基于ParaSolid的CAD系统中螺旋实体的建模

Modeling of Helical Bodies in CAD System Based on ParaSolid

螺旋弹簧及其它螺旋类实体的建模一直是CAD系统中的一个难题。该文基于Parasolid几何核心系统,给出了变节距圆柱螺旋弹簧创建的具体步骤及其他类型螺旋实体的创建方法,解决了通用CAD系统难以创建变节距弹簧实体的问题。该方法在造型设计中已得到了应用。

So far it is a difficult problem to model helical spring and other helical bodies.This paper presents the steps of creating variable pitch spring body and the algorithm of creating advanced helical body based on ParaSolid geometric kernel.The algorithm gets over the difficulty in modeling of variable pitch spring in current CAD system,and is applied to modeling design.