| 摘要 |
An apparatus for cutting an arcuately-shaped worm includes a support shaft adapted to carry a worm blank thereon and journalled in a frame which is mounted for pivotal movement about a fixed axis so that the worm blank may be simultaneously rotated on its axis and arcuately translated about the fixed axis relative to a cutter. The shaft is rotated by a drive means, and arcuate translation of the shaft is provided by a worm gear which is journalled in the frame and driven off the shaft, with the worm engaging a fixed gear segment, so the rate of rotation and of arcuate translation are coordinated.
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