Verfahren und Vorrichtung zur Ueberwachung der spanabhebenden Bearbeitung eines Werkstueckes

A sound emission analyzer for the monitoring of metal-cutting characteristics and tool wear during a metal-cutting machining process has a transducer (1) accommodated in a tool holder, said transducer being connected via a bandpass filter (3) to a broadband amplifier (5). The broadband amplifier (5) supplies an isolating stage (6) in which components contained in the sound emission signal composed of the continuous basic noise signal resulting from cutting noise and friction noise and the superimposed pulsed metal cutting signals having a higher amplitude are isolated. The isolating stage (6) is followed by a basic noise signal processor (10) to evaluate the basic noise signal and a metal cutting signal processor (7) to evaluate the metal cutting signals. An evaluator (11) analyzes the data gathered and processed by the noise signal processor (10) and the metal cutting signal processor (7).