Multisensory stamp and forming parts. (Picture: Fraunhofer IST)
Fraunhofer, Industry 4.0

Multisensory tools for digital process monitoring

Autonomous, self-controlling production systems have tremendous potential in the transformation towards sustainability. At the Hannover Messe, the Fraunhofer Institute for Surface Engineering and Thin Films IST will be presenting innovative solutions for real-time data acquisition directly in the running process.

Through the development of integrated and wear-resistant thin-film sensors, parameters such as force, temperature or wear can be recorded in the vicinity of highly stressed forming zones. As a result, the manufacturing process for high-quality cold-forged parts can be monitored and optimized from an ecological and economic point of view. Process understanding and reliability increase

Temperature and wear detection

One example is the coating of a forming punch with a multifunctional thin-film sensor system. The temperature distribution along the punch shaft and the punch land can be precisely measured by means of three thermoresistive sensors. In addition, structures for wear detection are located on the punch land. The pressure distribution is recorded by a measuring disk behind the tool.

The acquired data are already available during the forming process, with the result that disruptions and potential weak points can be immediately detected during the course of the process, enabling corrections and adjustments to be implemented at short notice. Simultaneously, the data permit a better understanding of the process and constitute the prerequisite for the development of digital twins which enable rapid and cost-effective process optimization and the construction of autonomous, self-controlling production systems.

On the Fraunhofer joint stand in the “Adaptronics” section (Hall 16, Stand A12) at the Hannover Messe, the Fraunhofer IST will be demonstrating real-time data acquisition with a multisensory forming punch directly on site. Furthermore, a variety of pressed parts and blanks will also be on display.