Indexable insert drill

Details Indexable insert drill Indexable insert drill

1977-12-27

1980-02-12

Culver, Horace M.

Cutting by use of rotating axially moving tool

Tool or tool with support

408239R, 407113, 407114, B23B 2903, B26D 100, B26D 112, B23B 5100

Patent

active

041881621

ABSTRACT:
An indexable insert drill with a parallelogram shaped insert positioned at a negative axial lead, the insert having a slanted recess which provides an angularly oriented cutting edge extending from a face cutting corner through or slightly under and substantially beyond the drill axis, and a unique notch in the cutting edge providing chip interruption and stabilized lead.

REFERENCES:
patent: 3341919 (1967-09-01), Lovendahl
patent: 3343431 (1967-09-01), Boyer
patent: 3460409 (1969-08-01), Stokey
patent: 3504413 (1970-04-01), Siewert et al.
patent: 3707747 (1973-01-01), Falk
patent: 3791001 (1974-02-01), Bennett
patent: 3815191 (1974-06-01), Holma
patent: 4047826 (1977-09-01), Bennett
patent: 4072438 (1978-02-01), Powers

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