| 摘要 |
PURPOSE:To obtain a titled equipment for eliminating a waiting time for shifting and improving the working efficiency by constituting the equipment so that a movement of a working table is started as soon as a detecting output becomes a drilling completion output value, in the working device for comparing and operating a feedback quantity of a discharge current and an output set quantity. CONSTITUTION:An output detecting element 12 is added to a conventional laser beam machining equipment for detecting a feedback quantity of a discharge current by a current detecting element 5, comparing and operating 4 it with an output set quantity from an external regulator, etc., and controlling an output of a laser oscillator 3. An output value in the course of drilling of an object 8 to be worked is a small output value due to a feedback of a part of the output, but it becomes a prescribed output value as soon as the drilling is completed. Its output variation is detected by a storing circuit 13 and an operating circuit 14, and drilling is converted to cutting by a movement 11 of a table. A waiting time of the time of shifting to cutting from drilling is reduced remarkably, and the laser working efficiency is improved. |
