Band-sawing machine

Details Band-sawing machine Band-sawing machine

1988-10-17

1990-04-03

Watts, Douglas D.

Cutting

With means to monitor and control operation

83800, B23D 5300

Patent

active

049130145

ABSTRACT:
A band-sawing machine is provided opposite to the intended workpiece location with a movable work unit comprising the saw-band and its drive mechanism. The rate of travel of said movable work unit is reduced by a hydraulic circuit provided with a device for regulating the rate of flow. In addition, the hydraulic circuit includes a valve which is capable of limiting or even of interrupting the flow of fluid. The operation of the valve is controlled by a means responsive to an increase in the resistance set up in opposition to the driving tension of the saw-band. The arrangement is such that an increase in said resistance produces a limitation of the flow rate within the hydraulic braking circuit and consequently a reduction in the rate of travel of the movable work unit.

REFERENCES:
patent: 2958347 (1960-11-01), Blum et al.
patent: 4170915 (1979-10-01), Sato
patent: 4357848 (1982-11-01), Sakurai et al.
patent: 4358974 (1982-11-01), Sakurai
patent: 4620465 (1986-11-01), Taguchi

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