CNC Kalkulator
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Cutting Data: Turning

Created on · turning-cutting-data

Cutting Data: Turning

Determines spindle speed, feed, material removal rate, and cutting time per pass for longitudinal turning from material, diameter, and feed.

Material and workpiece
Cut
Custom values
Machine

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Cutting Data FinderDisplays recommended ranges for cutting speed and feed including start, minimum, and maximum values by material, operation, and tool. Constant Cutting SpeedCalculates spindle speeds at constant cutting speed with a fixed machine limit. Cutting Force per KienzleCalculates the specific cutting force per Kienzle from material, uncut chip thickness, and width of cut for turning and milling. Cutting PowerDetermines net power, drive power, and torque from material removal and specific cutting force. Material Removal RateCalculates material removal rate for milling, turning, and drilling, the required power, and MRR per kilowatt.

How to use the result

The database values apply to coated carbide indexable inserts. Roughing uses the lower cutting speed and upper feed; finishing uses the reverse.

During facing and parting off, the diameter decreases. Use constant cutting speed (G96) with a spindle-speed limit.

When finishing, insert nose radius determines the achievable surface finish: feed should be substantially smaller than the nose radius. Use the surface-finish calculator to calculate roughness.

Formulas

n = vc · 1000 / (π · D)vf = f · nQ = vc · ap · fh = f · sin κ, b = ap / sin κth = (L + la + lu) / (f · n)

Sources: Sandvik Coromant: Formulas and definitions for turning (vc, n, Q); Tabellenbuch Metall: cutting parameters and primary machining time in turning

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