A general algorithm for generating sectional drawing of square circle transition region is given By using C language and the interface of Auto CAD,the CAD/CAM for square circle transition region with straight axis are implemented.

• 给出了直轴方圆渐变段断面图及展开放样图的算法 ,并用C语言与AutoCAD的接口 ,实现了直轴方圆渐变段的计算机辅助设计 ,以及直轴方圆渐变段的钢板下料、焊接与安装的计算机辅助制造