CUTTING TOOL AND CUTTING INSERT THEREFOR

摘要

A cutting tool (10) having replaceable indexable cutting insert (20) retaine d in insert pockets (18). Each insert pocket (18) has a base wall (24) and fir st and second rear sidewall (40, 42) sections. A generally circular recess (28) having a peripheral wall (32) extends downwardly from the base wall (24). A first abutment surface (52) located on the first rear sidewall section (40) abuts a first support surface (52~)located on the side surface (64) of the cutting insert (20), a second abutment surface (56~) located on the side surface (64) of the cutting insert (20), and a third abutment surface (58) located on the peripheral wall (32) of the recess (28) abuts a third support surface (58~) located on the cylindrical protrusion (82) of the cutting inse rt (20).