MULTIPLE ACTUATING-FORCE SHEARING MACHINE

摘要

A method and an apparatus for operating a hydraulic shearing machine are provided comprising for cutting a shearing-movement of at least one shear blade (17) starting from a starting-position under application of an overall actuating-force and for resetting of the shear blades which were moved for cutting to their starting-position after accomplishment of the shearing-movement a reset-movement under application of an overall reset-force, the shearing-movement and the reset-movement being accomplished by a hydraulic actuating-mechanism comprising hydraulic cylinders (21,22,23,24) and the overall actuating-force and the overall reset-force being applied to the moved shear blades by at least one hydraulic cylinder of the actuating-mechanism. The method proposes that the magnitude of the overall actuating-force is adjustable by switching one or several hydraulic cylinders of the actuating-mechanism in and out of operation-mode.