| 摘要 |
<p>A trimming apparatus (10) uses a steerable cutting tool, preferably a rotary cutter wheel (72), guided by dual followers (60, 82) engaging a cam (30, 38) to trim a multidimensional edge of a workpiece during longitudinal motion of a carrier. A second cam and follower normal to the first moves the cutting tool and first cam laterally to follow three-dimensional variations in the workpiece edge. Preformed film workpieces (96) may be supported by a shaped vacuum nest (88) with clamps (102) for holding excess material during its removal by trimming. An alternative embodiment wherein servo motor controlled screw drives (84), driven by program controlled servo motors (134) and a controlled servo motor drive (128) for the rotatable tool holder (64), are used in place of the cams and followers. Methods involve moving a cam guided and steered cutting tool along a multidimensional edge to be trimmed while being supported by a cut resistant backing (108).</p> |
