某减速器装配线平衡的精益改造研究

从装配线平衡和精益生产的概念出发,以某企业减速器装配生产线为实例,介绍了精益生产理论在改造装配线平衡问题上的应用。考虑装配生产现场,用鱼刺图分析了影响装配线平衡的各种制约因素,并系统的应用全员"5S"活动,制定标准作业时间,连续流改造以及团队互助协作等精益手段对原装配生产线进行改造。改造结果显示,装配线各工作站作业负荷趋于均衡,整体生产效率得以提高,改造效果明显。     

空压机装配生产线平衡优化问题研究

本文结合本人负责的空气压缩机装配线实际情况,对其装配线流程的现状进行了剖析,使用了Avix动作分析软件对整个装配过程进行了深入的分析,找出目前装配流程中的存在的各种浪费,把它们作为改善的机会,譬如多余的装配动作、产能瓶颈等各种问题,并逐一作出分析。最后通过生产线流程优化、动作的改善等措施,使得生产线的平衡得到了优化,进一步提高了产能,并为后续的持续改进提供了改善机会分析的基础。     

基于遗传算法对A公司生产线平衡的分析

在对A公司总装车间底盘装配生产线平衡现状进行分析的基础上,应用遗传算法对A公司总装车间底盘装配生产线进行分析改善,使得A公司总装车间底盘生产线瓶颈工序时间得到了有效地降低,生产线平衡率从76.3%提高到95.1%,生产线平衡损失率由原来的23.7%降低到4.9%,提高了生产线的平衡性。     

基于遗传算法对A公司生产线平衡的分析

在对A公司总装车间底盘装配生产线平衡现状进行分析的基础上,应用遗传算法对A公司总装车间底盘装配生产线进行分析改善,使得A公司总装车间底盘生产线瓶颈工序时间得到了有效地降低,生产线平衡率从76.3%提高到95.1%,生产线平衡损失率由原来的23.7%降低到4.9%,提高了生产线的平衡性。     

基于FLEXSIM的某生产线物流仿真优化

通过收集某企业挖掘机装配流水线的工艺路线、工序设备处理率、生产节拍和生产线平衡等方面数据,利用FLEXSIM物流仿真软件构建装配流水线仿真模型,比较装配流水线优化前后指标,发现优化后的装配线具有生产节拍时间缩短、瓶颈工序缓解、生产线产能平衡等优点。     

换装生产线均衡生产探讨

随着某型号空空导弹批产的进行,原有装配车间生产模式由科研状态下的小批量生产方式转向批产后大批量的生产模式,生产模式的转变势必对装配车间生产线的均衡化生产提出更高的要求,如何适应研究院的发展,提高生产线的整体效率,减少工序间的在制品,以及追求同步化生产越来越受到重视。这里通过对装配生产线平衡的研究,结合自身部门产品的特点,对现有生产进行了探讨,说明了现有工业工程技术在生产线平衡改善中的作用。首先叙述了生产线平衡理论、评价方式,及影响线平衡的要素,同时根据工业工程基础理论定义了改善生产线平衡的方式。对于所讨论的某型号空空导弹火工品换装生产流程,针对其平衡率不高的问题,通过分析现状。然后根据生产线平衡的步骤及方法,按照工序节拍均衡的原则,使各工序节拍趋于一致,且将各工序生产准备方式标准化,提出了问题的解决方向。     

基于FLEXSIM的某生产线物流仿真优化

通过收集某企业挖掘机装配流水线的工艺路线、工序设备处理率、生产节拍和生产线平衡等方面数据,利用FLEXSIM物流仿真软件构建装配流水线仿真模型,比较装配流水线优化前后指标,发现优化后的装配线具有生产节拍时间缩短、瓶颈工序缓解、生产线产能平衡等优点.     

汽车零部件企业生产线平衡与分析研究

本文以某公司配线为研究对象,通过对生产线平衡和在线质量控制特点的详细分析,对装配过程中的生产线平衡问题进行分析、改善与研究.     

基于多种群遗传算法的T公司装配生产线平衡问题研究

本文将对T公司光伏逆变器装配生产线平衡问题进行研究,通过建立以生产节拍,生产线平滑指数相结合的多目标优化数学模型,采用在matlab环境下的双种群遗传算法对装配生产线进行优化,以期达到生产节拍尽可能小,工位间负荷均衡,从而提高装配生产线效率,提高产能。     

基于FLEXSIM的电机生产线平衡分析与改善

针对X电机厂总装生产线的生产效率低的问题,分析了电机总装生产线操作流程,结合Flexsim仿真分析,首先识别瓶颈工位,然后采用程序分析、操作分析和联合作业分析的方法改善瓶颈工位,平衡各工位的工作负荷。结果显示,生产线平衡率由49.5%提高到80.30%,生产节拍由40.5s降低为21s,日平均产量由350台提高到677台,仿真结果验证了改善过程的有效性。     

Using Simulation and Data Envelopment Analysis to Compare Assembly Line Balancing Solutions

This paper presents a technique for comparing the results of different assembly line balancing strategies by using Data Envelopment Analysis (DEA). Initially, several heuristics--which can be thought of as assembly line balancing strategies--were used to solve seven line-balancing problems. The resulting line balance solutions provided two pieces of information that were of particular interest: the number of workers needed and the amount of equipment needed. These two items were considered inputs for DEA. The different line balance solutions were then used as layouts for simulated production runs. From the simulation experiments, several output performance measures were obtained which were of particular interest and were used as outputs for DEA. The analysis shows that DEA is effective in suggesting which line balancing heuristics are most promising.     

