hobbler

noun [专属名词]无执照的引航员；跛行之人或动物

Hobbing is a machining process for gear cutting, cutting splines, and cutting sprockets using a hobbing machine, a specialized milling machine.
滚齿机是一种使用滚齿机（一种专门的铣床）切割齿轮、切割花键和切割链轮的加工过程。