Turret for tool machine

A turret (100), for a tool machine, for holding at least two rotating tools and for turning at least one of the at least two rotating tools for machining a piece at the tool machine, said turret comprising:

• a turret body (4) configured to be supported by the tool machine;
• a rotating drum (5) supported by said turret body (4) and supporting at least two tool holders (3) upon which are mounted the at least two rotating tools (40), said rotating drum (5) being externally rotatable around said turret body (4);
• an electrical spindle (2) positioned in a recess inside the turret body (4), said electrical spindle (2) extending around a vertical axis (Y-Y),
• said electrical spindle (2) including a motor, a rotating shaft (39) for transmission of rotational movement of said motor, and an engagement portion (6) movable to couple to a corresponding one of the at least two tool holders (3),
• each of said tool holders (3) being positionable to extend along said vertical axis (Y-Y),
• the rotating drum (5) being rotatably mounted around said turret body (4) in such a way as to rotate so as to align one tool holder of said tool holders (3) with said engagement portion (6) to thereby establish an aligned tool holder (3) that is aligned with said engagement portion (6) so as to receive and engage with said engagement portion (6),
• wherein a mounted rotating tool (40) of said aligned tool holder is actuated in rotation by said rotating shaft (39) through a direct physical coupling with an engagement end portion of said rotating shaft (39) being directly engaged with said aligned tool holder (3) to thereby establish a direct engagement between the engagement end portion of said rotating shaft (39) and the aligned tool holder (3),
• wherein an end of said rotating shaft (39) has a rod (99) provided thereon, and a head end of the rod (99) has a cylindrical plier (50),
• wherein said head end of said rod (99) is slideable along a direction of the vertical axis (Y-Y) in relation to said cylindrical plier (50) in a manner that causes an outer diameter of said cylindrical plier (50) to change, and
• wherein each one of said tool holders (3) comprises a seat configured to house said cylindrical plier (50);
• and
• a translation group for vertically translating said electrical spindle (2) along the vertical axis (Y-Y), the translation group vertically translating said electrical spindle, including the motor, the rotating shaft (39), and the engagement portion (6), between:
• i) a first working position wherein at least a portion of said aligned tool holder (3) is engaged with said engagement portion (6), and
• ii) a second tool change position where said aligned tool holder (3) is disengaged from the engagement portion (6).