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参数化零件族与参变工艺流程之间的几何关联方法

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Keywords: 参数化零件族,参变工艺流程,加工特征,工艺能力

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Abstract:

为减少零件设计与加工系统设计之间的某些中间环节,缩短产品开发周期,提出了一种在参数化零件族与参变工艺流程之间建立几何关联的方法。该方法首先对一给定的参变工艺流程确定其能够制造的零件集合,即工艺能力包集,用一串特征关系图表示流程中工件与资源的静动态关系,通过不同形式的子图匹配与合并生成能力包集中零件的特征参数模型。然后,比较能力包集和参数化零件族中的零件特征模型,在拓扑同构条件下求解它们的参数等效区域。基于等效区域,建立同时属于能力集合与零件族的零件模型,构成这两零件集合的交集。交集中的零件特征模型同时与参变工艺流程和零件族有几何参数映射关系,从而可作为连接两方面的桥梁,有利于在零件设计与工艺设计之间建立互动关系。

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