Three-dimensional printing method

A technology of 3D printing and support rods, which is applied in the field of 3D printing, can solve problems such as difficulty in adapting to printed objects, structures that cannot guarantee physical stability, and inflexible rule patterns, etc., and achieve the effect of reducing costs

Active Publication Date: 2014-02-12
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the inflexibility of the regular pattern, it is difficult to adapt to a variety of printed objects, so that a physically stable structure cannot be guaranteed

Method used

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Embodiment 3

[0031] The three-dimensional printing method of the embodiment of the present invention may also include:

[0032] A multi-objective three-dimensional printing model is established with the constraints of the printing environment and the physical characteristics of the printing material, and with the goal of minimizing the total volume of the support rods and the minimum number of the support rods.

[0033] Specifically, the printing environment may include the lower limit of the printing radius of the three-dimensional printer, and the physical properties of the printing material include tensile or compressive strength σ, shear strength τ, tensile elastic modulus γ, shear modulus μ, Ω Tensile buckling slenderness ratio α, the nodes include surface nodes and internal nodes, and the struts include surface struts and internal struts.

[0034] At this time, the physical characteristics of the printing environment and printing materials are used as constraints, which can include: ...

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Abstract

The invention discloses a three-dimensional printing method. The three-dimensional printing method comprises the steps of obtaining a three-dimensional grid model of a printed object, determining three-dimensional printing parameters of the printed object and printing according to the three-dimensional printing parameters, wherein the three-dimensional printing parameters comprise skin parameters and/or rigid frame parameters, the skin parameters comprises thickness and overall dimension of a skin layer; the rigid frame parameters comprises quantity, radius and length of a support rod and node positions; the nodes are connecting points among the support rods, and the rigid frame supports the skin layer. According to the three-dimensional printing method, the three-dimensional printing parameters comprise the skin parameters and/or the rigid frame parameters, and the rigid frame supports the skin layer, while the surface of the skin is printed, the rigid frame structure used as the support is embedded into an object, the printing material cost is reduced, and the printed object can meet the requirements on physical strength, stress stability, self balance and printability.

Description

technical field [0001] The invention relates to three-dimensional printing technology, in particular to a three-dimensional printing method. Background technique [0002] 3D printing, also known as additive manufacturing or additive modeling, is the process of manufacturing physical objects from digital models. During processing, the printed object is built by adding material layer by layer. [0003] Generally, the solid printing mode of 3D printing prints the volume of the entire object, which is a waste of material. Given the high cost of 3D printing, in order to reduce the amount of material used, the most straightforward approach is to uniformly hollow out the object and possibly fill it with a pre-defined regular pattern (such as a honeycomb structure) inside to increase strength. Parameters such as the thickness of the uniform void and the size and density of the regular pattern are specified empirically by the user. Due to the inflexibility of the regular pattern, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
Inventor 杨周旺刘利刚邓建松陈发来
Owner UNIV OF SCI & TECH OF CHINA
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