B - Operations – Transporting – 23 – C
Patent
B - Operations, Transporting
23
C
B23C 5/12 (2006.01) B23B 27/06 (2006.01) B23B 27/16 (2006.01)
Patent
CA 2162196
An indexable threading and turning insert with integral pressed-in chip breakers, having a threading insert portion and a turning insert portion. Each of the threading insert portion and the turning insert portion has, respectively, an integral pressed-in chip breaker having ideal chip management characteristics. The indexable threading and turning insert has a substantially diamond shape having a first planar face, an opposite second planar face, and first, second, third and fourth insert faces extending between the first and second planar faces, wherein the threading insert portion is contiguous a first corner formed by intersection of the first and second planar faces and the turning insert portion is contiguous a second corner formed by intersection of the third and fourth insert faces, the second corner being located opposite the first corner. The threading insert portion is characterized by a first cutting edge formed at the intersection of the first insert face and a first land and a second cutting edge formed at the intersection of the second insert face and a second land. Each of the first and second cutting edges is provided with a plurality of noses separated by gullets. First and second integral, pressed-in chip breakers, each in the form of a raised island, the incident face contour thereof corresponding to the nose-and-gullet contour of the respective cutting edge adjacent thereto. Preferably, the incident face contour has scalloped portions adjacent the noses. The turning insert portion is characterized by third and fourth cutting edges located, respectively, at the intersection of a third land with the third and fourth insert faces, and at the intersection of a fourth land with the third and fourth insert faces. Third and fourth integral pressed-in chip breakers, each in the form of a raised island corresponding to the contour of the respective cutting edge adjacent thereto, preferably having a double- stepped, wing backed shape in registry with respect to the second corner.
Bernadic Thomas
Wayne Steven F.
R. William Wray & Associates
Valenite Inc.
LandOfFree
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