Patent ID: 8534966

Claim:
A cutting tool ( 10 ) having an axis of rotation (L) around which the cutting tool ( 10 ) rotates in a direction of rotation (R), the cutting tool ( 10 ) comprising: a tool shank ( 14 ) having a forward end ( 60 ) provided with a female fixation member ( 88 ); and a replaceable self-clamping cutting head ( 12 ) provided with a male fixation member ( 24 ); wherein: the male fixation member ( 24 ) has a resilience slit ( 28 ); the replaceable cutting head is resiliently secured to the forward end ( 60 ) of the tool shank ( 14 ) by an interference fit between the male fixation member ( 24 ) and the female fixation member ( 88 ) at mutual abutment regions ( 100 ); in each cross section of the cutting tool ( 10 ) taken perpendicular to the axis of rotation (L) through the mutual abutment regions ( 100 ), cross sectional profiles of the mutual abutment regions ( 100 ) comprise mutual arcuate sectors; a transmission member ( 50 ) protrudes from a rotationally trailing surface ( 46 ) of the cutting head ( 12 ); the transmission member ( 50 ) has an upper surface ( 52 ) facing in an axially forward direction, a base surface ( 54 ) facing in an axially rearward direction, and a cutting head torque transmission wall ( 58 ) generally facing opposite the direction of rotation (R) and located between the upper and base surfaces ( 52 , 54 ).