A method of dealing polygon’s self-intersection contour in SLA  

作　　者：高永强 莫健华 董树槐 

机构地区：[1]State Key Lab of Mould Technology, Huazhong University of Science and Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2007年第2期163-165,共3页哈尔滨工业大学学报（英文版）

摘　　要：The contour of the slices of SLA parts is composed of a great deal of small lines. When offsetting the contour to compensate for the radius of laser spot, many self-intersection contours come into being, which decrease the precision of formed parts. A new lemma to judge the local self-intersection contour and the global self-intersection contour separately is put forward, according to which self-intersection contour can be removed reliably. Meanwhile, a new beam offsetting algorithm for SLA parts is described, which brings about good resuits in the practical manufacturing process.The contour of the slices of SLA parts is composed of a great deal of small lines. When offsetting the contour to compensate for the radius of laser spot, many self-intersection contours come into being, which decrease the precision of formed parts. A new lemma to judge the local self-intersection contour and the global self-intersection contour separately is put forward, according to which self-intersection contour can be removed reliably. Meanwhile, a new beam offsetting algorithm for SLA parts is described, which brings about good results in the practical manufacturing process.

关 键 词：SLA oolwon laser soot comoensation SELF-INTERSECTION 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] TN249[自动化与计算机技术—计算机科学与技术]