5, 1988
filing date -
Jul 5, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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