Cutters – for shaping – With chip breaker – guide or deflector – Comprising concave surface in cutting face of tool
Patent
1992-03-06
1993-08-24
Bishop, Steven C.
Cutters, for shaping
With chip breaker, guide or deflector
Comprising concave surface in cutting face of tool
51308, 407119, 501 89, B23B 2716
Patent
active
052383342
ABSTRACT:
The present invention discloses a ceramic cutting tool insert for chip-cutting machining. It comprises a body of generally polygonal or round shape having an upper face, an opposite face and at least one clearance face intersecting upper and lower faces to define cutting edges. The ceramic material is alumina based and comprises at least 10-40 volume % single crystal whiskers and/or platelets of carbides, nitrides and/or borides of Si, Ti, Zr, Hf, Ta and/or Nb or solid solutions thereof. The non-plane chip-forming surfaces of the insert comprise recessions and elevations that are formed in an uniaxial cold pressing operation.
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A. M. Wolf, Metal Cutting, second edition, revised and amplified, Leningrad, Machinostroyenie, Leningrad Division, 1973, pp. 51-52.
Brandt N. Gunnar
Wiman Jorgen V.
Bishop Steven C.
Sandvik A.B.
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