Helical mill having multiple flutes with differing rake angles

Details Helical mill having multiple flutes with differing rake angles Helical mill having multiple flutes with differing rake angles

1998-04-20

1999-06-22

Pitts, Andrea L.

Cutters, for shaping

Rotary cutting tool

Including holder having seat for inserted tool

407 54, 407 59, 407 63, B23C 520

Patent

active

059136448

ABSTRACT:
A multiple fluted helical end mill with at least two flutes. Each flute includes a plurality of inserts secured therein. The inserts are all identical. The inserts in different flutes being secured therein at different rake angles. The different rake angles resulting in different effective axial lengths of the inserts. This different effective length of inserts in adjacent flutes results in all effective cutting and it is particularly beneficial where the inserts in a given flute do not have overlapping cutting edges.

REFERENCES:
patent: 4182587 (1980-01-01), Striegl
patent: 4714383 (1987-12-01), Shimomura et al.
patent: 4844666 (1989-07-01), Tsujimura et al.
patent: 5083887 (1992-01-01), Dotany
patent: 5425603 (1995-06-01), Dutschke et al.

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