Metal deforming – By deflecting successively-presented portions of work during... – By use of deflected arranged to provide longitudinally...
Patent
1984-08-10
1986-05-13
Bray, W. D.
Metal deforming
By deflecting successively-presented portions of work during...
By use of deflected arranged to provide longitudinally...
72236, 72245, B21D 105, B21D 3100
Patent
active
045878226
ABSTRACT:
A leveling apparatus for leveling strips of metallic material comprising a support housing; a guide tube, rotatably attached to the support housing, having a hollow interior and a longitudinal slot; a cylindrical support roll, rotatably attached to the housing and positioned within the guide tube; a cylindrical work roll having a diameter substantially less than the support roll and positioned within the slot; and a feedback control for rotating the guide tube to position the work roll such that forces exerted upon the work roll by a metallic strip passing over it act to hold the work roll against the support roll, and tangential components of the force tending to urge the work roll against the guide tube are minimized. In a preferred embodiment, the control comprises a pair of opposing cylinders which are pressurized by a source of compressed fluid. A servo valve responsive to forces exerted by the work roll upon the guide tube depressurizes one of the cylinders and pressurizes the other causing an imbalance in which a rod joining the cylinders is displaced to rotate the guide tube to a position in which the force exerted by the work roll upon the guide tube is minimized.
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Bray W. D.
The Monarch Machine Tool Company
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