| 摘要 |
PURPOSE:To accurately weld members to be welded at the prescribed position. CONSTITUTION:Irradiated surface 12 in the members 11, 10 to be welded is formed on rough surfaces and recessed surface parts are made to welded object surfaces 12a matched to the focus F of a condenser lens 14 of a beam welding apparatus and further, the projecting surface part is made to non-welding surface 12b of the position shifted to front side of the above focus F. At the time of shifting the members 10, 11 to the arrow Y direction as show in the figure under the condition of irradiating the high energy density beam 13 onto the irradiated surface 12 with the fixed irradiation quantity with the beam welding apparatus, by focussing the above high energy density beam 13 on the welding object surface 12a of the above irradiated surface 12, the welding is executed, and further, as the non-welding surface 12b is out of focus, shortage of the irradiation is developed and the welding is not executed. |
