笔式加工轨迹的B样条曲线逼近

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (1): 59-62.

笔式加工轨迹的B样条曲线逼近

李万军赵东标牛敏

李万军赵东标：南京航空航天大学机电学院, 江苏南京 210016; 牛敏：山东工业职业学院机电工程系,山东淄博 256414

收稿日期:2009-10-30 出版日期:2010-02-16 发布日期:2009-10-30
作者简介:李万军(1981-),男,山东淄博人,博士研究生,主要研究方向为数控加工技术.E-mail:baishikele2004@163.com
基金资助:
江苏省自然科学基金资助项目(BK2003005)

B-Spline curve approximation for pencil-cut tool path

LI Wan-Jun, ZHAO Dong-Biao ：College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
NIU Min：Mechanical and Engineering Department, Shandong Vocational College of Industry, Zibo 256414, China

Received:2009-10-30 Online:2010-02-16 Published:2009-10-30

摘要/Abstract

摘要：

提出一种新的节点矢量计算方法,应用于最小二乘法B样条曲线的逼近计算,通过实例验证，此算法生成的逼近曲线精度高,曲线更具有光顺性,能够很好抑制逼近曲线的扭摆现象,能够满足逼近精度要求。利用此算法对笔式加工轨迹进行B样条逼近,生成C²连续且光顺的刀位路径,大大缩短数控加工代码量,提高加工效率和加工精度。

关键词: 笔式加工;最小二乘法;B样条曲线;逼近

Abstract:

A new method was presented to compute the knot vectors, and the leastsquare method was used to compute approximation of BSpline curve.This methodhad high approximation precision and good controllable for the wiggly in the first point and the end point. The approximation curve could meet the tolerance. Practical experience showed that the approximation pencilcut path is a C²continuous curve and has good fairness, which has high machining accuracy and could reduce the number of programs in NC processing.

Key words: pencil-cut; least square method; B-Spline curve; approximation

李万军赵东标牛敏. 笔式加工轨迹的B样条曲线逼近[J]. 山东大学学报(工学版), 2010, 40(1): 59-62.

LI Wan-Jun, ZHAO Dong-Biao, NIU Min. B-Spline curve approximation for pencil-cut tool path[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(1): 59-62.

参考文献

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed