Based on the index of motion stability for stepping motor systems, according to the module of constant acceleration-deceleration motion planning, a conception of optimal interpolation period was proposed both in single-axis motion and multi-axis motion, and the selection rules were given theoretically. Theoretical analyses and machining experiments have shown that precision, efficiency and stability restrict mutually in CNC machining. To achieve the best motion stability and machining quality, the mentioned parameters should be selected suitably when designing machine tools or selecting machining parameters. The proposed interpolator has already been applied to nonmetal-carving machines with an in-house developed open CNC.

以升降速过程中步进电机的理论运动平稳性为评价指标，参考匀加减速模型，提出了单轴运动和多轴运动时最优插补周期的概念，并通过理论分析给出了其选择依据。理论分析和加工验证表明，数控加工中的精度、效率和平稳性之间存在着固有的相互制约关系，在设计数控机床或选用加工参数时，应当综合考虑，使三者相互协调以获得最佳的运动性能和加工质量。该算法已成功应用于所开发的非金属雕刻机数控系统。

 

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