【摘要】 将工程图学中的圆弧投影原理应用于求圆锥面与斜螺旋面交线投影的参数方程 ,应用这一参数方程 ,在AutoCAD中利用其提供的二次开发工具VBA编程 ,只要给出几个相关的参数 ,即可绘出圆锥面和螺旋面、圆柱面和螺旋面交线的投影图及轴测图 .更多还原

【Abstract】 The parametric equation of a cone and an oblique helicoidal surface’s intersection projection can be deduced by the circular arc projection of engineering graphics. If a few parameters concerned are given,with this parametric equation and the help of other redevelopment tools such as VBA, the projection drawings and axonometric drawings of a cone and helicoids,a cylinder and helicoids.更多还原