摘要
针对端盖外形特征及逆向重构中误差的主要来源进行了分析,为了获取较为精确的端盖实体模型并提高多孔类零件的建模效率,采用正逆向混合建模技术完成端盖的模型重构。重构中对端盖边界及深孔位置运用二次正向设计的方法修正了端盖在逆向建模中的误差,通过对重构后点云模型的精度校验验证了该方法的有效性,并借由3D打印技术得到了端盖的实物模型。
This paper analyzes the shape characteristics of the end cap and the main source of error in reverse reconstruction.To obtain a more accurate end-face solid model and improve the modeling efficiency of the porous parts,the forward and reverse hybrid modeling technique is adopted in the modelling of the end cover.The errors of the end cover occurring in reverse modeling are corrected by using the method of secondary forward design for the end cover boundary and deep hole position in the reconstruction.The validity of the method is verified by the precision test of the reconstructionpoint cloud model,and the physical model of the end cover is obtained by 3D printing technology.
作者
李岩
赵旭东
孙志莹
LI Yan;ZHAO Xudong;SUN Zhiying(Department of Mechanical and Electrical Engineering,Jinzhou Normal college,Jinzhou 121001,China;School of Mechanical Engineering and Automation,Liaoning University of Technology,Jinzhou 121001,China;College of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)
出处
《机械制造与自动化》
2020年第3期60-62,共3页
Machine Building & Automation
基金
江苏科技大学博士科研启动基金资助项目。
关键词
发电机端盖
正/逆向混合建模
二次正向设计
逆向精度
快速原型制造
generator end cover
forward and reverse modeling
secondary forward design
reverse precision
rapid prototyping manufacturing
