FUNCTION OF TOOL FEATURES FOR TURNING

Rake angle is cutting edge angle that has a large effect on cutting resistance, chip disposal, cutting temperature and tool life.

1. Increasing rake angle in the positive (+) direction improves sharpness.

2. Increasing rake angle by 1° in the positive (+) direction decreases cutting power by about 1%.

3. Increasing rake angle in the positive (+) direction lowers cutting edge strength and in the negative (-) direction increases cutting resistance.