基于数值放样法的构件展开系统

Component Deployment System Based on Numerical Sheeting Method

以圆柱三通管为例,对钣金构件展开图自动绘制进行了研究。首先介绍了构件展开图绘制的数值算法;然后通过数学建模得到构件的体表面交线和展平曲线方程;最后以ObjectARX为开发工具,利用参数化设计、坐标转换等技术在AutoCAD中开发了一个钣金构件展开绘图系统。系统绘图准确、使用方便,极大地提高了钣金构件展开下料的效率。

By an example of the three-way point of cylinder, this paper mainly studied the automatic drawing of developed view of sheet metal piece. Firstly, it introduced briefly the numerical algorithm of drawing component deployment graph. Then it got the body surface intersection equation and the faired curve equation of the component by mathematical modeling. Finally, a deployment system of sheet metal piece was built in AutoCAD, with the development tool of ObjectARX, by adopting para- metric design technology, coordinate transformation technology, et al. The system is accurate for drawing and easy to use, and it can greatly improve the efficiency of the unfolding and cutting of sheet metal piece.