| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser machining head which makes the prevention of dross adhesion and plasma suppression compatible, and carries out machining excellent in productivity and quality.SOLUTION: A laser machining head includes: a condenser lens which condenses laser beams; and nozzles which introduce assist gas, and make the assist gas pass through in injection shaft directions of the collected laser beams. The nozzles are coaxially disposed, and have at least triple or more independent gas channels. The third or outer gas channels from a center, make the gas flow in a slanting direction toward the center, to the second or inner gas channels.SELECTED DRAWING: Figure 1 |
