Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1979-03-19
1980-11-11
Mehr, Milton S.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 17, 72 21, 72173, B21D 514, G01B 520
Patent
active
042325404
ABSTRACT:
A roll forming apparatus for curling a sheet of metal into a curved configuration having a plurality of sheet contours which apparatus automatically and sequentially varies the degree of curvature of a sheet of metal being treated by the apparatus as the sheet progresses through the apparatus. The apparatus includes a pair of pinch rolls and a bending roll for curving the sheet into predetermined arcs dependent upon the relative positions of the bending and pinch rolls, and a control mechanism to alter the relative positions of the bending and pinch rolls for each of a successive plurality of segments of the sheet as it travels through the apparatus. The control mechanism includes means to sense the actual distance the sheet has progressed through the roll forming apparatus and to compare the actual distance with one or more pre-established distances of sheet travel at which the radius of curvature of the sheet is to be changed. Responsive to the comparison, the control mechanism then varies the position of the bending roll relative to the pinch rolls to effect changes in the contour of the sheet being roll formed.
REFERENCES:
patent: 2325523 (1943-07-01), Lermont et al.
patent: 3906765 (1975-09-01), Foster
patent: 3955389 (1976-05-01), Foster
patent: 4047411 (1977-09-01), Foster
Cain Jack C.
Carlson Maynard E.
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