Page 571 - Ceratizit Catalog

Formula collection
B244
Formulas, material designation & dimensions

Cutting speed [m/min] Material designations & dimensions

d 1 π n
v c = a Cutting width [mm]
e
1000
a Depth of cut [mm]
p

-1
Revolutions of spindle [min ] d Cutter diameter [mm]
1

v c 1000
n = D Work piece diameter [mm]
w
d 1 π
f Feed per tooth [mm]
z

Feed per tooth [mm] h Medium chip thickness [mm]
m

v f
=
f z k Number of insert rows
nz

2
k Specific cutting force [N/mm ]
c

Feed rate [mm/min] 2
k c1.1 Specific cutting force for 1 mm chip cross section
2
[N/mm ]
v f = f z n z

l Length of wiper facet [mm]
1

m Increase of specific cutting force
Feed per revolution [mm] c

-1
f = f z z n Revolutions of spindle [min ]

P mot Power consumption [kW]

3
3
Metal removal rate [cm /min] Q Metal removal rate [cm ]

v Cutting speed [m/min]
a p a e v f c
Q =
1000
v Feed rate [mm/min]
f

z Effective numer of edges [pcs.]
Medium chip thickness [mm]:

f
κ
sin() 180 a z η Mechanical efficiency [%]
m
e
=
h m
arcsin ( a e ) γ Perpendicular rake angle (effective rake angle) [°]
π d 1 0
d 1
γ Lateral rake angle (radial rake anglel) [°]
Specific cutting force f

-mc γ Tool back clearance (axial rake angle) [°]
k c = h m k c1.1 p

γ Rake angle of the insert [°]
w

κ Cutting edge angle (approach angle) [°]
Power consumption [kW]
λ Inclination angle [°]
s
a p a e v f
P mot = k c
6
60 10 η m a Clearance angle [°]

a Clearance angle of the corner facet [°]
1
Milling / Technical information