基于多工序制造过程的零件加工特征演变始态网络建模与分析

Modeling and Analyzing of a Machining-feature-oriented Initial Evolution Network Based on Multi-stage Manufacturing

为了实现各个加工特征形状和精度逐步满足质量技术要求,首先,对零件加工特征进行分类,对多工序制造过程中的各加工特征关联关系进行定义.然后,将零件加工特征映射为网络的节点,特征之间的关联关系映射为网络的边,构建了零件加工特征演变始态网络(machining-feature-oriented initial evolution network,MF-IEN),并通过度数和介数等统计指标对其耦合状态进行分析.最后,通过具体案例验证了方法的可行性.本研究揭示了零件多工序制造过程的加工特征演变规律,为有效辨识关键状态参数提供理论支持.

In multi-stage manufacturing, it is essential to meet the quality requirements of form and precision for machining features. First, the classification of machining features was carried on, and the association relationships among machining features were defined. Then, machining features were mapped into the network nodes; and the association relationships among machining features were mapped into the network edges. A machining-feature-oriented initial evolution network was established and degree/betweeness were used to analyze the network performance. Finally, a case study was used to verify the proposed method. It is expected that this study can reveal the evolution rule of machining features in multi-stage manufacturing, and provide a theoretical support for identifying the key machining state parameters.