A flexible process information reuse method for similar machining feature

A flexible process information reuse method for similar machining feature
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一种相似加工特征的柔性工艺信息重用方法

DOI:
10.1007/s00170-017-0131-6
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发表时间:
2017-02
影响因子:
3.4
通讯作者:
Jing Xuwen
Jing Xuwen
中科院分区:
工程技术3区
文献类型:
--
作者:
Liu Jinfeng;Zhou Honggen;Liu Xiaojun;Jing Xuwen

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动态变化的加工条件和不确定的制造资源的可用性迫使制造企业寻求先进的工艺规划,以提高生产率和确保产品质量。随着越来越多的三维工艺模型逐渐被应用,如何以更少的时间和更低的成本重用工艺模型中的嵌入式制造信息引起了人们的广泛关注。提出了一种基于相似加工特征检索的工艺信息重用方法。首先,采用三层组织模型表示工艺信息,加工特征作为父层,承载相应的制造信息。为保证工艺信息的准确获取,建立了加工特征与工艺信息的关联机制。其次,设计了一种八节点表示方案来表示具有相同拓扑和几何变化的相似加工特征。为加快相似特征检索,建立了加工特征面的外延属性邻接图和拓扑关系。最后,以某型飞机结构件为例,验证了该方法的有效性。该方法可以作为工艺信息积累的基础,促进智能工艺设计的发展和应用。
Dynamically changing machining conditions and uncertain manufacturing resource availability are forcing manufacturing enterprises to search advanced process planning in order to increase productivity and ensure product quality. As growing quantities of the three-dimensional process models are gradually applied, reusing the embedded manufacturing information in process models with less time and lower cost attracts a lot of attention. In this paper, a new flexible method is presented to reuse the existing process information based on retrieval of the similar machining feature. First, the three-level organization model is introduced to represent the process information; the machining feature which is seen as the parent layer carries the corresponding manufacturing information. To ensure accurately that the process information are obtained, the associated mechanism between the machining feature and process information is created. Second, an eight-node representation scheme is designed to represent the similar machining feature having same variations in topology and geometry. For accelerating similar feature retrieval, the extension-attributed adjacency graph and the topological relationship of the machining feature faces are built. Finally, some aircraft structural parts are utilized in the developed prototype module to verify the effectiveness of the proposed method. This method can be used as the basis for accumulation of the process information; it can promote the development and application of the intelligent process planning.
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影响因子: --
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