Patent ID: 7908948
Filing Date: 2011-03-22
Classification: B21B,B23D,Y10T

Abstract:
1. A method of trimming longitudinal edges from metal strip which comprises the steps of: (a) advancing metal strip to be trimmed along longitudinal edges of the strip along a trimming path in a longitudinal direction and engaging said strip at each longitudinal side thereof with a respective trimming shear head, thereby cutting a respective trim from the respective side along the respective longitudinal edge; (b) measuring positions of the longitudinal edges and a width of the strip at a location immediately upstream in said direction of the respective heads; and (c) adjusting a position of a centerline of said strip based upon results of the measurement in step (b), before, after or during engagement of blades of said shear heads with said strip whereby said strip centerline is positioned relative to the shear heads and blades thereof, the centerline position being adjusted by passing said strip onto rolls shiftable by an actuator and located upstream of said shear heads.