ISO 9001: 2000 Certified

60˚ Tilt Both Ways

• 3˚ And Straight Column in one machine

• Patent pending Easy Load Guide Blocks

• Optional Power Tilt

WHY BUY A VERTICAL BANDSAW?

Vertical saws provide more consistent cutting (feed) pressures throughout the cut, which leads to longer blade life. With a horizontal bandsaw 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 bandsaws 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 saw - top view.
Material must be moved to match angle of vise.
Material handling area increases dramatically.

Vertical saw - 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 infeed 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 infeed 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.

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