Robuste Inline-Rekonstruktion geometrischer Merkmale in der Blechumformung auf Basis von Laserprofilsensoren

This paper presents a method for robust inline reconstruction of geometric features in sheet metal forming using commercially available line-scanning laser triangulation sensors. The goal is to achieve 100 percent inline component inspection to reduce scrap and improve efficiency. A ray tracing-based simulation approach is employed to assess uncertainties introduced by sensor limitations, shadowing, resolution constraints, and sensor noise. Additionally, a calibration procedure is presented, where a calibration object is used to verify and correct the laser plane’s alignment into a reference coordinate system. The reconstructed geometric features such as component heights and radii allow conclusions to be drawn about the component quality.