End-milling cutter with drilling capability

Details End-milling cutter with drilling capability End-milling cutter with drilling capability

1984-04-27

1986-01-14

Vlachos, Leonidas

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

408224, 408713, B23C 520, B23B 5100

Patent

active

045643210

ABSTRACT:
An end milling tool having an elongate body which has two flutes defining two elongate lands extending generally in an axial direction of the body. The two lands have first and second flute surface each facing in a direction of rotation of the end mill. The end mill carries at least two peripheral-cutting inserts for peripheral milling, an inner drilling insert for cutting a radially inward portion of a hole, and an outer drilling inserts for cutting a radially outward portion of the hole, each insert being replaceable and of a generally flat configuration having a back face held in contact with the appropriate surface of the body, and a front face opposite to the back face and including a cutting edge. The peripheral-cutting inserts are disposed in a staggered manner alternately in the first and second flute surfaces, such that the first flute surface carries the peripheral-cutting insert which is nearest to the end face of the body. The inner drilling insert is disposed on the end face of the land having the first flute surface, and the outer drilling insert is disposed in an area of the second flute surface adjacent to the end of the body.

REFERENCES:
patent: 3963365 (1976-06-01), Shallenberger
patent: 4182587 (1980-01-01), Striegl
patent: 4194862 (1980-03-01), Zweekly
patent: 4265574 (1981-05-01), Eckle
patent: 4280774 (1981-07-01), Hayama
patent: 4367991 (1983-01-01), Grafe et al.

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