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Slicing processing method aiming at non-closed STL model with boundaries

A processing method, non-closed technology, applied in electrical digital data processing, special data processing applications, instruments, etc.

Inactive Publication Date: 2015-02-04
上海极臻三维设计有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the existing slice processing algorithm restricts the input model to be a closed triangular mesh, the present invention provides a slice processing method for non-closed STL models with boundaries, which enables slice processing to generate non-closed STL models through boundary extraction. Closed two-dimensional polygon, and according to the molding characteristics of the non-closed STL model, the path optimization is made on the inner and outer contour lines of the two-dimensional polygon after offset processing to improve the molding efficiency

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  • Slicing processing method aiming at non-closed STL model with boundaries
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  • Slicing processing method aiming at non-closed STL model with boundaries

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Embodiment Construction

[0069] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0070] The present invention will be further described below in conjunction with the accompanying drawings.

[0071] Such as figure 1 As shown, a slice processing method for non-closed STL models with boundaries, including the following steps:

[0072] Step 1, input the STL model, extract the point, edge and surface information of the triangle in the STL model and establish the topological relationship among them, the data structure describing the topological information is as follows Figure 2(a) , 2(b) , 2(c) shows; the data structure composition of the point, edge and face of the topological relationship is respectively: the point data structure includes the point coordinate vertice and the index value faceIndexList of the face adjacent to the point; the face data structure includes the index value of the adjacent point index[0]...

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Abstract

The invention discloses a slicing processing method aiming at a non-closed STL model with boundaries for a 3D (three-dimensional) printer. The method comprises the following steps that point, edge and surface information of triangles in an STL model are extracted, and in addition, the topology relationship among the point, edge and surface information is built; all boundary edges are extracted according to the boundary edge judging rule; lamination slicing processing is carried out on non-closed lattices to obtain non-closed 2D polygons; printable inner and outer contour lines obtained after the deflection processing on the polygons are subjected to path optimization for reducing idle strokes; a slicing file is used for outputting universal Gcode files which are read and printed by the 3D printer. The invention provides the slicing method aiming at non-closed STL model input from the boundary extraction aspect for the first time, and breaks through the limitation that the traditional 3D printer can only carry out the slicing processing on the closed STL model, and the slicing processing on the non-closed STL model with the boundaries is realized, so that the non-closed STL model can be directly printed and formed.

Description

technical field [0001] The invention relates to the field of computer integrated manufacturing, in particular to a slice processing method for non-closed STL models with boundaries. Background technique [0002] 3D printing technology is a cutting-edge and leading emerging technology, especially suitable for small batch, personalized, complex structure and expensive raw material manufacturing. With the development of 3D printing technology, traditional production methods and production processes will undergo profound changes, and industries such as design, architecture, aerospace, medicine, and education will also be profoundly affected. "The Economist" magazine called 3D printing technology "an important symbol of the third industrial revolution" in 2012, and believed that it is an important opportunity to promote a new round of industrial revolution, which has attracted widespread attention from all over the world. [0003] Fused Deposition Modeling (Fused Deposition Mode...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 童晶巢海远张霞翟宇轩张伟林
Owner 上海极臻三维设计有限公司
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