METHOD AND SYSTEM FOR FABRICATING A POROUS STRUCTURE BASED ON EXTRUSION-BASED ADDITIVE MANUFACTURING, AND POROUS STRUCTURE THEREOF

A method of fabricating a porous structure based on extrusion-based additive manufacturing is provided. The method includes: controlling a print head of an extruder to move along a print path for extruding a material along the print path on a print bed for fabricating the porous structure; and contr...

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO, Michinao, NG, Jian Yi Mervin
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of fabricating a porous structure based on extrusion-based additive manufacturing is provided. The method includes: controlling a print head of an extruder to move along a print path for extruding a material along the print path on a print bed for fabricating the porous structure; and controlling an extrusion flow rate of the extruder, while the print head is being controlled to move along the print path for extruding the material, for forming a plurality of pores of the porous structure. In particular, for each pore of the plurality of pores, the above-mentioned controlling the extrusion flow rate includes adjusting the extrusion flow rate with respect to a first section of the print path to form a first extruded material portion along the first section of the print path and adjusting the extrusion flow rate with respect to a second section of the print path to form a second extruded material portion along the second section of the print path, the second extruded material portion formed being adjacent to and opposing the first extruded material portion formed, such that a space is formed therebetween constituting the pore. A corresponding system for fabricating a porous structure is also provided, as well as the porous structure fabricated. Un procédé de fabrication d'une structure poreuse basé sur la fabrication additive à base d'extrusion est prévu. Le procédé consiste à : commander le déplacement d'une tête d'impression d'une extrudeuse le long d'un trajet d'impression pour extruder un matériau le long du trajet d'impression sur un lit d'impression pour fabriquer la structure poreuse; et commander un débit d'extrusion de l'extrudeuse pendant la commande du déplacement de la tête d'impression le long du trajet d'impression pour extruder le matériau, afin de former une pluralité de pores de la structure poreuse. Plus précisément, pour chaque pore de la pluralité de pores, le réglage susmentionné du débit d'extrusion consiste à régler le débit d'extrusion pour une première section du trajet d'impression afin de former une première partie de matériau extrudé le long de la première section du trajet d'impression et à régler le débit d'extrusion pour une seconde section du trajet d'impression afin de former une seconde partie de matériau extrudé le long de la seconde section du trajet d'impression, la seconde partie de matériau extrudé formée étant adjacente et opposée à la première partie de matériau extrudé formée, de telle sorte qu'un espace form