Laser beam machining device

Details Laser beam machining device Laser beam machining device

B - Operations, Transporting

23

K

327/1.5

B23K 26/00 (2006.01) B23K 26/03 (2006.01) B23K 26/42 (2006.01)

Patent

CA 2004677

ABSTRACT OF THE DISCLOSURE A laser beam machining device for machining a workpiece by irradiating a laser beam onto a surface of a workpiece is provided, and comprises a power sensor (21) for detecting the level of a reflected laser beam (11) fed back to a laser oscillator due to a reflection thereof by the surface of the workpiece (10), and an abnormality detecting unit for stopping the operation of the laser oscillator and movement of the workpiece (10) and displaying an alarm at a display device (19) when the power level of the reflected laser beam (11) becomes higher than a predetermined value. The power level of the reflected laser beam (11) fed back to the laser oscillator is monitored by the power sensor (21), and when an abnormal reflection occurs, the monitored value becomes higher than the predetermined value and this increase is detected by the abnormality detecting unit, which then stops the operation of the laser oscillator and movement of one of the workpiece (10) and a nozzle, and displays an alarm at the display device (19).

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