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首页> 外文期刊>International Journal of Production Research >Knowledge-based sequence planning of shearing operations in progressive dies
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Knowledge-based sequence planning of shearing operations in progressive dies

机译：基于知识的级进模切操作顺序计划

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This paper aims to study the methodology of building the knowledge of planning adequate punches in order to complete the task of strip layout for shearing processes, using progressive dies. The usage of superimposition of punches for planning strip layout is widely accepted among progressive die designers; however the huge number of combinations of punches may turn this easy-to-understand process into a nightmare. The proposed methodology uses die design rules and characteristics of different types of punches to classify them into five groups: prior use (the punches must be used first), posterior use (must be used last), compatible use (may be used together), sequential use (certain punches must precede some others), and simultaneous use (must be used together). With these five groups of punches, the searching space of feasible designs will be greatly reduced, and superimposition becomes a more effective method of punch layout. The superimposition scheme may generate many feasible solutions. Although none of them really violates die design rules, some of them are just better than others. An evaluation function based on number of stages, moment balancing and strip stability is developed. For meeting different designers' preferences, these three factors are coupled with various weightings, so, designers can fine tune and find better results. The whole process is not only to provide a new approach to solving the superimposition puzzles, but also to try to integrate the die design rules and designer's personal experience, which should be extremely helpful in speedier progressive die design.
机译：本文旨在研究建立规划足够冲头知识的方法，以完成使用渐进式模具进行剪切过程的带材布置任务。渐进式模具设计人员广泛接受使用冲头叠加来规划带材布局；但是，大量的打孔组合可能会使这种易于理解的过程变成一场噩梦。提议的方法使用模具设计规则和不同类型冲头的特征将其分为五类：先用（必须先使用冲头），后用（必须最后使用），兼容使用（可以一起使用），顺序使用（某些打孔器必须先于其他打孔器）和同时使用（必须一起使用）。使用这五组打孔器，可以大大减少可行设计的搜索空间，并且叠加成为更有效的打孔器布局方法。叠加方案可能会产生许多可行的解决方案。尽管它们中没有一个确实违反了模具设计规则，但是其中一些只是比其他更好。开发了基于级数，力矩平衡和带钢稳定性的评估功能。为了满足不同设计师的喜好，这三个因素与各种权重结合在一起，因此，设计师可以微调并找到更好的结果。整个过程不仅为解决叠加难题提供了一种新方法，而且还试图整合模具设计规则和设计师的个人经验，这对于加快渐进式模具设计将非常有帮助。

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