| Type of Angle |
Symbol |
Function |
Effect |
| Axial Rake Angle |
A.R |
Determines chip disposal |
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. |
|
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