3D (3-Dimensional) printing method

Abstract

The invention discloses 3D (3-Dimensional) printing method. The 3D printing method comprises the following steps: modeling a model needed to be printed in a computer through professional three-dimensional software; amending the modeling of a small structure according to the dimensions of the model needed to be printed, and amending column bodies with circular cross sections with the diameters of smaller than or equal to 0.8 mm and greater than or equal to 0.4 mm into equal-height column bodies with square cross sections with equal side length; guiding the model in specific digital slicing printing software, and generating N Z-axis cross sections for the model; depositing raw materials on the cross sections of model data through an FDM (Frequency Division Multiplexing) printer carrier, wherein one raw material layer is deposited on each cross section layer, and depositing the cross section material layers layer by layer upwards along the Z axis from the base layer in sequence. The 3D printing method has the characteristics that minimum circular shapes or circular shapes with equal diameter that the printing forming precision is nearly 0.4 mm, 0.6 mm and 0.8 mm can be obtained in a traditional printing method; while the printing efficiency is guaranteed, high structural strength of the printed model can be guaranteed, and the model is unlikely to be damaged and deformed.

Description

technical field [0001] The invention relates to the technical field of 3D printing. Background technique [0002] 3D printing (3D printing), which is a kind of rapid prototyping technology, is based on digital model files, relying on cross-sectional slice calculations, using powdered metal or plastic and other bondable materials, through heat treatment of raw materials, The technology of making raw materials slice and melt according to the designed three-dimensional model cross-section to construct objects. However, in the existing FDM technology, when the accuracy is at the minimum / near minimum printing wall thickness and size, printing accuracy is an inevitable problem, which leads to the possibility of shrinkage and deformation of the final 3D model when printing a small model, which affects 3D model quality and appearance. [0003] At present, the minimum printing size of FDM desktop printers is 0.4mm, and the most standard size is 2mm. However, some model structure r...

AI Technical Summary

Problems solved by technology

However, some model structure requirements will have higher requirements on the basis of 0.4mm, and the accuracy error of existing desktop printers is ±0.2mm based on the minimum wall thickness of 0.4mm, unless the forming wall thickness is above 0.8mm. Reach the accuracy requirement of ±0.1mm

This leads to problems such as deformation of the details of the formed wall thickness of 0.4mm to 0.8mm

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