Cutting Feed And Speed Calculations - Mirage MM305i Operation & Maintenance Manual

Cutting feed and speed calculations

To Find Using
Cutting RPM, Dia
speed
RPM V , Dia
Feed rate RPM,
FPT, NT
Feed per FR, RPM,
Tooth NT
Feed / Rev RPM, FR
Metal DC, RC,
removal FR
Horse MR, C,
Power WC,PC
V = cutting speed (m/min or Ft/min)
Dia = Diameter of cutting tool
RPM = spindle revs /min
FPT = Feed per tooth (mm or Inches)
NT = Number of teeth
FR = Feed rate (mm/min or inches/min)
FRR = Feed rate per revolution
DC = axial depth of cut
RC = radial engagement of cut (mm or inches)
MR = Metal removal rate (cm³/min or inches³/min)
HP = horse power (estimate of the power required at the motor assumes 75% efficiency)
C = cutting edge constant (from table 1)
WC = wear constant (from table 2)
PC = power constant (from table 3)
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Metric
m/min V = RPM x 0.00314
x Dia
Revs/min RPM = V x 1000
3.14 x Dia
mm/min FR = RPM x FPT x
NT
mm/tooth FPT =
RPM x NT
mm/Rev FRR = FR / RPM
cm³/min MR = DC x RC x FR
1,000
HP HP = MR x C x WC x
PC x 0.015
Doc: MML265 Issue: 004
English
Ft / min
Revs /min
Inches/min
V___ Inches/tooth FPT =
Inches/Rev
Inches³/min
HP
Issue Date: 13.06.2013
V = RPM x Dia
3.82
RPM = V x
3.82
Dia
FR = RPM x
FPT x NT
V___
RPM x NT
FRR = FR /
RPM
MR = DC x RC
x FR
HP = MR x C x
WC x PC
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