| 摘要 |
PURPOSE:To discriminate a working state easily, quickly and in a short time by detecting by a sensor an infrared ray, a thermion, etc. which are generated from a molten object in the periphery of a working hole, and discriminating a piercing working state, when irradiating a high energy beam. CONSTITUTION:Piercing working is executed to an object to be worked, by using a high energy beam 3 outputted from a high energy beam generating device 1, based on a command of an output control device 2. In this case, when executing the piercing working, an infrared ray and a thermion 6 which are generated from a molten object in the periphery of a working hole 5 are detected by a sensor 7. Subsequently, a working state discriminating device 8 discriminates a piercing working state based on a trigger signal 9 from the control device 2 and a detecting signal 13 from the sensor 7. In this way, the working state can be discriminated easily, quickly and also in a short time by a non-contact system. |
