The sensor fusion method using both an acoustic emission (AE) sensor and a built-in force sensor is introduced for on-line tool condition monitoring during turning. The cutting force was measured by a built-in piezoelectric force sensor, which was inserted in the tool turret housing of an NC lathe. FEM analysis was carried out to locate the most sensitive position for the sensor. A burst of AE signal was used as a triggering signal to inspect the cutting force. A significant drop in cutting force indicated tool breakage. The algorithm was implemented in a DSP board and the monitoring system was installed on a CNC lathe in an FMS line for in-process tool-breakage detection. The proposed system showed an excellent monitoring capability.
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Choi, D., Kwon, W. & Chu, C. Real‐Time Monitoring of Tool Fracture in Turning Using Sensor Fusion. Int J Adv Manuf Technol 15, 305–310 (1999). https://doi.org/10.1007/s001700050071
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DOI: https://doi.org/10.1007/s001700050071