Каталог Dormer Pramet фрезерование 2021 - 2022 - страница 784

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FORMULAS
ValueUnitFormula
Number of revolutions[rev/min]vc . 1000 DC .p n =
Cutting speed[m/min]p. DC . n 1000 vc =
Feed per revolution[mm/rev]= fz . z fmin n frev =
Feed per minute (speed of feed)[mm/min]fmin = vf = frev . n = fz . z .n
Feed per tooth[mm/tooth]fz = frev z = fmin n . z
Chip cross section[mm2]A = fz . ap
Chip thickness (for inserts with a straight edge)[mm]h = fz . sinkr
Chip thickness (for round cutting inserts)[mm]h = ap INSD fz .
Metal removal rate[cm3/min]Q = ap . ae . fmin 1000
Power demand[kW]Pc = ap . ae . fmin 60 . 106.h . kc . kγ
Approximate power demand[kW]Pc = ap . ae . fmin x

Note:

QuantityUnit
nNumber of revolutions[rev/min]
DCDiameter (of tool or work piece)[mm]
vcCutting speed[m/min]
frevFeed per revolution[mm/rev]
AChip cross section[mm2]
apAxial depth of cut (depth of cut)[mm]
aeRadial depth of cut (width of cut)[mm]
krSetting angle[°]
fminFeed per minute (sometimes called speed of feed)[mm/min]
fzFeed per tooth[mm/tooth]
zNumber of teeth[-]
INSDDiameter of insert[mm]
QuantityUnit
hChip thickness[mm]
QMaterial removal rate per minute[cm3/min]
PcPower demand[kW]
kcCutting force per mm2[MPa]
kγCoefficient of influence of angleγ0[°]
hMachine efficiencyusually h= 0,75[-]
xCoefficient of influence of work piece material[-]
MaterialSteelCast ironAl
Coefficientx24 00030 000120 000