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A 3D printing filling path generation method based on association tree

A technology of 3D printing and path generation, applied in instrumentation, design optimization/simulation, calculation, etc., can solve problems such as frequent switching of nozzles, reducing molding efficiency, increasing filling time, etc., to improve filling quality, improve molding efficiency, and versatility Good results

Active Publication Date: 2021-04-06
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The empty path will not only increase the filling time and reduce the molding efficiency, but also cause frequent switching of the nozzle and shorten the life of the nozzle

Method used

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  • A 3D printing filling path generation method based on association tree
  • A 3D printing filling path generation method based on association tree
  • A 3D printing filling path generation method based on association tree

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Experimental program
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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the following embodiments do not constitute a limitation to the present invention.

[0051] figure 1 Shown is a flow chart of the general internal filling path generation method of the 3D printing technology of the present invention. to attach figure 2 Take the part section in figure 2 parts shown.

[0052] Step 1. Determine the forming orientation of the parts to be processed according to the requirements of precision and formability, such as figure 2 As shown in (a), the layer thickness is uniformly set to 0.2mm, and the geometric contour information of each layer is obtained by using the slicing software. figure 2 (b) is one of the cross-sectional profiles, including an outer profile C out and two inner contours C in1 and C in2 ;

[0053] Step 2. Set the path spacing w as 0.5mm, iteratively offset the outer contour of the ply i...

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PUM

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Abstract

A method for generating a filling path for 3D printing based on an association tree, including obtaining a slice file, each layer having an outer contour and at least one inner contour; setting the path spacing, iteratively biasing the outer contour toward the inside, and iterating the inner contour toward the outside Offset, until the number of offset polygons is 0, get the set of offset polygons; group the offset polygons according to the parent-child relationship contained and included, and each set of offset polygons corresponds to a sub-region; Construct a relationship tree based on the adjacency relationship; generate their own closed filling paths in each sub-region; connect the closed filling paths of the sub-regions with parent-child relationship according to the relationship tree, and generate the closed filling paths in the current topologically connected region. The invention has the advantages of not only being able to use various cross-sectional shapes, but also reducing the number of empty paths in the filling path of 3D printing or realizing no empty paths.

Description

technical field [0001] The invention relates to the field of 3D printing technology path generation methods, in particular to a 3D printing filling path generation method based on an association tree. Background technique [0002] 3D printing technology is based on the principle of discrete accumulation, driven by the three-dimensional data of the model, and adopts the technical method of directly processing solid parts by layer-by-layer accumulation, realizing the transformation from equal material manufacturing and subtractive manufacturing to additive manufacturing, thus completely Changed the concept and mode of traditional manufacturing. Since 3D printing technology can be formed at one time without additional mechanical processing, it can shorten the processing time of products to a certain extent, thereby improving production efficiency and reducing production costs. It has been widely used in many fields. At the same time, 3D printing technology can be perfectly com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/18G06F113/10
CPCG06F30/20G06F2119/18
Inventor 方志超郭佳梅陈家琦金育安张明华王骥
Owner NINGBO UNIV
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