Patent ID: 8647029

Claim:
A cutting tool ( 20 , 120 ) comprising a holder blade ( 24 , 124 ) and a cutting insert ( 22 , 122 ) resiliently clamped in the holder blade ( 24 , 124 ), the holder blade ( 24 , 124 ) having a body portion ( 56 ) and a holding portion ( 58 ), the holding portion ( 58 ) having two opposing side surfaces ( 60 ) and comprising: an insert receiving slot ( 42 ) opening out to a holder front end surface ( 62 ) of the holder blade ( 24 , 124 ) and having a holder longitudinal axis (B) extending in a forward to rearward direction (D F , D R ), and a holder passage ( 66 ) extending along a holder passage axis (A H ) and opening out to at least one of the two side surfaces ( 60 ), the holder passage axis (A H ) containing a holder passage centre point (C H ); wherein the insert receiving slot ( 42 ) has a base jaw lower surface ( 64 ) facing in an upward direction (U), the base jaw lower surface ( 64 ) including at least one longitudinally extending base jaw clamping portion ( 78 ), each base jaw clamping portion ( 78 ) containing a linear holder imaginary line (L 1 H , L 2 H ) parallel to the holder longitudinal axis (B); the holder passage centre point (C H ) is located downwardly from the base jaw lower surface ( 64 ); the cutting insert ( 22 , 122 ) has an insert longitudinal axis (A) parallel to the holder longitudinal axis (B) and comprises; opposing insert upper and lower surfaces ( 28 , 30 ) with a peripheral surface ( 32 ) extending therebetween and a cutting edge ( 34 ) associated with the insert upper surface ( 28 ), the peripheral surface ( 32 ) comprising two opposing lateral surfaces ( 36 ); and an insert passage ( 38 ) extending along an insert passage axis (A I ) and opening out to the opposing lateral surfaces ( 36 ), the insert passage axis (A I ) containing an insert passage centre point (C I ); wherein the insert lower surface ( 30 ) includes at least one longitudinally extending lower clamping portion ( 52 ), each lower clamping portion ( 52 ) containing a linear insert imaginary line (L 1 I , L 2 I ) parallel to the insert longitudinal axis (A); the at least one lower clamping portion ( 52 ) is in clamping contact with the at least one base jaw clamping portion ( 78 ) and the cutting insert ( 22 , 122 ) is located in a rearmost position in the insert receiving slot ( 42 ) defining an assembled state; a passage plane (P 1 ) containing the holder passage axis (A H ) and the insert passage axis (A I ) forms a first angle (α) with a main plane (P 2 ) perpendicular to the insert longitudinal axis (A) and containing the insert passage axis (A I ); and the first angle (α) is less than or equal to 60°.