Drill with disposable inserts

Details Drill with disposable inserts Drill with disposable inserts

1982-09-27

1988-10-11

Silverberg, Fred

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

B26D 100

Patent

active

047767324

ABSTRACT:
An indexable disposable insert having six contiguous edge faces having alternate acute and obtuse angled corners, cutting edges being formed at the junction of at least one of the hexagonal side faces and each of the six contiguous edge faces, the hexagonal side face forming the cutting edge having a chip breaker extending around the face, the chip breaker extending inwardly from each of the cutting edges, and being tapered in plan configuration behind each alternate cutting edge.

REFERENCES:
patent: 3399442 (1968-09-01), Jones et al.
patent: 3973308 (1976-08-01), Lundgren
patent: 4056871 (1977-11-01), Bator
patent: 4059363 (1977-11-01), Romagnolo
patent: 4087192 (1978-05-01), Hertel
patent: 4116576 (1978-09-01), Gawryk, Sr.

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