Electronically-actuated tensioning system for a bandmill

Details Electronically-actuated tensioning system for a bandmill Electronically-actuated tensioning system for a bandmill

B - Operations, Transporting

23

D

B23D 55/10 (2006.01) B23D 55/06 (2006.01) B27B 13/08 (2006.01)

Patent

CA 2243276

The tensioning system is used in a bandmill having a first and a second substantially coplanar wheels that are spaced-apart along a longitudinal axis and around which an endless toothed saw blade is coupled. One of the wheels is selectively movable and tiltable relative to the other by a tensioning system that extends between each end of the shaft supporting the movable wheel and the main frame of the bandmill. The tensioning system comprises a pair of longitudinally-extending hydraulic actuators. A pair of connecting assemblies is provided to operatively connect a respective actuator to an adjacent end of the shaft. A load sensor and a position sensor are connected to each actuator. The sensors send signals to a computer, which constantly checks if the piston assembly of one or both actuators should be moved to maintain the load in the saw blade and the tilt of the first wheel on target values. If a correction is required, the computer sends signals to one or both hydraulic valves that are each controlling a respective actuator.

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