METHOD FOR DEFINITION OF LIMITS OF EXTREME WEAR OF THE REPLACEMENT CUTTING TOOL Russian patent published in 2018 - IPC G01N3/58 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of metrology. Method for determining the ultimate wear of the replaceable cutting tool is that during the cutting process, vibroacoustic signals are measured with further separation of the high and low frequency ranges from the latter. Then, the ratio of the effective amplitudes of these signals K_f, carry out a test cutting with a new tool until it is completely worn out, while fixing the stages of running-in, normal and catastrophic wear of the tool and corresponding to the mentioned stages the values of the ratio of the effective amplitudes of vibro-acoustic signals K_fp. Then, the value of the ratio of the effective amplitudes of the vibro-acoustic signals at the beginning of K_fp^N and at the end of K_fp^K stage of normal tool wear, as a diagnostic parameter, use the parameter of extreme wear P, determined by the formula P=K_fp^N/K_fp^K, and in the process of cutting with a replaceable cutting tool, the current values K_f the ratio of the effective amplitudes of vibro-acoustic signals, of them the value of K_f^N, corresponding to the beginning of the normal wear of the tool, and the maximum wear of the replaceable cutting tool is determined when the current value K_f the values of K_f=K_f^N/P.

EFFECT: increased accuracy of the wear assessment of the replacement cutting tool.

1 cl, 6 dwg