VERFAHREN UND VORRICHTUNG ZUR METALLBLECHVERARBEITUNG

摘要

The portion to be deformed of a metal sheet is heated by irradiating it with a laser beam which is scanned at a high speed, and, when the portion to be deformed has attained a predetermined temperature, a bending force is applied to the portion to be bent to perform bending of the metal sheet. When the shape of a metal sheet is to be worked into a circular arc of 90 DEG having a predetermined radius by means of six bending processes, the metal sheet is worked such that the working process is divided into six processes and the bending processes are sequentially performed after fixing a metal sheet edge of the metal sheet. The yield strength of a steel material is reduced when it is heated and a metal sheet is worked using a laser by which a local heating is possible. Dies are therfore unnecessary, whereby processing at low costs and an apparatus therefor may be achieved.