OPTIMUM Maschinen OPTIturn 3432420, Руководство по эксплуатации

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Rotary chuck - K11-200 ISO 702-2
Version 1.0.5 - 2020-12-09 89 Originalbetriebsanleitung
3442762 │ 3442763 │ 3442764 GB
K11-
200_I
SO
-702
-2_3
4427
62_3
44276
3_43
3276
4_GB
.f
m
The required effective clamping force for machining F
sp
is calculated from the product of the
machining force F
spz
with the safety factor S
z
. This factor takes into account uncertainties in the
calculation of the clamping force.
According to VDI 3106, the following also applies here:
From this we can derive the calculation of the initial clamping force during shutdown:
ATTENTION!
This calculated force must not be larger than the maximum clamping force
∑
S
( 31 KN )
engraved on the chuck.
From the above formula it is evident that the sum of the effective clamping force F
sp
and the
total centrifugal force F
c
is multiplied by the safety factor for the clamping force S
sp
.
According to VDI 3106, the following also applies here:
The total centrifugal force F
c
is dependent both on the sum of the masses of all jaws and on the
center of gravity radius and the RPM.
ATTENTION!
For safety reasons, in accordance with DIN EN 1550, the centrifugal force may be a
maximum of 67% of the initial clamping force.
The formula for the calculation of the total centrifugal force F
c
is:
n is the given speed in r.p.m.. The product
m
B
· r
s
is described as the centrifugal force

torque
M
c
.
In case of chucks with split chuck jaws, i.e. with base jaws and top jaws, for which the base
jaws change their radial position only by the stroke amount, the centrifugal torque of base jaws
M
cGB
and the centrifugal torque of top jaws M
cAB
need to be added:
Base tensioning force
Required minimum tensioning force
Clamping forc
e
C
entri
fu
ga
l forc
e
Speed
Ef
fectiv
e
tensioning for
ce
Workpiece is
released uncontrollably
F
sp
= F
spz
·
S
z
[ N ]
F
sp0
= S
sp
·
(F
sp
± F
c
) [ N ]
- for gripping from the outside in
+ for gripping from the inside out
S
sp
≥ 1.5
F
c
= ∑ (m
b
·
r
s
)
·
π
·
n
30
( )
2
= ∑ M
c
·
π
·
n
30
( )
2
[N]
M
c
= m
B
·
r
s
[ kgm ]
M
c
= M
cGB
+ M
cAB
[ kgm ]