| 优化双圆弧拟合的曲面加工 |
| |
| 引用本文： | 沈纪桂,方志梅.优化双圆弧拟合的曲面加工[J].宁夏工学院学报,1997,9(1):5-10. |
| |
| 作者姓名： | 沈纪桂 方志梅 |
| |
| 作者单位： | 浙江大学ＣＡＤ＆ＣＧ国家重点实验室 |
| |
| 基金项目： | 浙江大学CAD＆CG国家重点实验室开放课题 |
| |
| 摘 要： | 本文提出一种雕塑曲面ＣＮＣ加工的新方法。针对目前ＣＮＣ加工的园弧拟合中出现的拟合节点多、园弧段数多、误差控制困难等问题，本文采用了一种优化的双园弧拟合方法的误差控制方法，使拟合数据点，计算工作量及园弧数均大大减少，插补误差得到有效的控制，从而提高了加工效率与加工质量，本方法在雕塑曲面的ＣＮＣ加工中具有实用意义。
|
| 关 键 词： | 双园弧拟合 数控加工 曲面加工 计算机数控系统 |
An optimal method in CNC machining of sculptured surfaces |
| |
| Authors: | Shen Jigui Fang Zhimei Cha Xanniang |
| |
| Institution: | State Key Laboratory of CAD&CG |
| |
| Abstract: | An optimal method in CNC machining of sculptared surfaces is proposed in this paper.It adopted the method of optimal biarc fitting and error controlling,in order to improve some existing problems,such as the numbers of fitting data points and arc's segments are too many,the error controlling is difficult in arc fitting and so on. This method has the following adventages:(1)The number of fitting data points is reduced greatly;(2)The computation is simple;(3)The interpolation error is controlled easily,Therefore,it has practical signiffcance in CNC machining of 3-D sculptured surfaces. |
| |
| Keywords: | inflection point cubic spline cubic parameter spline biarc fitting direction of tangential vector error controlling |
| 本文献已被 CNKI 维普 等数据库收录！ |
