LASER WORKING MACHINE

摘要

PURPOSE:To realize high efficiency working in two orthogonal directions in a working machine using a linear polarization type laser oscillator by controlling selectively the plane of polarization corresponding to the two orthogonal working directions. CONSTITUTION:The laser light 2 emitted from a linear polarization type laser oscillator 1 is bent to a working point by a total reflection mirror 3, a condensed by a condenser lens 4 and is irradiated to a work 5. The cutting in a Y direction is accomplished by this optical system. A total reflection mirror 9 is moved instantaneously to 91 and a total reflection mirror 92 to 93 so that the optical path is changed to be passed through a pi/2 delayed phase mirror 10 called as ''Fresnel rohmb'' and to be made incident to the lens 4 in the case of working in an X direction. The scanning direction and the plane of polarization are thus so controlled as to coincide. The cutting of the work 5 is therefore equal in both cutting widths 6, 61 in the X- and Y directions and the narrow high speed cutting is made possible in both X- and Y directions.