Behringer has introduced the new HBM800ALU high performance bandsaw for high speed cutting of aluminum and other non-ferrous materials. The HBM800ALU saw is fully automatic and features complete cutting capability utilizing either bi-metal or carbide-tipped saw blades. After loading stock, the machine continually manages all aspects of the process and provides real time cutting data which is displayed at the operator terminal.
Richard Klipp, Behringer president, said, "To my knowledge, the new HBM800ALU bandsaw cuts aluminum faster than any other bandsawing machine. And if you compare the overall costs to other types of saws -- particularly to circular saws -- then you immediately see the cost-effectiveness." Klipp said the new HBM800ALU saw uses a 30 hp motor whereas most circular saws with the same cutting range capability require a more expensive 100-150 hp motor. "Blade cost," continued Klipp, "is also an area where customers can save. The 1.25-inch HBM800ALU blade is comparatively inexpensive to a circular saw blade, especially when cutting larger materials."
The new saw offers numerous features for efficiency and cost-effectiveness, and readily handles material sizes of up to 31.4" diameter round and 31.4" x 31.4" square. Like its predecessor, the HBM540A bandsaw, the new HBM800ALU features high drive output levels and fast cutting speed capability to meet the unique performance, precision and cut quality standards associated with aluminum cutting.
The machine's electronic control system contains a number of programmable functions engineered for efficiency in aluminum cutting. As an example, the saw blade speed and feed rates are ramped up after initial penetration and ramped down as the blade exits the material. This prevents damage to the blade by assuring that the entry and exit of the aluminum is controlled and accurate.
The cast iron construction of the saw frame reduces vibrations and enhances torsion resistance during cutting. This provides higher band tensioning and precision movement, delivering flat cuts and tight tolerances. The HBM800ALU saw blade downfeed is driven by a precision ball-screw. Precise control of the saw blade to the material allows very high donwfeed rates to be achieved and at the same time maximizes saw blade life. The servo drives also enable rapid positioning of the axis, reducing non-cutting cycle times.
Blade downfeed power and blade pressure are continually monitored and the servo-controlled cutting pressure sensing system, which balances power and pressure, analyzes this data and makes precise adjustments. This assures that the material feed rate is always maximized without overloading the blade and results in sustained high output and the longest possible blade life.
Improved material usage and efficiency is realized with the HBM800ALU saw in part because of the narrow kerf (0.042"). Circular saws capable of fast cutting of large aluminum stock can leave a kerf up to four times as wide which, over a short period of time, adds up to significant material waste for aluminum producers, distributors and manufacturers. The HBM800ALU's narrow kerf minimizes lost material and thereby helps assure a higher quantity of finished pieces per unit of stock.
Driven by a frequency-controlled servo drive, the HBM800ALU feed gripper is mounted on linear guides to provide smooth transport of aluminum stock and further contributes to the fast cycle times. The machine also readily handles uneven stock, bundled material or heavy forgings. The gripper clamping jaws automatically adjust to accommodate material width. Because the gripper may be positioned very close to the saw blade, remnant lengths are generally shorter by as much as 50 percent when compared to other automated sawing centers. Over time this also translates into significant savings on material.
Specially designed, low friction blade rollers guide the high-speed saw blade while two self-adjusting brushes continually clean the blade. Chips are guided through the large funnel shaped saw base and fall into a large capacity conveyor system for removal. The machine features large hinged doors which provide complete access for cleaning and maintenance work such as changing the saw blade. Blade changing is facilitated with a hydraulic blade tensioning system.
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