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Sandwich plate fused deposition printing supporting structure generation method and system

A support structure and sandwich board technology, applied in the field of additive manufacturing, can solve the problems of less research on support design, no consideration of impact, and increased printing costs, so as to improve the redundancy of support points and make up for more supports.

Active Publication Date: 2022-04-05
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common support generation methods are mostly aimed at three-dimensional geometric structures, and there are few studies on the support design of sandwich planar structures, and the influence of the printing wire laying path on the distribution of support points is not considered, resulting in the support materials required to meet the shape accuracy requirements. Uses redundancy, increases printing costs

Method used

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  • Sandwich plate fused deposition printing supporting structure generation method and system
  • Sandwich plate fused deposition printing supporting structure generation method and system
  • Sandwich plate fused deposition printing supporting structure generation method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a method for generating a sandwich plate fused deposition printing support structure, including:

[0043] Obtain multiple sets of equidistant path profile information on the target part surface, and calculate the discrete curvature of the path profile;

[0044] Based on the corresponding relationship between the discrete curvature of the path profile and the maximum support distance, the discrete support points of the outermost path are obtained through segmental processing;

[0045] By shrinking the discrete support points of the outermost path to the inner path along the gradient direction, the set of support points of the entire target part surface is obtained;

[0046] According to the set of support points, the STL model of the support structure is generated by using the level set method.

[0047] Specifically, such as figure 1 As shown, it mainly includes four parts: target part preprocessing, searching for the outermost support point, s...

Embodiment 2

[0072] This embodiment provides a sandwich plate fused deposition printing support structure generation system, including:

[0073] The path profile discrete curvature calculation module is used to obtain multiple sets of equidistant path profile information on the surface of the target part, and calculate the path profile discrete curvature;

[0074] The discrete support point acquisition module is used to obtain the discrete support points of the outermost path through segment processing based on the corresponding relationship between the discrete curvature of the path profile and the maximum support distance;

[0075] The support point set acquisition module is used for shrinking the discrete support points of the outermost path to the inner path along the gradient direction to obtain the support point set of the entire target part board;

[0076] The support structure STL model generation module is used for generating the support structure STL model by using the level set ...

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Abstract

The invention discloses a sandwich plate fused deposition printing supporting structure generation method and system, and relates to the field of additive manufacturing, and the method comprises the steps: obtaining multiple groups of equidistant path contour information of a plate surface of a standard part, and calculating a path contour discrete curvature; on the basis of the corresponding relation between the path contour discrete curvature and the maximum supporting distance, discrete supporting points of the outermost path are obtained through segmentation processing; the discrete supporting points of the outermost path are shrunk towards the inner path in the gradient direction, and a supporting point set of the whole target part plate surface is obtained; and generating a support structure STL model by using a level set method according to the support point set. According to the invention, the supporting structure which uses fewer supporting materials and meets the requirement of higher shape precision can be obtained, so that the printing cost is reduced.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a method and system for generating a sandwich plate fused deposition printing support structure. Background technique [0002] The traditional sandwich panel manufacturing process has problems such as low production efficiency, complicated procedures, and serious waste of materials. The combination of 3D printing technology represented by fused deposition technology and the sandwich panel preparation process can manufacture sandwich panel structures with complex geometric shapes, and effectively improve Material utilization, so it gradually replaces traditional crafts. [0003] Sandwich panels prepared by fused deposition technology mostly use water-soluble materials as the printing materials of the support structure to facilitate the non-destructive removal of the support structure. Due to the high cost of water-soluble materials, the volume of the support structure should ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B29C64/386B29C64/40B33Y50/00
CPCY02P10/25
Inventor 刘继凯王一凡颜静静黄嘉奇
Owner SHANDONG UNIV
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