Cutting insert with grooved surface defining plural support surfaces

摘要

A cutting insert (21, 21') includes a first mounting surface (23, 23'), a second mounting surface (25, 25') on an opposite side of the insert (21, 21') from the first mounting surface (23, 23'), and a first side surface (27, 27') between the first mounting surface (23, 23') and the second mounting surface (25, 25'). The insert (21, 21') further includes a first groove (35) extending substantially diagonally across the first side surface (27, 27') and dividing the first side surface (27, 27') into discrete, separated, triangular first and second first side support surfaces (37 and 39), the first and second first side support surfaces (37 and 39) each being bounded along first and second edges thereof by rake surfaces (59, 65) forming non-zero angles with the first and second side support surfaces and along third edges thereof by the groove (35).