Abstract

In rapid prototyping, the support can constraint the parts deformation, and avoid a lot of problems such as collapse, shift and imbalance of the parts. The support automatic generation algorithm has become the key research of rapid prototyping technics software; however, presently the support automatic generation algorithm is complex with low efficiency. Thus, it is of great importance in improving the overall efficiency of rapid prototyping technics software through enhancing the support generation efficiency. 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. Thus, 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 (SLA) and Selective Laser Melting (SLM) of HRPS Series. Practical application indicates that the new support generation algorithm improve considerably the support technics efficiency and rapid prototyping efficiency of the technics software.

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