Equipment with a detachable accessory and assembly for a machining lathe, and machining lathe with digital control

Equipment for a machining lathe with digital control, the equipment comprising:

• a movable carriage,
• a tool support system with integrated drive which is mounted on the movable carriage so as to be able to pivot about a pivot axis and which comprises at least one mounting location to detachably receive at least one detachable accessory to support and drive a tool, and a plurality of permanent sub-assemblies each for supporting and driving at least one rotary tool,
• an actuating device able to cause the tool support system with integrated drive to pivot with respect to the movable carriage, about the pivot axis,
• a permanent drive device comprising engaging means making it possible to establish a kinematic connection to communicate drive from the permanent drive device to the detachable accessory, and a transmission mechanism for driving the detachable accessory,
• the transmission mechanism comprising rotary units each of which is part of one of the permanent sub-assemblies in such a way that the driving of the detachable accessory is effected via the permanent sub-assemblies,
• wherein the rotary units of the permanent sub-assemblies are in succession with one another and mesh with one another.