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Study on Generation of 3D Assembly Dimension Chain

机译：3D装配尺寸链生成的研究

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A new method to automatically generate the 3D assembly dimension chain was proposed in this paper. The generative rule to obtain the loop circuit and the method to generate the VGC (Variational Geometric Constraints) network for dimension chain was provided based on the VGC theory and a generation strategy of the assembly dimension chain based on 3D CAD drawing was also presented. After the closed-loop was specified by the user, the system will extract the assembly constrain relations and the dimension information needed according to mating trees from the assembly drawing to generate the VGC network, then search for the shortest path in the VGC network to prepared for the setup of the assembly data base for the dimension chain, eventually the assembly dimension chain can be automatically generated from the database according a certain method.
机译：本文提出了一种自动生成3D装配尺寸链的新方法。提出了基于VGC理论的生成回路的生成规则和尺寸链VGC网络的生成方法，并提出了基于3D CAD制图的装配尺寸链生成策略。用户指定闭环后，系统将从装配图中提取装配约束关系和根据配合树所需的尺寸信息，生成VGC网络，然后在VGC网络中搜索最短路径以准备为了为尺寸链建立装配数据库，最终可以根据某种方法从数据库自动生成装配尺寸链。

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