MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 2
CONCAVE, CONVEX, AND CORNER ROUNDING MILLING CUTTERS.
Gear Hob. The gear hob (figure 31) is a formed-tooth milling cutter
with helical teeth arranged like the thread on a screw.
These teeth are
fluted to produce the required cutting edges. Hobs are generally used for
such work as finishing spur gears, spiral gears, and worm wheels. They may
also be employed for cutting ratchets and spline shafts.