RPM = (SFM × 12) / (DIA × π)
IPM = # Teeth × Chip Load × RPM
IPM = # Teeth × Chip Load × RPM
Results
HEM Chip Load = (Max Chip Load × DIA) / (2 × √(DIA × RDOC − RDOC²))
Compensates feed for radial depth of cut < ½ DIA
Compensates feed for radial depth of cut < ½ DIA
Results
Circumference = π × Part DIA
Feed (deg/min) = IPM / (Circ / 360)
Feed (deg/min) = IPM / (Circ / 360)
Results
Lookup table: RPM = (SFM × 12) / (DIA × π)
Std (pt/hr) = (60 / Cycle Time) × Efficiency
Hrs Earned = Parts Run / Std
% Std = Hrs Earned / Hrs Run
Hrs Earned = Parts Run / Std
% Std = Hrs Earned / Hrs Run
:
Minutes : Seconds
Allowance for setup, tool changes, breaks (0.80 = 80%)
:
Results
Fi = Fe × (R − r) / R
Fe = IPR × RPM · R = part radius · r = cutter radius
Internal arc: Fi is the slower programmed feed
Fe = IPR × RPM · R = part radius · r = cutter radius
Internal arc: Fi is the slower programmed feed
Results