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Free CNC tool

Cutting parameters calculator

Convert cutting speed into spindle speed and feed for milling, drilling or turning in metric or imperial units.

Milling · drilling · turningRPM and feedMaterial removal rateLocal calculations

NCTune CNC Toolbox

From catalogue data to machine parameters

Enter cutting speed, diameter and feed per tooth or revolution. The calculator returns spindle speed, linear feed and an estimated material removal rate.

Formula and terminology reference: Sandvik Coromant.

Milling

Table feed follows from spindle speed, active tooth count and feed per tooth fz.

Drilling and turning

For these operations linear feed is calculated from feed per revolution fn.

Starting point

Compare the result with the tool catalogue, setup rigidity and machine limits.

FAQ

Frequently asked questions

Where should cutting speed Vc come from?

Use the tool maker's catalogue for the actual work material, insert grade, geometry and coolant conditions.

Does the calculator select parameters for a material?

No. It converts process data into RPM, feed and MRR; it does not replace tool-maker recommendations.

NCTune

Need a calculator tailored to your process and machine fleet?

NCTune develops automation, calculators, postprocessors and tools for Siemens NX CAM and production.

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