Adaptive Prozessführung für die Zerspanung

Since a direct measurement of occurring process fluctuations, such as tool wear or microstructure and allowance fluctuations, is not possible, it is necessary to use indirect measurement variables for information acquisition. These can be, for example, the torque-forming current of the main spindle or, in machines where several tools are simultaneously engaged (multi-channel machines), such as machines with two tool slides, the torque-forming current of the feed axes. Due to the interaction between the process conditions and the signals evaluated during the process, the process status can be continuously characterized and influenced by the control system. The subject of the invention is a novel system for adaptive process control, which operates on the principle of processing the internal drive signals of machine control systems. With the help of this system, unproductive air cuts due to safeties in approach and overflow paths can be minimized and fluctuations in dimensions and microstructure and process instabilities of the running machining can be detected. This makes it possible to always regulate to the maximum of the permissible process parameters - an optimization of productivity and an increase in process stability are the consequences. Furthermore, continuous monitoring and control allows longer tool life due to the prevention of premature tool wear.