逆向工程椭圆柱构件的拟合计算

FITTING CALCULATION OF ELLIPTICAL CYLINDER COMPONENT IN REVERSE ENGINEERING

提出一种基于逆向工程原理的拟合椭圆柱构件的方法:使用电子全站仪采集椭圆柱形工业构件表面的离散点坐标,通过拟合椭圆柱底面获取法向量,从而进行坐标转换,将空间任意位置的椭圆柱转换为标准形式,将椭圆柱的拟合问题转换为椭圆的拟合问题。并用工程实例证明了该方法的可行性。

A method based on the principle of reverse engineering for fitting the elliptical cylinder component is proposed. At first, the data on the face of elliptical cylinder component is sampled by electronic total-station, then, the normal vector is gotten by fitting the bottom surface. At last, arbitrary elliptical cylinder is transformed to the standard form by the coordinate transformation. In the way, the elliptical cylinder fitting transforms to the ellipse fitting. At the end, an engineering example is shown to prove the feasibility of this method.