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.

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.

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.

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.

Research and Design of SWET Equipment for Engineering Machinery Company

2014 ◽  
Vol 971-973 ◽  
pp. 646-649
Author(s):  
Qing Song Zhao
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Work Environment ◽  
Simulation Training ◽  
Assembly Line ◽  
Training System ◽  
Assembly Lines ◽  
Structural Framework ◽  
Research And Design ◽  
Disassembly Line

The structural framework for the car’s assembly line simulation training system of the SWET(Simulated Work Environment Training) is designed overall, including two automatic car assembly lines and two manually run the disassembly line. The automatic control system of the car’s assembly line simulation training system is designed with the knowledge of electrical and electronic, SCM principles, counts the number of the car, automatically pause and open the line with alarm and automatic recovery control.

Variation Analysis for Compliant Assembly

2000 ◽  
Author(s):  
S. Jack Hu ◽  
Yufeng Long ◽  
Jaime Camelio
Keyword(s):  
Sheet Metal ◽  
Assembly Line ◽  
Assembly Process ◽  
Variation Analysis ◽  
Assembly Lines ◽  
Compliant Assembly ◽  
Single Station ◽  
Dimensional Variation ◽  
Sheet Metal Assembly

Abstract Assembly processes for compliant non-rigid parts are widely used in manufacturing automobiles, furniture, and electronic appliances. One of the major issues in the sheet metal assembly process is to control the dimensional variation of assemblies throughout the assembly line. This paper provides an overview of the recent development in variation analysis for compliant assembly. First, the unique characteristics of compliant assemblies are discussed. Then, various approaches to variation modeling for compliant assemblies are presented for single station and multi-station assembly lines. Finally, examples are given to demonstrate the applications of compliant assembly variation models.

scholarly journals Bucket Brigades to Increase Productivity in a Luxury Assembly Line

10.5772/56837 ◽  
2013 ◽  
Vol 5 ◽  
pp. 28 ◽  
Author(s):  
Filippo De Carlo ◽  
Orlando Borgia ◽  
Mario Tucci
Keyword(s):  
Assembly Line ◽  
Assembly Line Balancing ◽  
Assembly Lines ◽  
Manual Assembly ◽  
Increase Productivity ◽  
Assembly Line Balancing Problem ◽  
High Level ◽  
Simple Assembly ◽  
A Company ◽  
Bucket Brigades

One of the most challenging issues in manual assembly lines is to achieve the best balance of workloads. There are many analytic approaches to solve this problem, but they are often neglected, since they are time-consuming and require high level engineering skills. Fashion bags packaging lines must comply with a number of different products with low production volumes, while the organization of the line is often under the mere responsibility of the foreman, who balances workloads in an empirical way. The aim of this work is to evaluate the effectiveness of the arrangement of bucket brigades (BBs) for an assembly line of luxury handbags. To do this, it was decided to perform a testing activity in a company producing fashion handbags in order to compare the self-made design with the BBs and with a simple assembly line balancing problem algorithm. The originality of this research lies in the fact that there are no studies in the literature on BBs applied to the packaging of highly variable small batches. The results were excellent, showing the advantages of BBs in terms of flexibility, the reduction of work in the process and the ability to handle small anomalies.

scholarly journals Study on Importance of Employee Performance Assesment and Lost Productive Time Rate Determination in Garment Assembly Lines

2017 ◽  
Vol 25 (0) ◽  
pp. 119-126 ◽  
Author(s):  
Mahmut Kayar ◽  
Öykü Ceren Bulur
Keyword(s):  
Performance Assessment ◽  
Assembly Line ◽  
Employee Performance ◽  
Assembly Line Balancing ◽  
Line Balancing ◽  
Assembly Lines ◽  
Standard Time ◽  
Productive Time ◽  
Production Target

This study primarily includes theoretical information on the performance and lost productive time of a firm. Furthermore t-shirt sewing operations of a garment firm were analysed and time measurement for each operation was carried out by the time keeping method. By considering the measurements obtained, different performance estimations, the firm’s lost productive time rates, and the standard time was calculated within 5 different scenarios. According to each sewing standard time obtained, the assembly line balancing practice was carried out using the Hoffman method. Later on results of the assembly line balancing were compared, and the importance of employee performance assessment and its lost productive time rates for firms were discussed. The aim of the study was to emphasize the value of impeccable determination of the employee performance assessment and lost productive time rates. Consequently garment firms will be more cautious in calculating the standard time and will be able to reach their production target within the accurate measurement they obtain.

Design methodology for a hybrid part feeding system in lean-based assembly lines

2017 ◽  
Vol 37 (1) ◽  
pp. 84-102 ◽  
Author(s):  
Saliha Karadayi Usta ◽  
Mehmet Kursat Oksuz ◽  
Mehmet Bulent Durmusoglu
Keyword(s):  
Design Methodology ◽  
Mixed Model ◽  
Transportation Cost ◽  
Decision Makers ◽  
Feeding System ◽  
Activity Based Costing ◽  
Assembly Lines ◽  
Content Type ◽  
Time Changes ◽  
Part Feeding

Purpose This paper aims to propose a combined methodology to help decision makers in evaluating and selecting the most effective part feeding system. Design/methodology/approach As a first step of the methodology, a hierarchical clustering analysis is applied to design a kitting or hybrid feeding system. Second, activity-based costing methodology is applied to determine which system is better according to their costs. Besides, sensitivity analysis is implemented to observe the behavior of the system in case of the takt time changes. Findings Using kitting systems purely can lead to problems because of the big and expensive parts in the mixed-model assembly systems. Therefore, the hybrid feeding policy can provide better solutions for such systems. Research limitations/implications A case study is conducted in a company and the most produced product of the company is considered to design the part feeding system. Results indicated that transportation cost has a large proportion on the total cost and the hybrid feeding policy may be a good solution to reduce this cost. Practical implications The paper includes implications for the design of hybrid feeding systems in lean-based assembly lines. The proposed methodology may be a practical tool for decision makers to design and decide on the part feeding policy. Originality/value Kitting design has not been studied yet to the best of the authors’ knowledge. Besides, there is no certain decision methodology indicating which system is better. In this study, different methods are combined as a new methodology with the purpose of industrial decision-making.

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