BENDING ANGLE MEASURING APPARATUS AND METHOD FOR MEASURING A BENDING ANGLE BY MEANS OF THE BENDING ANGLE MEASURING APPARATUS

摘要

The invention concerns a bending angle measuring device (23), which has an illumination device (25) with at least one light source (26), and an optical means of detection (29) with a light-detecting surface (30). On the bending angle measuring device (23) is arranged at least one axisymmetric body (32) with a reflecting surface (33), wherein a central axis (34) of the axisymmetric body (32) is arranged such that it is aligned parallel to the bending edge, wherein a first light beam (37 transmitted by the illumination device (25) is reflected from the sheet metal part (4) and as a second light beam (39) is directed onto the axisymmetric body (32), and the second light beam (39) is reflected on the axisymmetric body (32), and as a third light beam (40) is directed onto the optical means of detection (29), in particular onto its light-detecting surface (30).