| 摘要 |
A power translation and rotation apparatus for an air float fixture support system of the type including a table having an upwardly facing upper surface adapted for supporting a workpiece fixture thereon, and a pressurized fluid system for supplying a cushion of pressurized air or other fluid between the surface of the table and the workpiece fixture so as to floatingly support the fixture thereon for virtually friction-free movement. The power translation and rotation apparatus generally comprises a single pin translatably and rotatably mounted within the table and having a portion thereof extending upwardly from the table surface, and motor-gear or hydraulic direct drive arrangements within the table for translating and rotating the pin about respective axes normal to the upper surface of the table. The pin is suitably shaped so that it is keyed to an opening in the lower surface of the fixture thereby causing the fluid supported fixture to be translated and rotated in unison with the pin. In a preferred form of the invention, the pin is provided with a square-shaped upper end having a side length equal to the width of the slot, and is provided with a retractable inner pin, with the outer pin also being retractable. The invention is also adaptable to a mechanical conveyor system so that the pin can engage a fixture on the conveyor, and translate and rotate it on to the main portion of the table in the vicinity of the machine tool.
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