ADDITIVE MANUFACTURING APPARATUS AND METHOD

The invention relates to an additive manufacturing device and method. The device comprises a stirring needle, a shaft shoulder and a forming sleeve which are sequentially arranged from inside to outside in a sleeving mode. The stirring needle and the shaft shoulder are matched from top to bottom to form a powder feeding area, a heating area, a stirring area and a forming area which are communicated in sequence; the powder feeding area is used for conveying powder to the heating area, the heating area is used for heating the powder in the heating area so that the powder can be thermally plasticized to form a thermally plasticized material, the shaft shoulder can rotate around the axis of the shaft shoulder, the shaft shoulder can stir and rub the powder in the stirring area, and the forming area is used for restraining and extruding the thermally plasticized material. And stacking the thermoplastic material on the substrate to form the product. The device is simple in structure, small in machining allowance an