The invention belongs to the technical field of 3D printing additive manufacturing, and provides a large-breadth 3D printing local area double-camera
grafting printing device and method.The large-breadth 3D printing local area double-camera
grafting printing device comprises an image collecting device, a high-precision
ceramic calibration plate, a to-be-grafted part clamp and a printing equipment upper computer; the double cameras are fixed on an equipment top plate through supports, the
field of view of the large-field-of-
view camera completely covers the whole breadth of the substrate, and the
field of view of the small-field-of-
view camera completely covers a local area to be grafted; the calibration plate is divided into two specifications of adaptive double cameras, the clamp can be used for detaching and fixing parts and leveling a
grafting surface, and the upper computer is electrically connected with the double cameras and the printing equipment to receive positioning data and adjust a printing model; according to the method, the grafting precision is smaller than or equal to 0.1 mm, the total cost of the double cameras is reduced, the manual
workload is reduced, the problems that according to an existing scheme, coverage and precision are contradictory, cost is high, and
automation is low are solved, and the method is suitable for large-format 3D printing local grafting scenes.