Calculating Feed Rate for Circular Interpolation

Categories: Milling Tips

First, calculate the feed rate in Inches Per Minute (IPM) for a straight tool path.

For an internal hole use this formula:

Optimized Feed (IPT) = (Major Diameter - Cutter Diameter) / (Major Diameter x IPM)

For an external path, use this formula:

Optimized Feed (IPT) = (Major Diameter + Cutter Diameter) / (Major Diameter x IPM)