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Self-adaptive scanning speed method for improving molding quality of hanging body model

A technology of scanning speed and molding quality, applied in the field of adaptive scanning speed to improve the molding quality of the pendant model, can solve the problems of increasing material consumption and cost, prolonging the molding time of the model, etc., to save consumption and improve the effect.

Active Publication Date: 2017-08-18
HOHAI UNIV CHANGZHOU
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Problems solved by technology

This not only increases material consumption and cost, but also prolongs the molding time of the model, and the desupporting process can negatively affect the surface quality of the model

Method used

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  • Self-adaptive scanning speed method for improving molding quality of hanging body model
  • Self-adaptive scanning speed method for improving molding quality of hanging body model
  • Self-adaptive scanning speed method for improving molding quality of hanging body model

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Experimental program
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Embodiment Construction

[0032] The present invention will be further explained below in conjunction with the drawings. The algorithm flow is as follows Figure 5 Shown.

[0033] An adaptive scanning speed method to improve the quality of the suspension model, such as Figure 1 to Figure 5 As shown, including the following steps:

[0034] Step A1: Establish the topological structure of the triangular facets in the STL model based on their vertices and normal vector information; the data structure describing the topological information is:

[0035]

[0036]

[0037] Step A2: Perform layered slicing processing on the STL model to obtain a closed two-dimensional polygon contour layer. Each two-dimensional contour is composed of a series of intersecting line segments. According to the data information of each line segment obtained, the formable dangling segment in each two-dimensional contour polygon is judged;

[0038] Step A21: Obtain the total number of slice layers n and all slice plane height values ​​Z of ...

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Abstract

The invention faces to the 3D printing field and discloses a self-adaptive scanning speed method. The self-adaptive scanning speed method of the invention comprises steps of establishing a topology structure according to normal vector information of an apex and a triangle face in an STL model to establish a topology structure, performing layered slicing processing on the STL model to obtain an enclosed two-dimensional polygonal contour and determining a moldable hanging section of each layer of the two-dimensional polygonal contour, solving scanning speed of the two-dimensional contour of this layer according to slice data of each layer, generating a universal Gcode file through a slicing engine for the 3D printer to read and print after obtaining scanning speeds of all layers. In order to improve modeling quality of the hanging body structure model and on the basis of the analysis on the affect on modeling quality by the scanning speed, the invention discloses he self-adaptive scanning speed method for improving molding quality of the hanging body model to ensure stable modeling of the mould, which not only improves printing effects and greatly saves consumption of printing materials.

Description

Technical field [0001] The invention belongs to the field of computer integrated manufacturing, and specifically relates to an adaptive scanning speed method for improving the molding quality of a suspension model. Background technique [0002] 3D printing technology is a comprehensive application technology, involving computer-aided design, mechanical control, industrial design and materials science and other disciplines. With the development and in-depth research of various disciplines, 3D printing technology has also obtained further breakthroughs. 3D printing belongs to additive manufacturing. It is mainly based on 3D digital models. The entity is manufactured by layer-by-layer accumulation of molding materials, and almost arbitrarily complex parts can be printed without molds and tools. Its high flexibility realizes a high degree of integration of product design and production, eliminates the mold opening process of the manufacture of complex structural parts, shortens the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20G06T17/30
CPCG06T17/20G06T17/30
Inventor 童晶张霞李天群
Owner HOHAI UNIV CHANGZHOU
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