Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1994-03-31
1996-07-30
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 101, B21B 3708
Patent
active
055400728
ABSTRACT:
An eccentric roller control apparatus is intended to eliminate the adverse effect of the eccentric upper and lower back-up rollers against a product profile with high precision. The rolling weight sensors 7W, 7D sense each rolling weight of a working side and a driving side. The rotary angles of the upper back-up roller 4T and lower back-up roller 4B are sensed by the angle sensors 8T, 8B. The roller eccentricity sensor 14 serves to derive each of the amplitudes A.sub.TWn, B.sub.TWn, A.sub.BWn, B.sub.BWn, A.sub.TDn, B.sub.TDn, A.sub.BDn and B.sub.BDn as each roller eccentricity of the working side and the driving side, based on the sensed rolling weights P.sub.W, P.sub.D and the rotary angles .THETA..sub.T and .THETA..sub.B. Then, the depression operating unit 15W serves to derive the depression of the working side and add the derived value to the depressor control device 6W. The depression operating unit 15D serves to derive the depression of the driving side and add the derived value to the depressor control device 6D.
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patent: 4843854 (1989-07-01), Ackerly
patent: 4850211 (1989-07-01), Sekiguchi et al.
patent: 4910985 (1990-03-01), Ballyns
Kabushiki Kaisha Toshiba
Larson Lowell A.
Schoeffler Thomas C.
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