Общий каталог Palbit - страница 128

CUTTING DATA CALCULATION POWER REQUIREMENT CALCULATION
A Cálculo de condições de corte | Cálculo de datos de corte Cálculo de potência requerida | Cálculo del requerimiento de potencia A
Calculating the power demand
Formulas
Pc - Power (kW)
MILLING


MILLING
ap - Depth of cut (mm)
Spindle Speed (rev/min) ap x ae x vf ae - Width of cut (mm)
vc . 1000 Pc =
60 000 000 x
x kc ae
vf - Feed speed (mm/min)
n =
π . Dc
- Efficiency
kc - Cutting force per mm²
Overview


Overview
Cutting Speed (m/min)
n . π . Dc
Face milling


Face milling
vc =
1000
Calculating average chip thickness (hm) and cutting force per mm² (kc)
Feed Speed (mm/min) Feed per Revolution (mm/rev)
Hifeed milling


Hifeed milling
vf = n . Zn . fz f = Z n . fz hm - Average chip thickness (mm)
360 x fz x ae fz - Feed per tooth (mm/tooth)
hm = x sin kr Dc - Cutter diameter (mm)
Shoulder milling


Shoulder milling
Feed per Tooth (mm/tooth) Metal removal Rate (cm³/min) π x Dc x ωe ωe - Engagement angle
vf kr - Lead angle
fz = ae . ap . vf
n . Zn Q =
Profile milling


Profile milling
1000 1 mc* - Exponent
kc = x k cx
hm m c kcx* - Cutting force for 1 mm chip thickness (N/mm²)
* Please see these values on page 797.
Cutting Speed and Spindle Speed for Copying
Hardmill


Hardmill
Engagement angle
Center & Chamfer


Center & Chamfer
Nomenclature ωe
ae - Width of cut mm/radial depth of cut (mm)
Spot face


Spot face
ap - Depth of cut mm/radial depth of cut (mm)
n . π . Dw
Dc - Cutter diameter (mm)
vc = (m/min) f - Feed per Revolution (mm/rev)
1000
End Mills


End Mills
fz - Feed per Tooth (mm/tooth)
Engagement Engagement Engagement Engagement
vc . 1000 n - Spindle Speed (rev/min)
n = (RPM) ae / Dc angle ωe ae / Dc angle ωe
π . Dw Q - Material removal Rate (cm³/min)
Spare parts


Spare parts
70% 89º 5% 26º
Vc - Cutting Speed (m/min) 100% 180º 10% 37º
Dw = 2 . √ap (Dc-ap) (mm) Vf - Feed Speed (mm/min) 75% 60º
Zn - Nº of theeth
Technical Data


Technical Data
A - 252 A - 253