| 摘要 |
PURPOSE:To maintain working accuracy such as perpendicularity between members to be welded at high accuracy. CONSTITUTION:Projection welding is taken as the welding method and a shaft 72 is welded and fixed to a tabular plate 70 so as to stand upright. In welding, a projection 34' is formed on the plate 70 side and an annular recessed groove 60' is formed on the welding surface corresponding to the position projection 34' on the shaft 72 side. When welding is performed, the projection 34' is abutted on the surface surrounded by the recessed groove 60', these members are pressed between fixed and movable electrodes and a DC current is supplied between the electrodes to perform welding. The projection 34' and the vicinity of the part on which this abuts are melted by the supply of the current and plate 70 and the shaft 72 are welded together. At this time, melt flows into the recessed groove 60' and is prevented from flowing out to the outside. As a result, the plate 70 and the shaft 72 can be welded and fixed together with high prpendicularity. |
