Rake face (or face): the surface along
which the chip flows
Flank: the surface ground back to clear
the new or machined workpiece surface
Undeformed chip thickness: the depth
of the individual layer of material
removed by the action of the tool
Rake angle (or working normal rake):
the angle between the tool face and a
line perpendicular to the new work
surface
Cl l earance angle ( ki l (working normal
clearance): the angle between the flank
and the new workpiece surface