Cutting Tool Formulas
| To Find |
Using |
Formula |
SFM = Surface Feet Per Minute
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RPM = Revolutions per Minute
Dia = Tool Diameter
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RPM / 3.82 x Dia = SFM
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RPM = Revolutions per Minute
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SPM = Surface Feet per Minute
Dia = Tool Diameter
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SFM x 3.82 / Dia = RPM
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IPM = Inches per Minute
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RPM = Revolutions per Minute
IPT = Inches per Tooth per Rev
#FL - # of Cutting Flutes
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RPM / IPT x #FL = IPM
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IPT = Inches per Tooth
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IPM = Inches per Minute
RPM = Revolutions per Minute
#FL - # of Cutting Flutes
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IPM / RPM / #FL = IPT
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IPR = Inches per Revolution (feed rate)
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IPM = Inches per Minute
RPM = Revolutions per Minute
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IPM / RPM = IPR (FR)
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MR = Metal Removal Cubic Inches per Minute
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ADC = Axial Depth of Cut
RDC = Radial Depth of Cut
IPM = Inches per Minute
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ADC x RDC x IPM = MR
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HP = Horsepower Machine Horsepower Required
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IPM = Inches per Minute
RDC = Radial Depth of Cut
ADC = Axial Depth of Cut
PC = Power Constants
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IPM x RDC x ADC x PC = HP
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PC = Power Constraints for HP
HP / CL - MR
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