An Integrated Approach to Accurate Part Manufacture in Single Point Incremental Forming Using Feature Based Graph Topology
An Integrated Approach to Accurate Part Manufacture in Single Point Incremental Forming Using Feature Based Graph Topology
复制标题
使用基于特征的图拓扑在单点增量成形中精确制造零件的集成方法
DOI：
10.4028/www.scientific.net/kem.504-506.869
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Duflou
中科院分区：
文献类型：
--
作者：
A. Behera;B. Lauwers;J. Duflou
以往的研究表明，优化的刀具路径的基础上的行为的个别功能和功能的相互作用，可以用来提高零件的单点渐进成形功能的精度。这些刀具路径是用零件的补偿CAD文件生成的，这些文件是通过预测各个特征的偏差而产生的。然而，为了提高整个零件的精度，重要的是要系统地查看所有单个特征的行为以及特征之间所有可行的相互作用。在本文中，作者提出了一个图形拓扑的方法来整合的影响，目前在一个部分的所有功能的行为。对于任何给定的部分，一个概念图的构建表示所有的功能，并连接它们的空间位置与概念关系的基础上。接下来，分析基于生成的图的所有可能的特征交互作用，并预测由于未补偿测试中的可行交互作用而产生的偏差。根据存在的特征类型和交互作用，生成用于精确零件制造的综合策略。该策略可以由选择一个或多个补充刀具路径策略组成，用于补偿零件的预期偏差。接下来讨论了说明通过这种技术生产的零件的精度提高的案例研究，以证明使用基于图形的方法的合理性。
Previous studies have shown that optimized tool paths based on behavior of individual features and feature interactions can be used to improve the accuracy of features in parts produced by single point incremental forming. These tool paths are generated with compensated CAD files of the part, which result from a prediction of deviations of individual features. However, in order to improve the accuracy of an entire part, it is important to systematically look at behavior of all the individual features and all feasible interactions between features. In this paper, the authors present a graph topology approach to integrating the effects of the behavior of all features present in a part. For any given part, a conceptual graph is constructed representing all the features and connecting them based on their spatial locations with conceptual relations. Next, all possible feature interactions based on the generated graph are analyzed, and the deviations due to the feasible interactions in an uncompensated test are predicted. Depending on the feature types and interactions present, a comprehensive strategy for accurate part manufacture is generated. This strategy may be composed of a selection of one or more complementary tool path strategies for compensating the anticipated deviations on the part. Case studies illustrating improvement in accuracy of parts produced by this technique are discussed next to justify the use of the graph based approach.