Cutting tool

Details Cutting tool Cutting tool

2006-03-21

2006-03-21

Fridie, Jr., Willmon (Department: 3722)

Cutters, for shaping

Rotary cutting tool

Face or end mill

C407S056000, C407S058000

Reexamination Certificate

active

07014394

ABSTRACT:
Rotary cutting tools for cutting various types of sheet material are known. However, when cutting non-ferrous materials, damage known as fluttering is caused to both surfaces of the sheet material being cut. The requirement for the cutting of larger and larger sheets of material for safety critical applications such as aircraft wings has made fluttering unacceptable. Furthermore, scrapping sheets of material which exhibit fluttering is extremely expensive. Fluttering occurs as a result of excess pressure being placed on a workpiece edge as it is being cut. A rotary cutting tool (10) for a power tool is disclosed in which the cutting tool comprises body means (12) having a first flute (20, 30), a substantially planar first cutting surface (22, 32) and a first cutting edge (24, 34) formed on said first cutting surface; and wherein said first cutting edge (24, 34) is formed at a first angle to a longitudinal axis of the cutting tool. This cutting tool addresses the problems associated with fluttering.

REFERENCES:
patent: 4963059 (1990-10-01), Hiyama
patent: 5115697 (1992-05-01), Rodriguez et al.
patent: 5913644 (1999-06-01), DeRoche et al.
patent: 6439811 (2002-08-01), Wardell
patent: 2002/0141833 (2002-10-01), MacArthur
patent: 2003/0059263 (2003-03-01), Chen
patent: 1 558 932 (1980-01-01), None
patent: 2 181 076 (1987-04-01), None
patent: WO 94/21412 (1994-09-01), None
patent: WO 95/30506 (1995-11-01), None

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