Cutters – for shaping – Including tool having plural alternatively usable cutting edges – With integral chip breaker – guide or deflector
Patent
1998-02-05
1999-09-07
Pitts, Andrea L.
Cutters, for shaping
Including tool having plural alternatively usable cutting edges
With integral chip breaker, guide or deflector
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.
Ikegaya Akihiko
Kimura Norihide
Kitagawa Nobuyuki
Murakami Daisuke
Murakami Reizo
Pitts Andrea L.
Sumitomo Electric Industries Ltd.
Tsai Henry W. H.
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