Cutting insert having cutting edges formed with sloping lateral

Details Cutting insert having cutting edges formed with sloping lateral Cutting insert having cutting edges formed with sloping lateral

1996-03-22

1998-02-17

Howell, Daniel W.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407113, B32C 520

Patent

active

057185409

ABSTRACT:
An exchangeable cutting insert adapted for mounting in a cutter tool body for use, in particular, in combined face and periphery milling operations. The cutting insert is a substantially prismoidal body having a planar base and an upper surface with rake portions merging with side flanks of the insert at least at two cutting edges defining therebetween an insert corner. The insert corner has a bisector plane perpendicular to the base of the insert. Each cutting edge comprises a central portion and first and second lateral portions sloping with respect to the base of the insert, the corner being associated with adjoining first and second lateral portions of the adjacent cutting edges. The central portions of the cutting edges define therebetween a first plane parallel to the base and the adjoining first and second lateral portions have equal lengths and define therebetween a second plane inclined with respect to the base plane and perpendicular to the bisector plane so that the insert corner and the cutting edges have a geometry of a mirror symmetry with respect to the bisector plane. Each cutting edge is capable of operating, when the insert is mounted in the tool, as a peripheral cutting edge having a cutting length deemed by the first lateral portion and the central portion thereof, and as a frontal cutting edge having a cutting length defined by the second lateral portion thereof.

REFERENCES:
patent: 4632607 (1986-12-01), Pantzar
patent: 5056963 (1991-10-01), Kameno et al.
patent: 5199827 (1993-04-01), Pantzar
patent: 5382118 (1995-01-01), Satran et al.
patent: 5388932 (1995-02-01), De Roche et al.
patent: 5454671 (1995-10-01), Qvarth
patent: 5456557 (1995-10-01), Bernadic et al.

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