摘要
以NURBS样条曲面展开为理论基础,路径控制、布尔运算为基本方法,商用高级三维实体软件为工具,研究了变径弯头钣金放样及虚拟加工的问题。通过实体进行曲面重构,得到精确的弯头实体模型,通过模型的曲面径向和切向误差分析,验证了展开方法的正确性;利用CATIA V5二次开发功能结合Excel软件,构建出弯头钣金放样的虚拟仿真加工系统。
Taking the NURBS surface expanding as theoretical basis, the control of the path and the Boolean calculation as basic methods and commercial high-level 3D software as a tool, the problems of the adjustable elbow sheet metal lofting and virtual machining CNC cutting were studied. The accurate physical model of the elbow was acquired by means of solid body surface reconstruction. The correctness of the expansion method was verified through the analysis of the radial and tangential errors of the surface. Combining the secondary development function of CATIA V5 with Excel software, the virtual simulation machining system of the elbow sheet metal lofting was constructed.
出处
《湖南工业大学学报》
2013年第6期31-35,共5页
Journal of Hunan University of Technology
基金
湖南省自然科学基金资助项目(13JJ9014)
关键词
钣金放样
虚拟加工
误差分析
二次开发
sheet metal lofting
virtual machining
error analysis
secondary development
