Sandvik Coromant Silent tools - application guide - Manual (Page 33)

31
2. Milling
Tips and hints, summary
Insert grades and geometries
Choose a small edge rounding (ER). Go from thick coating to a thin
one. If necessary, use uncoated inserts. Use sharp and positive
inserts with chip forming capacity.
Entering angle
The smaller the entering angle, the thinner the chip, and the further
away it will spread along the cutting edge. This allows for higher
feed per tooth. A smaller entering angle will also direct more of the
cutting force in axial direction and reduce the risk of vibration.
Cutter pitch
In most cases a coarse pitch is the best choice for productive
machining with dampened tools. Use a coarse pitch cutter to slow
down changes in the cutting force directions. Reducing the number
of inserts will often enable a significant increase in the axial depth
of cut.
Feed per tooth
A higher feed per tooth may give a constant preload on the machine
tool spindle and prevent it from using the play in its bearings.