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1.8.2
Gearboxes
Application
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The following advantages are obtained by locating the gearbox outside the
spindle box:
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Characteristics
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Note
1PH7 and 1PH4 motors are only designed for stressing levels in accordance
with the specifications (refer to the cantilever force diagram and maximum tor-
que in the Planning Guide).
When using force/torque increasing elements, e.g. a gearbox, the increased
mechanical stressing (e.g. as a result of belt pre–tension forces), must be
handled by the appropriate reinforcing element. The system designer must take
this into account. For a gearbox, this means, that e.g. increased belt pre–ten-
sioning forces must be handled by the gearbox, and must be transferred to the
machine.
For drive units, which, e.g. are mounted to the gearbox flange or gearbox hou-
sing, motors with type of construction IM B35 must be supported on the non–
drive end to prevent any stressing.
Siemens AG 2000 All rights reserved
SIMODRIVE Planning Guide Motors (PJM) – 11.00 Edition
If the drive torque at low speeds is not adequate.
If the constant power range is not adequate to be able to utilize the cutting
power over the complete speed range.
Gearbox oscillations and vibrations are not transferred to the machine.
Separate lubricating systems for the main spindle (grease) and the chan-
geover gearbox (oil).
No noise and no temperature changes due to gearbox pinions in the spindle
box.
The drive power can be transferred, instead of via belts, also via a pinion (on
request) or coaxially via an equalization coupling from the gearbox out drive.
Planetary gearbox design
Gearbox efficiency: greater than 95 %
Gearboxes are available for motors, shaft heights 100 to 225
Changeover gearboxes are available for drive outputs of up to 100 kW
Type of construction: IM B35 (IM V15) and IM B5 (IM V1) of the motors can
be accommodated
6SN1197–0AA20
1PH7 AC Main Spindle Motors
1.8 Options
1PH7/1-23
1PH7
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