Ball end mill and throw away insert for such end mill

Details Ball end mill and throw away insert for such end mill Ball end mill and throw away insert for such end mill

1991-06-19

1993-03-02

Bishop, Steven C.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407 54, 407113, B23C 520

Patent

active

051904195

ABSTRACT:
A ball nose end mill comprises a body having a semi-spherical front surface and a plurality of indexable cutting inserts. A central one of the inserts is of generally triangular shape, and the additional inserts are of generally rectangular shape. The central insert has a generally convexly curved top surface, and the cutting edges thereof include main cutting edges which are convexly curved when the central insert is viewed from the side.

REFERENCES:
patent: 4252480 (1981-02-01), Mizuno et al.
patent: 4486127 (1984-12-01), Eckle
patent: 4566827 (1986-01-01), Neumueller
patent: 4618296 (1986-10-01), Allaire et al.
patent: 4699549 (1987-10-01), Shimomura et al.
patent: 4838739 (1989-06-01), Stashko
patent: 4898500 (1990-02-01), Nakamura et al.
patent: 4927303 (1990-05-01), Tsujimura et al.

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