Thread cutting insert

Details Thread cutting insert Thread cutting insert

1997-05-06

1998-06-16

Pitts, A. L.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407115, 407117, B23B 2716

Patent

active

057659729

ABSTRACT:
A thread cutting insert comprises a center portion and a plurality of cutting corners project outwardly from the center portion. Each cutting corner comprises a pair of outwardly converging cutting edges which are joined together by a curved tip. Each cutting corner includes a chipbreaking protrusion extending upwardly higher than the upper face of the center portion of the insert. The protrusion includes a front portion facing the tip, and a pair of upwardly converging sides. The front portion and sides are spacially confined to the cutting corner.

REFERENCES:
patent: 4214845 (1980-07-01), Mori
patent: 4575888 (1986-03-01), Muren
patent: 4629371 (1986-12-01), Maeda et al.
patent: 4681487 (1987-07-01), Pettersson
patent: 5044839 (1991-09-01), Takahashi
patent: 5141367 (1992-08-01), Beeghly et al.

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