ASSEMBLY COMPRISING RHOMBUS SHAPED INSERT AND SUPPORT SEAT AND RHOMBUS SHAPED REVERSIBLE CUTTING INSERT

摘要

An assembly (20) of a generally rhombus shaped reversible (i.e. double sided) cutting insert (22) and a support seat (24). Each end surface (26) of the cutting insert (22) has a corner abutment surface (38) adjacent each nose cutting edge (36) at least one inner abutment surface (40a 40b) on one side of a lateral plane (P2) and at least one inner abutment surface (40a 40b) on the opposite side of the lateral plane (P2) and each corner abutment surface (38) is located closer to a median plane (M) than its adjacent nose cutting edge (36). In each index position of the cutting insert (22) on the support seat (24) only one corner abutment surface (38) is in operative contact with one (44a) of a plurality of protruding supporting members (44a 44b 44c) of the support seat (24) and only the at least one inner abutment surface (40a 40b) located on the opposite side of the lateral plane (P) from the operative corner abutment surface (38) is in contact with the at least one remaining supporting member (44b 44c).