End mill having different axial rake angles and different...

Details End mill having different axial rake angles and different... End mill having different axial rake angles and different...

2006-02-14

2006-02-14

Ashley, Boyer D. (Department: 3722)

Cutters, for shaping

Rotary cutting tool

Face or end mill

C407S061000

Reexamination Certificate

active

06997651

ABSTRACT:
An end mill including a cylindrical body having (a) flutes each formed in the cylindrical body and each extending from an axially distal end of the cylindrical body toward an axially proximal end of the cylindrical body, (b) peripheral cutting edges each provided by one of widthwise opposite edges of a corresponding one of the flutes, and (c) end cutting edges each located at the axially distal end of the cylindrical body and contiguous to a corresponding one of the peripheral cutting edges. The end cutting edges include first and second end cutting edges, while the peripheral cutting edges include first and second peripheral cutting edges which are contiguous to the first and second end cutting edges, respectively. A first axial rake angle of the first end cutting edge is smaller than a second axial rake angle of the second end cutting edge, while a first radial rake angle of the first peripheral cutting edge is larger than a second radial rake angle of the second peripheral cutting edge.

REFERENCES:
patent: 2377329 (1945-06-01), Dettmer
patent: 4560308 (1985-12-01), Deller
patent: 5094573 (1992-03-01), Hougen
patent: 5779399 (1998-07-01), Kuberski
patent: 6056485 (2000-05-01), Magill et al.
patent: 6435780 (2002-08-01), Flynn
patent: 2002/0031409 (2002-03-01), Sato et al.
patent: Y2 2557189 (1997-08-01), None

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