光固化快速成形中柱形支撑生成算法的研究

The algorithm of pillar support generation for stereolithgraphy

提出了光固化快速成形中一种新的工艺支撑形式———柱形支撑及其自动生成算法 .其算法思想为 :在零件的包容立方体内确定支撑生成点的布点规则以后 ,对于零件的每个三角面片 ,求出与其相关布点射线的交点 ,再由这些交点在三维空间内直接生成柱形支撑的中心线段 ,而后生成STL格式的柱形支撑实体 .该算法生成柱形支撑的速度快 ,可实现实时模拟 ,快速观察生成效果 。

The algorithm of pillar support generation was introduced to realize pillar support automatically generated in STL format. The thought of the algorithm was introduced as follows: First define the rule of stationing pillar growing points in the cube of a part; then calculate each triangle intersections of the part and its correlated stationing rays; and finally generate the centerlines of pillar support by these intersections in 3D space. It was shown that the algorithm was fast in generating pillar support and realized the real time simulation of pillar support generation. The algorithm has been applied to the system of stereolithography.