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首页> 外文期刊>Applied Mathematical Modelling >The integrated lot sizing and cutting stock problem in an automotive spring factory
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The integrated lot sizing and cutting stock problem in an automotive spring factory

机译：汽车春季厂中的综合彩色尺寸和切割股票问题

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摘要

In this paper, a manufacturer of automotive springs is studied in order to reduce inventory costs and losses in the steel bar cutting process. For that, a mathematical model is proposed considering parallel machines and operational constraints, besides the demand, inventory costs and limits for items and final products. This one-dimensional integrated lot sizing and cutting stock problem is solved by a price-and-branch approach, using column generation and a method for obtaining integer solutions. Results using real data show that the proposed method achieved, in reasonable computational time, considerably better solutions than current practice at the company. Furthermore, focused on managerial insights, tests with random data were performed to analyze the influence that different parameters have in the solution, as well as the overall performance of the method.
机译：本文研究了汽车弹簧的制造商，以减少钢筋切割过程中的库存成本和损失。为此，提出了一个数学模型，考虑了并行机器和运营限制，除了需求，库存成本和项目和最终产品的限制之外。使用列生成和获得整数解决方案的方法，通过价格和分支方法解决了这一维数集成批量尺寸和切割股票问题。使用实际数据的结果表明，在合理的计算时间内实现了所提出的方法，比公司目前的实践相当更好的解决方案。此外，专注于管理洞察力，进行随机数据的测试，以分析不同参数在解决方案中的影响，以及方法的整体性能。

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