锻压技术

基于两段排样方式的剪冲下料优化算法

英文标题：An optimization algorithm for shearing and punching problem based on

作者：向文欣荀珂冉翠翠

分类号：TP391

出版年,卷(期):页码：2019,44(6):35-40

摘要：

针对金属板材剪冲下料问题，提出一种基于两段排样方式的优化算法。下料过程分两个阶段:第1阶段将板材剪切成条料，第2阶段将条料冲压出零件。两段排样方式把板材划分为两个段，每个段包含一组相同长度和方向的条料，每根条料仅包含同种零件。首先构造排样算法生成单张板材上零件的两段排样方式，采用动态规划技术确定条料在段中的优化布局，采用启发式方法确定板材的最优两段划分。然后构造下料算法，通过调用上述排样算法生成一系列排样方式，按照板材使用张数最小原则确定每个排样方式的使用次数，得到下料方案。对比文献中基准例题的计算结果表明，本文算法的板材下料利用率高于其他3种文献算法，并且计算时间合理。

For the problem of shearing and punching for sheet metal, an optimization algorithm based on two-segment layout was proposed, and the cutting process was divided into two stages. In the first stage, the sheet was sheared into strips, and in the second stage, the parts were punched in the strips. With the two-segment layout, the sheet was divided into two segments, each segment contained a set of strips with the same length and direction, and each strip contained only the same parts. Firstly, the layout algorithm was constructed to generate the two-segment layout of parts on a sheet, the optimal layout of the strips on the segment was determined by dynamic programming technique, and the optimal two-segment division of sheet was determined by the heuristic method. Then, the cutting algorithm was constructed, and a series of layouts were generated by calling the above layout algorithm. According to the principle of the minimum number of sheets used, the number of times used for each layout were determined, and the cutting plan was obtained. The calculation results of benchmark instances in the literature show that the utilization rate of metal sheet cutting of the algorithm in this paper is higher than that of three literature algorithms, and the calculation time is reasonable.

基金项目：

河南省职业教育教学改革项目（ZJC15056）

向文欣（1986-），女，硕士，讲师 E-mail：wxsc205@163.com

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