Patent ID: 6341924
Filing Date: 2002-01-29
Classification: B23B,Y10T

Abstract:
An indexable insert for the turning of grooves comprising:an upper surface; a lower surface substantially parallel to the upper surface; and a plurality of connecting side surfaces extending between the upper surface and the lower surface and arranged such that said insert is generally triangular and defines three cutting corners; wherein a projection is disposed at each cutting corner of the insert, each projection having an upper side, a lower side, and a cutting edge arranged substantially at a right angle to a direction of grooving of the insert, wherein each projection includes a first edge and a second edge which are each connected to the cutting edge and diverge in the direction of grooving, each of the first edge and the second edge including a flank, and wherein each projection is arranged totally outside a triangle defined by an imaginary inscribed circle against which each connecting side surface of the insert lies tangentially, and the flank connected to the first edge of the projection has one uninterrupted flat surface whilst the flank connected to the second side surface comprises first and second partial surfaces, the first partial surface running unbroken from the upper side of the projection to connect at an obtuse angle to the second partial surface running unbroken from the lower side.