Cutting Tool and Method for Extracting Cutting Insert Therefrom

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 (DF, DR), and
• a holder passage (66) extending along a holder passage axis (AH) and opening out to at least one of the two side surfaces (60), the holder passage axis (AH) containing a holder passage centre point (CH);
• 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 (L1H, L2H) parallel to the holder longitudinal axis (B);
• the holder passage centre point (CH) 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 (AI) and opening out to the opposing lateral surfaces (36), the insert passage axis (AI) containing an insert passage centre point (CI);
• 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 (L1I, L2I) 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 (P1) containing the holder passage axis (AH) and the insert passage axis (AI) forms a first angle (α) with a main plane (P2) perpendicular to the insert longitudinal axis (A) and containing the insert passage axis (AI);
• and
• the first angle (α) is less than or equal to 60°.