Support fast generation algorithm based on discrete-marking in stereolithgraphy rapid prototyping.

Purpose – In stereolithgraphy rapid prototyping, the support can constrain the model deformation and avoid a lot of problems such as collapse, shift, and imbalance of the model. The support automatic generation algorithm has become the key research of rapid prototyping technics software; however, presently the efficiency of support automatic generation algorithm is low, and its algorithm is complex. Thus, it is of great importance in improving the overall efficiency of rapid prototyping technics software through enhancing the support generation efficiency. This paper aims to address these issues. Design/methodology/approach – Based on this, this paper proposes a discrete-marking support algorithm for treatment of processing on manufactured part model of all triangle-based discrete-marking on the support plane, which realizes the three-dimensional computation of intersection for each line associated with the triangle automatically, and avoid invalid computation between all the support lines and other triangles. Findings – The algorithm efficiency has reached O(n). Meanwhile, the technics support generation speed has been improved. Furthermore, the new mesh discrete-marking and automatic support generation algorithm has been successfully applied to the sterolithography apparatus and selective laser melting of HRPS series. Practical implications – Practical application indicates that the new support generation algorithm based on discrete-marking considerably improves the support technics efficiency and stereolithgraphy rapid prototyping efficiency of the technics software. Originality/value – The research presents a Noval support fast generation algorithm based on discrete-marking in stereolithgraphy rapid prototyping. [ABSTRACT FROM AUTHOR]