YAG LASER BEAM MACHINING HEAD, LASER BEAM MACHINING NOZZLE USED FOR THE HEAD, AND NOZZLE MAGAZINE FOR THE LASER BEAM MACHINING NOZZLE

摘要

PROBLEM TO BE SOLVED: To provide a YAG laser beam machining head capable of rapidly attaching/detaching a nozzle, and the nozzle to be used for the machining head, and to provide a nozzle magazine to hold a plurality of nozzles for exchange. SOLUTION: In a laser beam machining head 1 in which an emission end of an optical fiber to lead the laser beam from a laser beam oscillator to a converging lens is provided at an upper position of the converging lens of the laser beam machining head provided with the converging lens capable of converging the laser beam onto a work, a laser beam machining nozzle fitting hole is provided in an end part of the laser beam machining head below the converging lens, a plurality of ball plungers 11 are provided in the nozzle fitting hole, a conical nozzle 5A provided with an engagement groove 17 capable of being engaged with the ball plunger 11 is freely attached/detached to the nozzle fitting hole, and a flange 19 is provided on the outer circumference in the vicinity of the tip of the conical nozzle 5A.