Devices for the grooving of tubes
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United States of America Patent
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Jun 18, 1996
Grant Date -
N/A
app pub date -
Jul 14, 1994
filing date -
Jul 16, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device for grooving the internal surface of tubes is disclosed as including a holding die for holding in position inside the tube a floating chuck equipped with a grooved chuck and a grooving unit including a rotating cage for retaining a number of rotating balls for compressing the tube wall against the grooved chuck to form a groove in the tube. The grooving unit includes a finishing die. The rotating cage includes a supporting member of which the internal profile, in an axial section is an arc of a circle, and a cage closure plate for retaining the balls in the cage and further includes a lubricator for the interior of the cage.
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