CNC Double Column Horizontal Band Sawing Machine: The Saw That Holds the Blade Straight Through the Thick Cut

A bandsaw blade wanders. It flexes under the feed pressure and the cut curves. A CNC double column horizontal band sawing machine stops this by supporting the blade between two rigid columns. The saw head rides up and down on the columns, with the blade guides fixed close to the material on both sides. The result is the straight cut through the thick steel, the large billet, and the heavy structural section. For the steel service center, the forge shop, and the heavy fabrication, the double column saw is the one that cuts square.

The Two Columns Hold the Blade

The columns are the frame. They are heavy steel or cast iron, bolted to the base, rising vertically. The saw head moves between them. A single-column saw has the blade guide hanging from one side. Under the load, that side flexes. The blade wanders. A CNC double column horizontal band sawing machine with the two columns supporting the saw head on both sides keeps the blade aligned.

The blade guides sit close to the material, on both sides of the cut. The guides control the blade twist and keep the cutting edge perpendicular to the workpiece. A CNC double column horizontal band sawing machine with the properly placed guides holds the blade straight through the full depth of the cut.

The CNC and the Feed

The CNC controls the cut length, the quantity, and the blade speed. The operator programs the job and the saw executes it. The control monitors the blade load and adjusts the feed rate in real time. A CNC double column horizontal band sawing machine with the adaptive feed control protects the blade and produces the consistent cut.

The multiple vises clamp the material on both sides of the cut. The CNC positions the vises automatically based on the material width in the program. A CNC double column horizontal band sawing machine with the full-stroke hydraulic vises holds the material rigid.

The Blade Tension and the Chip Removal

The blade runs on the two wheels. The hydraulic or the mechanical tensioner maintains the blade tension. Too little tension and the blade wanders. Too much and the blade fatigues and snaps. A CNC double column horizontal band sawing machine with the automatic tension control maintains the set tension through the blade's service life.

The carbide blade guides with the backup rollers support the blade on both sides, as close to the material as the vise positions allow. The powered chip brush or the coolant-fed chip flushing removes the swarf from the blade gullets. A CNC double column horizontal band sawing machine with the effective chip removal runs cooler and cuts faster.

Here is what a CNC double column horizontal band sawing machine has to deliver:

• Two rigid columns with the synchronized ball screw downfeed
• CNC control with the program storage and the adaptive feed
• Automatic vise positioning and the full-stroke hydraulic clamping
• Blade tension control and the carbide guides near the cut
• Chip removal system to keep the blade teeth clear
• Capacity for the material size

The Steel Service Center and the Forge

The steel service center uses the saw to cut the billets and the bar stock to the customer length. The forge shop cuts the slugs from the large-diameter alloy steel bar. The structural fabrication shop cuts the beams, the channels, and the tube bundles.

The Blade That Wanders and the Cut That Curves

The blade wanders because the blade guides were not adjusted for the material width. The properly set guides cut straight. The downfeed ball screws wear unevenly and the saw head tilts. The synchronized drives hold the alignment. The chips pack into the blade gullets and the blade overheats. The chip removal system prevents it.

A CNC double column horizontal band sawing machine is the saw for the thick cut. The columns hold the blade. The CNC controls the feed. Choose a manufacturer that builds the columns rigid and programs the CNC for the production.