Patent ID: 9623495
Date: 2017-04-18
CPC Classifications: B23C

Claim:
1. A cutting insert, comprising: a first surface and an opposing, second surface, the first and second surfaces are substantially identical to each other; four peripheral side surfaces extending entirely between the first and second surfaces, the four peripheral side surfaces are substantially identical to each other; four curved corners extending entirely between the first and second surfaces and adjacent peripheral side surfaces; four cutting edges formed at the intersection between the first surface and the peripheral side surfaces, and four cutting edges formed at the intersection between the second surface and the peripheral side surfaces, each cutting edge being divided into a first portion and a second portion with a radius blend separating the first and second portions, wherein the cutting insert is symmetric about a first central axis, A wherein the first portion has a length, L wherein the first portion of each cutting edge is disposed at an angle θ relative to the second portion of the respective cutting edge when measured along the peripheral side surface adjacent the respective cutting edge, θ being less than 180°.