Study on Buckle Printing Method for Preparing Lattice Structure by FDM
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摘要: 熔融沉积技术（Fused deposition modeling，FDM）打印晶格点阵结构时，存在着打印件机械性能差、支撑材料难去除的问题。针对这些问题，本文将晶格结构体分解成数个二维模型，通过FDM进行分体打印然后利用卡扣配合重新组装。利用这种分体打印工艺深入探索了BCC、BCC-Z、F2CC和F2CC-Z这4种典型结构类型的晶格体结构的表面形貌和机械性能，并与传统一体式打印进行对比。发现该卡扣式分体方法实现了打印物体表面质量的改善、打印时间和打印材料的节省以及抗压性能的提升。该研究为实现3D打印制备晶格结构体提供了一种途径，并为选择合适的晶格类型提供了参考。Abstract: When the lattice structure is printed by the melt deposition technology, there are some problems, such as poor mechanical properties and difficult removal of supporting materials. To solve those problems, the lattice structure is decomposed into several two-dimensional models, printed by FDM, and then reassembled by using the snap fit. Using this split printing, the surface morphology and mechanical properties of four typical lattice structures of BCC, BCC-Z, F2CC and F2CC-Z are deeply explored, and comparing with the traditional integrated printing. It is found that the snap split method can improve the surface quality of the printed objects, save the printing time and printing materials, and improve the compressive performance. The present study provides a way to prepare lattice structures by 3D printing, and provides a reference for selecting the appropriate lattice types.
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Key words:
- 3D printing /
- melt deposition technology /
- snap fit /
- lattice structur
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