Robot Mechanisms and Mechanical Devices Illustrated - Profe Saul

120 Chapter 3 Direct Power Transfer Devices
Face Splines
Figure 3-41 Milled Slots in hubs
or shafts make inexpensive connections.
This spline is limited to
moderate loads and requires a
locking device to maintain positive
engagement. A pin and
sleeve method is used for light
torques and where accurate positioning
is not required.
Figure 3-42 Radical Serrations
made by milling or shaping the
teeth form simple connections.
(A) Tooth proportions decrease
radially. (B) Teeth can be straightsided
(castellated) or inclined; a
90º angle is common.
Figure 3-43 Curvic Coupling teeth are machined by a face-mill cutter. When hardened
parts are used that require accurate positioning, the teeth can be ground. (A) This
process produces teeth with uniform depth. They can be cut at any pressure angle,
although 30º is most common. (B) Due to the cutting action, the shape of the teeth will
be concave (hour-glass) on one member and convex on the other—the member with
which it will be assembled.