Additive manufacturing method and system for complex structure

Abstract

The invention discloses an additive manufacturing system for a complex structure. The additive manufacturing system comprises a workbench, a 3D printing device, a laser forging device and a master control device. The 3D printing device comprises a powder supplying nozzle, a 3D printing mechanical arm used for driving the powder supplying nozzle to move relative to the workbench and a laser generator connected with the powder supplying nozzle. The laser forging device comprises a shot blasting nozzle, a laser shot blasting mechanical arm used for driving the shot blasting nozzle to move relative to the workbench and a pulse laser generator connected with the shot blasting nozzle. The master control device is electrically connected with the 3D printing device and the laser forging device to control moving of the 3D printing mechanical arm and the laser shot blasting mechanical arm. The invention further discloses an additive manufacturing method for the complex structure. By applying the additive manufacturing system and method, the mechanical strength of a part subjected to double-laser printing and forging is greatly improved, and the mechanical comprehensive performance is improved. Thus, the part structure can be further optimized, the structure is improved, the size is reduced, and finally, weight losing is achieved.

Description

technical field [0001] The present invention relates to the field of manufacturing technology, more specifically, relates to an additive manufacturing method for complex structures, and also relates to an additive manufacturing system for complex structures. Background technique [0002] Manufacturing can be divided into three types, such as casting, forging and welding-based equal-material manufacturing, turning, milling, planing and grinding-based subtractive manufacturing, and 3D printing-based additive manufacturing. The principle of 3D printing is to decompose the three-dimensional model designed by the computer into several layers of plane slices, and then the 3D printer superimposes the printing materials layer by layer according to the slice layers, and finally accumulates into a complete object. 3D printing processes include stereolithography printing (SLA), laser sintering printing (SLS), fused deposition printing (FDM), etc., among which laser sintering printing u...

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Problems solved by technology

[0006] In view of this, the first object of the present invention is to provide an additive manufacturing system with a complex structure. The structural design of the additive manufacturing system can effectively solve the difficulties in processing complex structural parts, long production cycle, and poor compactness of 3D printing products. , residual stress is large, and the comprehensive mechanical properties cannot meet the requirements. The second purpose of the present invention is to provide a method for additive manufacturing of complex structures

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