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Assembly system design -: Case study of a mixed model production
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Design av monteringssystem - :  Fallstudie av en blandmodellsproduktion (Swedish)
Abstract [en]

The report, which is a part of the course "MG202X Examensarbete", has been written for the institution Industrial Production at the Royal Institute of Technology (KTH) with guidance from Antonio Maffei. The work has been focused on creating an assembly system at a production facility for Schneider Electric in Nyköping. The Authors has divided the report into a literature review containing Lean production and assembly systems, an analysis of the initial state and a solution.

The literature review presents three separate parts which creates the framework of our analysis. The first part regards assembly system and describes different types of design alternatives and which losses that can be found in an assembly system. Furthermore the second part contains Lean production where selected parts of the philosophy are described. The last part of the literature review treats the design of the workstation with regards to ergonomics and part presentation.

The analysis at Schneider Electric has been conducted during a three month period and has included time studies, observations and interviews. To analyze the initial state a model for estimating assembly times and workload were needed. An in depth understanding of the initial state was the foundation to be able to create an adapted and accepted assembly system.

The work resulted in two suggested assembly systems. One system contains only one workstation and was to be used for a simple assembly process. The second system is to be used for more complex products and has a higher capacity as it contains three workstations. As the assembly system contains three separate workstations it means that the assembly process has been divided which were done through a consideration between logical split and balancing of the system. Both systems used a continuous supply system for components.

Abstract [sv]

Rapporten, som är en del av kursen "MG202X Examensarbete", har skrivits för institutionen Industriell Produktion på KTH under handledning av Antonio Maffei. Arbetet har inriktats på att utveckla ett monteringssystem hos Schneider Electrics produktionsanläggning i Nyköping. Författarna har delat upp rapporten mellan en litteraturstudie kring Lean produktion och monteringssystem, en analys av den aktuella situationen och en presentation av lösning.

Litteraturstudien presenterar tre separata delar som bildar ramverket till vår analys. Den första delen är monteringssystem vilket beskriver olika typer av designalternativ samt vilka förluster som finns i ett monteringssystem. Vidare består den andra delen av Lean produktion där utvalda delar av filosofin har beskrivits. Den sista delen av studien behandlar utformandet av den enskilda arbetssituationen med hänsyn till ergonomi och komponentpresentation.

Analysen av situationen hos Schneider Electric har gjorts under en tremånadersperiod inkluderat tidsanalyser, observationer och intervjuer. För att analysera dagens system krävdes en modell för uppskattning av monteringstider och arbetsbelastning. En djupgående förståelse av dagsläget var grunden för att skapa ett anpassat och accepterat monteringssystem.

Arbetet resulterade i två förslag till monteringssystem. Det ena systemet bestod endast av en arbetsstation för enklare monteringsförfarande. Det andra systemet skall användas till mer komplexa produkter och har en högre kapacitet då den består av tre arbetsstationer. Då monteringssystemet består av tre skiljda arbetsstationer innebär detta att monteringsprocessen har delats vilket skedde genom att en avvägning mellan logisk delning och balansering. Båda systemen använde sig av ett kanbansystem för komponenttillförsel.

Place, publisher, year, edition, pages
2012. , 88 p.
Series
Degree Project in Production Engineering, Second Level, 513
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-103276OAI: oai:DiVA.org:kth-103276DiVA: diva2:559508
Subject / course
Production Engineering
Educational program
Master of Science in Engineering - Industrial Engineering and Management
Uppsok
Technology
Examiners
Available from: 2012-10-09 Created: 2012-10-09 Last updated: 2012-10-09Bibliographically approved

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