mechanical calculator
Machining Feed Rate Calculator
Calculate table feed in inches per minute from spindle speed, chip load per tooth, and the number of teeth.
How it works
IPM = RPM x chip load per tooth x number of teeth.
Worked example
764 rpm, 0.004 in/tooth, 2 flutes: IPM = 764 x 0.004 x 2 = 6.1 in/min.
When to use it
- Chip load comes from the tool manufacturer's data for your material.
- Set the spindle speed first with the cutting-speed calculator.