| 摘要 |
PURPOSE:To allow cutting of even a thick work with a single laser oscillator by providing a half mirror disposed in a laser light path and condenser lenses which are respectively disposed in the transmitted light path therefrom and a reflected light path. CONSTITUTION:The laser light outputted from the laser oscillator 21 is reflected by the half mirror 22 and is focused via the condenser lens 23 disposed in the reflected light path thereof to the focus of the lens matched on the work 24. Further, the laser light outputted from the laser oscillator 21 is reflected by the mirror 25 disposed in the transmitted light path of the half mirror 22 and is focused via the condenser lens 26 disposed in the reflected light path thereof to the focus thereof matched in the work 24. The work 24 can be cut by moving the work 24 in such a manner. The laser light is, therefore, focused to the different positions of the thick work by the condenser lenses of different focal distance. The cutting of even steel tires which are usually difficult to cut is consequently possible. |
