Specification: twist drill, three-blade drill, reamer, end-milling cutter.

规格：麻花钻、三刃钻、铰刀、立铣刀。

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The paper research the problem of bow to build the model of cutter with the design technology of virtual product, and built the 3D models of twist drill, gang drill, gear hob;

讨论了用虚拟技术对复杂金属切削刀具进行建模的问题，建立了麻花钻、群钻、齿轮滚刀的三维数字模型；

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