Patent ID: 7147407

Claim:
An indexable cutting insert, for use in a cutting tool for milling operations, comprising: two identical generally rhomboidal opposing end surfaces; a peripheral side surface extending between the two opposing end surfaces, the peripheral side surface being perpendicular to a median plane of the cutting insert and comprising six component side surfaces, four of the component side surfaces being generally flat major side surfaces and two of the component side surfaces being diametrically opposing radiused corner side surfaces, each corner side surface being located between and merging with two adjacent major side surfaces; two first cutting edges and two second cutting edges associated with each end surface, each first cutting edge forming a non-zero first angle with respect to the median plane end each second cutting edge forming a non-zero second angle with respect to the median plane, the two first cutting edges associated with a given end surface being skew to each other and being located in associated major side surfaces that are parallel to each other, and the two second cutting edges associated with a given end surface being skew to each other and being located in associated major side surfaces that are parallel to each other; two corner cutting edges associated with each end surface, each corner cutting edge merging with one first cutting edge and with one second cutting edge and forming therewith a continuous cutting edge section; each of the four major side surfaces includes one of said first cutting edges and one of said second cutting edges, said one of said first cutting edges and said one of said second cutting edges extending from proximate a common corner side surface towards the median plane; two opposing flat end regions, one flat end region associated with each end surface, the median plane being parallel to each flat end region; a through bore extending between the flat end regions, the through bore having an axis defining an axial direction of the cutting insert, the flat end regions forming axially outermost protruding regions of the cutting insert.