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1. WO2020133310 - 3D PRINTING METHOD EMPLOYING ADAPTIVE INTERNAL SUPPORT STRUCTURE

Publication Number WO/2020/133310
Publication Date 02.07.2020
International Application No. PCT/CN2018/125213
International Filing Date 29.12.2018
IPC
B29C 64/386 2017.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
B33Y 50/00 2015.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
CPC
B29C 64/386
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
64Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
30Auxiliary operations or equipment
386Data acquisition or data processing for additive manufacturing
B33Y 50/00
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
50Data acquisition or data processing for additive manufacturing
Applicants
  • 北京工业大学 BEIJING UNIVERSITY OF TECHNOLOGY [CN]/[CN]
Inventors
  • 毋立芳 WU, Lifang
  • 赵立东 ZHAO, Lidong
  • 毛羽忻 MAO, Yuxin
  • 杨天勤 YANG, Tianqin
  • 简萌 JIAN, Meng
  • 相叶 XIANG, Ye
  • 石戈 SHI, Ge
Agents
  • 北京永新同创知识产权代理有限公司 NTD UNIVATION INTELLECTUAL PROPERTY AGENCY LTD.
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) 3D PRINTING METHOD EMPLOYING ADAPTIVE INTERNAL SUPPORT STRUCTURE
(FR) MÉTHODE D'IMPRESSION 3D UTILISANT UNE STRUCTURE DE SUPPORT INTERNE ADAPTATIVE
(ZH) 基于自适应内部支撑结构的3D打印方法
Abstract
(EN)
A 3D printing method employing an adaptive internal support structure, comprising the following steps: S1 of extracting images from a reference biological structure diagram of a support structure, to obtain a multi-layer grid texture serving as a plurality of layer diagrams for an internal support structure of a three-dimensional model; S2 of separating multi-layer structures of the three-dimensional model layer by layer, and performing binarization and hollowing processing on each layer to obtain a plurality of images; S3 of merging each layer diagram obtained in step S1 with a corresponding image obtained in step S2, to obtain a plurality of final slice layer structures; S4 of determining a support region of the support structure in each slice layer according to strength requirements of the three-dimensional model; S5 of analyzing the three-dimensional model to perform adaptive structural design and adjusting a strength-material ratio; and S6 of restoring the three-dimensional model by using a three-dimensional reconstruction algorithm and printing the three-dimensional model.
(FR)
L'invention concerne une méthode d'impression 3D utilisant une structure de support interne adaptative, comprenant les étapes suivantes : étape S1 d'extraction d'images à partir d'un diagramme de structure biologique de référence d'une structure de support, pour obtenir une texture de grille multicouche servant de pluralité de diagrammes de couche pour une structure de support interne d'un modèle tridimensionnel; étape S2 de séparation de structures multicouches de la couche de modèle tridimensionnel par couche, et réalisation d'un traitement de binarisation et d'évidement sur chaque couche pour obtenir une pluralité d'images; étape S3 de fusion de chaque diagramme de couche obtenu à l'étape S1 avec une image correspondante obtenue à l'étape S2, pour obtenir une pluralité de structures de couche de tranche finales; étape S4 de détermination d'une région de support de la structure de support dans chaque couche de tranche en fonction des exigences de résistance du modèle tridimensionnel; étape S5 d'analyse du modèle tridimensionnel pour réaliser une conception structurelle adaptative et d'ajustement d'un rapport force-matière; et étape S6 de restauration du modèle tridimensionnel à l'aide d'un algorithme de reconstruction tridimensionnelle et d'impression du modèle tridimensionnel.
(ZH)
一种基于自适应内部支撑结构的3D打印方法,包括下述步骤:S1:将支撑结构的基准生物结构图进行图像提取,得到多层网格纹路,作为三维模型内部支撑结构的多个层图;S2:将三维模型逐层分离出多层结构,每一层进行二值化与掏空处理得到多张图片;S3:将步骤S1中得到的每个层图与步骤S2中得到的相应图片进行融合,得到多个最终的切片层结构;S4:根据三维模型强度需求,确定每个切片层中支撑结构的支撑面积;S5:对三维模型分析进行自适应结构设计,并调整强度材料比;S6:通过三维重建算法还原回三维模型并进行打印。
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