Cutting insert for drills having chip-embossing formations...

Details Cutting insert for drills having chip-embossing formations... Cutting insert for drills having chip-embossing formations...

2005-08-23

2005-08-23

Fridie, Jr., Willmon (Department: 3722)

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

C407S115000, C407S116000

Reexamination Certificate

active

06932545

ABSTRACT:
A cutting insert, intended for drills, in particular long hole drills, includes a cutting edge from which a concavely curved, chip removing surface extends up to a ridge where the curved surface transforms into a top side of the cutting insert. A number of long narrow chip-embossing formations (e.g., grooves or beads) extend from the chip removing surface to the top side with the purpose of producing, in the underside of the chip, long narrow embossments in the form of either ridges or flutes in order to stiffen the chip and make it more prone to breakage.

REFERENCES:
patent: 5525016 (1996-06-01), Paya et al.
patent: 5630681 (1997-05-01), Paya
patent: 5772365 (1998-06-01), Vogel et al.
patent: 5810518 (1998-09-01), Wimn et al.
patent: 6447218 (2002-09-01), Lagerberg
patent: 6599061 (2003-07-01), Nelson
patent: 0 941 796 (1999-09-01), None
patent: 10-263905 (1998-10-01), None
patent: WO 01/60554 (2001-08-01), None

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