Patent ID: 7101121
Filing Date: 2006-09-05
Classification: B23C,Y10T

Abstract:
1. A cutter insert for a disc-milling cutter, comprising upper and lower surfaces joined by peripheral side surfaces, a first of the side surfaces defining a cutting face extending from a second side surface to a third side surface and forming two substantially ninety degree corners with respective ones of the second and third side surfaces as viewed in a direction toward the upper surface; the upper surface including a center portion and two raised projections; the projections being disposed at respective ones of the two corners, wherein a transition edge defined between the upper surface and the cutting face includes a central edge portion and two raised edge portions disposed at opposite ends of the transition edge and defined by respective ones of the projections, each of the raised edge portions defining a main cutting edge which transforms into a minor cutting edge defined by a respective one of the two corners, wherein the two minor cutting edges are convergent in a direction toward the bottom surface.