Indexable insert with corners with different radii

Details Indexable insert with corners with different radii Indexable insert with corners with different radii

2007-12-18

2007-12-18

Fridie, Jr., Willmon (Department: 3722)

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

C407S115000

Reexamination Certificate

active

11162628

ABSTRACT:
The present invention relates to an indexable cutting insert for an end mill for machining of contours in a workpiece and to a milling tool. The cutting insert is asymmetrical in respect of a line through a hole in the cutting insert. The cutting insert comprises two cutting edge portions. Each cutting edge portion comprises a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a rake face. The curved cutting edges have different lengths. The cutting insert has a bottom side and a first and a second opposite corner. The second corner is defined in plane view by a radius that is greater than, preferably at least twice as great as a radius of the first corner.

REFERENCES:
patent: 5017055 (1991-05-01), Tsujimura et al.
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patent: 5951213 (1999-09-01), Fauser et al.
patent: 6193446 (2001-02-01), Astrom et al.
patent: 6257807 (2001-07-01), Heinloth
patent: 6379087 (2002-04-01), Alexander, IV
patent: 7040844 (2006-05-01), Daiguji
patent: 2002/0037199 (2002-03-01), Satran et al.
patent: 6179110 (1994-06-01), None
International Search Report for corresponding PCT/SE2004/000382.

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