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TECHNICAL INFORMATION
COPY MILLING
EFFECTIVE DIAMETER FOR RPM CALCULATION
V c x 1000
n =
D eff x
π
When calculating revolution per minute (n), the effective diameter must be taken into
D eff = D1 + l
account. Refer to the formula below.
D eff =
V c x 1000 Symbol Designation Unit
D eff x D Milling Cutter Diameter mm
D eff Depth of cut (d.o.c.) mm
D1 Cutter flat surface mm
DOC Depth of cut mm
iC Insert Diameter -
Inscribed circle mm
Cutting Speed m/min
Rotation rev/min
Diameter compensation mm
π
D1 + l
Designation Unit V c
D Milling Cutter Diameter mm
D eff Depth of cut (d.o.c.) mm
D1 Cutter flat surface mm
DOC Depth of cut mm
Insert Diameter -
Inscribed circle mm
V c
Cutting Speed
n /2
/2
Rotation
iC
iC
m/min
D1
D1
rev/min
D1
D1 compensation
Diameter
D eff.
n
iC
iC
iC
Symbol
D eff.
Ap
Ap
n =
/2
/2
D eff.
D eff.
mm
D
D
D
D
l
VALUES FOR DOC VALUES*
iC
DOC (Ap)
0.5 1.0 1.5
2.0 2.5 3.0 3.5 4.0
6 3.3 4.5 7 3.6 4.9 5.2 - - - - -
5.7 6.3 - - - 8 3.9 -
5.3 6.2 6.9 - - - 10 -
4.4 6.0 7.1 8.0 8.7 - - -
12 4.8 6.6 7.9 8.9 9.7 10.4 - -
16 5.6 7.7 9.3 10.6 11.6 12.5 13.2 13.9
* For min/max depth of cut, please check the cutting parameter pages for each insert.
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