| 摘要 |
PROBLEM TO BE SOLVED: To enable laser machining to be performed on a narrow part and to allow a machining part to be adjusted through the inserted quantity of an optical fiber by arranging a distributed refractive index type lens at the laser output end of the optical fiber and condensing the laser beam emitted at a divergence angle. SOLUTION: This laser machining head 1 condenses laser beams having a divergence angle with the use of a distributed refractive index type lens 8 in a condensing optical system, melts the surface of a work as well as the tip end of a filler wire, and feeds it to the melting part of the work. The tip end position of the optical fiber 5 supported by a roller tube 9 can be adjusted by pushing in and out the fiber with the driving device 10 inside a control cabinet 2. The laser machining head 1 is provided with plural optical fibers 15 which are connected to a monitor 17 in the cabinet 2; an image formed by an image fiber 16 is then displayed in a display tube so that the machining state is judged. Thus, the laser machining of a narrow part is made possible, as is the adjustment of a machining part through the inserted quantity of the optical fiber. |
