Drill with single cutter

Details Drill with single cutter Drill with single cutter

1981-01-21

1983-11-01

Vlachos, Leonidas

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

408228, 408229, 408233, 408713, 407 42, B23B 2716

Patent

active

044127634

ABSTRACT:
To form holes of small diameter, a drill includes a single cutting insert having an active edge portion with two oppositely facing cutting edges. When the drill is rotated, one cutting edge of the insert cuts the center portion of the hole while the oppositely facing cutting edge cuts the peripheral portion of the hole.

REFERENCES:
patent: 864756 (1907-08-01), Phillips
patent: 3514828 (1970-06-01), Wale
patent: 3630204 (1971-12-01), Fishbein
patent: 3863316 (1975-02-01), Yeo
patent: 3963365 (1976-06-01), Shallenberger, Jr.
patent: 3963366 (1976-06-01), Eckle et al.
patent: 4034452 (1977-07-01), Edming
patent: 4176990 (1979-12-01), Gover, Sr.
patent: 4230429 (1980-10-01), Eckle

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