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Unlike some of the double column
machine on the market today, the HE&M Saw WF130 is a true double
column designed machine. It travels vertically on two linear ways on
two columns creating a more rigid machine. The WF130-style saw also
has a canted blade, which allows the blade to enter and exit the
material at an angle. Since the blade is not cutting the entire mass
of the bundle at one time, the cut will be faster and more accurate.
We have seen cutting performance increases of 30% to 50% over the
pivot-style and non-canted double column machines, depending on the
material and bundle size. These percentages also hold true for blade
life since the cant of the head creates a more uniform cross sectional
area of the material being cut.
The optional Vibration Dampening System allows the band
saw blade to adjust when needed while cutting bundles of material. If
a part shifts during the cut than the blade is allowed to retract into
the guide arm and is then pushed back into the material similar to the
action in the spring on a car. This is important since the tooth is
the weakest link between the blade and the saw. By having a system
that allows the blade to move when the material shifts, the likelihood
of losing a tooth in the cut is greatly reduced.
The Cut Watcher System is standard on this saw and
monitors the blade for straight cuts while the cutting process is
on-going. It detects any rotational movement at the moment it occurs.
When rotation occurs on the blade, material can be cut concave,
convex, or out of square from top to bottom. The Cut Watcher System
continually monitors the blade which is especially important if the
machine is being run unattended and the operator is not watching the
cut quality. Once the blade deviates more than a pre-determined level,
controlled by the sensitivity of the monitor, the saw will
automatically shut itself off. This type of system will help to cut a
bundle of parts that are accurate, and not out of square. It also
detects when it is time to change the blade because when the blade is
dull it will no longer produce a straight and flat cut. It also
assists the operator if there is too much head pressure put on the
saw. The Cut Watcher lights will light up, letting the operator know
that the blade is starting to cut out of square. The operator could
then reduce the cutting pressure to help bring it back in. This
feature works extremely well and there are hundreds of HE&M Saws out
in the field with this feature.
The Top Clamp System is optional and uses a system to
pull the clamp down by having cylinders or ball screws on both sides
of the clamp to provide the maximum amount of force to keep the bundle
from slipping during indexing and reducing any type of vibration
during the cut. Some of our competitors only use cylinders on one side
and cantilever the arm out on the other. The problem with this type
system is that it does not create uniform clamping pressure and clamps
tighter next to the cylinder and with much less pressure the further
away from the clamp you go. This would allow the bundle to move during
indexing and doesn’t hold nearly tight enough during bundle cutting.
Also optional are the Shadow Light System and the Laser
Light System. The Shadow Light System creates a cut line right below
the blade, visible on the material making it easy to line up the
material for the cut. The Laser Light System performs a similar task
but with the added ability to adjust where the light shows on the
material.
The standard feed index system on the WF130 is a 0 –
72” stroke bar feed and utilizes HE&M Saw’s new “Smart Feed System”.
Material is not perfectly straight. To correct this condition, the new
“Smart Feed System” will compensate for the shift that occurs in the
material during clamping and indexing. The Smart Feed System can
correct an error that was caused by clamping and will compensate for
any inaccuracies in the feed position. The bar feed will do full
indexes transmitting it’s actual position to the computer up to the
final index where the computer will calculate the necessary distance
to move to achieve the programmed length. This does away with any
tolerance build-up.
The vises on the saw and bar feed are bi-directional.
This means that both vises open up creating a larger pass through
allowing larger bundles to move through the saw. If you didn’t have
bi-directional vises, the bands on the bundles would tend to hang up
on the vises. This could create large inaccuracies while feeding the
material.
The Computer Controlled Feed System is also standard on
the WF130. With this automated system, all the operator has to do is
enter the part length and quantity required. It can be programmed to
handle jobs of varying length and quantity in succession.
The WF130 is equipped with many technological advances
to make it a rugged and accurate band saw.
WF130ADC
WF130MDC
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