3D (three-dimensional) printing adaptive slicing method capable of reserving model features

A 3D printing, self-adaptive technology, applied in the field of 3D printing, can solve the problems of increasing printing time, increasing the number of layers, and not being able to deal with the loss and offset of model features, so as to reduce the number of layers, reduce printing time, and reduce memory The effect of usage

Active Publication Date: 2015-06-17
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reducing the layer thickness in uniform layering will inevitably reduce the step error, but the number of layers will increase, which will inevitably lead to an increase in printing time; adaptive layering is p

Method used

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  • 3D (three-dimensional) printing adaptive slicing method capable of reserving model features
  • 3D (three-dimensional) printing adaptive slicing method capable of reserving model features
  • 3D (three-dimensional) printing adaptive slicing method capable of reserving model features

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Embodiment Construction

[0040] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041]A 3D printing adaptive slicing method that retains model features provided by the present invention, such as figure 1 with figure 2 As shown, the party specifically includes the following steps:

[0042] Step 1: According to the actual engineering design, use computer software to establish a three-dimensional model, and perform grid processing on the model to generate STL file data;

[0043] The STL file data includes three-dimensional coordinates of three vertices and unit normal vector data of all triangular faces generated after meshing.

[0044] Step 2: Preprocessing the STL file data of the model; specifically, the following steps are included:

[0045] 1) The user specifies the maximum and minimum layer thickness (l max = 10mm, l min =1mm) and the value of tip height c, such as c=0.8mm;

[0046] 2) Sorting and preprocessi...

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Abstract

The invention relates to a 3D (three-dimensional) printing adaptive slicing method capable of reserving model features, and belongs to the technical field of 3D printing. The method comprises the following steps: (1) according to an actual project design, establishing a 3D model, performing grid processing on the model, and generating STL (standard template library) file data; (2) performing preprocessing on the STL file data of the model; (3) processing the preprocessed file data by adopting an adaptive layer algorithm, and obtaining slice contour information; (4) judging whether the features possibly exist in slices at any two adjacent layer heights in the slice contour information or not by adopting a feature existence condition, if judging that the features possibly exist, performing secondary slicing on the model data of the slices by adopting the minimum layer thickness lmin, or otherwise, not performing processing, and recording the slice contour information; (5) generating a printing file in a slice format by the slice contour information processed in the step 4, and performing 3D printing. The method can effectively shorten printing time and reduce memory usage amount and calculated amount.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a 3D printing self-adaptive slicing method for retaining model features. Background technique [0002] 3D printing (3D Printing) is also called additive manufacturing (Additive Manufacturing, AM), this technology adopts the process principle of discrete accumulation, and uses the method of layer-by-layer printing to obtain a three-dimensional entity. Its basic principle is: in a certain direction (usually the Z-axis direction), use enough slices to cut the 3D model, then get all the contour information of the intersection of the slice and the model on each layer, and use the mutual inclusion of the contours The relationship determines the part to be printed, and then through the layer-by-layer accumulation and bonding of the printing materials, the three-dimensional entity to be printed is finally printed. At present, the most widely used 3D model in 3D printing is the model i...

Claims

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Application Information

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IPC IPC(8): B29C67/00B33Y50/00
Inventor 陈长波李文康杨文强
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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