Cutting insert

Details Cutting insert Cutting insert

1986-06-30

1987-07-21

Jordan, M.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407113, B23B 2716, B23C 520

Patent

active

046814884

ABSTRACT:
The invention relates to an indexable cutting insert having a polygonal basic shape for chip forming machining, preferably for milling. The insert comprises an upper face and a lower face and edge surfaces connecting them. Each corner portion of the insert comprises a plurality of chamfers arranged at the transition between the connected edge surfaces, a first chamfer of which forms a minor cutting edge at the line of intersection with the upper face. At least two further planar, second chamfers are arranged between the first chamfer and the associated edge surface, said second chamfers forming an obtuseinternal angle with each other and forming cutting edges with the upper face and therefore the cut chip avoids compressing and avoids a quick destruction of the corner portions of the insert.

REFERENCES:
patent: 3955259 (1976-05-01), Gustafsson
patent: 4090801 (1978-05-01), Faber
patent: 4616962 (1986-10-01), Ushijima et al.
Article, "Verkstadsteknisk Ordlista Skarande Bearbetning" (Glossary of Workshop Engineering), (Cutting Methods and Tools) SMS Handbook, 508, p. 40.
Article-CIRP, vol. 33/1/1984, "The Exit Failure of Cemented Carbide Face Milling Cutters--Part I--Fundamentals and Phenomenae", pp. 47-51.

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