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为了简化五轴CNC数控系统中的刀具定向运动的编程工作,提出一种基于四元数球面Bézier样条插补算法.该算法根据建立的刀具运动的空间数学模型,实时插补计算出刀具路径点和刀具定向矢量.实验结果表明,该算法不仅保证了刀具平移运动和旋转运动的同步协调性,而且有效的提高了加工精度,满足了五轴高速高精的加工要求.
In order to simplify the programming of the tool orientation movement in a five-axis CNC system, a quaternion sphere-based Bézier spline interpolation algorithm is proposed, which calculates the tool path by real-time interpolation according to the established spatial mathematical model of tool movement Point and tool orientation vector.Experimental results show that this algorithm not only ensures the synchronous coordination of tool translational and rotational motions, but also effectively improves the machining accuracy and meets the machining requirements of five-axis high-speed and high-precision.