Patent ID: 8313270

Claim:
A cutting tool, comprising at least one cutting portion, the at least one cutting portion ( 16 ) comprising: an insert pocket ( 18 ) having a cutting insert ( 20 ) releasably retained therein, wherein the cutting insert ( 20 ) has a top surface ( 22 ), a bottom surface ( 24 ), and a peripheral surface ( 26 ) extending therebetween, the peripheral surface ( 26 ) comprising two opposing major sides ( 28 ) and two opposing minor sides ( 30 ); the bottom surface ( 24 ) comprises a plurality of engagement surfaces, of which a plurality of operative engagement surfaces engage an attachment surface ( 32 ) of the insert pocket ( 18 ) in a respective plurality of sloping and non-sloping engagement regions; the plurality of operative engagement surfaces comprising: first and second spaced apart operative sloping surfaces ( 34 ′, 36 ′), whose respective sloping engagement regions ( 80 , 82 ) lie in a first plane forming an acute angle (α) with a first median plane (M 1 ) of the cutting insert ( 20 ); an operative inner sloping surface ( 38 ′) whose respective inner sloping engagement region ( 88 ) lies in a second plane forming an obtuse angle (β) with the first median plane (M 1 ), the acute and obtuse angles (α, β) being measured in the same direction from the first median plane (M 1 ); and operative first and second corner surfaces ( 40 ′, 42 ′) whose respective non-sloping corner engagement regions ( 72 , 74 ) lie in a third plane that is substantially perpendicular to the first median plane (M 1 ) and to a second median plane (M 2 ) of the cutting insert ( 20 ), the second median plane (M 2 ) being perpendicular to the first median plane (M 1 ); wherein the operative first and second sloping surfaces ( 34 ′, 36 ′), and the operative inner sloping surface ( 38 ′) are located on a first side of the first median plane (M 1 ), and the operative first and second corner surfaces ( 40 ′, 42 ′) are located on a second side of the first median plane (M 1 ).