| 摘要 |
PURPOSE:To enable downward welding and to automate the welding by positioning strapping metals at the inside and outside collar parts of a large-sized shaft bearing part at right angles to a rotating shaft, and forming welding grooves there. CONSTITUTION:A cylindrical strapping metal 10 having a flange 10a at one end is equipped annularly at a shaft neck part 3 while facing the inside collar part 2 of the bearing part of the large-sized shaft 1 and then fixed with a spacer 11, and a welding groove 12 is formed between the flank of the inside collar part 2 and the inside surface of the flange 10a. An annular metal 13, on the other hand, is equipped annularly at the shaft neck part 3 while facing the outside collar part 4 and a welding groove 14 is formed between the outside collar part 4 and annular strapping metal 13. While the shaft 1 is rotated around the shaft core, downward welding is carried out at the grooves 12 and 14 to deposit raw overlay metal. Then, machine grinding is carried out to obtin the overlay metal in a prescribed shape. |
