最短経路問題の解法を利用した加工工程設計支援システムの開発 (第1報) : —最短加工時間を与える加工順序の解析—

概要

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In machining of products in which a large number of cutting tools and machining processes are required, the sequence in which a workpiece is machined has an effect not only on factors relating to productivity such as machining time, machining cost, and power consumption, but also on the machining error and quality of the machined surface. However, the number of combinations of processing sequences for machining of such products is extremely large, and it is therefore difficult to design an optimal machining process within a short time. In this study, an algorithm for solving the shortest path problem is used to develop a process planning support system that takes into account the various above-mentioned factors in machining using a machining center. The system incorporates various functions such as prevention of interference between the tool and the workpiece resulting from the machining sequence, prevention of processes in which previous machining is invalidated, and integration of processes performed using a same tool. Machining times based on NC data are calculated, and the shortest machining time for a product requiring 15 processes (using 9 tools) is analyzed. A comparison of results obtained using the proposed system with machining times required for processes designed by operators confirmed that the analytical results are valid.
公益社団法人精密工学会の論文