| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To materialize high output without possessing a plurality of laser light sources in a laser beam machining apparatus while suppressing increase in manufacturing cost and maintenance cost. <P>SOLUTION: An output command means 41 outputs machining conditions including an output command. A laser oscillator 56 outputs a laser beam while a power unit 55 supplies an excitation electric power to the laser oscillator 56. A power sensor 58 detects the output of the laser beam outputted from the laser oscillator 56. Arithmetic parts 42a, 42b each decide, based on the output command, an input current supplied from the power unit 55 to the laser oscillator in accordance with the machining conditions, calculating a control voltage based on the input current and outputting it to the power unit 55. The arithmetic part 42b processes the output command of a low output having the output command not higher than a prescribed value, while the arithmetic part 42a processes the output command of a high output having the output command higher than the prescribed value. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
