Patent ID: 6520060
Filing Date: 2003-02-18
Classification: B21F,B23D,Y10T

Abstract:
A cut-off mechanism for severing elongate stock, comprising:a first jaw having a first surface extending between a sharpened leading first cutting edge and a trailing edge, said first jaw defining first and second ends and an intermediate section therebetween; a rotationally fixed second jaw having a second surface extending between a sharpened leading second cutting edge and a trailing edge; a connector assembly pivotally interconnecting said first and second jaws in a side-by-side relationship at a location spaced apart from said first and second cutting edges, and positioning said leading cutting edges to shear cut elongate stock positioned therebetween, wherein said first jaw rotates with respect to said second jaw about said connector assembly, and said connector assembly includes a guide block and a U-shaped block translationally received therein, with a pin extending laterally through said U-shaped block and pivotally connecting said first jaw thereto, such that said first jaw is translationally guided within said guide block by said U-shaped block; a hydraulic cylinder operably connected with at least one of said first and second jaws and mutually rotating the same, said hydraulic cylinder connected to said first jaw adjacent said second end and rotating said first jaw about said intermediate section; said sharpened leading first cutting edge having a hook-shaped side elevational configuration extending arcuately between an outer tip portion thereof and an inner base portion thereof, said hook-shaped leading first cutting edge disposed adjacent said first end whereby when said first and second jaws are pivotally converged by said powered actuator, elongate stock positioned between said first and second cutting edges adjacent the outer tip portion of said first cutting edge is incrementally shear cut through its entire thickness to cleanly sever the same to length with minimal jolt.