基于灰关联度分析的FDM工艺参数优化研究

Optimization of Process Parameters in Fused Deposition Modeling(FDM) Based on Degree of Grey Incidence

针对熔融堆积成型工艺中的加工时间、尺寸精度、翘曲变形3个指标,选择线宽补偿(A)、挤出速度(B)、填充速度(C)和层厚(D)4个工艺参数作为控制因子。首先,通过正交实验确定控制因子对单个指标的影响程度,然后进一步利用灰关联度分析确定控制因子对综合指标的影响程度及最佳工艺参数组合方案。结果表明对综合工艺指标影响的主次顺序为A、D、C、B,最佳制作参数组合为A1B3C3D3。

Wire-width compensation（A）,extrusion velocity（B）,filling velocity（C） and layer thickness（D） are selected as controlling factors in fused deposition modeling（FDM）.First,the influence degree of process parameters on one of indexes such as dimensional accuracy,warpage deformation and process time is determined by orthogonal experiment.Then,the influence degree of process parameters on synthetic indexes and the optimal combination of process parameters are determined using the degree of grey incidence.The expeiment result shows that the order of significance of the influence of these process parameters on the synthetic indexes is A-D-C-B,and the optimal combination of the process parameters is A1B3C3D3.