Central
Control Desk |
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The central
control desk stands alongside the machine's tool area. Neatly and
logically arranged signal lamps tell the operators how the installation
is working.
They can observe
the forging stations in the tool area through a shatterproof, transparent
guard. A mirror can be attached on the other side of the machine
to let them see what's going on at the feed rolls.
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Operator
Errors -- Virtually Impossible |
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Operator errors
are virtually impossible. All important controls are interlocked
electrically. If the operator tries to switch on the machine without
first pre-lubricating it, for example, there will be no response.
And a signal
lamp indicates what is wrong. Or if the cut-off length is altered
during operation, the readjustment will be automatically suspended
when a bar hits the bar stop.
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Position
Indicator |
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A big help in
setting up is the position indicator, which shows the position of
the various mechanisms in relation to the timing diagram. It permits
the operator to position the slide in just a few seconds for setting
the ejectors, or for adjusting the transfer grippers.
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Protection |
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All main actuating
elements -- shearing slide, transfer, die ejectors, punch ejectors
-- are protected by stretch bolts or overload couplings and limit
switches. When an overload occurs, the mechanic power train is interrupted
and the machine is shut down electropneumatically at the same time.
Motor, compressed air system, electrical, cooling system, lube pumps
and circuits: all are permanently monitored. And the operators are
protected against accident by electrical interlocks -- like the
one that prevents inadvertent starting of the machine if anyone
is working in the tool area.
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Punch
Flicker -- Safety |
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The punch flicker
for example, prevents double loading as a result of punch "stickers."
It checks the punches after each stroke and stops the machine if
a forging is hung up on one of the punch tools. A safety stop will
bring the machine to a dead halt before the punches hit the forgings
again on the next stroke.
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THE
PUNCH FLICKER SWINGS IN FRONT OF THE PUNCH EVERY STROKE TO CHECK
WHETHER A FORGING IS STUCK TO IT.
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Split-second
Safety |
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Production stoppages
mean lost time and lost peace of mind, and they cost a lot of hard
cash, too. This is why we've equipped Hotmatics with a system of
split-second safety devices that protect the machine and tooling
in the event of a malfunction.
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Transfer
Grippers -- Safety |
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Each gripper
arm is protected individually. If anything slightly out of the ordinary
occurs in the tool area, one of these devices will trip and shut
down the machine.
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Multiple-disc
Brake |
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A big multiple-disc
brake combined with a carefully designed pneumatic system provide
the smallest possible braking angle, stopping the machine before
the tools can jam.
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