Patent ID: 11906388
Assignee: AMADA CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 8:
9. A laser processing machine comprising:
a laser oscillator configured to emit a laser beam;
a collimator unit including a lens;
a processing head including a condenser lens configured to irradiate a focused laser beam onto a sheet metal;
a photodiode or an imaging element configured to detect intensity of reflected light reflected by the lens included in the collimator unit; and
an NC device configured to execute control
to form a pierced hole by piercing the sheet metal with a laser beam emitted from the laser oscillator and supplied to the collimator unit,
to irradiate a laser beam emitted from the laser oscillator and supplied to the collimator unit as inspection light so as to pass through the pierced hole,
to compare, with a threshold, the intensity of the reflected light detected by the photodiode or the imaging element during the irradiation with the inspection light, and
to detect whether the inspected lens is deteriorated, or a degree of the deterioration.