HFM (High Feed Milling) Calculator

Inputs

Tool Diameter D

Insert Corner Radius R optional

Axial Depth of Cut ap

Radial Depth / Stepover ae

Tool Stickout / Overhang L

Engagement Preset κr (deg)

Number of Flutes/Inserts Z

Speed Input

RPM

Feed Input

Target h

Material

Specific Cutting Force Kc (N/mm²)

Kienzle Exponent mc

Machine Efficiency η

Results

Lead Angle κr

–

Feed per Tooth fz

–

Chip Thickness h

–

Chip Width b

–

Feed Rate Vf

–

MRR

–

Teeth Engaged Simultaneously

–

Cutting Power Pc

–

Spindle Torque

–

Tangential Cutting Force Ft

–

Radial Deflection Force Fr

–

Axial Deflection Force Fa

–

Tool Radial Deflection δ (E≈200 GPa)

–

Tool radial deflection is a cantilever-beam approximation (δ = Fr·L³ / 3EI) assuming a solid round tool/holder makeup with an elastic modulus of ~200 GPa (typical steel shank); actual deflection varies with tool material, holder type, and clamping.