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经济的发展促进了对散装物料运输的需求,进而增大了对带式输送机的需求。但是,由于生产该输送机的主要部件——托辊的生产物流系统效率低下,加剧了输送机供需矛盾。针对这一问题,鉴于托辊结构及生产工艺的复杂性,利用Petri网对托辊的生产物流系统进行建模,直观地展现了托辊的生产过程,精确地描述了系统中事件的相互关系,并构造关联方程证明了该模型的可行性。在此基础上,运用Witness软件进行仿真,得到了导致生产物流系统效率低下的瓶颈设备,并对其进行优化以提高生产效率。仿真结果证明:优化方案减少了平均处理时间和阻塞率,增加了托辊的产量,提高了托辊生产物流系统的效率。 相似文献
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设计开发了一种操作简单、改动智能方便的锂电池柔性总成装配线。根据新能源企业生产实际需求,给出了总体设计方案,完成了锂电池总成装配线装置的结构设计,搭建了电气控制线路,设计了总成装配线的控制程序系统,同时设计了触摸屏组态界面。集成了新能源锂电池生产装配工序可选、运行参数可控、手自动切换、每日生产结果图表化等控制功能。该设计可根据生产产品的特点,灵活选择需要的工位配置,具有柔性生产的特点,可有效改善传统人工在锂电池箱体搬运、转换、装配等步骤中出现的箱体磨损和效率低下等问题,改进了锂电池装配的工艺。系统已完成调试,应用于实际生产,大大提高了新能源产业的生产效率。 相似文献
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基于目前我国固体废弃物处理能力不足和效率低下的问题,并根据固体废弃物的特性和传统压缩设备的工况要求,结合PLC自动化应用,设计了一款基于PLC的固体压缩设备系统。实践表明,该系统能较好满足当前生产生活对固体废弃物压缩设备的技术性能要求。 相似文献
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一种两段式传感器网络路由协议 总被引:1,自引:0,他引:1
本文提出了一个两段式路由协议TSR,解决了目标追踪系统中主动路由协议效率低下的问题。在目标出现后首先建立一条主路由,然后随着目标的移动按需延长。与主动路由相比,实现了按需路由,节省了路由维护开销。与按需路由(DSR、AODV等)相比,减少了路由发现次数,降低了路由发现延迟对系统实时性的影响。仿真和实验表明TSR协议可大幅降低系统的路由开销,适合基于无线传感器网络的目标检测、追踪系统的应用。 相似文献
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针对传统精制乳酸生产系统效率低下、连续生产能力较低的状况,介绍了一种利用组态软件MCGS和可编程控制器S7-300(PLC)开发的可视化精制乳酸生产控制系统.系统由下位机执行温度数据、液位数据的采集、存储和计算等功能,在乳酸生产系统中运用模糊PID控制算法;由上位机监控整个生产过程,整套系统提高了生产的效率和产品的质量.叙述了乳酸精制的工艺过程,系统算法分析、模糊控制器设计、硬件组成、软件流程及开发过程. 相似文献
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介绍了刀片钝化抛光自动控制系统的设计以及在刀片钝化抛光中的应用,解决了国内同类设备定位精度及一致性差、钝化抛光质量不稳定和生产效率低下的难题. 相似文献
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针对空气悬架车辆生产过程由于自动化、信息化水平低而导致的生产效率低下的问题,文章设计了基于UDS的空气悬架车辆自动化生产线。该系统基于UDS协议实现生产线设备、车辆控制器、云端之间的的通信,实现了在空气弹簧充气、车高标定、最终检测过程中的智能流程控制,对生产过程实现云端实时监控,有效地提升了企业生产与故障诊断效率。 相似文献
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针对新能源汽车生产线对电机数量的需求越来越多,电机端盖尺寸的测量精度要求越来越高,为了提高操作人员对生产的电机端盖准确验证效率,利用物联网相关技术设计了一种电机端盖尺寸检测系统。采用光栅位移传感器实现电机端盖尺寸的高精度测量,运用二维码标识端盖,射频识别卡进行操作人员权限管理。工控机通过工业以太网与测量仪器和MES服务器连接,分别使用FINS协议和HTTP协议进行数据交互。检测系统已应用于某产线,试运行结果表明系统操作方便,运行稳定,可扩展性强,显著提高了生产效率。 相似文献
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针对单批次的批量钢管的相贯曲面的加工,通用的加工方法,生产效率低、成本高、劳动强度大,而数控加工的设备投入大、设备后期利用率低下的情况。在采用该方法对钢管相贯曲面的切割,用最少的投入,有效的提高了生产效率、降低成本,同时能够适应于各种不同的生产场地。 相似文献
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素肠是一种人们喜爱的食品,目前市场上的素肠大多手工制作而成,不仅效率低下且工人的劳动强度大。针对一款新型的素肠加工机,利用PLC、传感器和气动技术对其控制系统进行设计,实现了生产过程的自动化并提高生产的效率和产品的质量。 相似文献
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References: 《机械工程学报(英文版)》2007,20(1):96-99
Reconfigurable products and manufacturing systems have enabled manufacturers to provide "cost effective" variety to the market. In spite of these new technologies, the expense of manufacturing makes it infeasible to supply all the possible variants to the market for some industries. Therefore, the determination of the right number of product variants to offer in the product portfolios becomes an important consideration. The product portfolio planning problem had been independently well studied from marketing and engineering perspectives. However, advantages can be gained from using a concurrent marketing and engineering approach. Concurrent product development strategies specifically for reconfigurable products and manufacturing systems can allow manufacturers to select best product portfolios from marketing, product design and manufacturing perspectives. A methodology for the concurrent design of a product portfolio and assembly system is