stocking cutter

stocking cutter

[′stäk·iŋ ¦kəd·ər]
(mechanical engineering)
A gear cutter having side rake or curved edges to rough out the gear-tooth spaces before they are formed by the regular gear cutter.
A concave gear cutter ganged beside a regular gear cutter and used to finish the periphery of a gear blank by milling ahead of the regular cutter.