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提出了新的曲面数字化模型，该模型的精度控制准则消除了现有刀位点计算误差分析中的不可靠因素．基于该模型，提出了一个新的参数曲面数控加工刀位点生成方法，有效地提高了刀位点生成速度
A new surface digital model is proposed. The precision control criterion of the model eliminates the unreliable factors in the error analysis of the existing tool point calculation. Based on the model, a new method for generating NC tool points based on parametric surface is proposed, which can effectively increase the generation speed of tool point