| 摘要 |
PURPOSE:To automate welding work of an aggregate structure and to improve its efficiency by allowing a carriage on which a welding robot is loaded to travel between longitudinal frames and determining the welding position by prescribed arm at the time of welding an intersection part between the vertical frames and horizontal frames. CONSTITUTION:Vertical plates 2 and horizontal plates 3 are crossed at right angles on a bottom plate 1 and a slot part is formed and the carriage 11 on which the welding robot 12 is loaded is fixed on the bottom plate 1 between the vertical plates 2 by operation of a hoist. Pinions 28a-38d are rotated at the same time via a gear 30, a belt 32 and a bevel gear shaft 29 by the driving of a motor 33. As a result, pushing- out arms 37a-37d are pushed out to the side by the same quantity and stretched between the vertical plates 2 and the travelling direction of the carriage 11 is paralleled to the vertical plates 2. Then, when the pushing-out arm 37 is contracted and a projecting arm 39 is projected by the prescribed quantity and the carriage 11 is allowed to travel in direction of the horizontal plates 3 and the horizontal plates 3 are detected by a touch sensor 38, the carriage 11 is stopped. Next, the projecting arm 37 is contracted and the pushing-out arms 37a-37d are again pushed out and the position of the carriage 11 is corrected and the slot part is automatically welded by a welding torch 25. |
