| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a laser beam machining head possible to cut a thick plate equivalently to a high output laser beam machine with about 6 kW in an intermediate output laser beam machine with an about 2 kW output. SOLUTION: In this laser beam machining head 1 for laser beam machine, an optical system 35 for eccentricity, making a laser beam LB eccentric from the optical axis 45 of an optical system for convergence to the downward position of the optical system 7 for laser beam convergence, is provided on a hollow rotating shaft 15. The optical system for eccentricity, is provided at an inclined angleαto the optical axis of the optical system for convergence. In the laser beam machining head on which an assist gas nozzle 41 making a laser beam from the optical system for eccentricity pass through and injecting coaxially assist gas, is provided, an air turbine 9 rotated and driven, making the optical axis of a hollow rotating shaft an axis, on which the optical system for eccentricity is provided, is provided.</p> |
