An algorithm for tool path generation of nc machining by projection method is presented in this paper and the interference checking of the cutter is carried out.

提出了用投影方法来生成nc加工刀具轨迹的算法，并完成刀具干涉的检查。

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The tools for components shape interference checking up, holes connecting and their security examining are imported to the integrated environment to check up human-computer interaction result in time.

将集成块设计中元件外形干涉校核、孔道连通及校核手段引入集成环境，使人机交互设计结果能得到及时的检验。

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Then, According to the cutting tooth processing principle, establish hypoid gear model, and conduct virtual assembly, interference checking, provides the precise model for the following analysis.

再根据切齿加工原理，建立了准双曲面齿轮模型，并进行虚拟装配，干涉检查，为后面分析提供精确的模型。

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