FIELD: turning; drilling.
SUBSTANCE: cutting tool holder blade (100, 101) is formed of hard alloy, said cutting tool holder blade (100, 101) having front plane (F), perpendicular mid-plane (P). Insert pocket (104) of holder blade (100, 101) has base jaw (106) and clamping jaw (110) resiliently connected to base jaw (106) in a unitary one piece construction. Base jaw (106) has base jaw abutment surface (108) and clamping jaw (110) has clamping surface (112) facing opposite base jaw abutment surface (108), and insert stop surface (114). Curved inner surface (116) extends from base jaw abutment surface (108) towards clamping jaw (110) and along clamping jaw (110), wherein curved inner surface (116) has front extremity portion (118). Clamping jaw (110) is narrowed down adjacent front extremity portion (118), such that clamping surface (112) overhangs front extremity portion (118) of curved inner surface (116), in a direction towards base jaw (106) and away from front plane (F).
EFFECT: higher reliability of fastening the cutting insert in the plate holder.
16 cl, 8 dwg
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