Auxiliary positioning structure based on multi-laser SLM printer

The auxiliary positioning structure based on the multi-laser SLM printer comprises a supporting frame, a powder cylinder is arranged on the upper surface of the supporting frame, a printer body is fixed to the position, located on one side of the powder cylinder, of the upper surface of the supporting frame, a laser lens is arranged on the lower surface of the printer body, and a vertical plate is fixedly connected to the upper surface of the supporting frame; a square through groove is formed in the vertical plate, the side wall of the square through groove is fixedly connected with a shell, a dust removal device is arranged in the shell, and the dust removal device is used for cleaning the laser lens; by arranging the dust removal device, dust removal treatment is conducted on the laser lens, the situation that dust on the laser lens affects a laser drop point, consequently, positioning errors of a laser printing starting point are caused, and workpiece forming is affected is avoided, the cleanliness of the