| 摘要 |
<p>A workpiece holder and feeder mountable on a rectangular base of a machine tool, comprises a pair of parallel cross-bars engagable with two opposed sides of the base, and a pair of angle bars fixed at the opposite ends of each cross-bar, each angle bar having a leg fixed to the respective cross-bar, and another leg engagable with the remaining two opposed sides of the base. A pair of parallel guide bars are fixed to the cross-bars parallel to the latter leg of the angle bars. The holder further includes a table for supporting the workpiece and slidable on the base between the guide bars towards the machine tool, a cable having one end fixed to one of the bars, a weight suspended from the opposite end of the cable, and a plurality of rollers engaging an intermediate portion of the cable such that the weight applies a continuous and uniform feeding force, as the weight lowers, to feed the table and the workpiece carried thereon towards the machine tool.</p> |
