the storage unit (61) of the tools (27) and a drum (62) having a prismatic set of cells (73) which may be incorporated into individual tools (27).or tools (27) housed in a container (29).the device (93) for the tool (27) includes a pair of clamps (101, 102) operable individually and take off the table portapiastre (14).the clamp (101, 102) are moved simultaneously in the direction perpendicular to the axis of the drum (62) for the extraction or insertion of the tool (27) on the drum (62) or the spindle (26).the table (14) is instead move the tool (27) between the drum (62) and the spindle (26).a sensor (128) of the tip of the tool (27) inserted in the mandrel (26) enables an adjustment of the axial position of the tool (27) in the mandrel (26).figura 11
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