FIELD: molding.
SUBSTANCE: replaceable cutting head (22) includes forward cutting portion (26) and rearward mounting portion (28). Mounting portion includes male coupling member (40) that protrudes rearwardly from base surface (42). Male coupling member includes three circumferentially spaced apart head fixation members (44), where each head fixation member has head peripheral surface (46) that spirals inwardly in a direction against direction of rotation (R) and diverges. Tool holder (24) includes female coupling member (52) which extends rearwardly from holder forward surface (54). Female coupling member includes three circumferentially spaced apart holder fixation members (56), where each holder fixation member has holder peripheral surface (58) that diverges rearwardly. When a cutting tool (20), which includes said cutting head and tool holder, is in a locked position, the male coupling member of the replaceable cutting head is removably retained within the female coupling member of the tool holder by means of a self-lock mechanism.
EFFECT: increased accuracy and reliability of positioning the head relative to the holder is achieved.
22 cl, 16 dwg
