企业CD段流水线的瓶颈分析与平衡改善

在生产线平衡原理及改善方法的基础上,以工作测定为依据,分析了企业CD段流水线的工作能力及其平衡状况,针对整条流水线的瓶颈,结合生产线实际情况提出了可行的持续改进方案,并对改进前后的方案进行了对比分析,达到了降低瓶颈工位工作时间、提升流水线平衡性、提高产能的目的,实际效果明显.     

基于仿真的汽车发动机再制造生产线配置优化

以汽车发动机再制造生产线为对象,以设备配置优化和生产线平衡为目标,在分析发动机再制造流程和采集基本工艺数据的基础上,建立了发动机零部件再制造生产线仿真模型;在分析生产线性能数据的基础上,提出改进与优化方案,实现了生产线的平衡,从而以最小的投入满足生产需求.     

应用 IE 技术优化手机包装盒生产线的研究

以手机包装盒生产线为研究对象,运用IE秒表测时法对各工位进行测定,应用IE方法对测定结果进行了分析和研究,发现了生产线存在的问题,提出了生产线重组方案。通过设备和工具的改进、作业内容和人员的重新调配以及改善工作场地布置等措施,设计出了新的生产线,提高了生产线平衡率和成品生产效率。     

某电泵装配厂生产线的改善及方案的评价

以某企业电泵装配生产线为研究对象,分别采用价值分析技术、“一个流”技术以及工作研究技术分析了企业现有生产线中存在的问题,提出了以上3种改善技术各自的改善方案。为了比较3种技术对该企业生产线的改善效果,运用TOPSIS法和灰色关联度法对改善方案进行综合评价,得出了“一个流”技术对该企业生产线改进取得的效果最佳,其次为工作研究技术,最后为价值分析技术的结论。     

基于仿真技术的生产线平衡优化研究与应用

以某压缩机厂装配车间为研究对象,运用面向对象的仿真建模技术建立压缩机装配线的仿真模型.并基于仿真数据分析装配线瓶颈,运用生产线平衡优化方法设计装配线平衡优化方案.根据企业需求及经济性因素,利用仿真模型对优化方案进行测试并选择合理的生产线改进方案.通过对压缩机厂装配线进行改进,达到了提高装配线产能、平衡各工序负荷的效果,实际数据和仿真数据吻合,验证了仿真技术的有效性和生产线平衡优化方法的可靠性.     

液晶显示器外壳生产线平衡分析与改善

液晶显示器外壳生产线平衡分析与改善 针对苏州一个公司的液晶显示器外壳生产线平衡率不高的问题,通过程序分析,综合运用5W1H提问技术、ECRS原则等方法和工具,对其液晶显示器外壳生产线流程进行重新设计。结果表明,改善方案在等待时间、搬运时间和距离等方面有明显的改进。针对原流程中的瓶颈作业,通过运用Flexsim仿真软件进行分析,对比改进前和改进后各工位的作业时间、空闲时间及阻塞率等,讨论新方案的实施效果。最后对整个生产线改进效果进行预测,并对该公司液晶显示器外壳生产线改进提出实施建议。     

流程程序分析方法在印染生产线改进中的应用

以某公司的印染生产线为研究对象，运用流程程序分析方法和5W1H提问技术分析生产线存在的问题，并根据ECRS四大原则，对生产线的工艺内容、工艺方法、工艺程序和空间布置提出改进方案。     

电机总装流水线的分析与改进

以电机总装流水线为研究对象,运用秒表测时法对各工位的作业时间进行测定,找出影响流水线生产能力的瓶颈工位和能力过剩工位,进而运用生产管理学及基础IE流水线平衡相关理论对流水线在设备布置、人员利用、任务分配等方面存在的问题进行分析与改进,设计出新的流水线方案,并对改进前后的方案进行对比,实现了优化生产线、提升实际产能、提高企业的生产效率的目标.     

填料生产线精益生产的整合方案研究

以某化工填料生产线为研究对象,通过对填料生产系统工艺流程现状的物流分析,提出了生产设备成组布局的整合方案,从设备布置方式和生产系统优化两个方面找到影响物流顺畅运行与在制品库存最小化的改进措施,设计了满足不同生产批量与不同生产周期的精益物流过程,通过对生产流程改进的前后对比与过程仿真,验证了改进后的生产设备与物流的重组模式是实现填料生产线精益生产的一个切实可行的解决途径。     

基于模特法的摩托车包装生产线平衡

针对摩托车包装作业线上各工序之间不均衡且存在大量等待时间的现象,以动作经济原则和"ECRS"四大原则为指导,结合生产线平衡理论,运用模特法对包装线上的瓶颈工序进行了分析,根据分析结果设计了相应的改善方案。方案的实施使生产线平衡率提高了22.2%,生产节拍降低了5.43 s。     

插口组装线的产能分析和平衡改善

基于生产线平衡原理和基础工业工程(IE)手法,以作业测定为依据研究插口组装线的产能和平衡状况,针对产能过剩工序和瓶颈工序,分析工艺流程及操作,提出了持续改善方案.并对改善结果进行分析,在减少了一道工序的基础上使产能满足需求,平衡率达到预期目的.     

