
Selection criteria
5.
224
Ref.1912
DDS
HARDWARE
· 208 ·
In the case of a drill, the bit is mounted on the spindle itself and turns with this
to drill the material. See figure
The power required in this case
Pd
may be calculated with the following
formula:
In the event of governing a gravitational load, the power required depends
very much on the presence on absence of balance weights (crane or
elevator).
See figure
The power required in this case,
P
GL
&
P
GLC
may be calculated as follows:
Governing a frictional load, this is the case of horizontal movements such as
a conveyor belt or a movable table, the required power depends on the
friction coefficient µ
.
See figure
F. H5/5
Drilling. Required power.
M
Drilling load torque in N·cm
n
Spindle turning speed in rpm
D
Hole diameter in mm
f
Feedrate in mm/min
d
Mechanical efficiency (varies from 0.7 to 0.85)
Sd
Cutting efficiency. Cutting volume per kilowatt every minute
(cm³/kW)/min
F. H5/6
Gravitational load. Required power.
V
Linear speed in m / min
Mechanical efficiency
m
L
Table mass in kg
m
C
Counterweight mass in kg
f
D
D
f
P
d
M· 2
·n
60·100·1000·
d
=
·D²·f
4·1000·S
d
·
d
(kW)
=
Drum
Load
Balance
weight
Motor
Speed
Drum
Load
Motor
Speed
P
GL
m
L
·V
6120·
=
(kW)
P
GLC
(m
L
-m
c
)·V
6120·
=
(kW)
Содержание DDS Series
Страница 1: ...DRIVE DDS Hardware manual Ref 1912...
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Страница 179: ...3 Drives Ref 1912 179 DDS HARDWARE...
Страница 180: ...3 Drives Ref 1912 DDS HARDWARE 180...
Страница 200: ...4 AUXILIARY MODULES Auxiliary modules Ref 1912 DDS HARDWARE 200...
Страница 260: ...7 Cables Ref 1912 DDS HARDWARE 260...
Страница 397: ...Sales models 12 Ref 1912 397 DDS HARDWARE 12 9 Order example F H12 21 Order example...
Страница 404: ...13 Compatibility Ref 1912 DDS HARDWARE 404...
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