Influence of Production Flow Management Methods on an Assembly Line Supplied on Stock

2014 ◽  
Vol 657 ◽  
pp. 971-975 ◽  
Author(s):  
Ana Rotaru ◽  
Alin Gavriluţă ◽  
Eduard Niţu
Keyword(s):  
Performance Indicators ◽  
Assembly Line ◽  
Production Systems ◽  
Assembly Lines ◽  
Production Flow ◽  
Experimental Conditions ◽  
Work In Process ◽  
Average Work ◽  
Method Of Production ◽  
Process Managers

The present paper is a continuation of a larger study of the authors, which consists of an analysis on the performances of several production systems. In this paper it is analyzed the influences of the method of managing the flows, the method of production programing and the clients demand on performance indicators of a multiproduct assembly line supplied on stock. The assembly line is designed to produce two types of similar products and is made of 5 workstations with mainly manual activities, which are supplied with parts on a stock based method. The performance indicators chosen for analysis were: average work in process, cost per unit, systems reactivity to client demand and throughput. The values of these indicators were obtained by simulating the assembly lines functioning in different experimental conditions, determined of the variation of above mentioned variables, by using ARENA software. The obtained results were interpreted and structured, in a manner to help the process managers to take adequate decisions considering the wanted objectives.

The Analysis of Performances of an Assembly Line in Synchronous Supply Managed with Kanban and Conwip Methods

2014 ◽  
Vol 657 ◽  
pp. 966-970 ◽  
Author(s):  
Alin Gavriluţă ◽  
Eduard Niţu ◽  
Ana Rotaru
Keyword(s):  
Performance Indicators ◽  
Assembly Line ◽  
Production Systems ◽  
Production Flow ◽  
Experimental Conditions ◽  
Flow Management ◽  
Work In Process ◽  
Average Work ◽  
Method Of Production ◽  
Process Managers

The present paper is part of a larger study of the authors, which consists in the analysis of performances of several production systems. The researches presented in this paper analyze the influence of the method of production flow management, the method of launching in production and the size of demand from the client on several performance indicators of a multiproduct assembly line supplied on stock. The assembly line is multiproduct type (are assembled 2 types of products that resemble as configuration and technology) and it has 5 workstations with mainly manual activities, that are supplied with parts using a synchronous method. The performance indicators considered were: average work in process, cost per unit, systems reactivity to client demand and throughput, their values being obtained by simulating the functioning of the assembly line in different experimental conditions, determined by the variation of the above mentioned parameters, using ARENA software. The synthesis of the results and their interpretation allow the process managers to take adequate decisions depending on targeted objectives.

The Analysis of Performances of an Assembly Line in Strike-Zone Supply Method Managed with Kanban and Conwip

2015 ◽  
Vol 760 ◽  
pp. 225-230
Author(s):  
Alin Gavriluţă ◽  
Ana Rotaru ◽  
Eduard Niţu
Keyword(s):  
Performance Indicators ◽  
Assembly Line ◽  
Production Systems ◽  
Production Flow ◽  
Experimental Conditions ◽  
Flow Management ◽  
Work In Process ◽  
Average Work ◽  
Method Of Production ◽  
Process Managers

The present paper is part of a larger study of the authors, which consists in the analysis of performances of several production systems. On a multiproduct assembly line supplied in Strike-Zone, are made researches on the influence of the method of production flow management, the method of launching in production and by varying the clients demand size on several performance indicators. The assembly line has mainly manual activities, divided in 5 workstations. The line produces two types of similar products. Using dynamic simulation (Arena software) that mimics the lines functioning mode, different experimental conditions are created, determined by the variation of the above mentioned parameters, following the evolution of the performance indicators: average work in process, cost per unit, systems reactivity to client demand and throughput. The obtained results were interpreted and structured, in a manner to help the process managers to take adequate decisions considering the wanted objectives.

scholarly journals Increasing The Efficiency of The Cub Engine Assembly Lines In The Automotive Industry Using Ranked Positional Weight

