The practical idea
Cutting speed describes the relative surface movement between the cutting edge and the work. Appropriate speed depends on workpiece material, tool material, coating, coolant, machine rigidity and the type of operation.
What changes the real result?
Start from trustworthy tool-manufacturer data, then reduce the starting value for uncertain workholding, interrupted cuts, long overhang or limited coolant.
A reliable workflow
- Confirm the units, material and operating conditions.
- Use a suitable formula or reference as a starting point.
- Compare the estimate with manufacturer data and applicable standards.
- Measure the real result and record any corrections for repeat work.
Apply the guide
Related calculators.
Machining
Surface Speed Calculator
Calculate cutting surface speed from tool or workpiece diameter and RPM.
MachiningSpindle RPM Calculator
Calculate spindle RPM from cutting speed and tool or workpiece diameter.
MachiningFeed Rate Calculator
Calculate milling feed rate from RPM, flute count and chip load.