Patent ID: 7976250

Claim:
A double-sided cutting insert having a plurality of convex cutting edges, said double-sided cutting insert comprising: a. a top face and a bottom face separated by a virtual middle plane; b. at least three convex cutting edges on each of said top and bottom faces, each convex cutting edge having at least a curved cutting edge region; c. at least three nose corners on each of said top and bottom faces, each nose corner connecting two of said convex cutting edges; d. at least three peripheral side surfaces extending from each of said top and bottom faces to said virtual middle plane, each peripheral side surface comprising: i. a primary conical peripheral surface extending from a curved cutting edge region toward said virtual middle plane; and ii. a secondary conical peripheral surface extending from a nose corner toward said virtual middle plane; and e. at least three lateral seating surfaces, each lateral seating surface formed on an adjacent pair of peripheral side surfaces of said top and bottom faces, such that each lateral seating surface defines a common lateral seating surface for both said top and bottom faces.