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Thin-shell 3D printing optimizing method

A 3D printing and optimization method technology, applied in the direction of additive processing, etc., can solve the problems of affecting the appearance shape, difficult to meet the use requirements, and inapplicable

Active Publication Date: 2016-02-10
HANGZHOU NORMAL UNIVERSITY
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method is not suitable for objects with thin shell structures.
Since the inner and outer surfaces of the thin-shelled object are visible, adding support will affect the appearance and shape, and it is difficult to meet the user's design requirements

Method used

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  • Thin-shell 3D printing optimizing method

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Embodiment Construction

[0071] like figure 1 As shown, a method for optimizing the thickness parameters of thin shell 3D printing includes the following three steps, 1. According to the geometric structure of the 3D mesh model that needs to be 3D printed, determine the maximum thickness that can be achieved at each vertex position; 2. According to The geometric structure of the model, slice the model to get the slice area, expand the intersection of the area boundaries to get the transition area, use a thickness parameter for each independent slice in the slice area, and for each vertex in the transition area Adopt a thickness parameter; 3. According to the use requirements that the model needs to meet, the external force and the materials used for printing, use specific finite element model simulation and sensitivity analysis technology, and use alternate iteration technology to optimize each grid model. The thickness a vertex needs to reach and generate a closed 3D model.

[0072] Below in conjunc...

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Abstract

The invention discloses a thin-shell 3D printing optimizing method. The thin-shell 3D printing optimizing method comprises the following three steps that firstly, the maximum thickness of each vertex position is determined; secondly, a model is segmented, intersections of zone boundaries are extended to obtain transition areas, a thickness parameter is adopted for each independent segment, and a thickness parameter is adopted for each vertex; and thirdly, according to needs, the thickness parameters are optimized, and an optimized three-dimensional model is obtained. Through the framework provided in the method, the 3D printable model which has enough structural strength and consumes few materials under specific usage scenarios can be worked out rapidly and automatically. The method is clear, the speed is high, and the result is robust. The method can be used for the fields of computer aided design, 3D printing model generation and the like.

Description

technical field [0001] The invention relates to the field of computer graphics and aided design, and the field of 3D printing technology, in particular to a method for obtaining a printable entity by optimizing thickness parameters of thin shell 3D printing. Background technique [0002] 3D printing (three-dimensional printing) is a common name for additive manufacturing technology (AM, additive Manufacturing). Through digital design models, powder materials (plastic or metal) are used, and three-dimensional entities are generated by superposition molding through hot-melt bonding technology. Intelligent digital technology plays an important role in the 3D printing process. With the help of computer implementation, the user's intention can be realized perfectly and a printable entity can be generated. With the continuous development of technology, 3D printers can use a variety of materials, including powder, material, metal, etc., as well as chocolate, human stem cells, etc....

Claims

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Application Information

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IPC IPC(8): B29C67/00B22F3/00B33Y10/00B22F10/80
Inventor 许威威赵海明金小刚周昆杨垠
Owner HANGZHOU NORMAL UNIVERSITY
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