2018 ◽  
Vol 218 ◽  
pp. 04028
Author(s):  
Inaki Maulida Hakim ◽  
Syarafi Auzan Mu’min ◽  
Rolina Oktapiani Zaqiah
Keyword(s):  
Production Process ◽  
Automotive Industry ◽  
Manufacturing Industry ◽  
Assembly Line ◽  
Consumer Demand ◽  
Assembly Lines ◽  
Production Flow ◽  
Subsequent Increase ◽  
The Right ◽  
Positional Weight

In this modern era, the competition among the manufacturing industry, especially in the automotive sector will become increasingly tight which causes companies need to innovate so that satisfaction of the consumer can be maintained. The production process will be an important aspect in the automotive industry to maintain the quality of products and ensure consumer demand can be fulfilled. The problems that often occur in the production process is in the form of production flow constraints caused by workload unbalanced in the assembly lines. The imbalance causes the assembly lines do not run in a cycle time that is determined, so that consumer demand can not be meet in the right amount and companies need to spend more to mitigate them. Therefore, this study was conducted to balance workload on the assembly line by using line balancing form Ranked Positional Weight (RPW) with a subsequent increase in the efficiency and productivity of assembly line that affect production process runs without any contraints.

Performance Analysis of a Layout of an Assembly Line Supplied Based on Stock or Synchronous

2013 ◽  
Vol 371 ◽  
pp. 42-47 ◽  
Author(s):  
Eduard Niţu ◽  
Ana Rotaru ◽  
Alin Constantin Gavriluţă
Keyword(s):  
Performance Analysis ◽  
3D Modeling ◽  
Performance Indicators ◽  
Assembly Line ◽  
Production Systems ◽  
Plant Layout

The present paper is part of a broader study of the authors, consisting in the design of production systems layouts. In this paper is studied the influence of the supply method of an assembly line with mostly manual activities, in two hypotheses: mono-product and multi-product, supplied based on stock or synchronous, on its performances. The considered performance indicators are: the space needed for plant layout, the flexibility of the operator and an ergonomic indicator. These had been determined analytically or by 3D modeling of the assembly line. The obtained results show that, although the overall space of the system increases on the synchronous supply, the indicators for flexibility and ergonomics are significantly superior comparing to the ones from the supply based on stock.

MATHEMATICAL MODELS FOR BUFFER SIZING PROBLEMS IN PARALLEL ASSEMBLY LINES WITH MULTI-LINE STATIONS AND DIFFERENT CYCLE TIMES

10.6036/10223 ◽  
2021 ◽  
Vol 96 (6) ◽  
pp. 563-563
Author(s):  
HARRY AGUILAR GAMARRA ◽  
ALBERTO GARCIA VILLORIA ◽  
RAFAEL PASTOR MORENO
Keyword(s):  
Mathematical Models ◽  
Assembly Line ◽  
Production Systems ◽  
Assembly Lines ◽  
Cycle Times ◽  
Buffer Sizing ◽  
Parallel Assembly

In industry there are production systems consisting of more than one assembly line. If these are close together, it is possible for an operator to perform tasks from two adjacent lines assigned to his station (this will be a "multi-line station")

scholarly journals Application of Digitization Procedures of Production in Practice

2019 ◽  
Vol 27 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Erika Sujová ◽  
Helena Čierna ◽  
Iwona Żabińska
Keyword(s):  
Industry 4.0 ◽  
Assembly Line ◽  
Statistical Data ◽  
Production Systems ◽  
Simulation Software ◽  
Assembly Lines ◽  
The Real ◽  
Digital Twin ◽  
Production Processes ◽  
Digital Engineering

AbstractThe paper addresses application of digitazation of production processes, which is part of organizational digitization, also known as Industry 4.0. It deals with modernization and optimization of production systems by creating models in simulation software via digital engineering. For our analysis, 8 real assembly lines were used, with an average of 15 workplaces, which were integrated into one universal line by means of simulation. The aim of our research was to create a digital twin of the real assambly lien and to analyse effectiveness of the proposed modernization universal assembly line using the generated statistical data.

scholarly journals Improvement based on standardized work: an implementation case study

