光固化快速成型中悬挂结构生成算法研究  

The Algorithm of Suspension Structure in Stereolithography

作　　者：李占利[1] 王亚芳[1] 岳国华[1] 李洪安[1] 张蕴[1] LI Zhanli;WANG Yafang;YUE Guohua;LI Hongan;ZHANG Yun(College of Computer Science and Technology, Xi’an University of Science and Technology, Xi’an Shaanxi 710054, China)

机构地区：[1]西安科技大学计算机科学与技术学院,陕西西安710054

出　　处：《图学学报》2017年第3期326-331,共6页Journal of Graphics

基　　金：陕西省教育厅科研计划项目(16JK1497);中国博士后科学基金项目(2016M602941XB);西安科技大学校级科研培育基金项目(201634)

摘　　要：为解决光固化快速成型技术中对零件添加悬挂结构的需求,提出一种自动生成悬挂结构的算法。首先识别提取实体模型的各类待悬挂区域;然后采用基于面积自适应的离散标识法,将拾取到的待悬挂面在加工方向的投影面离散成栅格;最后根据悬挂结构应力载荷情况均匀采样,获得待悬挂生成点,并设计相应的悬挂结构。最终在Visual studio 2013开发平台上结合VTK实现对零件自动添加悬挂。实验结果证明该算法生成悬挂结构的正确性和可行性,且已在实际加工中得到成功应用。In order to solve the requirement of adding suspension structure for parts in Stereolithography,an algorithm of automatic generation of suspension structure is proposed.Firstly,identified and extracted various suspension region of the entity model.Then,the projection plane in the direction of the processing is discretized into a grid by using the discrete identification method based on the area.At last,according to the suspension structure stress load condition,uniform sampling is used to obtain the points and the corresponding suspension structure is designed.Finally in the Visual studio2013development platform combined with VTK to achieve it.The experimental results show that the algorithm is correct and feasible,and it has been successfully used in practical machining.

关 键 词：光固化快速成型 悬挂结构 离散标识法 应力 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]