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Home > Ordnance Documents and other related manuals > > Figure 30 Concave, Convex,and Corner Royunding milling Cutters
Figure 29. Single- Angle Milling Cutters.
Figure 32. Fly Arbor And Fly Cutters

Milling Machine Operations
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MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 2
FIGURE 30.
CONCAVE, CONVEX, AND CORNER ROUNDING MILLING CUTTERS.
(k)
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.
FIGURE 31.
GEAR HOB.
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