Quick generation method of three-dimensional printing slice contour of triply periodic minimal surface

A technology of extremely small curved surface and three-dimensional printing, which is applied in manufacturing auxiliary devices, processing data acquisition/processing, additive processing, etc., can solve the problems of low slicing efficiency, large memory consumption, etc., achieve efficient generation, stable and reliable methods, and save Effect of processing time and memory consumption

Active Publication Date: 2018-07-27
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of low efficiency and large memory consumption of the existing three-period minimal curved surface 3D printi...

Method used

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  • Quick generation method of three-dimensional printing slice contour of triply periodic minimal surface
  • Quick generation method of three-dimensional printing slice contour of triply periodic minimal surface
  • Quick generation method of three-dimensional printing slice contour of triply periodic minimal surface

Examples

Experimental program
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Effect test

Embodiment

[0063] Typical implementation examples of the present invention are as follows:

[0064] Input the three-period minimal surface P surface function expression to be sliced ​​as f(x,y,z)=cos(0.25πx)+cos(0.25πy)+cos(0.25πz)=0, x∈[0,8 ], y∈[0,8], z∈[0,8], slice thickness h=0.2mm, set different grid resolutions n to get different numbers of slice line segments, and get slice contours with different precision after sorting the slice line segments , to generate a slice CLI file and save it.

[0065] Test the slicing time difference between the fast slicing method and the traditional slicing method on a computer with an Intel Xeon CPU@3.40GHz and 8GB of memory. Such as Figure 4 As shown, fast slicing is obviously more efficient than the traditional method of first generating a three-period minimal surface STL model and then slicing, and it also saves the memory consumption of saving STL files.

[0066] In addition, in terms of slice line sorting, as shown in Figure 5(a), the quick...

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Abstract

The invention discloses a quick generation method of a three-dimensional printing slice contour of a triply periodic minimal surface. The method comprises the steps of inputting an expression of the triply periodic minimal surface to be sliced, slice thickness and a slice quadrilateral mesh resolution, generating slice quadrilateral meshes of an area corresponding to the surface according to a co-ordinate distribution range of the triply periodic minimal surface and the slice thickness, calculating slice line segments of the surface and each slice quadrilateral mesh by linear interpolation according to the expression of the surface, storing a topological relationship between the slice line segments and quadrangles in the corresponding slice quadrilateral meshes, sorting all the slice linesegments, and at last, outputting the slice contour generated after sorting in a CLI (common layer interface) file format for storage. The method achieves quick slicing of the triply periodic minimalsurface and quick sorting of scattered slice line segments by using the slice quadrilateral meshes, quickly generates the three-dimensional printing slice contour, and avoids the disadvantages of consumption of much time and a large memory space due to generation of an STL (standard template library) model in the traditional method.

Description

technical field [0001] The present invention relates to the technical field of three-dimensional printing computer aided manufacturing (Computer aided manufacturing, CAM), in particular to a method for rapidly generating a three-period minimal curved surface three-dimensional printing slice outline. Background technique [0002] 3D printing technology is an advanced manufacturing technology based on layer stacking, also known as rapid prototyping technology or additive manufacturing technology. Different from traditional machining and other methods that continuously cut materials to obtain the design shape, 3D printing technology uses various materials and superimposes the design model with the help of computer-aided equipment, which is especially suitable for rapid manufacturing of complex structures. 3D printing slice contour generation is a key link that affects the final accuracy and efficiency of manufacturing. [0003] In order to find an ideal balance between precisi...

Claims

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Application Information

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IPC IPC(8): B29C64/386B33Y50/00
CPCB29C64/386B33Y50/00
Inventor 傅建中冯嘉炜林志伟商策
Owner ZHEJIANG UNIV
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