| 摘要 |
PURPOSE:To perform welding with high accuracy and decreased man-hour by superposing a preceding metallic sheet and a succeeding metallic sheet to two layers, cutting the sheets by a laser beam, butting the cut ends to each other and welding the butt parts by the laser beam. CONSTITUTION:The preceding metallic sheet 1 and the succeeding metallic sheet 2 are superposed into two layers and are clamped by a clamp 3 on an outlet side and a clamp 4 on an inlet side. Oxygen is supplied in this state to a gas supply port 8 of a laser working head 7 then the sheet 1 and the sheet 2 are cut by the laser beam. The clamp 3 and the clamp 4 are moved to butt the cut faces of the sheet 1 and the sheet 2. Gaseous argon or helium is supplied to the port 8 of the head 7 and the head 7 is moved on a weld line 9 to weld the butt ends by the laser beam. |
