PRISM
P115
Computer Control
The PRISM® computer manufactured by GMS automates
the operation of the Prism and provides the ability to store cutting
sequences and have the backgauge automatically position itself for
each cut.
The hardware and software for the computer control were developed
by GMS using the latest in microcomputer technology. All circuitry
is manufactured to meet or exceed the highest microchip standards
(military specification standards). All electrical components undergo
vigorous function tests as well as a computer controlled endurance
test of the complete module.
Measurement can be entered into the computer, via a numeric keyboard,
allowing for quick setup without moving the backgauge. All backgauge
moments and limits are automatically set and controlled by the computer.
Stored program measurements can be changed easily and quickly and
measurements can be added or deleted as necessary.
The PRISM® offers the ability to record while cutting, thereby
allowing the program to be automatically recorded while cutting the
first lift.
The PRISM® can store up to 2000 program steps. The use of a non-volatile
memory storage system assures no loss of data in the event of a power
loss.
Measurement Display
Large easy to read digital display of exact backgauge position and
the next cut position that is stored in the computer's memory. Measurement
can be displayed in the metric or inch system. Displayed to 1/1000"
in the inch system.
Measuring System
PRISM®'s industry standard direct rotary measuring systems uses
a rotary encoder/pulse generator connected to the lead screw. Backgauge
movements are transferred to the computer control electronically.
The system automatically compensates for wear on the lead screw,
spindle condition or by changes in the backgauge drive mechanism.
Therefore, the highest possible precision is maintained for many years.
Cutting Line Indicator
Optical (light line) and mechanical (clamp edge) cut line indicators
are provided as standard equipment. They provide a visual reference
of the cutting edge of the knife and allow the setup of a cutting
program according to the printed image or cut lines. They also provide
a visual safety to prevent cutting in an image area.
Chrome Main and Side Tables
The PRISM® is standard equipped with a chrome surface on the
main table and also on the standard side tables. The high quality
flash chrome surface provides a very stable surface and eliminates
the maintenance necessary for steel surface tables
Air Table
The PRISM® is equipped with an air table with built in blower.
The air table provides a cushion of air that floats the lift so even
the heaviest material can be moved, turned or aligned easily. The
computer controls the air on the cutting table. The air turns on automatically
when the backgauge moves in reverse and turns off when the backgauge
moves forward. The air table can also be turned on or off manually.
One Hand Control
The backgauge can be positioned manually with advance/reverse-fast/slow
keys for fast and precise setting of the backgauge position according
to a printed image. With one hand control, the operator can hold the
lift with the other, always keeping it in contact with the backgauge.
Backgauge
The PRISM® has a very rigid and stable backgauge because it is
guided on all four sides of the large table gib. Due to the design,
the backgauge is carried (does not ride) over the cutting table guaranteeing
long lasting precise operation.
Backgauge Drive
The backgauge drive on the Prism cutter is equipped with a patented
DC drive system.
Slot Closing Device
The PRISM® is equipped with a slot closing device that covers
the slot on the cutting bed and prevents the bottom sheets in a lift
from being damaged or folded over by the slot. This device not only
prevents damage to materials but also damage to equipment in further
processing such as a blanket on a printing press if a folded sheet
is run through undetected.
Hydraulic Clamp Pressure Adjustment
The infinitely variable hydraulic clamp pressure is easy to adjust.
It offers a wide range of pressure with a low minimum pressure. A
false clamp plate to protect difficult materials during cutting is
provided as standard equipment and is easily fitted from the front
of the machine.
Smooth Swing Cut
PRISM® has a smooth left to right cutting action so material
is not forced against the side guide. The result is a smoother cut
and prolonged knife life.
Knife Drive
The PRISM® uses a worm gear to drive the knife. The worm gear
is the strongest of all common gear drives because more teeth are
in mesh at the same time. The worm gear drive runs in an oil bath
and requires no service other than oil changes.
PRISM® uses a hydraulic clutch to transmit the dynamic energy
from the flywheels to the knife drive. This clutch system is designed
for minimum wear, resulting in less maintenance for the Prism cutter.
Knives
PRISM® knives are extra thick and have a higher grinding reserve
for extended life and reduced knife costs. Prism's knife lift provides
a simple and safe means of changing knives. The knife does not have
to be manually lifted out of the machine.
High Speed Steel Knives
Provided as standard equipment are high-speed steel knives. High-speed
steel knives are manufactured using tool steel, which is a higher
quality of steel. The result is a knife with better accuracy and toughness.
A high-speed steel knife is a stronger, more durable knife that has
the unique ability to resist abrasion, stress, shock and impact.
High-speed steel knives will last up to three times longer between
grinding than standard steel knives. This results in a reduction of
downtime for knife changes with an increase in machine utilization.
They will also reduce annual grinding costs with an increase in knife
life.
Safety Features
Two-hand start and hold cut cycle circuitry with anti tie down and
non-repeat devices to ensure safe operation.
Mechanical safety bolt. An additional safety device that automatically
locks the knife carrier in the upper position. It has an electronic
and mechanical self-check system.
Electric eye light barrier with self-check circuitry. The cold burning
infrared light source is long lasting and is not affected by ambient
light.
Mechanical and electronic overload protection that is reliable at
any knife position prevents damage to the knife drive. The shear bolts
are conveniently located for easy accessibility and quick replacement.
Safety clamp pressure when actuating clamp by the foot pedal regardless
of pre-set clamp pressure.
Electronic self-check system. Machine functions are continuously
monitored.
