Chip load calculator back-solves feed per tooth from a known feed rate, spindle RPM, and number of flutes, useful for checking whether an existing program matches a recommended chip load.
Back-solve chip load (feed per tooth) from a known feed rate, spindle RPM, and flute count, useful for checking whether a programs feed rate matches the recommended chip load.
Formula: Chip Load = Feed Rate divided by (RPM times Number of Flutes). Also called feed per tooth.
How it works
Chip load (feed per tooth) is the thickness of material each cutting edge removes per revolution. Rearranging the feed-rate formula isolates it so a program can be checked against a tools recommended range.
FAQ
Chip load vs. feed per tooth, same thing? Yes, same value, two common names for it.
Related Guides
How it works
Chip load (feed per tooth) is the amount of material each individual flute removes per revolution, and it’s the number tool manufacturers publish speed and feed charts around. Given a feed rate that’s already programmed, dividing by RPM and flute count reverses the usual calculation to reveal the effective chip load being used.
FAQ
Why would I calculate chip load instead of just setting feed rate directly? It’s useful for verifying an existing or borrowed program against a tool manufacturer’s recommended chip load, or for checking whether a chatter or premature wear problem traces back to running outside the tool’s intended range.
Related Guides
CNC Calculators · Feed Rate Calculator · Spindle RPM Calculator