System for Metering the Bending Angle in a Machine for Bending Metallic Sheets and/or Sections, as Well as Method and Machine for Bending Metallic Sheets and/or Sections Using Such System

摘要

A system is described for metering the bending angle of a metal sheet or section (35) in a bending machine (10) which comprises a fixed bed to support the sheet or section (35) to be machined, a support frame (12) for a press (15) comprising at least one mobile punch (32) and a corresponding fixed counter-punch (24) acting as temporary clamping means of the sheet or section (35) during the bending stage, also comprising at least one bending blade (20, 21) which in operation can be moved towards and away from the sheet or section (35) being machined, in order to shape this sheet or section (35). This system also comprises means for the remote measurement (39) of the instantaneous bending angle (α) of the piece (35) being machined, the measurement means (39) being suitable to take measurements at least two points of the distance of the piece (35) from the measurement means (39), to process the data relative to the distances measured, to obtain a value corresponding to the instantaneous bending angle (α) and to convert this value to an electric signal that can be subsequently used in order to check the implementation of the bending method.