| 摘要 |
PURPOSE:To shorten the time for prepn. without having an operator's need for the selection, setting and regulation of an assist gas by commanding the kind, mixing ratio, pressure and flow rate of the gas by a processing program and controlling the assist gas automatically. CONSTITUTION:The processing program is stored from a tape reader or keyboard 22 into a memory 12 and is outputted as the command for the kind, flow rate, pressure, etc., of the gas from a gas control means 11. The assist gas of the kind and mixing ratio by said command is outputted. The flow rate of the gas is then controlled by the voltage command from a flow rate control means 13. The pressure control of the gas is executed by the voltage command from a pressure control means 14. A reflecting mirror 14 reflects the laser light 43 from a laser beam oscillator 50 and guides the same to a lens 42. The laser light 43 is, thereupon, stopped down to create a focus on the work. The assist gas 44 controlled in the flow rate and pressure is supplied to prevent splashing of the splashes generated from the work 45 during process to the lens 42, by which the processing of the work 45 is further assisted. |
