| 摘要 |
PURPOSE:To manufacture easily with the necessary size setting and to make the cost inexpensive by manufacturing a flange member and web member with performing mechanically in order the assembly, welding, straightening, piercing and cutting. CONSTITUTION:A web member A is pressed to a restricting member 25 and held vertically on a flange member B1. The member A is pressed to a set roller 41 via a presser roller 43. An end tab member is welded to the tip part and rear end part and the prescribed places of both faces are spot-welded. The flange member B1 is then held by holding arms 73, 73 with turning over and placed on the flange member B2 of other part and welded provisionally with intermittent welding. A fillet welding of one side face is performed by the twin-tandem torch of manipulators 77, 81 with turning over horizontally then, the fillet welding of the other side face is performed with turning over further. The thermal strain of the flange member B is corrected by a straightener 11 with vertical holding, a piercing is made on the prescribed place by a multi- spindle piercing device 13 and it is cut to the prescribed size by a band saw device 15. |
