Cutters – for shaping – With chip breaker – guide or deflector
Patent
1996-06-20
1998-10-27
Bishop, Steven C.
Cutters, for shaping
With chip breaker, guide or deflector
407116, 407113, B23B 2708
Patent
active
058270167
ABSTRACT:
A cutting tool, for milling, comprises a holder and a cutting insert. The cutting insert has a generally octagonal basic shape and has at least two cutting edges created by a transition between an upper face and an edge face of the cutting insert. The upper face constitutes a rake face and the edge face constitutes a clearance face, created at the transition of two adjacent cutting edges. The edge face forms a clearance angle of at least 20 degrees with a plane extending parallel to a center axis of the insert. The edge face is provided with a step which defines a fracture zone. The step forms an angle with a line extending perpendicular to the center axis. Cutting corners of the insert are beveled to form an angle greater than an angle formed by adjacent cutting edges.
REFERENCES:
patent: 4645384 (1987-02-01), Shimomura
patent: 4681488 (1987-07-01), Markusson
patent: 4812087 (1989-03-01), Stashko
patent: 4966500 (1990-10-01), Tsumjimura et al.
patent: 5074720 (1991-12-01), Loqvist et al.
patent: 5145294 (1992-09-01), Flueckiger
patent: 5147158 (1992-09-01), Riviere
patent: 5346336 (1994-09-01), Rescigno
Bishop Steven C.
Seco Tools AB
Williams Mark
LandOfFree
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