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A Method for Generation of Three-Period Minimalist Curved Surfaces with Equal Wall Thickness Layered Filling Regions

A technique of layered filling with extremely small surfaces, applied in the directions of instrumentation, computing, and 3D image processing, etc., can solve problems such as many defects and complex generation process of layered filling areas, and achieve time-consuming, accurate and reliable layered filling areas , The method is accurate, stable and reliable

Active Publication Date: 2020-07-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the generation process of the layered filling area of ​​the existing three-period minimal curved surface is complex and has many defects, the present invention provides a method for generating the layered filling area of ​​the three-period minimal curved surface with equal wall thickness

Method used

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  • A Method for Generation of Three-Period Minimalist Curved Surfaces with Equal Wall Thickness Layered Filling Regions
  • A Method for Generation of Three-Period Minimalist Curved Surfaces with Equal Wall Thickness Layered Filling Regions
  • A Method for Generation of Three-Period Minimalist Curved Surfaces with Equal Wall Thickness Layered Filling Regions

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Select the three-period minimal surface P surface, the surface slice profile includes two slice profiles of closed profile and open profile, slice thickness h=0.1mm, input the P surface slice profile as Figure 5 As shown, among them, Figure 5 (a) is the left view of the P surface slice profile, Figure 5 (b) is a three-dimensional view of the slice profile of the P surface, and the offset solid wall thickness is set to d=0.5mm.

[0060] Figure 6 The generation results of the layered filling area with equal wall thickness on the P surface of Example 1 are shown. It can be clearly seen that this method can be compatible with closed contours and open contours, and can generate reliable and accurate layered filling areas.

Embodiment 2

[0062] Select the three-period minimal surface G surface, the surface slice profile only contains the open profile, slice thickness h = 0.1mm, input the G surface slice profile as Figure 7 As shown, among them, Figure 7 (a) is the left view of the G surface slice profile, Figure 7 (b) is a three-dimensional view of the contour of the G curved surface slice, and the offset solid wall thickness is set to d=0.5mm.

[0063] Figure 8 It shows the generation result of the layered filling area with equal wall thickness on the G curved surface in Example 2. The inventive method is used to quickly generate the layered filling area with complex topological structure, and the output result is saved as a CLI file for 3D printing equipment manufacturing. The three-period minimum of equal wall thickness Curved surface structure, the whole process is fast and reliable, avoiding the shortcomings of traditional methods based on three-dimensional space offset.

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Abstract

The invention discloses a method used for generating an iso-wall thickness layered filling area of a three-period minimal surface. The method comprises the steps that a three-period minimal surface layered slice contour is input, wherein the slice thickness is h and the double-sided offset solid wall thickness is d; an influence layer which influences each target slice layer is found, and the offset distance thereof is calculated; the slice contour of each target slice layer is bidirectionally offset to form a first offset closed area, and the slice contour of the influence layer correspondingto each target slice layer is bidirectionally offset to form a second offset closed area; after the second offset closed area of the influence layer is projected to the corresponding target slice layer, the union set of the projected second offset closed area and the first offset closed area of the target slice layer is acquired, and the union set is used as the iso-wall thickness layered fillingarea of the target slice layer; and the iso-wall thickness layered filling areas of all slice layers are saved as a CLI file for output. The method has a stable and reliable process, and avoids the disadvantage of three-dimensional space mesh surface offset.

Description

technical field [0001] The invention relates to the field of three-dimensional printing computer-aided manufacturing, in particular to a method for generating a three-period minimum curved surface equal-wall-thickness layered filling area. Background technique [0002] 3D printing is an intelligent manufacturing technology that integrates advanced materials, computer-aided design, and numerical control technology. Three-dimensional parts of any shape using computer-aided design can be manufactured using the principles of layering and additive materials. Compared with traditional machine tool cutting manufacturing, 3D printing technology is flexible and reliable, and can greatly reduce product development costs while rapidly manufacturing complex structural parts. According to different materials or molding principles, 3D printing has many subdivided technical processes, but the process basically includes three steps: 3D model slicing, layered filling area generation and fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T15/20G06T15/08B29C64/393B33Y50/02
CPCB33Y50/02G06T15/08G06T15/205G06T17/00
Inventor 傅建中冯嘉炜林志伟商策
Owner ZHEJIANG UNIV
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