 |
 |
|
 |
|
 |
 |
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
|
| |
|
|
 |
 |
|
 |
| |
 |
|
Space
Saving Moveable
Saw Head |
|
| |
|
|
Saw Head Travels
on
Ground Square Ways |
|
| |
|
|
Hydraulically
Lifted Outer
Table with Ball Transfer |
|
| |
|
|
Built
in Positioning Scales on Inner Table |
|
| |
|
|
Hydraulic
Blade Tension |
|
| |
|
|
Built
in Positioning Scales on Inner Table |
|
|
|
 |
|
| |
|
 |
|
Replacement
parts for your Marvel bandsaw machine |
|
| |
|
|
|
|
 |
|
 |
|
 |
|
|
 |
 |
 |
 |
| Why
Buy A Vertical Tilt Frame Band Saw? |
|
| The
obvious reason is to cut angles, but it
goes much further than that. Below
we have listed some of the arguments for
buying a vertical saw rather than a horizontal. |
|
| Vertical
saws provide more consistent cutting (feed)
pressures throughout the cut, which leads
to longer blade life. With a horizontal
band saw one faces the problem of changing
forces of gravity as the saw descends into
the cut. The saw wants to fall faster
the closer to horizontal it gets, causing
variance in feed pressures. All manufacturers
of hinge type horizontal band saws face
this problem. All must deal with this
situation, but not all deal with it in an
effective manner. Vertical saws stand
upright and because of their design do not
encounter the aforementioned problem, resulting
in more consistent feed pressures, longer
blade life due to the constant pressures,
and straighter cuts. |
|
 |
 |
With
horizontal saws the feed
force increases as the frame descends.
|
Vertical
saws produce
consistent feed pressure. |
|
| Manual
measurement of material is easier
on a vertical saw. If
the machine is non-automatic most,
if not all cut off pieces will be
manually measured. It is easier
to manually measure from the blade
on a vertical than a horizontal. On
a vertical saw the stationary vise
jaws will be the rear jaws, which
are close to the blade. When
measuring from the blade on a horizontal,
the blade has to be positioned down
next to the material, requiring additional
time. Also, with the horizontal
cutting, there is always the risk
of running the blade too far down
and into the material, destroying
the teeth. |
|
| Vertical
tilt frame saws make cutting miters
fast and easy while allowing for straight
line feeding of the material. There
are two different configurations of
horizontal angle cutting saws. The
most common is a design where the
vise jaws swivel to cut angles. This
is the least expensive design but
causes the operator to swivel the
material as well. If the piece
you are working with is long, the
support tables also need to be moved. This
requires additional set up time and
floor space. With a vertical
tilt frame, the material is always
in the same line and the saw frame
pivots to accommodate for the angle. |
|
|
Horizontal
bandsaw - top view.
Material must be moved to match
angle of vise. Material handling
area increases dramatically. |
|
Vertical
bandsaw - top view.
Column tilts up to 45º
left and right.
Material always feeds in a straight
line. Material handling area
remains constant. |
|
| |
| The
design of the vertical tilt frame
saw provides for ease of loading material
on the machine's work table. With
a vertical tilt frame machine the
saw frame retracts back behind the
table when not cutting which makes
it easier to load the machine with
either an overhead crane or forklift. On
a horizontal saw the material has
to be placed on a support table and
then run into the machine and under
the blade. There is always the
risk of the saw frame not being high
enough to clear the work piece or
the moveable guide not being open
wide enough. In either case,
the blade or the guide arm could be
damaged. The table being clean
and open on a vertical allows the
material to be dropped into place
without additional material handling
being required. |
| |
| Vertical
saws allow for cutting both directions
from 90º and provide for more
versatility and less material handling. The
nature of the vertical tilt frame
design makes it much easier to cut
trapezoid angles because most tilt
frame verticals tilt both directions. If
one was to cut this same type angle
on a horizontal swivel head saw one
would have to remove the piece from
the machine and turn it around. Depending
on the size of the material being
cut, this could be a material handling
problem, but in any case will take
more time. |
| |
|
Horizontal
saws can cut miters and parallelograms
without additional material handling. |
| |
Vertical
saws can cut miters, parallelograms
and
trapezoids without additional
material handling. |
|
|
| |
| Operation
of the machine is easier with a vertical
saw. Generally the controls are
located directly on the front of the
machine right in line with the blade. With
the controls located in front on the
machine, in line with the blade, the
operator can easily see both sides
of the cut. The in- feed and
discharge sides of the machine are
open and observation of both these
areas from one location is easy. With
a horizontal machine generally only
the discharge or drop off side is
easily visible. If the operator
wants to observe something on the
in-feed side of the machine he would
have to walk around to the back to
make this observation. Also,
most set up functions are controlled
from the operator's control station
on a vertical saw but with a horizontal,
most manufacturers have made the critical
blade speed change function accessible
only from the rear of the machine. If
there are roll tables on the front
of the machine, the operator must
walk around these tables to adjust
blade speeds. This adds to set
up time. On all of the Marvel
saws, blade speed change is done from
the operator's control station. |
| |
| Vertical
tilt frame saws hold the work piece
closer to the cut (blade) reducing
vibration in the cut providing longer
blade life and by holding the material
more secure, one gets straighter cuts. The
other type of horizontal angle cutting
saw is one where the vise jaws are
stationary and the saw frame swivels. This
makes for inline feeding of the material,
but now as the saw frame swivels (A)
the blade moves out and away from
the blade. This can result in
unsupported material (B) causing vibration
in the cut and the greater the angle,
the further away the blade is. As
the saw frame swivels out to the angle
needed as mentioned it moves away
from the vise jaws. This then
increases the minimum cut off length. |
| |
 |
 |
Swivel
frame horizontal saw - top view.
The blade moves away from the
vise as the frame is swiveled
(A), increasing the length of
unsupported material and the
remnant length (B).
|
Vertical
saw - front view.
As the column is tilted (A)
the blade remains in the same
relationship to the vise jaws. The
remnant length remains minimal
(B). |
|
| |
| T-Slots
in the worktable makes for easy fixturing. On
the Marvel vertical tilt frame saws
T-Slots allow for locating work holding
devices of various styles to secure
materials which are not easily held
or are too large to fit in the vise
jaws. There are no provisions
like this on horizontal saws. |
|
|
|
|
|
|
|
