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    • 54. 发明专利
    • Nozzle inspection device and the nozzle inspection method
    • JP4776588B2
    • 2011-09-21
    • JP2007156793
    • 2007-06-13
    • 三菱電機株式会社
    • 茂 横井
    • G01B7/13B23K26/00B23K26/42
    • PROBLEM TO BE SOLVED: To acquire a nozzle inspection apparatus for simplifying a constitution, and accurately and easily inspecting a processing nozzle without damaging the processing nozzle. SOLUTION: The nozzle inspection apparatus for inspecting the processing nozzle in a laser processing machine for implementing laser processing of a workpiece by using the processing nozzle corresponding to a type of a processing treatment comprises: an electrostatic capacitance measuring section 14 for measuring an electrostatic capacitance between the processing nozzle and a tapered gauge 32 having an upper end thinner than a lower end; a processing head control section 12 for controlling a height of the processing nozzle relative to the gauge 32 so as to insert the gauge 32 into a laser exit aperture; a Z-coordinate detecting section 13 for detecting the height of the processing nozzle when the electrostatic capacitance indicates a predetermined preset value; a nozzle determining section 16 for determining whether the processing nozzle has a nozzle inside diameter corresponding to the processing nozzle to be mounted, based on the detected height of the processing nozzle; and a determination result outputting section 18 for outputting a determination result obtained in the nozzle determining section 16. COPYRIGHT: (C)2009,JPO&INPIT