Page 95 - Carboloy Catalogue - English

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milling cutters
milling inserts
turning holders
turning inserts
techNICAL info
97
Quantity
Formula
Unit
Note
Number of revolutions
[rev.min
-1
]
Cutting speed
[m.min
-1
]
Feed per revolution
[mm.rev
-1
]
Feed per minute
(Linear Feedrate)
[mm.min
-1
]
Max. height of profile R
max
[µm]
Surface finish
R
a
[µm]
Chip cross section
[mm
2
]
Chip thickness
(For insert with straight
edge)
[mm]
Chip thickness
(For round cutting insert)
[mm]
Metal removal rate
[cm
3
.min
-1
]
Power demand
[kW]
Approximate
power demand
[kW]
formulae for calculation of cutting parameters
f
min
= v
f
= f
ot
. n
v
c
. 1000
D .
π
n =
f
min
n f
ot
=
π
. D . n
1000
v
c
=
125 . f
ot
2
r
e
R
max
=
43,9 . f
ot
1,88
r
e
0,97
R
a
=
h = f
rev
. sin
κ
r
h = a
p
D
f
rev
.
A = f
rev
. a
p
Q = a
p
. f
rev
. v
c
a
p
. f
rev
1-c
. k
c1
. v
c
.
κ
r
6 . 10
4
.
η
P
c
=
a
p
. f
rev
. v
c
x
P
c
=
Material
Steel
Cast iron
Al
Coefficient
x
24 000
30 000
120 000
n
Number of revolutions
[1.min
-1
]
D
Diameter
(of tool or workpiece)
[mm]
v
c
Cutting speed
[m.min
-1
]
f
rev
Feed per revolution
[mm.rev
-1
]
f
min
Feed per minute
(Linear Feedrate)
[mm.min
-1
]
R
max
max. height of pro le
[mm]
R
a
surface nish
[mm]
f
rev
feed per revolution
[mm.rev
-1
]
r
e
nose radius
[mm]
A
Chip cross section
[mm
2
]
f
rev
Feed per revolution
[mm.rev
-1
]
a
p
Axial depth of cut
[mm]
κ
r
Primary edge setting angle
[°]
h
Chip thickness
[mm]
v
c
Cutting speed
[m.min
-1
]
f
min
Feed per minute
(Linear Feedrate)
[mm.min
-1
]
Q
Material removal rate per minute
[cm
3
.min
-1
]
P
c
Power demand
[kW]
a
p
Depth of cut
[mm]
f
rev
Feed
[mm.rev
-1
]
c
k
c
Constant KTV
Speci c cutting force
[1]
[MPa]
k
κ r
κ
r
angle constant
[1]
η
Ef ciency (usually η = 0,75)
[1]
x
Machined material constant
[1]
turning