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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Användningen av 5S och TPM på en företagskritisk maskinstation inom produktionen / The use of 5S and TPM in a business critical machine station within production

Au-Yeung, Chingying, Andreasson, Emma January 2017 (has links)
The project was performed at Parker Hannifin Cylinder Division at Falköping, where a station in the most critical flow at the production has been studied, which is the hand welding station. Within this report, the purpose is to identify disturbances, in order to eliminate and reduce these by coming up with improvement proposals. Furthermore, the aim is to help improve the company's work with 5S and TPM (Total Productive Maintenance). A combination of tools and concepts are being used in this project when generating improvement proposals to avoid the risk of falling back into old habits and facilitate the work. The combination of concepts, intends to be continued to work with, in order to facilitate for the company to reach even higher results.The methodology of TPM is the basis of the project, although it is not about a complete implementation of TPM, but is limited to chosen parts since it is a time consuming process that can go on for years. The main focus of TPM is about the first pillar, 5S. Action plans for how to solve these problems and how to achieve the desired state has been established.Thereafter, the researchers in cooperation with the company´s staff have implemented a couple of small improvement proposals. Further improvement proposals have also been presented in this report, but due to the limited time no implementations was made.Moreover, this project is divided into a couple of phases. Situational analysis has been made through both interviews with staff and observation studies. Analysis has also been made by some numeric data taken out by researchers and partly through mapping the equipment. The intention of this is to create a status image of the current situation over the hand welding station. The current state has shown the appearance of problems and challenges that exist. Additional wastages and disturbances in the station can come up to the surface and can thus easily be identified. In turn, occurring wastages and disturbances can be eliminated and the amount of wasted time reduced with help of the action plans to reach a future state.Another method that occurs is spaghetti charts. It has been used for mapping up the existing procedures during the process of the orders in the station, and by that identified different types of disturbances. In addition, the creation of a Value Stream Mapping (VSM) has been made. The map is used as a measurement to identify how much time on a working day that is spent as value adding time and non-value adding time of work.
2

Ny verkstadslayout på Westal AB / New workshop layout at Westal AB

Beciri, Lorik, Johnsson, Emil January 2023 (has links)
The following study is a bachelor thesis at Jönköping Institute of Technology in collaboration with the lighting company Westal AB. The company had recently invested in a laser cutter and at the same time acquired the business Ledolight Sweden AB, which manufactures emergency exit luminaires. The problem that formed the basis of the study was that the responsible parties were unsure of how the machines should be positioned regarding proximity and a good working environment. The aimwas therefore to develop two concrete layout proposals for the workshop. Where one layout proposal should provide suggestions for the location of the laser cutter in relation to existing machines. While the layout proposal will provide a proposal on how the machines from Ledolight Sweden AB can be placed on a separate area in the workshop.The study's questions were answered using both quantitative and qualitative methods to obtain information. Value stream analyses, measurements, observations, and interviews are some of the methods used. Based on the chosen methods, it has been possible to describe a current situation at Westal AB and Ledolight Sweden AB. When designing the layout proposals, the collected information was compared to the selected theoretical framework. Subsequently, the "Simplified Systematic Layout Planning" (FSLP) method was used to identify and determine relationships, causes of proximity, space requirements and other needs.The study results in different layout proposals, which show how the machines and functions can be placed in the workshop. A total of three layout proposals have been produced for the laser cutter and two for the machines from Ledolight Sweden AB. Followed by the advantages and disadvantages of the chosen locations. In comparison with the current layout, the new layout proposals have achieved the purpose of creating proximity, creating good working conditions, and placing the machines from Ledolight Sweden AB in a separate area in the workshop. The study also provides a concrete proposal on how two of the layout proposals could be integrated into the workshop. The layout proposal contributes to less material handling as the times for moving materials have been reduced. Material handling has been reduced by 20% for the Stall product group. Regarding the product groups Gustav and LedoNomic material handling has been reduced by 13% and 47% respectively. In connection with the results of the study, the following recommendations have been identified,- Design spaghetti diagrams and eliminate unnecessary movements for all product groups processed in the workshop. - Apply the FSLP method to future layout changes.- Continued work with the Lean mindset and the tool 5S to eliminate waste. / Följande studie är ett examensarbete på Jönköpings tekniska högskola som utförts i samarbete med belysningsföretaget Westal AB. Företaget hade nyligen investerat i en laserskärare och samtidigt köpt upp verksamheten Ledolight Sweden AB som tillverkar nödutgångsarmaturer. Problemet som låg till grund för studien var att det inte fanns någon tydlig bild över hur maskinerna ska placeras med avseende på att skapa närhet och en god arbetsmiljö. Syftet var därmed att ta fram två konkreta layoutförslag över verkstaden. Där ena layoutförslaget ska ge förslag på placeringen av laserskäraren i förhållande till befintliga maskiner. Det andra layoutförslaget skall ge ett förslag på hur maskinerna från Ledolight Sweden AB kan placeras på en separat yta i verkstaden.Studiens frågeställningar har besvarats genom användandet av både kvantitativa och kvalitativa metoder för att inhämta information. Värdeflödesanalyser, mätningar och intervjuer är några av de metoderna som använts. Vid utformandet av layoutförslagen ställdes den inhämtade informationen i relation till det utvalda teoretiska ramverket.Därefter användes metoden ”Förenklad systematisk lokalplanläggning” (FSLP) för att ta fram olika de olika layoutförslagen.Studien resulterar i olika layoutförslag, vilket visar hur maskinerna respektive funktionerna kan placeras i verkstaden. Totalt har tre layoutförslag för laserskäraren tagits fram och två för maskinerna från Ledolight Sweden AB. Följt av fördelar respektive nackdelar med de valda placeringarna. I jämförelse med den nuvarande layouten, har de nya layoutförslagen uppnått syftet med att skapa närhet, skapa goda arbetsförhållanden och placerat maskinerna från Ledolight Sweden AB på en separat yta i verkstaden. Studien ger även ett konkret förslag på hur två av layoutförslagen skulle kunna integreras i verkstaden. Layoutförslaget bidrar till mindre materialhantering då tiderna för förflyttning av material har reducerats. Materialhanteringen har reducerats med 20% för produktgruppen Stall. Gällande produktgrupperna Gustav och LedoNomic materialhantering har det reducerats med 13% respektive 47%. I samband med studiens resultat har följande rekommendationer identifierats.- Utforma spaghettidiagram och eliminera onödiga rörelser för alla produktgrupper som förädlas i verkstaden. - Tillämpa metoden FSLP vid framtida layoutförändringar.- Fortsatt arbete med tankesättet Lean och verktyget 5S för att eliminera slöseriet.

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