Integrated additive, subtractive and repair friction stir device and method

An integrated additive, subtractive and repair friction stir device, wherein the device comprises a friction stir additive manufacturing (FSAM) module, a subtractive module, a wire feeding module, and a surface profile detection module, wherein

• the FSAM module is fixedly connected to a first rotor of a spindle;
• the FSAM module comprises a stirring tool and a compression ring, wherein a lower end of the stirring tool is inserted into the compression ring, the stirring tool comprises a first clamping end, a cutting portion, and stirring pins, and the first clamping end, the cutting portion, and the stirring pins are connected sequentially from top to bottom into an integral structure;
• an upper end of the compression ring is provided with a second clamping end, the second clamping end is fixedly connected to a stator of the spindle via fastening screws, and a lower end of the compression ring is provided with a shoulder;
• and a first wire feeding hole is formed in a side wall of the compression ring;
• the subtractive module is located in the FSAM module and fixedly connected to a second rotor of the spindle;
• and the subtractive module comprises a milling cutter, wherein an upper end of the milling cutter is fixedly connected to the second rotor of the spindle, and a second wire feeding hole is formed in a side surface of the milling cutter;
• the wire feeding module is configured to supply a wire material to the FSAM module and the subtractive module, respectively;
• and
• the surface profile detection module is detachably connected to the FSAM module and configured to perform real-time detection of a surface quality of a deposited layer, comprising performing a defect analysis on an acquired image to obtain a defect location, and a defect depth, and a defect type of the deposited layer, and the milling cutter is controlled by the spindle to remove a surface defect of the deposited layer by milling.