The integration of highly sensitive piezoelectric force sensors directly into the tool holder of Swiss-type turning machines for micro-machining – close to the tool’s cutting edge, where the acting force is the greatest – allows for precise, high-resolution indirect measurement of cutting forces throughout the machining process, from roughing all the way to finishing.
Our application-specific solution for micro-machining relies on the “linear unit” of the quick-change system of the Piezo Tool System (PTS linear), which was developed in collaboration with Paul Horn GmbH. The clever positioning of the sensors between the machine interface and the baseplate retains the advantages of quick tool changes. At the same time, the sensors can monitor a variety of different tool holders.
Real-time measurement of extremely small cutting forces in micro-machining generates critical, high-resolution cutting force data. It makes it possible to capture even the smallest force variations and vibrations, which can indicate deviations in the machining process as the result of tool wear. Cutting force measurement with the PTS enables plant operators to intervene in good time (machine stop) before damage can result from tool wear or tool breakage.