G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 3/32 (2006.01) B23Q 17/09 (2006.01) G01N 3/58 (2006.01) G05B 19/4065 (2006.01)
Patent
CA 2098943
-35- Abstract A system and method for detecting failure of a cutting tool during its operation by utilizing a frequency domain analysis of the vibration of the cutting tool. A signal is generated based on vibration of the tool during its operation to determine the energy of the signal in a plurality of signal component frequency bands. The energy of the signal in each of the plurality of frequency bands is compared to corresponding threshold values to generate a tool failure signal when the energy of the signal in a preselected number of frequency bands exceeds the corresponding threshold values for a predetermined period of time. In a second embodiment, time domain analysis of the signal generated based on vibration of the tool is utilized in addition to frequency domain analysis. The averaged signal is compared to a threshold signal to generate a tool failure signal when both the energy of the signal in a preselected number of frequency bands exceeds the corresponding threshold values and the averaged signal exceeds the threshold signal.
Hamidieh Youssef A.
Seth Brij B.
Ford Motor Company Of Canada Limited
Sim & Mcburney
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