Incremental forming: an integrated robotized cell for production and quality control

The present work proposes the integration of a incremental forming robotised system with an optical measurement device (robotised too) formerly developed for quality control purposes of processes and products. A parallel kinematics robot moves a spherical punch according to a predefined path, deforming a gridded sheet metal that is scanned by a couple of cameras moved by a second robot. As a result of the post-processing of the acquired images, accordingly to the so called grid method, the strain distribution can be computed, and the quality of the forming process can be assessed. The system is completed by a projector and four fixed cameras, that permit to evaluate the final shapeof the formed part by means of the fringe projection and phase shift techniques.