Cutting insert

Details Cutting insert Cutting insert

1998-03-10

1999-11-02

Howell, Daniel W.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407113, 407115, B23B 2704

Patent

active

059758120

ABSTRACT:
A cutting insert (1) has an insert body (2) with an upper central clamping surface (3) and a lower clamping surface (4) through which passes an axis of symmetry (A) about which the cutting insert is indexable. The insert body (2) has a pair of opposite and identical cutting end portions (8A,8B) disposed laterally with respect to the upper clamping surface. The cutting end portions (8A,8B) each have a rake surface (9A,9B), a front cutting edge (11A,11B) and side cutting edges (15A,16A,15B,16B). Planes (20A,20B) passing through the midpoints (21A,21B) of the front cutting edges (11A,11B) and being normal thereto are inclined in opposite senses with respect to the axis of symmetry (A) in an end view of the cutting insert. A front cutting edge (11A) has at least two component cutting edges (22A,23A,25A), each pair of adjacent component cutting edges (22A,23A;23A,25A) overlapping via a common bridging section (26A,27A) thereby providing chip splitting means, each component cutting edge (22A,23A,25A) being associated with localized chip control means (27A,29A,30A) including chip breaking means.

REFERENCES:
patent: 2176265 (1939-10-01), Luers
patent: 2688791 (1954-09-01), Luers et al.
patent: 2891300 (1959-06-01), Shephard
patent: 3821837 (1974-07-01), Faber
patent: 5007775 (1991-04-01), Pantzar
patent: 5156502 (1992-10-01), Satran
patent: 5232319 (1993-08-01), Satran et al.
patent: 5372463 (1994-12-01), Takahashi et al.
patent: 5388932 (1995-02-01), DeRoche et al.
patent: 5810519 (1998-09-01), Vogel et al.

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