阅读说明：本技术 基于自适应内部支撑结构的3d打印方法 (3D printing method based on self-adaptive internal supporting structure ) 是由 毋立芳 赵立东 毛羽忻 杨天勤 简萌 相叶 石戈 于 2018-12-29 设计创作，主要内容包括：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。(A3D printing method based on an adaptive internal support structure comprises the following steps: s1: carrying out image extraction on the reference biological structure diagram of the supporting structure to obtain multi-layer grid lines serving as a plurality of layer diagrams of the internal supporting structure of the three-dimensional model; s2: separating the three-dimensional model into a multi-layer structure layer by layer, and carrying out binarization and hollowing processing on each layer to obtain a plurality of pictures; s3: fusing each layer image obtained in the step S1 with the corresponding image obtained in the step S2 to obtain a plurality of final slice layer structures; s4: determining the support area of the support structure in each sliced layer according to the strength requirement of the three-dimensional model; s5: carrying out self-adaptive structural design on the three-dimensional model analysis, and adjusting the ratio of strength materials; s6: and restoring the three-dimensional model through a three-dimensional reconstruction algorithm and printing.)

A3D printing method based on an adaptive internal support structure comprises the following steps:

s1: carrying out image extraction on the reference biological structure diagram of the supporting structure to obtain multi-layer grid lines serving as a plurality of layer diagrams of the internal supporting structure of the three-dimensional model;

s2: separating the three-dimensional model into a multi-layer structure layer by layer, and carrying out binarization and hollowing processing on each layer to obtain a plurality of pictures;

s3: fusing each layer image obtained in the step S1 with the corresponding image obtained in the step S2 to obtain a plurality of final slice layer structures;

s4: determining the support area of the support structure in each sliced layer according to the strength requirement of the three-dimensional model;

s5: carrying out self-adaptive structural design on the three-dimensional model analysis, and adjusting the ratio of strength materials;

s6: and restoring the three-dimensional model through a three-dimensional reconstruction algorithm and printing.

The 3D printing method of claim 1, wherein for an animal model, the support structure is constructed based on connective tissue between muscle fibers.

The 3D printing method as claimed in claim 2, wherein the continuous connective tissue region obtained by the watershed method is segmented as the support region in step S1.

The 3D printing method as claimed in claim 3, wherein in step S1, for each layer map, a support area is determined in a block cut out therefrom, and the support area in the block is turned over to be expanded to determine a support area in an enlarged block.

The 3D printing method as defined in any one of claims 1 to 4, wherein in step S4, in the case that the supporting area in each sliced layer is larger than the sliced layer area, the sliced layer is expanded in size using a pixel-by-pixel expansion method.

The 3D printing method as defined in any one of claims 1 to 5, wherein in step S4, in the case that the support area in each sliced layer is smaller than the sliced layer area, the support area is reduced by a pixel-by-pixel point etching method.