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首先给出了剃前插齿刀的侧刀后刀面的全新设计方案和对应的几何模型，进而给出了以二次包络为主干的相应制造模型，最后通过生产中的实例验证了所述模型的可靠性。
At first, the new design scheme and the corresponding geometric model of the flank sharpening face of the shaving pre-shaving cutter are given, and then the corresponding manufacturing model with the secondary envelope as the main trunk is given. Finally, Describe the reliability of the model.