| 摘要 |
A jig is provided for aligning the cutting depth of knife blades on a cylindrical rotary cutter head of a rotary planar machine. The jig has a tripod support adapted for spacing the jig radially over the cutter head. An indexi ng member circumferentially positions the jig with two radially adjustable knif e adjustment members aligned longitudinally and radially over a knife blade. I n use, the jig can be calibrated over a knife blade so that the knife blade can be removed and a replacement knife blade installed with the same radial projection alon g the longitudinal extend of the cutter head. Alternatively, or in addition, each of a plurality of knife blades of a cutter head can be set to the same longitudin al radial projection.
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