A system and method for generating a three-dimensional printing support

Abstract

The invention discloses a production system and a production method of a three-dimensional printing support. The production method comprises the following steps: obtaining a three-dimensional network model of a printed object; obtaining support parameter values of nodes on the three-dimensional network model according to the order of node heights on the three-dimensional network model from bottom to top; obtaining the printability of the nodes according to the preset critical parameter value and support parameter values; and obtaining a support base point according to nonprintable nodes, and generating a support rod as the three-dimensional printing support of the nonprintable nodes by employing the nonprintable nodes and the support base point as endpoints. According to the production system and the production method, the support parameter values are set for the nodes on the three-dimensional network model to be used for measuring the support stability of the nodes; the printability of a three-dimensional printing system can be accurately obtained; the consumption of three-dimensional printing materials is reduced by providing the printing support under the premise of the printability; the three-dimensional printing cost is reduced; and the damages to the printed object, caused by the printing support, are relatively slight.

Description

technical field [0001] The invention relates to the technical field of three-dimensional printing, in particular to a system and method for generating a three-dimensional printing support. Background technique [0002] Three-dimensional printing is a kind of rapid prototyping technology. It is based on digital model files and uses liquid, powder or sheet metal, plastic and other materials to construct objects by printing layer by layer from bottom to top. Technology. [0003] 3D printing is usually realized by using digital technology material printers. It is often used to manufacture models in the fields of mold manufacturing and industrial design. Later, it is gradually used in the direct manufacture of some products. Currently, it has been printed using this 3D printing technology. parts. 3D printing technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries,...

AI Technical Summary

Problems solved by technology

[0005] In the actual printing process, for 3D object models with suspended parts, such as figure 1 The object model of Ma Tafeiyan is shown. Due to the problem of material viscosity, the existing 3D printing method cannot normally support and print the entire model, that is, it cannot be printed; therefore, it is necessary to add additional support to the 3D object model to Guaranteed printability

In the process of generating support pairs for 3D printing, it is common practice to fill a pre-defined regular pattern under the printed object for support. figure 2 Shown is a schematic diagram of the structure of the generated printing support, therefore, in the process of generating the printing support to achieve the printability of the object, the waste of printing materials is large and the printing cost is high

The printability of the object is realized by generating printing supports. After the printing is completed, these additional printing supports need to be stripped from the object model to obtain the original model, and the object model will be damaged at the support nodes when stripping these extra supports. Existing In the process of generating printing support in the technology, the damage to the object model is difficult to predict when the printing support is peeled off, which greatly reduces the printing quality

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