共查询到20条相似文献,搜索用时 93 毫秒
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分析了连接片的冲压工艺性,设计了多工位级进冲压成形方案,详细阐述了单排排样设计方案,还介绍了连接片多工位级进模的总体结构及特点。实践证明:该模具结构合理,加工质量好,生产效率高,对此类零件的级进模设计有重要参考价值。 相似文献
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杨天昊 《中国新技术新产品》2013,(2):131-131
排样图设计是多工位级进模设计的重要工作,是级进模设计需要完成的第一件大事,在排样图设计过程中,由于各方面的原因,会在排样图中增加空工位的设计。本文主要论述多工位级进模排样图设计中增加空工位的目的及原则。 相似文献
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优化排样技术在包装印刷中的应用 总被引:2,自引:2,他引:0
以优化排样的理论方法研究为基础,主要是针对不规则形状进行排样优化.通过对现有的几种常见的主流算法分析比较、选定出一种适用于包装纸盒排板的优化排样方法,并在此基础之上提出了改进方案,以得到最有效的算法.根据提出的算法思路,利用计算机编程语言开发出包装纸盒排版排样优化的系统程序,将这种算法得以实现. 相似文献
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基于现有的优化排样算法,模拟鸡蛋孵化过程,设计一种孵化算法来解决排样问题。算法是对实际生活中存在现象的抽象和改进。将寻找最优解整个过程划分为占位,孵化,挤兑,抢占,复活,五个阶段,探索状态下排布决策的适应性,从而得到排样件在排样时的最优次序和最大可容纳的样本数目。 相似文献
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A hybrid approach for concurrent layout design of cells and their flow paths in a tree configuration
The layout design of multiple-cell automated manufacturing systems includes cell layout design and flow path layout design. Traditional layout methods often treat these two as separate problems and the sequence for solving them is usually cell layout first and flow path layout later. However, approaches of these kinds have one major drawback, that is, they may produce cell layouts that are awkward or difficult for designers to conduct flow path layouts, or cell layouts that do not turn out to be as good as expected after flow path layouts have been performed. Other drawbacks of traditional layout methods include irregular shapes of cells, inaccurate calculations of flow distances, etc. This paper addresses the layout problem of cells and their connecting flow paths in a tree configuration. The proposed layout procedure is designed to avoid the aforementioned drawbacks of traditional layout methods by emphasizing concurrent layout design of cells and flow paths. It combines a search algorithm and mathematical programming models. The search algorithm has a backtracking procedure that allows one to explore alternative layouts, while the mathematical programming models help one obtain accurate layouts of cells and flow paths. The proposed layout procedure also interacts with designers and allows designers to include their qualitative consideration into the layout design. As a result, one can obtain more accurate and good-quality layouts with the proposed layout procedure. 相似文献
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以钢铁厂总生产工艺流程为基础,按主要作业单元的总体设计要求,对钢铁厂主要作业场地的总体布置关系予以确定。依据生产车间、辅助车间、动力车间、交通运输设施、职能部门、附属生产和生活服务等部门之间的内外关联、物料进出状况,进行系统优化布置设计。再由各个作业单位的面积大小、位置关系,适当参考其他限制条件和常识惯例,做出钢铁厂总体布局设计,达到布局科学、节约资源、产能提升的效果。 相似文献
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In this paper, we propose a method for design of tandem automated guided vehicle (AGV) systems with single-load vehicles. We consider the concurrent design of machines layout and AGV guide paths for a tandem system. Our goal is to devise a method that can achieve the following objectives: (1) maximise the workload balance between loops; (2) minimise the inter-loop flow; and (3) minimise the total flow distance. Our method solves the problem in four stages, considering the machines layout and the tandem paths at the same time. It assigns machines to loops, determines the layout of each loop, arranges loops on the floor, and finally designs a transportation centre to link the loops. We compare the performance of our method with a sequential design method that first determines the layout and then assigns the machines to loops. We solve a number of randomly generated problems for both methods. Results indicate that the proposed algorithm performs faster and achieves lower values of inter-loop flows and inter-loop flow distances. 相似文献
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目的基于读者的阅读体验探究优化版式设计规则。通过对读者的阅读体验,深刻发掘读者阅读时的所有需要,使读者经过精心的版式设计,获得愉悦的阅读体验,从而由原来的阅读提升到悦读。方法主要通过文献研究法、对比分析法以及总结归纳法进行调查研究。通过查阅相关文献,了解有关版式设计的一般规则,了解读者的阅读心理及视觉习惯。通过与传统的版面编排进行对比,总结出数字媒体背景下版面编排设计的优化措施与办法。结论在对书籍的版式设计之前,有必要探究版式设计对读者悦读体验的影响,得出基于读者悦读体验的版式设计的方法和优化规则。 相似文献
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目的探究版面怀旧感设计的意义和方法。方法分析集个性、文化、信赖元素为一体而具有怀旧感共鸣作用的版面,提出怀旧感版面设计应着重从版面的色彩、图形、字体、排版、材料及肌理等方面进行怀旧元素的集成设计。结论怀旧是人们在生活中不断追求的情感需求,版面中怀旧感设计也将是设计师值得研究的永恒课题。版面设计的怀旧需求随着人们审美意识的改变和提高而有所突破和发展,设计者的方法应从书籍、电影、电视、多媒体等各种媒介上得到新的启发,注重传统文化与现代审美的有机结合,通过版面设计中的色彩、图形、字体及排版、材料及肌理4种表现方法来营造怀旧效果,使消费者在怀旧感消费的驱使下全面提升版面的阅读价值与欣赏价值,进而实现版面设计在形成个性化、体现文化性、产生信赖感3个方面的价值。 相似文献
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工业企业总平面系统布置方案的分形描述与优化选择 总被引:1,自引:0,他引:1
从分析组成总平面系统的作业单位之间的空间关联关系入手,应用分形方法描述总平面系统,即以关联维数分别表征总平面系统的理想图式与现实可行布置方案的空间关联程度.进而通过定义两关联维数的比值为趋近度水平,衡量各个现实总平面系统布置方案对于理想图式的趋近程度,并根据趋近度水平的大小实现总平面系统布置方案的优化选择.结合对某钢铁企业的实例分析,验证了对总平面系统进行分形描述的可行性以及优化选择的有效性. 相似文献
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This paper presents a simple heuristic to determine a common linear machine sequence for multiple products with different operation sequences and a limited number of duplicate machine types available for the job. The heuristic is based on minimisation of the total flow distance travelled by a product on the linear machine sequence. It is assumed that the flows of products are allowed only in the forward direction, either in-sequence or by-pass. It is also assumed that backtrack movements are not allowed. The effectiveness of the proposed heuristic is demonstrated through the solutions of two typical layout design problems taken from the literature. Subsequently, a number of additional problems are solved and their results are compared with the results applying existing methods. The results indicate that the proposed method can be an effective tool in solving layout design problems. 相似文献