Patent ID: 6727986
Filing Date: 2004-04-27
Classification: B21D,G01B

Abstract:
Device for measuring a folding angle (A) of a sheet (6,25,26), characterised in that the device (1) comprises a measuring tool (9) for measuring, on a side of an element (4,24,7), a number of distances in a plane (28) that crosses the sheet (6,25,26) and the element (4,24,7), said distances comprising a number of distances (D1-D5) between the measuring tool (9) and different points on the sheet (6,25,26) and a number of distances (D6-D8) between the measuring tool (9) and different points on the element (4,24,7); means (18) for determining a distance profile (19) of the measured distances; means (18) for determining two straight lines (21,22) based on values of the distance profile (19), and means for determining the angle (B,B1,B2) between the sheet (6,25,26) and the element (4,24,7) from the angle between the two straight lines (21, 22), so as to determine the folding angle (A) of the sheet (6,25,26) as a function of the thus determined angle (B,B1,B2) between the sheet (6,25,26) and the element (4,24,7).