考虑熔融沉积成型工艺稳定性的参数优化设计

Parameter Optimization Design Considering the Stability of the Fused Deposition Modeling Process

为了提高熔融沉积成型(Fused deposition modeling,FDM)工艺的生产速度和产品交货速度,需要增加3D打印设备数量或实施分布式本土化生产来扩大产能。因此,提高FDM工艺在批量化生产中的工艺稳定性和生产效率,将成为FDM技术未来广泛应用于工业领域的关键。该研究的目标是通过选择合适的FDM工艺参数设置,实现在较低的打印成本下相同型号或不同型号的3D打印机所打制件质量的一致性。首先,将高斯过程模型与裂区试验设计相结合,研究制件的压缩形变、打印时间和消耗线材的长度与关键工艺参数之间的关系。然后,考虑到工艺过程中的不确定性,利用区间数的距离来度量不同打印机所打制件压缩形变的裂区效应。最后,综合考虑裂区效应和打印成本建立多目标优化方案,获得FDM工艺的最优参数设计值。验证实验的结果说明了所提方法的有效性和可行性。该研究为实现FDM技术的标准化和产业化提供了重要思路。

In order to improve the production speed and product delivery speed of the fused deposition modeling(FDM)process,it is necessary to increase the number of 3D printing equipment or implement distributed localization production to expand production capacity.Therefore,improving the process stability and production efficiency of the FDM process in mass production will become the key to the wide industrial application of FDM technology in the future.This study aims to achieve consistency in the quality of parts printed by the same model or different models of 3D printers at a low printing cost by selecting the appropriate FDM process parameter settings.Firstly,the Gaussian process model is combined with a split-plot experimental design to study the relationship between compressive deformation,printing time,the length of the consumed wire,and critical process parameters.Then,considering the uncertainty in the printing process,the distance of the interval number is used to measure the split-plot effect of the compressive deformation of parts printed by different printers.Finally,the multi-objective optimization scheme is established by considering the split-plot effect and printing cost to obtain the optimal parameter design value of the FDM process.The results of the validation experiments illustrate the effectiveness and feasibility of the proposed method.This study provides an important idea for the standardization and industrialization of FDM technology.