基于柔性生产的生产物流平衡策略研究

柔性生产的有效开展需要保持生产物流始终处于平衡状态。研究了柔性生产下如何保持生产物流平衡的策略问题。首先分析了柔性生产下生产物流平衡的内容,然后就如何平衡生产物流进行了深入探讨。研究结果表明,提高生产的负荷率、均衡率和合同的完成率,这是柔性生产下平衡物流的目的,也是物流平衡的主要内容;而保持生产线平衡、识别瓶颈资源、编制好生产作业计划、设置缓冲环节则是平衡生产物流行之有效的关键手段和策略。     

达宝易软件在生产线平衡中的应用

从生产线平衡和动作研究的基本概念出发,引入了利用动作研究提高生产线平衡性的方法,并给出了生产线平衡率的通用公式.提出了将达宝易软件应用于动作研究,使用计算机对生产线中的瓶颈工序进行动素分析和优化,从而降低了瓶颈工序的作业时间,提高生产线的平衡性.最后,给出某企业应用达宝易改善生产线的例子,通过动作研究生产线平衡率提高了17%,日产能从100件提高到127件,验证了达宝易软件的效益.     

Mixed model assembly system with multiple secondary feeder lines: layout design and balancing procedure for ATO environment

The constant research for efficiency and flexibility has forced assembly systems to change from simple/single assembly lines to mixed model assembly lines, while the necessity to reduce inventory has led the transition from single to multi-line systems, where some components are assembled in secondary lines, called feeder lines, connected to the main one by a ‘pull philosophy’. A possible approach to configure such an assembly system is to balance the main line first and use the retrieved cycle time to balance each feeder line separately, which is a questionable solution, especially if operators can perform tasks on both the feeder and the main line. Moreover for its complexity the mixed model balancing problem is usually solved transforming it into a single model by creating a single ‘virtual average model’, representative of the whole production mix. The use of a virtual average model assumes that the processing times of some models are higher or lower than the cycle time, which creates overload/idle time at the stations. This approach, especially in complex multi line production systems, largely reduces the assembly line productivity and increases the buffers dimensions. This paper faces the mixed model assembly line balancing problem in the presence of multiple feeder lines, introducing an innovative integrated main-feeder lines balancing procedure in case of unpaced assembly systems. The proposed approach is compared with the classical one and validated through simulation and industrial applications.     

A simulation approach for adapting a production line balancing procedure to a probabilistic environment

Many of the line balancing procedures at present available have several limiting characteristics. First, they often tend to be based on approaches that encompass deterministic operating parameters when, in fact, realistic production systems have probabilistic operating parameters. Secondly, they are often applicable only to small noncomplex production lines. It is the purpose of this paper to demonstrate how Q-GERT network modelling and simulation can be employed to ascertain the effect of these realistic operating conditions on a line balancing procedure. Once such effects have been determined it will be shown how simulation can be used to adapt the line balancing procedure to realistic operating conditions.     

The sequence-dependent assembly line balancing problem

Assembly line balancing problems (ALBP) arise whenever an assembly line is configured, redesigned or adjusted. An ALBP consists of distributing the total workload for manufacturing any unit of the products to be assembled among the work stations along the line. The sequence-dependent assembly line balancing problem (SDALBP) is an extension of the standard simple assembly line balancing problem (SALBP) which has significant relevance in real-world assembly line settings. SDALBP extends the basic problem by considering sequence-dependent task times. In this paper, we define this new problem, formulate several versions of a mixed-integer program, adapt solution approaches for SALBP to SDALBP, generate test data and perform some preliminary computational experiments. As a main result, we find that applying SALBP-based search procedures is very effective, whereas modelling and solving the problem with MIP standard software is not recommendable.     

A cost model for optimal mix of balanced stochastic assembly line and the modular assembly system for a customer oriented production system

A coat model is presented in this paper for balancing a stochastic assembly line where the incompletions on the line are handled on the basis of a modular assembly concept. The model proposed is a modification of the approach by Kottas and Lau and incorporates the provision of task times being greater than the cycle time for a customer oriented production system offering structural variations in the product. The assembly line was simulated using the balance obtained by the proposed model for estimation of in-process-atorage capacity for physical layout and design of the assembly line.     

工作研究在电器产品装配线平衡改善中的应用

针对粗放管理模式下温州企业普遍关注挖掘企业内部潜力,增强企业竞争力的问题,以温州某电器产品的装配生产线为研究对象,在运用程序分析方法规范产品生产工艺流程的基础上,采用秒表时间研究识别了生产线的瓶颈工位,通过工序重排、人员调整以及基于双手作业分析和动作分析的作业方法改进,使得生产线的平衡率提高了31％.     

Improving the equality of workload assignments in assembly lines

Most heuristic and optimal methods for assembly line balancing are designed either to minimize the number of workstations required given a production rate, or to maximize the production rate given a fixed number of workstations. This singular focus on line design efficiency typically results in an imbalanced allocation of tasks among the stations. This paper presents a new procedure that rebalances a given solution to level the allocation of tasks. Characteristics of dominant levelled solutions are identified and incorporated into this heuristic procedure. Computational results indicate that the procedure is very effective in levelling workloads.     

Using Ant Techniques to Solve the Assembly Line Balancing Problem

This paper presents an approach, based on ant techniques, to effectively address the assembly line balancing problem with the complicating factors of parallel workstations, stochastic task durations, and mixed-models. A methodology was inspired by the behavior of social insects in an attempt to distribute tasks among workers so that strategic performance measures are optimized. This methodology is used to address several assembly line balancing problems from the literature. The assembly line layouts obtained from these solutions are used for simulated production runs so that output performance measures (such as cycle time performance) are obtained. Output performance measures resulting from this approach are compared to output performance measures obtained from several other heuristics, such as simulated annealing. A comparison shows that the ant approach is competitive with the other heuristic methods in terms of these performance measures.