2017 ◽  
Vol 14 (3) ◽  
pp. 388 ◽  
Author(s):  
Julio Cesar Fin ◽  
Gabriel Vidor ◽  
Ivandro Cecconello ◽  
Vanessa De Campos Machado
Keyword(s):  
Assembly Line ◽  
Single Case ◽  
Production Capacity ◽  
Assembly Lines ◽  
Work In Process ◽  
Takt Time ◽  
Minimum Number ◽  
Manual Tasks ◽  
Object Of Study

Standardized work is an effective way for process improvement, specially when it is applied to manual tasks such as assembly lines. This tool is part of Toyota Production System and based on wastes reduction. Thus, the objectives were to implement standardized work in a medium chassis assembly line and measure the benefis from optimization of operators’ tasks and movement through waste reduction. In order to achieve these results, a single case study was performed in a medium chassis assembly line that is part of a company in South Brazil. The steps involved: defining the object of study; time measurement and takt time definition; creating a production capacity sheet; defining the minimum number of operators and balancing the line; determining minimum work in process; defining the new layout; creating a standardized operations sheet and a standardized operations routine sheet; training and implementing standardized work; and verifying the results. Results show 36 minutes reduction in terms of assembly time and 200 meters reduction in terms of operators’ movement on average. Other contributions regard the 9.6% reduction in terms of the assembly line downtime.

scholarly journals Using noisy RFID for accurately monitoring the assembly line of panel fabrication

2017 ◽  
Author(s):  
Y. Wen ◽  
D. Ogunyemi ◽  
A. S. Bouferguene ◽  
M. S. Altaf ◽  
A. Bouferguene ◽  
...  
Keyword(s):  
Automotive Industry ◽  
Assembly Line ◽  
Production Systems ◽  
Waiting Times ◽  
Commercial Buildings ◽  
Project Delivery ◽  
Assembly Lines ◽  
Serial Production ◽  
Intermediate Products ◽  
The Past

Over the past few years, the interest towards off-site construction as part of project delivery for residential and commercial buildings has increased dramatically. In this regard, buildings are decomposed into panels that are manufactured using assembly lines smilar to what was developped to the automotive industry. However, because these serial production systems do not have buffers that could store intermediate products when a bottleneck occurs downstream, it often happens that these products are required to wait at the current workstation before production can resume. In this contribution, we develop algorithms allowing the waiting times to be extracted from timestamps that are collected from an RFID system reading the tags on panels as they enter each workstation.

scholarly journals Chaotic Behavior in a Flexible Assembly Line of a Manufacturing System

2015 ◽  
Vol 5 (6) ◽  
pp. 891-894
Author(s):  
M. Sajid ◽  
F. A. Almufadi ◽  
M. Jahanzaib
Keyword(s):  
Manufacturing System ◽  
Assembly Line ◽  
Chaotic Behavior ◽  
Assembly Lines ◽  
Flexible Assembly ◽  
System A ◽  
Work In Process ◽  
Persistent Data ◽  
Result Analysis ◽  
Flexible Assembly Line

The purpose of the present work is to study the chaotic behavior in a flexible assembly line of a manufacturing system. A flexible assembly line can accommodate a variety of product types. Result analysis is performed to obtain time persistent data. The behavior of the system is observed for Work-In-Process, as assembling systems are sensitive during processing. It is found that the average Lyapunov exponent is positive in the considered case, and thus chaotic behavior may be present in flexible assembly lines.

Kinetic part-feeding models for assembly lines in automotive industries

2014 ◽  
Vol 25 (02) ◽  
pp. 283-308 ◽  
Author(s):  
L. Michailidis ◽  
M. Herty ◽  
M. Ziegler
Keyword(s):  
Partial Differential Equations ◽  
Assembly Line ◽  
Kinetic Equations ◽  
Assembly Lines ◽  
Recent Discussion ◽  
Production Flow ◽  
General Flow ◽  
Production Processes ◽  
Unstructured Networks ◽  
Part Feeding

This paper deals with the modeling of production processes in automotive industries by models based on partial differential equations. The basic idea consists on the derivation of kinetic equations to model production flow on an assembly line. Numerical results based on data of an assembly plant are presented. The work implements a recent discussion for general flow on unstructured networks.

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