| 摘要 |
The vacuum securing arrangement is for securing items, such as workpieces to be operated upon, jigs, fixtures and power tools and comprises a substantially flat work surface 4 formed with a plurality of recesses 6 which are defined by apertures, or which are in fluid communication with apertures 10, adapted to be connected to a vacuum source so that the item may be held against the work surface by means of reduced pressure within the opening. Each aperture 10 is provided with a valve 18 for opening and closing the aperture so that the number of openings which are exposed to the vacuum source can be varied in accordance with the size and shape of the item. Preferably, the valves are automatic valves which automatically move to an open position when covered by a portion of the item, and automatically move to a closed position when uncovered. <IMAGE> |
