Feed refers to the depth of penetration of the tooth
into the material being cut. For cost effective cutting,
you want to remove as much material as possible as
quickly as possible by using as high a feed rate/pressure
as the machine can handle. However, feed will
be limited by the machinability of the material being
cut and blade life expectancy.
A deeper feed results in a lower shear plane angle.
Cutting may be faster, but blade life will be reduced
dramatically. Light feed will increase the shear plane
angle, but increase cost per cut.
How can you tell if you are using the right feed rate?
Examine the chips and evaluate their shape and color.
See chip information