| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle capable of preventing adhesion of spatters, powder dust, and the like scattering obliquely upward and carrying out effective cooling.SOLUTION: A nozzle detachably attached to a tip end of a processing head main body of a laser processing head includes: a concave portion 21 provided in an upper surface of a nozzle main body 17 that includes a male screw 19 fixedly screwed with the processing head main body 5 on the upper surface, and receiving a fluid ejected from the processing head main body 5; an inclined surface 25L of a circumferential groove 25 provided in an outer peripheral surface of the nozzle main body 17 near the tip end portion of the processing head main body, the inclined surface 25L being inclined toward the upper surface; and a plurality of communication holes 27 provided in the nozzle main body 17, and communicating the concave portion 21 with the circumferential groove 25. An outer surface of a lower end downward of the circumferential groove 25 is hard chromium plated for preventing adhesion of spatters. |
