| 摘要 |
PURPOSE:To enable a piece made of Al and the like to be clamped by providing a shaking stop device, a vacuum sucking device and the like, positioning a petal like piece of LNG globular tank and the like on the table, and vacuum-clamping the piece from below. CONSTITUTION:A standard seat 5 and a moving holding apparatus 6 are raised and a work 4 is placed on them, on the basis of the scribed lines marked on the work. Then, only the seat 5 is released down and the work 4 is held so as to move freely in both longitudinal and lateral the directions by means of the apparatus 6. Next, first and second centering apparatuses 7a, 7b are raised as well as driving rollers of these apparatus above are driven to position the work 4 in both longitudinal and lateral directions. These apparatuses are released down while a suction apparatus 9 of a large diameter is raised to hold the work instead. The work drops together with the apparatus 6 and is pushed on the seat 5 to be positioned. A suction apparatus 10 of a small diameter is raised to vacuum-hold the work 4 and a shaking stop device 8 is raised to hold the circumference of the work 4 from below. Then, the apparatus 10 is dropped to push the circumference of the work 4 against the device 8. |
