Machining and positioning system for aerospace irregular parts and discrete intelligent production line therefor

A machining and positioning system for aerospace irregular parts, comprising:

• a self-positioning device, wherein the self-positioning device comprises three ball heads connected to a base and arranged around an axis of the base, the three ball heads are respectively connected to a rotating frame through connecting rods, and the rotating frame drives the three ball heads to move back and forth radially along the base to abut an inner wall of a casing;
• a plurality of clamping devices, wherein the plurality of clamping devices are arranged around the axis of the base, each of the plurality of clamping devices comprises a press head connected to an opening and closing mechanism and a translation mechanism, the translation mechanism drives the press head to move radially along the base, and the press head is capable to press against an outer wall of the casing;
• a plurality of support devices, wherein the plurality of support devices are connected to the base through a lifting device, and the plurality of support devices are arranged around the axis of the base;
• each of the plurality of support device comprises an action mechanism and a support block, an output end of the action mechanism is connected to the support block through a universal joint, and the support block is attached with a plurality of piezoelectric plates on a side of the inner wall of the casing.