Mitsubishi Electric Corporation

Mototoshi Kumaoka

Naoki Miyamoto

Tomohiro Kyoto

In a laser processing machineincluding a plurality of element units containing at least a laser blower unit, an optical-path purge unit, and a temperature controlling unit, a measurement unit and a control unitare provided. The measurement unit measures an elapsed time from a final trigger at which a laser processing operation of the laser processing machine has stopped and no user operation is applied with respect to the laser processing machine. The control unitstops the element units based on the elapsed time after the final trigger, when a condition specified for each of the element units is satisfied.

Control device and control method for laser processing machine

The sealed gas laser oscillator that includes the airtight vessel, the laser gas supply source that supplies a laser gas to the airtight vessel, and the vacuum pump that performs evacuation until a pressure of an inside of the airtight vessel reaches a target reached pressure every predetermined interval between laser gas exchanges and is connected to the airtight vessel, and that performs laser oscillation in a state where the airtight vessel is filled with the laser gas. The gas laser oscillator includes a unit that determines the target reached pressure on the basis of the interval between laser gas exchanges, a leakage rate of an impurity gas from the outside to the airtight vessel after evacuation, and an allowable impurity gas pressure at which the gas laser oscillator is capable of being operated.

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Chiyoda-ku, Japan

Mototoshi Kumaoka