圆弧样条逼近为机械零件几何轮廓的自动编程

CIRCULAR ARC SPLINE APPROXIMATION FOR AUTO PROGRAMMING PROFILES OF MACHINE PARTS

在对直线、圆弧、曲线和切线赋予方向后，给出圆弧样条逼近平面参数曲线和平面列表点曲线。这个方法克服了大挠度高精度及巨量编程的困难，特别避免求解可能不收敛的非线性方程组。描述一个核心程序用于数控加工中机械零件几何轮廓的自动编程。

The circular arc spline approximation is given for fitting the plane parametric curves and fitting the plane point set curves after the straight line and the circular arc and the parametric curve and its tangent line are bestowed with direction.This method overcome difficulties of big torsion and of high precision and of huge programming.Especially,there is not obstruction during fitting curves because avoiding to solve nonlinear equations that own possibility of no convergence.The core of a program is described for auto programming the profiles of machine parts in numerical control machining.