期刊文献+

激光金属沉积成形的扫描方式 预览 被引量:9

SCANNING MODE FOR LASER METAL DEPOSITION SHAPING
在线阅读 下载PDF
收藏 分享 导出
摘要 扫描方式是激光金属沉积成形(Laser metal deposition shaping,LMDS)制造过程中的关键技术,在分析现有扫描方式及其对成形质量和成形效率影响的基础上,指出现有扫描方式的缺陷,并提出一种基于层面轮廓优化单调区分解的分区平行扫描方式.该方式基于极值顶点可见性原理,对分层后的断面轮廓进行去除内环、非单调多边形的单调剖分等处理,可最大限度地减少分区数量,获得若干个单调子区域.针对各单调子区域采用适应性变间距平行路径填充,可减小扫描线的长度,并保证均匀致密性填充.试验表明这种扫描方式能够提高成形效率和成形质量. The scanning mode is a key technology in the laser metal deposition shaping (LMDS) fabrication process. On the basis of analysis of the existing scanning mode and its influence on the fabrication efficiency and quality of the parts, some disadvantages of the existing scanning mode are pointed out. A kind of subarea-parallel scanning mode for LMDS basic on subdividing profiled outline into monotonous polygon subareas is presented. On the basis of the principle of extreme point visibility, inner loops are eliminated, and simple polygons are subdivided into monotonous polygons with the minimal zones. Parallel scanning paths with adaptive scan space of all monotonous polygon subareas are finished, which diminishes the length of scanning line, and ensures uniform and compact filling scan. Practical application shows that the scanning mode can enhance the fabrication efficiency and quality.
作者 卞宏友 刘伟军 王天然 尚晓峰 张凯 BIAN Hongyou,LIU Weijun, WANG Tianran, SHANG Xiaofeng,ZHANG Kai(1. Laboratory of Advanced Manufacture Technology, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016; 2. Graduate University, Chinese Academy of Sciences, Beijing 100039)
出处 《机械工程学报》 EI CAS CSCD 北大核心 2006年第10期 170-175,共6页 Journal of Mechanical Engineering
基金 国家863高科技(2001AA421160)和辽宁省自然科学基金(L050210)资助项目.
关键词 激光金属沉积成形 顶点可见性 单调区 分区平行扫描 Laser metal deposition shaping, Point visibility,Monotonous polygon ,Subarea-parallel scan
作者简介 卞宏友,男,1975年出生,博士研究生.研究方向为快速成形制造系统和计算机图形学.E-mail:bhy@sia.cn
  • 相关文献

参考文献8

二级参考文献12

共引文献86

同被引文献91

引证文献9

二级引证文献86

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈
新型冠状病毒肺炎防控与诊疗专栏