Patent ID: 9421614
Filing Date: 2016-08-23
CPC Classification: B23B,B23G,Y10T

Claim Text:
1. A cutting tool comprising a tool holder with a pocket and a cutting insert in the shape of a polygon having side surfaces, wherein: the pocket is provided with a base support surface, a first lateral support surface and a second lateral support surface, an undercut is provided at a juncture of the first and second lateral support surfaces, the cutting insert is releaseably securable in the pocket with a first side surface of the insert abutting the first lateral support surface of the pocket and a second side surface of the insert abutting the second lateral support surface of the pocket, and such that a cutting corner, which is disposed between the first side surface and the second side surface, is supported adjacent or in said undercut, without touching the lateral support surfaces of the pocket, all side surfaces of the insert are provided with a notch extending in an axial direction of the insert, the first lateral support surface is provided with a rib element protruding from the first lateral support surface and extending in an axial direction of the insert, wherein the rib element is complementary to said notches and interacts with a notch at the first side surface for providing an end stop of the cutting insert in the pocket, the second lateral support surface is not provided with a rib element, the second side surface contacts the second lateral support surface in two contact zones adjacent to the notch provided on the second side surface, and the pocket is open towards at least one side perpendicular to the base support surface, wherein the rib element has a front face facing towards the open side of the pocket; and wherein said cutting insert is triangular with three cutting corners, whereby when said cutting insert is releaseably secured in the pocket, one cutting corner is presented while the other two cutting corners are received in the pocket without touching the lateral support surfaces of the pocket.