摘要
针对AutoCAD中不能直接利用已有的命令建立圆柱螺旋弹簧实体的问题,通过对AutoCAD系统三维建模过程的分析及对圆柱螺旋弹簧实体特征结构的研究,提出了以"投影法"为基础的参数化实体建模型方法。利用"投影法"编写三维实体参数化建模程序,可以实现用交互式方式建模的全部过程。使用此方法生成的圆柱螺旋压缩弹簧实体可包含收尾圈及磨平结构。由于用该方法生成实体的精度可任意设置,生成的机械零件三维实体能够满足机构的仿真装配及使用有限元方法对零件进行应力分析。使用AutoLisp语言编写的圆柱螺旋弹簧三维参数化建模程序已在AutoCAD2000环境下运行通过。为实现复杂实体的参数化建模及建立机械标准零件与常用零件参数化三维实体图形库提供了一种有效方法。
The entity of column helix springs can not based with orders existed in AutoCAD. Depending on the analyses in course of the three dimension modeling and the character structural of column helix springs in AutoCAD, a method of the modeling by parameter based 'projection' was given. A programme basing on the method can come true the whole course of alternation modeling. The column helix compress springs contains the ending ring and rubdown structure. Because its precision can be intercalated at discretion, the three dimension noumenon may imitate assemble and the stress can be analyzed with finite element for parts. The AutoLisp programme is already approved with in AutoCAD2000, and it provide an effective method to modeling for complex noumenon by parameter and may constitute a parameter graph storeroom of mechanical normal parts and familiar parts.
出处
《抚顺石油学院学报》
2003年第3期57-59,64,共4页
Journal of Fushun Petroleum Institute
