The utility model belongs to boring cutter technical field, concretely relates to lightened high accuracy
processing modular boring cutter, including all adopt steel and coaxial splicing's front tool body, rear tool body and intermediate core
machine, the outer
diameter of rear tool body is greater than the outer
diameter of front tool body, front tool body and rear tool body all have two or more than two circumferential distribution's
cantilever, all install boring blade and guide strip on every
cantilever, the inside of intermediate core
machine has hollow inner chamber and axial liquid
cooling channel along its axial direction extension, the outside has lightened hole and annular liquid cooling tank, the front tool body and rear tool body all are equipped with sealed cavity, a plurality of blade liquid cooling channels with sealed cavity intercommunication and the export towards corresponding boring blade and a plurality of guide strip liquid cooling channels with sealed cavity intercommunication and the export between guide strip and boring blade, annular liquid cooling tank, axial liquid
cooling channel, blade liquid
cooling channel, guide strip liquid cooling channel and installation cavity all intercommunication. The utility model can consider boring cutter rigidity,
processing accuracy and
processing efficiency simultaneously, has greater market application prospect.