Indexable insert

Cutters – for shaping – Including tool having plural alternatively usable cutting edges – With integral chip breaker – guide or deflector

Patent

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Details

407115, 407116, B23B 2722

Patent

active

059476516

ABSTRACT:
An indexable insert with a chip breaker configured such that chips produced under various cutting conditions from rough cutting to finish cutting can be disposed of in an optimum way. Protrusions are provided in a chip breaker groove to extend from a central land toward the respective corners of the insert. Each protrusion has a breaker wall which is concave and curved such that chips produced always collide against the breaker wall at an angle of 10.degree.-40.degree. so that the chips are curled helically with a helix angle of 10.degree.-40.degree. and broken into small pieces reliably.

REFERENCES:
patent: 4993892 (1991-02-01), Takahashi
patent: 5249894 (1993-10-01), Bernadic et al.
patent: 5584616 (1996-12-01), Katbi et al.
patent: 5743681 (1998-04-01), Wiman et al.

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