According to the intermeshing mechanisms of co and counter rotating twin screws,the 3D solid modeling of twin screw was realized by using Mechanical Desktop(MDT) of AUTODESK in this paper.

• 本文根据双螺杆横截面几何造型方程，运用MDT软件包，实现了同向和异向旋转双螺杆的三维实体造型。