BEHRINGER, suppliers of bandsawing machines, circular cold saws and structural fabricating equipment, introduced the high-performance HBP-610A bandsaw for cutting solid materials up to 24 inches in diameter. The saw frame is a cast iron, dual-column design that uses positive hydraulic downfeed with a heavy-duty gearbox and a high horsepower motor. The solid cast bow frame is designed to eliminate vibration and provide rigid support for blade tensioning. These design details combine for controlled application of downfeed power, resulting in precise, accurate movement of the blade and tight tolerances. Cutting accuracy is enhanced by the horizontal band arrangement and hydraulically tensioned tungsten-carbide guides that provide blade support.
The high torque, frequency-controlled saw drive of the HBP-610A provides cutting speeds from 62 - 426 sq ft/min. The downfeed power and saw blade pressure are monitored by an automatic pressure sensing system. Cutting pressure data is analyzed and the system automatically makes blade pressure adjustments as needed to ensure an optimal balance between feed rate and blade pressure. Operators can maximize material feed rates without concern of overloading the blade. This results in higher output than with saws requiring user-monitored blade pressure. Integrated coolant and hydraulic oil reservoirs minimize downtime on routine maintenance, which also helps to maintain high production rates.
The cutting accuracy and bandsaw longevity are due in particular to the dual-column design. "The dual-column downfeed is superior to swing frame and vertical systems because it ensures uniform downfeed pressure across the blade with no leverage points," said Behringer’s Joe Suydam. "The cutting path is shorter and therefore cutting is faster and more efficient."
Constant chip-load removal
He said that the new saw features constant chip-load removal that support high downfeed rates, create a smoother, more even surface on cut pieces.
The HBP-610A saw has an electronically controlled feed gripper that quickly positions material for cutting, and then floats away from the material. This prevents the gripper from dragging against the material being cut, which could interfere with accurate measuring. The gripper clamping jaws automatically adjust to accommodate material diameter. Because the gripper may be positioned very close to the saw blade, remnant lengths are generally shorter which, over time, results in significant savings on material.
All machine functions are controlled by a PLC with a BT-41 operator terminal for data entry, storage and diagnostic display. An NC preselect provides storage for up to ten programs. Saw frame height adjustment is automatic which saves time by eliminating extra inches of movement each time new material is fed into the saw. The blade moves only the distance actually needed thereby minimizing non-cutting time before high-speed precision cutting resumes.