基于B3样条曲线的数控加工刀位轨迹计算的研究  

NC Maching Tool Position Track generating Based on B3-Spline Curve

作　　者：赵艳春[1,2] 张金萍[1] 王丹[1] 倪洪启[1] 董林福[1] 

机构地区：[1]沈阳化工学院机械工程学院,辽宁沈阳110142 [2]沈阳工业大学机械工程学院,辽宁沈阳110178

出　　处：《沈阳化工学院学报》2009年第2期147-149,169,共4页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：为解决自由曲线(面)数控加工刀具轨迹规划问题,采用B3样条进行轨迹规划.为了解决刀尖与刀心的误差补偿问题,采用等距曲线,推导等距B3样条插值算法.运用该方法加工出来的凸轮精度高,光滑性好.实例说明B3样条曲线同样能达到自由曲线(面)数控加工中要求的精度及光滑性,且计算量小.It is an integrant problem to settle what generates NC maching tool track of free curve. NURBS curve is usually used, but it is complicate to form and has big count. B3 curve has highly characterized, relatively small size, simple count, and it is easy to be controlled In this paper B3 curve is used to generate track, and offset curve is used to settle the error compensation problem between the tool nose and cutter center, and the interpolation algorithm of offset B3 spline is given, Experimental results indicated that the machining accuracy is high and count amount is small.

关 键 词：B3样条曲线 数控加工 插值 

分 类 号：TP205[自动化与计算机技术—检测技术与自动化装置]