电动三轮车装配流水线的平衡分析与改进

在生产线平衡原理及改善方法的基础上,以电动三轮车装配流水线为研究对象,运用工作研究的方法分析工艺流程,测定流水线各工位的作业时间,找出瓶颈工位;运用"5W1H"提问技术和ECRS(取消、合并、重排、简化)原则对流水线进行分析与改进。通过对比分析,改进后该流水线大大节省了空间和人力,工位减少6个,工人减少11个,与此同时,平衡率提高27.6%。     

基于时间和成本的加工装配线物流平衡方法

本文提出一种基于时间和成本的加工装配线上物流的规划方法，在对现有的生产装配线重新分配工件的同时保证最大效益的改善，执行花费／效益分析，同时该平衡方法借助于数据库和电子表格的联合应用，可以在短时间内完成。文中以哈锅阀门股份有限公司生产线的改造为例，详细介绍了该方法的使用。计算结果表明，这种物流平衡方法提供了企业一种效率高，费用低的现有加工装配线改造方法。     

服装缝纫流水线的负荷优化编排

提出一种服装缝纫流水线负荷平衡的编排方法。利用工序分析表,得到各个工序的工作时间、所使用的机械种类以及各个工序之间加工的优先逻辑关系。建立相应的数学模型,依据数学模型编辑相应程序。利用线性规划软件Lingo求解,得到最优化的工位数、生产节拍以及各个工序之间的编组。     

工作研究在按摩椅组件装配方法改善中的应用

基于工作研究的原理和方法,对某健康产品有限公司按摩椅组件的装配方法进行了分析改善。首先对按摩椅组件的装配过程进行了流程程序分析,运用5W1H和ECRS方法,通过流程化改善减少了装配过程中的搬运和等待;其次对按摩椅组件的装配过程关键瓶颈工序进行了双手作业分析,通过合理摆放工具和物料,消除了作业浪费。通过对按摩椅组件装配过程的两次改善,装配产能提升了26.7%,单个工人的效率提高了42.9%。     

A cost evaluation method for dynamic line balancing

A procedure is presented for calculating stochastic costs, which include operator (labor) and inventory costs, associated with dynamic line balancing. Dynamic line balancing, unlike the traditional methods of assembly and production line balancing, assigns operators to one or more operations, where each operation has a predetermined processing time and is defined as a group of identical parallel stations. Operator costs and inventory costs are stochastic because they are functions of the assignment process employed in balancing the line, which may vary throughout the balancing period, and the required flow rate. Earlier studies focused on the calculation of the required number of stations and demonstrated why the initial and final inventories at the different operations are balanced.The cost minimization method developed in the article can be used to evaluate and compare the assignment of operators to stations for various assignment heuristics. Operator costs and inventory costs are the components of the cost function. The operator costs are based on the operations to which operators are assigned and are calculated for the entire work week regardless of whether an operator is given only a partial assignment which results in idle time. It is assumed that there is no variation in station speeds, no learning curve effect for operators' performance times, and no limit on the number of operators available for assignment. The costs associated with work-in-process inventories are computed on a “value added” basis. There is no charge for finished goods inventory after the last operation or raw material before the first operation.The conditions which must be examined before using the cost evaluation method are yield, input requirements, operator requirements, scheduling requirements and output requirements. Yield reflects the output of good units at any operation. The input requirement accounts for units discarded or in need of reworking. The operator requirements define the calculation of operator-hours per hour, set the minimum number of operators at an operation, and require that the work is completed. The scheduling requirements ensure that operators are either working or idle at all times, and that no operator is assigned to more than one operation at any time. The calculation of the output reflects the yield, station speed, and work assignments at the last operation on the line.An application of the cost evaluation method is discussed in the final section of the article. Using a simple heuristic to assign operators, the conditions for yield, inputs, operators, scheduling, and output are satisfied. The costs are then calculated for operators and inventories.In conclusion, the cost evaluation method for dynamic balancing enables a manager to compare the costs of assigning operators to work stations. Using this method to calculate the operator and inventory costs, a number of different heuristics for assigning operators in dynamic balancing can be evaluated and compared for various configurations of the production line. The least cost solution procedure then can be applied to a real manufacturing situation with similar characteristics.     

产品拆卸线的影响因素及平衡问题研究

制造企业对废旧产品进行回收再利用,是节约资源和保护环境的有效方式。产品拆卸是实现废旧产品回收再利用的重要手段,是实现产品生命周期完整性与封闭性的必要环节。本文详尽分析了产品拆卸线的影响因素,并将产品拆卸线与产品装配线作了对比;然后针对产品拆卸线的平衡问题,构建了多目标优化模型。     

中国重汽整车装配车间物料超市物料供给系统的优化

文中以生产实际应用为导向,以准时制为研究方向,以混流装配线物料供应设计为突破口,以中国重汽集团济南整车装配车间为研究对象,以完善其混流装配线物料供应体系为目的,进行深入分析混流生产供给特征,完善和优化中国重汽集团济南整车装配车间混流装配线物料供应体系,并对优化策略的应用效果进行理论检验。     

基于DELMIA的汽车装配线建模与仿真

汽车装配线直接决定了汽车生产的效率,因此,对汽车装配线进行建模与仿真,优化装配流程十分必要。基于DELMIA的DPM(Digital Process for Manufacturing)模块,对汽车装配线的装配序列规划、装配干涉以及装配路径规划进行研究,按规划的工艺流程对总装线进行模拟仿真,分析装配线的平衡率,通过仿真结果验证该装配线的可达性、可行性以及装配线的人因工效性。文中研究工作对优化及改善汽车装配过程,缩短工艺规划时间,实现汽车装配线的流水化具有一定指导意义和应用价值。