CASE STUDY STELLANTIS YouTube STELLANTIS How the Mulhouse plant of the Stellantis group optimized its CMMs measurement processes with the Kreon Zephyr III scanner The Mulhouse plant, affiliated with the Stellantis automotive group and employing 178 people, specializes in the manufacturing of tooling, mainly molds for the injection of aluminum under pressure. Equipment designed for forging and stamping is also developed on-site. All tooling undergoes rigorous quality controls to be used with confidence on production lines. STELLANTIS Before the introduction of the Kreon 3D scanner, measurements of tooling pieces were carried out by probing, using three coordinate measuring machines (CMMs): two Wenzel CMMs and one Erowa CMM. However, this method did not cover all parts comprehensively, nor did it detect certain defects. To improve this situation, the use of a structured light 3D scanner, already present within the company, was considered. However, despite satisfactory measurement accuracy, the slowness of the device made the inspection operations too time-consuming, hindering production pace and requiring a full-time operator. Therefore the metrology team looked for other alternatives to directly digitize on CMMs. This led them to discover Kreon 3D scanners, particularly the Zephyr III. The feasibility of integrating the Zephyr III into the measurement process was quickly demonstrated by Kreon experts. The Kreon solution offers several advantages, including the compatibility of Zephyr III with Metrolog X4, the metrology software of the Stellantis group. The teams were also attracted by the efficiency of Kreon experts and the company’s geographic proximity. To ensure optimal operation of the solution, the implementation of the Kreon scanner required modification the controller and replacement of the CMM rack. Two ACR III tool change racks were also installed to automate the transition from probing to scanning. The inspection is thus continuous, using probing for checking straight faces, holes, and areas with fine tolerances, and the scanner for the overall inspection of the parts’ shape and left shapes.