The mathematical model of parallel and undevelopable ruled surface was constructed, the algorithm for NC ultrasonic grinding surface was founded.
建立平行、不可展直纹面数学模型，确定超声磨削加工平行、不可展直纹面时磨轮空间轨迹及其算法。
2
There are many different methods to develop the same undevelopable curved surface, the criteria must be created to evaluate which one is the most appropriate.