一种面向3D打印技术的STL模型快速分层算法

A Fast Slicing Algorithm of STL Model for 3D Printing

三维模型的分层是3D打印领域的关键技术之一,其效率直接影响数据处理速度。提出一种STL模型快速分层算法:首先确定STL模型中与各分层平面相交的三角形,并据此建立分层面与边的结构数组;然后对边数组中的三角形信息进行识别与剔除,并根据相邻层间三角形邻接关系的继承性进行拓扑重建,获得有序边数组;最后通过有序交点系列生成二维封闭轮廓。仿真实验证明了该分层算法的可靠性。

3D model slicing is one of key technologies in the field of 3D printing, and its efficiency directly affects the data processing rate. A fast slicing algorithm for STL model was proposed. Firstly, the triangle that intersected the layered plane in the STL model was determined, based on which the structure arrays of slicing plane and laterals were built. Then the triangle information in the lateral array was identified and eliminated, and based on the inheritance of adjacent interlayer triangles, topology reconstruction was carried out, and therefore the ordered lateral array was gained. Finally, the two-dimensional closed contour was generated by an ordered intersection series. The simulation results proveded the reliability of the layered algorithm.