Radius end mill having radius edge enhanced in resistance to...

Details Radius end mill having radius edge enhanced in resistance to... Radius end mill having radius edge enhanced in resistance to...

2005-01-25

2005-01-25

Fridie, Jr., Willmon (Department: 3722)

Cutters, for shaping

Rotary cutting tool

Face or end mill

C407S054000, C407S034000, C407S063000

Reexamination Certificate

active

06846135

ABSTRACT:
In a radius end mill having a bottom edge formed on the end face thereof, a radius edge designed in a substantially quarter arc shape and formed at a corner portion thereof, and an outer peripheral edge formed spirally on the side surface thereof, the bottom edge and the radius edge being continuously connected to each other at a connecting point A while the radius edge is continuously connected to each other at a connecting point B, when a view taken along a plane that passes through the connecting points A and B and crosses a rake face of the radius edge is represented by an R cross-sectional view, the rake face of the radius edge is designed to have a convex curved line extending from the connecting point A to the connecting point B in the R cross-sectional view.

REFERENCES:
patent: 4712948 (1987-12-01), Kidani
patent: 5685671 (1997-11-01), Packer et al.
patent: 5725333 (1998-03-01), Abe et al.
patent: 6152657 (2000-11-01), Packer et al.
patent: 6439811 (2002-08-01), Wardell
patent: 07-246508 (1995-09-01), None
patent: 11-216609 (1999-08-01), None
patent: 2000-052127 (2000-02-01), None
patent: 2002-292514 (2002-10-01), None

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