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High torque, power direct drives
for forging hammers
Large direct drives simplfy radically the most demanding applications.
Forging hammers use a massive flywheel to turn a leadscrew which
drops the hammer on a forging die. Phase Motion Control developed
a segmented, 1 mW peak, 20,000 Nm, 500 rpm motor which spins
directly the flywheel (on which the permanent magnets are applied)
doing away with the traditional belt + friction drive transmission,
and turning forging from an inaccuracte, violent applicaton
into aa fast cycle, reproducible and controllable process capable
of narrow tolerances. In this application, the Phase Motion
Control approach of cooperation with the application team was
essential in the design of a unit with an unusually large air
gap (3.5 mm) capable of withstanding the extreme shocks typical
of this process.
It is expected that all electric, direct drive forging hammers
will gradually replace the conventional units. |
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