共查询到20条相似文献,搜索用时 140 毫秒
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在装配制造业中,快速准确提供各个工位所需要的物料对提高产品的生产效率起着非常重要的作用.根据制造BOM和装配工艺流程制定出配送BOM,确定每个工位所需物料种类,根据产品的生产计划和生产节拍等信息确定最优配送周期,计算每次配送量,考虑配送的提前期后得出配送的准确时刻,做到循环准时化配送. 相似文献
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多品种、小批量生产模式下物料配送问题是一个涉及影响因素众多的复杂计划调度问题,小批量、多频次物料配送除了考虑满足生产线多变的物料需求外,还应考虑配送成本节约的问题。针对传统物料配送未能同时考虑物料需求变化和配送成本节约问题,基于泛在制造信息,建立一种新的动态物料配送批量决策模型。通过层次划分将整体决策转化为分层决策,采用运输-库存联合优化方式求取最佳配送批量。示例结果表明,该决策模式在满足生产线多变物料需求的同时,对配送成本有很好的控制作用。 相似文献
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顾晨阳 《传动技术(上海)》2016,30(1):40-45
本文结合公司当前的物料配送系统,指出其目前存在的问题,提出了一套启发式算法。首先以生产节拍为基本单位,设置一个生产周期,以此分别计算出物料的需求量、配送车辆的车辆数、配送周期、以及配送人员的等待时间。然后求出最短的配送人员等待时间,以此状态下的生产周期作为实际配送的生产周期,从而展开物料配送。最后本文结合公司的实际问题,运用启发式算法求解出实现准时化配送的方案。 相似文献
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针对多品种跨批量制造企业仓储管理中储区规划及货位分配存在的问题,从精益生产思想出发,提出精益仓储的理论,建立基于精益思想的仓储优化模型,并结合ABC法对某企业的仓库储区进行优化,提出具体应用方案。研究结果表明,优化方案极大地提高了库房的空间利用率,缩短了物资出入库时间。 相似文献
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本文简要介绍了精益生产的目标和特征。它是在Ford汽车公司组织流水线大量生产的基础上所发展的新型制造技术及生产组织方式,开创出更为先进的产品质量、生产效率以及经济效益。上海大众发动机厂就是采用精益生产的哲理,从文中的12个方面加以实现。本刊分两期全文转载这篇文章给读者。精益生产对于机电工业来说,就是要求提供能生产出零不良品、零故障和零误期的设备,即在设备的生产精度上稳定地达到产品技术条件上允差值的 相似文献
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L. N. Pattanaik B. P. Sharma 《The International Journal of Advanced Manufacturing Technology》2009,42(7-8):772-779
Lean manufacturing is an applied methodology of scientific, objective techniques that cause work tasks in a process to be performed with a minimum of non-value adding activities resulting in greatly reduced wait time, queue time, move time, administrative time, and other delays. In a cellular manufacturing system (CMS), machines are grouped into several cells, where each cell is dedicated to a particular part family and the objective is to maximize cell independence. CMS helps in reducing the material handling, work-in-process, setup time, and manufacturing lead time and improve productivity, operation control, etc. The facility layout used during lean implementation can be either be a line layout or in the form of cells. After grouping parts in to various part families, machine cells can be formed to produce those parts well inside the cells. As some of the lean manufacturing concepts are different from that of cellular manufacturing, e.g., establishment of Takt time, Takt-based resource balancing, etc., some new cell design methodology is required to be explored that is compatible with lean manufacturing. The rate at which work progresses through the factory is called flow rate or Takt. In the present work, a design methodology for cellular layout is proposed for implementing lean concepts and is exemplified in a manufacturing industry dealing with ammunition components for defense applications. Based on Takt time for various parts, the production flow among cells was optimized thus minimizing several non-value added activities/times such as bottlenecking time, waiting time, material handling time, etc. This case study can be useful in developing a more generic approach to design cellular layouts in lean environment. 相似文献
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从21世纪对产品特征的要求出发,提出了基于生命周期的绿色制造技术这一新概念,简述了绿色制造技术产生的背景,研究的方法及清洁生产,绿色材料与绿色产品的研究。 相似文献
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随着加工制造业领域的拓宽和生产规模的扩大,原材料和半成品及成品的储存成为企业必须解决的重要问题,采用自动化立体仓库已成为必然的选择,因此自动化立体仓库的应用领域将更加广泛.针对自动化立体库的概念、特点及作用进行了介绍,并对发展趋势做了分析. 相似文献
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精益生产是比传统生产方式更精细化的先进制造技术,起重机械行业的精益生产模式尚无成熟应用案例。文中提出了精益生产在起重机械行业应用的可能性,研究了起重机械精益生产的3大工具,以及精益质量管理的要点。 相似文献
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模线样板生产时飞机制造的第一步,飞机的大部分零件和工艺装备都需要按模线样板制造,模线样板的生产进度直接影响新飞机的试制进度。因此,提高样板的质量和生产效率有很重要的意义。随着新工艺、新技术、新设备的出现,模线样板技术也不断发展,在我国MBD技术和条件已逐步成熟。模线样板技术正迎来一个新的发展阶段,大量化铣样板也基本实现数字化设计,由于化铣样板加工的特殊性,化铣样板的样板设计与其他种类的样板也不同,需要一个全新的设计方式,笔者对化铣样板的数字化设计与制造作了详尽的介绍。 相似文献
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Huabing Zou Xindu Chen 《The International Journal of Advanced Manufacturing Technology》2016,85(1-4):891-907
Automation is a powerful way to reduce production costs. The growing market demand for a wide set of models and small batch production make flexible automated production systems an emerging need in several industries. The aim of this paper is to analyze and to maximize the performance of robotized flexible production systems consisting of a robot, feeder, working station, and unloading station, where the operations of the working cycle are scheduled using a sequencing algorithm based on priority rules. Since the working cycle is not predefined, the cycle time is strongly influenced by the parameters characterizing the workcell such as the workcell layout, the robot transfer movements, the feeder, the working operations, and the presence of a buffer between stations. In this work, we modeled the working cycle of a simple but representative layout of an industrial robotized flexible production system with and without buffer, and we implemented a recursive algorithm to estimate the cycle time. The analytical model derived was compared to the experimental results, obtained by using a prototype of the flexible production workcell. The results show that the analytical model is a powerful tool to estimate the performance of the workcell and to identify the design variables or their combinations that maximize the throughput. 相似文献