熔丝成型制品三维表面粗糙度的理论与实验研究

doi:10.12068/j.issn.1005-3026.2022.09.011

摘要/Abstract

摘要： 熔丝成型(fused filament fabrication，FFF)是通过挤出材料丝相互堆积、累加形成三维实体的一种增材制造技术，而逐层累加的制造工艺使得FFF制品的表面质量存在明显缺陷.为提出有效的改进措施，需明确FFF制品表面粗糙度的产生机理.基于结合颈成型过程，以材料丝表面轮廓为研究对象，创建了基于横、纵两向结合颈垂直/平行于纤维方向的表面粗糙度数学模型.制备FFF样件，利用激光显微镜获取样件表面粗糙度.理论与实验结果验证了模型的正确性，为FFF制品表面质量的改进与提高提供了理论依据和技术支持.

关键词: 熔丝成型；结合颈；表面粗糙度；理论模型；实验研究

Abstract: Fused filament fabrication(FFF)is an additive manufacturing technology that forms three-dimensional(3D)entities by stacking and accumulating extruded material filaments. However， the surface quality of FFF products has obvious defects due to the layer-by-layer manufacturing characteristics. To effectively improve the FFF products’ surface quality， it is necessary to analyze the generation mechanism of surface roughness. Based on the bonding neck forming process， the surface profile of the material filament was investigated， and the theoretical model of the sample’s surface roughness in two directions(vertical and parallel to the fiber direction)was established based on the transverse and longitudinal bonding neck forming process. The FFF sample was prepared， and the surface roughness of the sample was obtained using a laser microscope. The theory and experimental results verified the correctness of the model， providing theoretical basis and technical support for improving the surface quality of FFF products.

Key words: fused filament fabrication(FFF); bonding neck; surface roughness; theoretical model; experimental study

中图分类号:

TP20

姜世杰，胡科，陈丕峰，战明. 熔丝成型制品三维表面粗糙度的理论与实验研究[J]. 东北大学学报（自然科学版）, 2022, 43(9): 1290-1297.

JIANG Shi-jie， HU Ke， CHEN Pi-feng， ZHAN Ming. Theoretical and Experimental Investigation on the Three-Dimensional Surface Roughness of Fused Filament Fabrication Products[J]. Journal of Northeastern University(Natural Science), 2022, 43(9): 1290-1297.

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