FIELD: machine engineering, namely diagnostics of cutting tool wear degree in number program controlled machine tools at operation. SUBSTANCE: complex includes receiver of acoustic emission signals, preliminary amplifier, band filter unit, integrator, main amplifier and device for diagnostics connected with number program control unit of machine tool. Integrator is connected between band filter unit and main amplifier. Device for diagnostics is in the form of separate unit with two inputs and it allows to perform diagnostics of cutting tool according to its two parameters -amplitude and frequency values of acoustic emission signals. EFFECT: enhanced reliability of controlled parameters and accuracy of their measurements. 3 dwg
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