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Engineering Guide CDA3000
A-7
Appendix A Formula bank
DE
EN
1
2
3
4
5
6
7
A
b
Face width
mm
d
Cutter diameter
mm
d
1
Drill diameter
mm
d
2
Predrill diameter
mm
f
Advance per revolution
mm
F
H
Main cutting force
N
F
m
Mean cutting force in milling
N
F
St
Plunger force in pressing
N
K
S
Special cutting force (general)
N/mm²
k
C
Specific cutting force for various
cutting thicknesses
N/mm²
k
C11
Specific cutting force for face
cross-section 1 mm x 1 mm
N/mm²
l
S
Length of cut line
mm
n
B
Drill speed
rpm
n
F
Cutter speed
rpm
Basic equation
Turning
Milling
Shearing and cutting
Drilling
Cutting speed during drilling
Pressing
Table 7.6
Work output for metalworking machinery
Work output for metal-
working machinery
P
s
F
H
v
s
⋅
60000
--------------
=
P
s
F
H
n
P
2
π
r
⋅
⋅ ⋅ ⋅
60000
------------------------------------
=
P
s
z
E
F
m
⋅
60000
---------------
v
s
⋅
z
E
F
m
⋅
60000
---------------
d
π
n
F
⋅ ⋅
1000
--------------------
⋅
=
=
P
s
K
s
l
s
s v
s
⋅ ⋅ ⋅
60000
-----------------------------
=
P
s
z
E
d
1
d
2
–
(
)
s
Z
K
s
⋅
⋅ ⋅
60000
-------------------------------------------------
v
s
⋅
=
v
s
d
1
d
2
+
2
----------------
n
B
π
⋅
1000
-------------
⋅
=
P
P
F
St
v
St
⋅
60000
-----------------
=