MITSUBISHI MATERIALS CORPORATION
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FUNCTION OF TOOL FEATURES FOR FACE MILLING

FUNCTION OF EACH CUTTING EDGE ANGLE IN FACE MILLING
Each Cutting Edge Angle in Face Milling
Type of Angle Symbol Function Effect
Axial Rak
Angle		 A.R Determines chip disposal direction.
Positive:
Excellent machinability.
Radial Rake
Angle		 R.R Determines sharpness.
Negative:
Excellent chip disposal

Corner

Angle

 CH Determines chip thickness.
Large:
Thin chips and small cutting impact.
Large back force.
True Rake
Angle		 T Determines actual sharpness.
Positive(large):
Excellent machinability.
Minimal welding.
Negative(large):
Poor machinability. Strong cutting edge.
Cutting Edge
Inclination		 I Determines chip disposal direction.
Positive (large):
Excellent chip disposal.
Low cutting edge strength.