Indexable cutting bit for turning

Details Indexable cutting bit for turning Indexable cutting bit for turning

2007-02-13

2007-02-13

Carter, Monica (Department: 3722)

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

C407S103000

Reexamination Certificate

active

11136590

ABSTRACT:
An indexible cutting bit includes an upper side of polygonal contour defining at respective corners thereof a secondary cutting edge which extends between first and second main cutting edges. The secondary cutting edge includes, in order of closeness to the first main cutting edge: a convexly curved transition first portion extending from an end of the first main cutting edge, a concavely curved second portion of a second radius, a convexly curved third portion of a third radius, a concavely curved fourth portion of a fourth radius, a convexly curved fifth portion of a fifth radius, a concavely curved sixth portion of a sixth radius, and a convexly curved transition seventh portion extending to the second main cutting edge.

REFERENCES:
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patent: 4936719 (1990-06-01), Peters
patent: 5059069 (1991-10-01), Lagerberg
patent: 5964552 (1999-10-01), Larsen
patent: 6126366 (2000-10-01), Lundblad
patent: 6138540 (2000-10-01), Niemi
patent: 6213691 (2001-04-01), Leeb
patent: 6341923 (2002-01-01), Niemi
patent: 2002/0061235 (2002-05-01), Maier
patent: 2004/0253063 (2004-12-01), Murrell
patent: 2001310204 (2001-11-01), None

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