摘要
研究了基于非均匀有理B样条(NURBS)的曲面拓展方法,结合多点成形设备的特点,开发了板料多点成形压边过渡面设计系统。实现了曲面柔性拓展和曲面桥接拓展两种不同的压边过渡面设计。这两种压边过渡面的设计算法效率高、适应性好,生成的过渡曲面与原曲面达到G2连续。
This paper presented two methods for NURBS surface extension, and combining with the characteristics of MPF, the blank holder blending surface system of Multi-Point Forming was designed. Two design methods of blending surface were proposed: 1) flexible surface extension; 2) surface bridge extension. These two algorithms are both effective and reliable, and the continuity of the blending surface designed by these methods can reach G2.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2005年第13期1217-1221,共5页
China Mechanical Engineering
基金
"十五"国家科技攻关项目(2001BA203B11)
国家863高技术研究发展计划资助项目(2003AA411210)