presented. The objective of the concurrent product portfolio planning and assembly system design problem is to obtain the product variants that will make up the product portfolio such that oversupply of optional modules is minimized and the assembly line efficiency is maximized. Explicit design of the assembly system is obtained during the solution of the problem. It is assumed that the demand for optional modules and the assembly times for these modules are known a priori. A genetic algorithm is used in the solution of the problem. The basic premise of this methodology is that the selected product portfolio has a significant impact on the solution of the assembly line balancing problem. An example is used to validate this hypothesis. The example is then further developed to demonstrate how the methodology can be used to obtain the optimal product portfolio. This approach is intended for use by manufacturers during the early design stages of product family design. 相似文献
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以某汽车制造企业发动机装配线为研究对象,介绍了视觉系统及其组成部分,视觉系统在发动机装配线的具体应用包括硬件构成、应用原理以及主要操作流程,论证了视觉系统应用于发动机装配线防错应用的优越性,以及与企业效益之间的内在关系。 相似文献
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围绕汽车变速器产品族装配线制造系统的柔性与重构问题,应用面向生产线重构的产品族装配工艺规划与重构装配线设计集成方法,提出可重构装配线的“主干线”设计思想。在对产品族基于功能实体识别的工艺规划基础上设计出“主干线”的柔性结构及系统的可重构实现机理。最后应用多智能制造思想构建了重构装配线的智能体系结构。该方法为提高实际装配线制造系统的柔性提供了有效技术手段。 相似文献
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G. Prabhaharan P. Asokan P. Ramesh S. Rajendran 《The International Journal of Advanced Manufacturing Technology》2004,24(9-10):647-660
Conventional tolerance analysis is tedious and time consuming, which makes engineers resist doing it. Complex assembly problems are generally beyond the capabilities of most design and manufacturing engineers. In this paper, genetic algorithm, a kind of non-traditional optimization technique is used as the basic foundation for optimal tolerance allocation to help design and manufacturing engineers to overcome the shortcomings in the conventional tolerance stack analysis and allocation system. 相似文献
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Christophe Perrard Eric Bonjour 《The International Journal of Advanced Manufacturing Technology》2013,69(1-4):669-685
Sequence planning generation is an important problem in assembly line design. A good assembly sequence can help to reduce the cost and time of the manufacturing process. This paper focuses on assembly sequence planning (ASP) known as a hard combinatorial optimization problem. Although the ASP problem has been tackled via even more sophisticated optimization techniques, these techniques are often inefficient for proposing feasible assembly sequences that satisfy the assembly planners’ preferences. This paper presents an approach that makes easier to check the validity of operations in assembly process. It is based on a model of the assembly planners’ preferences by means of strategic constraints. It helps to check a priori the consistency of the assembly constraints (strategic and operative constraints) given by the assembly system designers before and while running an assembly plan generation algorithm. This approach reduces the solution space significantly. A case study is presented to demonstrate the relevance of the proposed approach. 相似文献
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以上汽乘用车发动机厂为案例,通过eM_Plant软件进行仿真,运用人工平衡的方法,对该装配线进行了分析和改进,指出平衡问题是装配线的设计与管理中的重要部分,会直接影响到制造系统的生产率。 相似文献