Cutting insert

Details Cutting insert Cutting insert

2006-02-13

2008-10-21

Ashley, Boyer D. (Department: 3724)

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

C407S114000, C407S115000, C407S116000

Reexamination Certificate

active

07438508

ABSTRACT:
A metal cutting insert that is primarily intended for turning operations includes an upper surface, a lower surface substantially parallel with said upper surface, and at least three side surfaces extending between said upper and lower surfaces. A transition between two adjacent side surfaces forms a rounded nose radius surface at a cutting insert corner. The cutting insert includes a peripheral land bridging the upper and side surfaces at least at the corner portion at a chamfer angle. An intersection of the land and the nose radius surface forms a nose cutting edge. The nose cutting edge is defined by at least one radius. The cuffing corner includes at least one curved wiper edge. The chamfer angle in a cross-section at the nose cutting edge is larger than the chamfer angle in a cross-section a distance away from the nose cutting edge.

REFERENCES:
patent: 5032049 (1991-07-01), Hessman et al.
patent: 5222843 (1993-06-01), Katbi et al.
patent: 5634745 (1997-06-01), Wiman et al.
patent: 5904450 (1999-05-01), Satran et al.
patent: 6146063 (2000-11-01), Ramold et al.
patent: 6623217 (2003-09-01), Brockett et al.
patent: 2004/0146365 (2004-07-01), Usui et al.

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