Algorithm of Filling Region Generation Based on Implicit Surface in Complex Surface

Xu, Jingxian; Chen, Yangfan; Yuan, Hao; Gu, Hengzhi; Xu, Zelin; Han, Yi

doi:10.1145/3469213.3470684

Cited by 1 publication

(2 citation statements)

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“…The 3D manufacturing is changed into manufacturing layer by layer in the two-dimensional (2D) plane, which simplifies the manufacturing process. The accuracy and quality of the layer contour position information obtained by slicing ultimately affect the accuracy and quality of AM products [17,18]. AM slicing technology mainly includes a slicing algorithm based on a Standard Template Library (STL) model and a direct slicing algorithm based on a CAD model [19,20].…”

Section: Slicing Algorithmmentioning

confidence: 99%

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An Additive Manufacturing Direct Slicing Algorithm Based on a STEP Model

et al. 2022

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The Standard Template Library (STL) file is the most common data format for the description of an additive manufacturing (AM) geometric model, but it has some disadvantages, such as large errors of the geometric model description, the easy loss of topology information, data duplication, large file sizes, and so on. Aiming at these problems, a direct slicing algorithm based on a Standard for the Exchange of Product Model Data (STEP) model was proposed. For the parts composed of basic types of surfaces such as boundary curves, spherical surfaces and cylindrical surfaces, the traditional geometric method was used to calculate the intersection. For the parts with complex surfaces, the three-dimensional models were described based on Non-Uniform Rational B-Spline (NURBS) surfaces. The NURBS surfaces were layered using a discrete tracking algorithm, the tracking starting point was determined, the intersection line between the tangent plane and each NURBS sub-surface was obtained, and the closed layer contour was formed. Finally, the slicing simulations and printing experiments of solid parts were carried out using the direct slicing algorithm based on the STEP model. It was shown that the dimensional accuracy and surface quality of the printed parts from this algorithm had been significantly improved.

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