Smithy GN1300 - Manual (Page 115)

Side Milling Cutters
Similar to plain milling cutters, side milling cutters also have teeth on one or both sides.
The teeth on the periphery do most of the cutting; those on the sides finish the side of
the cut to size. They cut grooves or slots and often work with other cutters to mill
special shapes in one operation.
• Plain side milling cutters have straight teeth on the periphery and both sides.
Side teeth taper toward the center of the cutter, giving side relief or clearance.
• Half side milling cutters have helical teeth on the periphery and one side.
These cutters do heavy-duty face milling and straddle milling where teeth are
needed on only one side. The side teeth are deeper and longer for more chip
clearance.
• Staggered-tooth side milling cutters are narrow cutters with teeth
alternating on opposite sides. There is less dragging and scoring and more space
for chip removal. These cutters do heavy-duty keyway and slotting cuts.
Slitting Saws
Slitting saws do narrow slotting and cut-off operations.
• Plain slitting saws are thin, plain milling cutters with only peripheral teeth.
The teeth are fine, and the sides taper slightly toward the hole, giving side relief.
• Slitting saws with side teeth are like side milling cutters and are for deeper
slotting and cut-off operations normally done with plain slitting saws.
• Staggered-tooth slitting saws have peripheral teeth with alternate right and
left hand helix and alternate side teeth. They are for 0.2” and wider cuts and
may do deeper cuts with standard feeds.
• Screw-slotting cutters are plain slitting saws with fine-pitch teeth that cut
slots in screwheads. Their sides are straight and parallel and offer no side relief.
Angle Milling Cutters
Angle milling cutters, for such operations as cutting V-grooves, dovetails, and reamer
teeth, come as single and double-angle cutters.
• Single-angle cutters have one angular surface. Teeth are on the angular
surface and the straight side, and they usually have 45° or 60° angles.
• Double-angle cutters machine V-grooves. Those with equal angles on both
faces usually have an included angle of 45°, 60°, or 90°.
Appendix A: Machining Reference Guide
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