METHOD AND APPARATUS FOR DETERMINING THE THICKNESS OR THE SPRINGBACK OF A WORKPIECE BENT BY A PRESS BRAKE

摘要

The invention relates to a method and apparatus for determining the thickness of a workpiece or its springback in a press brake. The method includes the steps of detecting the deformation or strain in the punch (1) and/or the die (4) during bending, and translating it into an electric signal, by means of suitable devices located directly on the working parts; possibly amplifying the electric signal by means of an amplifier (5) and transmitting said signal to a press brake controller (6), which processes the collected data and corrects the angle of the workpiece being bent. The process allows to determine the springback of the bent sheet, thereby increasing processing accuracy.