Rounded cutting insert

B - Operations – Transporting – 23 – C

Patent

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Details

B23C 5/20 (2006.01) B23B 27/16 (2006.01) B23C 5/24 (2006.01)

Patent

CA 2139860

A cutting insert intended to be fixed in a milling cutter is circle-round to an extent of about 3/4. The remaining fourth comprises two mutually substantially perpendicular side surfaces (4 and 5), whereby a part (6) of one of the two side surfaces adjacent to the corner between them forms a parallel land and is inclined so that it forms an obtuse angle with both said surfaces. By this rounded construction, the angle of the parallel land (the angle between the parallel land cutting edge (11) and the machined surface) can be adjusted very accurately, which results in smooth surfaces, without changing the preset clamping force of the cutting insert.

Une pièce rapportée, coupante, conçue pour se fixer dans une fraise est arrondie sur les trois quarts de sa surface. Le quart restant comprend deux surfaces latérales mutuellement et sensiblement perpendiculaires (4 et 5), une partie (6) d'une de ces deux surfaces latérales adjacentes à l'angle situé entre elles formant une face parallèle et étant inclinée de façon à former un angle obtus avec les deux surfaces latérales. De par cette structure arrondie, l'angle de la face parallèle (l'angle se trouvant entre le bord coupant (11) de la face parallèle et la surface usinée) peut être réglé très précisément, ce qui permet d'obtenir des surfaces lisses sans modifier la force de serrage prédéterminée de la pièce rapportée coupante.

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