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。

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.

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在传统的二维设计模式下，零件不是以实体模型进行设计的，因此无法在计算机中对机器进行虚拟装配和运动仿真。

In the traditional 2d design mode, parts are not designed as solid models, therefore the virtual assembly and motion simulation for machinery products are impossible.

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本文从虚拟维修中装配拆卸模型的基本特点入手，给出了在进行虚拟维修中所需要的模型的层次化组织结构。

In this paper we begin from the feature of the assembly and disassembly modeling in the virtual maintenance, propose a layering method to assembly and disassembly modeling building.

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