HYDROK – Safety
2.10.5.3For principle : Fc ≤ Fcmax
The cutting force for turning operations can take on
extremely high values, particularly with short projec-
tion lengths of the workpiece, although fundamentally
processing without slip or levering out of the clamping
set-up would still be possible. Consequently, this cut-
ting force must also be limited in accordance with
chuck size, to avoid chuck damage.
Chuck size
Fcmax / [N]
32
2.700
42
3.600
52
3.600
65
5.000
80
6.000
100
8.000
125
12.000
140
12.500
160
14.000
Table 8: Maximum permissible cutting force
2.10.5.4For principle 4: Fq ≤ Fqmax
For drilling tasks radial to the workpiece axis, due to
the feed force of the tool, transverse forces occurs
that ultimately act on the chuck. This load when
drilling must be viewed as equivalent to the cutting
force when turning, and consequently it must also be
limited. The permissible maximum values are provid-
ed in the table below.
Occurring feed force F
B
when drilling [transverse
force]
[Full-drilling, two-edged tool, machining direction 90°
transverse to the chuck axis]
Fq
=
F
B
=
0,45
∗
D
B
∗
f
n
∗
kc
kc
From table 4
32
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