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THE BEDFRAME
The bedframe is a one-piece, heat-treated alloy-steel casting designed
for maximum rigidity. It is cast in one piece and stress-relieved.
THE CRANKSHAFT
The crankshaft is exceptionally rigid, providing maximum strength
and stiffness. Forged from heat treated steel, it is put through
Ultrasonic and Magnaflux inspections to guarantee freedom from defects.
THE MAIN RAM
The main ram is a long, overarm slide with short guides located
far apart, in front of and behind the crankshaft. This ensures rigid,
precise tool alignment even under off-center loading. And the fact
that the bearing area of the pitman pin extends over the entire
width of the four stations has the same positive effect.
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THE GUIDE WAYS
The guideways on both ram and frame are equipped with bronze and
hardened composite steel liners, respectively. To keep out dirt
and cooling water, the front guides are fully protected by a labyrinth
seal.
THE DIE BLOCK
The die block is made of heat-treated steel and features removable
clamp caps holding the die packs.
A HEAVY PIECE OF ARMOR PLATE
A heavy piece of armor plate reinforces the bedframe surface that
bears the brunt of the forging load applied by the dies. This hardened,
replaceable plate is screwed to the frame behind the die block.
It reduces wear and enhances transmission of the station forging
loads to the bedframe.
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THYRISTOR-CONTROLLED DC MOTOR
The thyristor-controlled DC motor provides infinitely variable speed
control. This lets you match the machine speed to each individual
job. On the AMP 50 the range is from 60 to 100 strokes a minute,
on the AMP 70 from 50 to 80. In practice, though, most parts are
produced at top speed -- especially in view of the forging axiom
"the higher the speed, the better the tool life."
TACHO-GENERATOR
Tacho-generator and thyristor controller keep the set speed constant
regardless of the workload. Switching off the motor breaks the flywheel
electrically, letting you switch over to "setting" after
only a few seconds.
WHILE SETTING UP
While setting up you can run the motor at slow speed --- about 8
rpm on the crankshaft. Either forward or reverse. No auxiliary drive
is needed. A disc brake engages automatically when the machine is
stopped so that the weight of the pitman cannot cause any uncontrolled
machine movement.
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