CNC Kalkulator

Feed Rate

Calculates feed rate from tooth feed, tooth count, and spindle speed, or tooth feed from a known feed rate.

Machine

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How to use the result

Obtain feed per tooth from the tool manufacturer catalogue or the cutting-data calculator. It usually applies to full-width engagement; at a smaller width of cut, increase it to compensate for chip thinning.

For turning and drilling, use feed per revolution rather than feed per tooth. The feed-conversion tool converts between these values.

Formulas

vf = fz · z · nfz = vf / (z · n)fn = fz · z

Sources: Sandvik Coromant: Formulas and definitions for milling (Table feed); Tabellenbuch Metall: feed speed in milling

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