Cutting insert

Details Cutting insert Cutting insert

B - Operations, Transporting

23

C

B23C 3/06 (2006.01) B23C 5/20 (2006.01)

Patent

CA 2617619

The invention relates to a cutting insert, in particular for machining crankshafts, having two base surfaces (10, 11) which are arranged parallel to one another and through which a respective hole (12) passes for receiving a clamping screw and which merge at their shorter edges into rounded end faces which are each defined laterally by cutting edges. According to the invention, at least one pair of the cutting edges is of stepped design and has two convex sections (13, 14) and a concave section (15) lying in between, wherein the outer convex section (13) extends over an angle of 180~.

L'invention concerne une plaquette de coupe, destinée notamment à l'usinage de vilebrequins, comportant deux surfaces de base parallèles (10, 11) qui sont traversées par un orifice (12) servant à recevoir une vis de serrage et qui se transforment, au niveau de leurs arêtes courtes, en faces arrondies délimitées chacune latéralement par des arêtes de coupe. Selon l'invention, au moins une paire d'arêtes de coupe présente des gradins et comporte deux parties convexes (13,14) ainsi qu'une partie concave (15) située entre ces dernières, la partie convexe extérieure (13) s'étendant sur un angle de 180°.

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