带支承圈的立体弹簧计算机辅助设计的数学分析

The Mathematical Analysis of Computer-Aided Design for The Stereoscopic Spring with Strut Circle

实际的弹簧是立体的，且有粗度，特别是上下两个端面都有支承圈。该文讨论了有粗度且带支承圈立体弹簧的计算机辅助设计的方法。

The actural spring is stereoscopic,and crude .Specially there are a strut circle in each side .The article discusses the method with which how to draw the stereoscopic spring with crudeness and two strut circle.