Patent ID: 7992475
Filing Date: 2011-08-09
Classification: B21D,Y10T

Abstract:
1. A plate workpiece processing method for obtaining at least two workpiece cut-outs from a plate workpiece, the method comprising: utilizing one or more cutting devices of a machine tool to perform a first cutting operation and a second cutting operation on a plate workpiece, wherein the cutting device or devices used for the second cutting operation are configured to perform a cutting operation with the plate workpiece being maintained stationary in a working area that is smaller than the plate workpiece, the working area being determined by a structural maximum travel limit distance of the cutting device or devices used for the second cutting operation, wherein during the first cutting operation, with the plate workpiece moving relative to the cutting device or cutting devices used for the first cutting operation, at least two workpiece cut-outs are partially formed in the plate workpiece with only connecting portions being left to connect the partially formed workpiece cut-outs to a remaining portion of the plate workpiece, the connecting portions being shortened along one or more cutting lines of the second cutting operation from a size that is larger than the working area of the cutting device or cutting devices used for the second cutting operation to a size that fits within the working area, and wherein during the second cutting operation, with the plate workpiece being maintained stationary and supported by the machine tool, the shortened connecting portions are severed, via the cutting device or cutting devices used for the second cutting operation, along the one or more cutting lines of the second cutting operation, the second cutting operation being a single continuous cutting operation to completely separate the workpiece cut-outs from the remaining portion of the plate workpiece.