Cutting insert and cutting tool therefor

Details Cutting insert and cutting tool therefor Cutting insert and cutting tool therefor

B - Operations, Transporting

23

B

B23B 27/16 (2006.01) B23C 5/20 (2006.01)

Patent

CA 2706734

A cutting tool has at least one cutting insert seated therein. The cutting insert has a longitudinal axis, an upper surface, a lower surface and a peripheral surface that extends between the upper surface and the lower surface. At least a portion of an intersection between the upper surface and the peripheral surface constitutes a cutting edge. The lower surface has at least one set of base abutment surfaces, each set including at a least one major base abutment surface and at least one minor base abutment surface. The major and minor base abutment surfaces of the first set lie on a first base abut- ment plane while the major and minor base abutment surfaces of the second set lie on a second base abutment plane. The first and second base abutment planes forming a first non-zero angle therebetween.

La présente invention concerne un outil de coupe dans lequel est disposée une plaquette de coupe. Cette plaquette de coupe comporte un axe longitudinal, une surface supérieure, une surface inférieure, et une surface périphérique qui s'étend entre la surface supérieure et la surface inférieure. Une partie au moins d'une intersection entre la surface supérieure et la surface périphérique constitue une arête coupante. La surface inférieure comporte au moins un ensemble de surfaces de butée de base, chaque ensemble incluant au moins une grande surface de butée de base et une petite surface de butée de base. La grande et la petite surface de butée de base du premier ensemble se trouvent dans un premier plan de butée de base, la grande et la petite surface de butée de base du deuxième ensemble se trouvant dans un deuxième plan de butée de base. Le premier et le deuxième plan de butée de base forment entre eux un angle non nul.

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