| 摘要 |
<p>A portable workbench has horizontal extension beams at one or both ends, with the extension beams carrying one or more slidable and height-adjustable workpiece supports. The extension beams are horizontally retractable into the workbench, and when extended may cantilever from the workbench or may be vertically supported by retractable auxiliary support legs. Each extension beam may comprise multiple telescoping tubular members, each carrying a separate workpiece support. The workbench preferably incorporates a wide-jaw vise having a movable jaw assembly with inner and outer ends, with the front face of the workbench serving as a fixed vise jaw. The movable jaw assembly is movable relative to the workbench, and its inner end is movable relative to its outer end. To accommodate irregularly-shaped workpieces, the position of the movable jaw assembly is differentially-adjustable relative to the workbench, and its inner end is preferably is differentially adjustable relative to its outer end.</p> |
