HYDROK – Safety
2.10 Implementation limits
Clamping head chucks are designed and developed
for location of workpieces for machining of rotational-
ly-symmetric workpieces. Other fields of application
require an explicit approval by the manufacturer.
The chucks are also subject to limits in the area of
machining of workpieces.
Specifically, prior to using the chucks, four limits that
are independent of each other must be checked.
2.10.1 Nomenclature
Short description
Unit
Explanation
a
p
mm
Depth of cut, turning operation
c
-
Contact factor
D
B
mm
Drill bit diameter
d
sp
mm
Clamping diameter
d
z
mm
Machining ø turning operation
f
mm
Feed / turn turning operation
Feed / cutting edge drilling operation
F
B
N
Feed force, drilling operation
F
c
N
Cutting force, turning operation
F
c
max
N
Max. cutting force, turning operation
F
fz
N
Clamping force contingency for rotation compensation
F
G
N
Weight force, workpiece
f
n
mm
Feed / turn drilling operation
F
q
N
Transverse force
F
q
max
N
Max. permissible transverse force
F
rad
N
Radial clamping force
F
raderf
N
Required radial clamping force
F
sk
N
Clamping force for preventing the workpiece from levering out
F
sz
N
Clamping force for location of the machining forces and
machining moments when turning or drilling in the direction of
the chuck axis
Ft
kN
Tailstock force
Ft max.
kN
Max. tailstock force
kc
N/mm²
Specific cutting force
L
a
mm
Unclamping length
L
g
mm
Distance, center of gravity - workpiece - clamping position
Order h49 7144.907-333
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