DLP AND FDM-BASED COMPOSITE MULTI-MATERIAL ADDITIVE MANUFACTURING APPARATUS AND METHOD

A DLP and FDM-based composite multi-material additive manufacturing apparatus, comprising a DLP optical engine mask exposal portion at an upper layer, an FDM two-dimensional movement switchable print head system at a middle layer, and a lifting/lowering movement printing platform system at a lower layer, the three layers being connected by means of mechanical parts to form an upper-middle-lower stepped configuration. A method for carrying out composite multi-material additive manufacturing by using the apparatus. After a photosensitive resin is subjected to exposal machining prototyping by means of a DLP optical engine, a machining plane is subjected to precise positioning before machining method switching, the remaining machining is carried out by using an FDM head according to design or structural requirements, and meanwhile, a head switching device can be used to implement replacement and machining processes of different materials to achieve material switching; operating repeatedly in this way can achieve multi-material gradient additive manufacturing. In the apparatus and the method, DLP light curing and FDM fused deposition modeling technologies are combined to achieve multi-material composite additive machining; by using simple machining method switching, device space is effectively saved, actions between working procedures are coherent, the prototyping time is saved, and the cost is reduced.


» Number: WO2022222184A1 (A1)

» Publication Date: 27/10/2022

» Applicant: NANJING UNIV OF AERONAUTICS AND ASTRONAUTICS?[CN]

» Inventor: SHEN LIDA?[CN]; WU HAIDONG?[CN] (5)

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737


                   




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