Friction additive manufacturing machine with mixing, stirring and heating functions

The invention discloses a friction additive manufacturing machine capable of mixing, stirring and heating, and belongs to the field of friction stir additive manufacturing. The device comprises an additive manufacturing part, a feeding device and an objective table, wherein the additive manufacturing part comprises a spindle box body, an upper stirring head and a lower stirring head; the upper stirring head is fixed on a shaft of the spindle box body and can rotate along with the shaft, and a spiral bulge is arranged on the outer wall; the coaxial sleeve is sleeved outside the upper stirring head, and a gap is reserved between the coaxial sleeve and the upper stirring head for feeding materials; a spiral groove is formed in the inner wall of the lower stirring head; a resistance wire B is wound on the outer wall of the lower stirring head; the feeding device comprises a linear propeller, a sliding rail, a supporting frame, a fixing table and a discharging barrel. The linear propeller can move on the sliding r