End-mill tool with high and low helical flutes and related metho

Details End-mill tool with high and low helical flutes and related metho End-mill tool with high and low helical flutes and related metho

1997-02-10

1999-12-28

Pitts, Andrea L.

Cutters, for shaping

Rotary cutting tool

Face or end mill

407 56, 407 63, 408230, B23B 5100

Patent

active

060072768

ABSTRACT:
An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the compound cutting surfaces includes a cutting edge having a leading portion formed adjacent one of the primary flutes and a trailing portion formed adjacent one of the secondary flutes.

REFERENCES:
patent: 4182587 (1980-01-01), Striegl
patent: 4475850 (1984-10-01), Penoza et al.
patent: 4480949 (1984-11-01), Van De Bogart
patent: 4497600 (1985-02-01), Kishimoto
patent: 4610581 (1986-09-01), Heinlein
patent: 4721421 (1988-01-01), Klinger
patent: 4963059 (1990-10-01), Hiyama
patent: 5049009 (1991-09-01), Beck et al.
patent: 5193944 (1993-03-01), Nishimura
patent: 5221163 (1993-06-01), Nishimura

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