| 摘要 |
PURPOSE:To facilitate the manufacture of the bracket in the caption, by placing the seam of a cylindrical member formed of a rolled steel plate in the center of the circular arc edge of a bracket and welding the bracket to the circular arc edge by a resistance welding. CONSTITUTION:A steel plate is rolled in a cylindrical member 1, while projections and recesses 3d, 3c are formed on the circular arc edge 3b of a bracket 3. The seam 1a of the cylindrical part 1 is placed in the center of the circular arc edge 3a of the bracket, and the bracket member 3 and the circular arc edge 3a are connected with each other at the projections and the recesses 3d, 3c on the circular arc edge 3b by use of a projection resistance welding. Accordingly, the cost of connecting the cylindrical part to the bracket can be reduced. |
