摘要： 本文针对复杂曲线与曲面的CAM问题,系统地研究了NURBS方法及其特性,成功地将其应用于复杂轮廓及复杂模具的造型、拟合和数控编程中．根据数据机床的特点,将圆弧样条与NURBS方法有机结合起来,以确定刀心轨迹和数控加工程序,提出了解决过切现象的三种有效方法．在微机上开发了具有图形功能的自动编程软件．

关键词: 非均匀有理B样条, 圆弧样条, 曲线与曲面拟合, 数控加工

Abstract: To solve the technical problems in the CAM of different curves or surfaces, this paper presents an automatic programming system on microcomputers. This NURBS is applied to modelline and fitting complicated curves and surfaces.The arc spline is combined with the NURBS to determing the cutter path in accordance with the features of the interpolation movement of NC machine tool. Three methods have been proposed to solve the overcutting problems.

中图分类号: 

• TP391.73