Robust Noncontact Scanner Measurement Strategy to Detect the Shape and the Thickness of Single Point Incremental Forming Parts

This article presents a robust and powerful method for measuring complex geometric shapes resulting from incremental deformation. This method is based on the use of a 3D scanner with structured light projection. First, it presents the characteristics of the optical equipment used, including the underlying physical principles, its limitations and accuracy control. Next, the acquisition strategy is detailed and validated by comparison with recognized reliable reference measurements. A method for calculating part thickness is also proposed and evaluated using geometries from perfectly mastered CAD models. Finally, the developed strategy is applied to real-world examples to demonstrate its ability to measure both the shape and the thickness of parts resulting from incremental deformation. The final section highlights the influence of punch geometry and the lubrication conditions on the obtained results. The proposed geometry control strategy offers significant potential, particularly in optimizing shaping parameters using the SPIF method.