| 摘要 |
PURPOSE:To prevent spatters that are generated during machining from being stuck on the inside face of a pipe by disposing a body to be stuck having an opening into the pipe to be machined, the opening of the stuck body to opposite to the part to be machined and laser beam matching the tube body. CONSTITUTION:When the pipe 1 is turned in the arrowed direction and cut in the peripheral direction by the laser beams 4. The laser beam 4 that penetrates the pipe 4 is made incident on the inside of the stuck body 6 through the opening 62 provided on the inside of the tube 1. The molten spatters 5 of the pipe 1 descends together with it. The descent spatters 5 is then stuck on the sticking surface 61 of the part 6 to be stuck without sticking to the inside the pipe 1. Thus, the work to remove spatters stuck inside the pipe is no longer required, and the possibility of a trouble due to the spatters 5 is eliminated. |
