Abstract: A cutting apparatus having a cutting blade for cutting a workpiece held on a chuck table is disclosed. The cutting apparatus includes an elastic wave detecting sensor for detecting an elastic wave due to the rotation of the cutting blade, a reference data storing section configured to store reference data as a set of reference processing elastic wave data and reference idling elastic wave data, a threshold value storing section, a ratio calculating section, and a determining section.

Abstract: A cutting apparatus includes a cutting unit including a cutting blade that has a cutting edge for cutting a dresser board. An elastic wave detection sensor is disposed in the cutting unit, for detecting an elastic wave produced when the dresser board is cut. The elastic wave detection sensor produces an output signal representing the detected elastic wave when the cutting blade cuts the dresser board and is dressed thereby, the output signal being variable as the cutting blade is progressively dressed by the dresser board. A control unit stores in advance, as a threshold value, the value of the output signal when the dressing of the cutting blade is completed. The control unit stops cutting the dresser board with the cutting blade and finishes the dressing of the cutting blade when the output signal produced by the elastic wave detection sensor reaches the threshold value.

Abstract: Disclosed herein is a cutting apparatus having a cutting blade for cutting a workpiece held on a chuck table.

Abstract: A cutting apparatus includes a cutting unit including a cutting blade that has a cutting edge for cutting a dresser board. An elastic wave detection sensor is disposed in the cutting unit, for detecting an elastic wave produced when the dresser board is cut. The elastic wave detection sensor produces an output signal representing the detected elastic wave when the cutting blade cuts the dresser board and is dressed thereby, the output signal being variable as the cutting blade is progressively dressed by the dresser board. A control unit stores in advance, as a threshold value, the value of the output signal when the dressing of the cutting blade is completed. The control unit stops cutting the dresser board with the cutting blade and finishes the dressing of the cutting blade when the output signal produced by the elastic wave detection sensor reaches the threshold value.