5-axis Polynomial Spline Interpolation in an Open CNC System
Using the advantage of polynomial spline interpolation to represent spatial curves with good approximation effect and mature technology, an instruction format with polynomial spline curves, which is suitability for five axes coordinated real-time interpolation, is presented against the current five axes coordinated linear interpolation method with drawbacks of low-speed, low-accuracy and great NC files in sculptured surface machining. Structure of the controller of an open CNC system developed by ourselves is introduced. And the method to realize the interpolation in translator and interpolator is further discussed detailedly. Through the illustration, it has been indicated that the proposed method can avoid all the shortages of five-axis linear interpolation method. The preliminary application results show that the said technology has a better suitability.
Free-form surface 5-axis machining Open CNC system Polynomial spline Translator Interpolator
LIU Yuan WANG Yong-zhang HAN Zhen-yu
School of Mechatronics Engineering Harbin Institute of Technology Harbin,Heilongjiang Province,China
国际会议
深圳
英文
1086-1090
2008-12-10（万方平台首次上网日期，不代表论文的发表时间）