Tesis sobre el tema "Produktionslina"
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Barzenji, Swara y Anders Västfält. "Utveckling av produktionslina". Thesis, Jönköping University, JTH, Mechanical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-9139.
Texto completoThe company is currently in a stage of improvement and has therefore taken the help of students at School of Engineering, Jonkoping University. The current production is batch, production layout is fixed. A bottleneck is created after the first station which leads to large efficiency loss.
The meaning of this report was to provide a layout suggestion with balanced workstations to a new production line. The conditions were that the production line would be one-way, driven by customers order and meet a demand of 40 products per week.
In order to achieve a result, different methods and tools have been used, these have been time studies, video recording, case studies and interviews with assemblers and supervisor. Theoretical background has been helpful for the choice of methods and work implementation.
The result of this work was a series of solutions based on the company’s strategy and the methods that has been used. Solution A uses three stations with the idea to create a suction through the flow and smooth line balancing. Solution B also had three stations with the basic concept to be able to adjust the number of stations. The number of stations can be selected when the demand change between two, three or six stations. The last Solution C meaning was to create a production line where the operations of the same character had their own place. This solution has five stations, creating a large efficiency loss.
The conclusion is that Layout proposal B is best for the company. This is because it is the most flexible proposal when it is possible to adapt to a demand from 20- 100 products /week. Proposal for methods development and opportunities for improvement in production can be found in the conclusion and discussion.
Nygren, Joel. "Flödesoptimering i produktionslina". Thesis, Uppsala universitet, Industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-432905.
Texto completoBogazkaya, Özgur. "Flödeseffektivisering : Produktionslina 1, Galderma Uppsala". Thesis, Uppsala universitet, Industriell teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354090.
Texto completoDet här examensarbetet ligger till grund för en utredning gällande flödeseffektivisering på produktionslina 1 hos företaget Galderma i Uppsala under våren 2018. Företaget är i stort behov av att effektivisera sin produktion för att möta den ökade efterfrågan som finns på marknaden. Det gör att Galderma behöver kartlägga delar av sin produktion för att hitta områden där tidsvinster kan göras, samt identifiera förbättringsförslag som kan höja personalens arbetssituation med avseende på ergonomi.Utredningen började med en kartläggning av processen ute på produktionslinan. Detta utfördes tillsammans med verksam personal. Av de identifierade förbättringarna och förbättringsförslagen som sedan utvärderades ansågs vissa av dem mer relevanta att utveckla vidare. Två nya förbättrade delar tillverkades i verkstan för att underlätta handhavandet av lockmärkaren samt vid avräkningen. Den första delen var till magasinet på lockmärkaren, för att göra det möjligt att se igenom och hålla koll på magasinets nivå. Den andra delen till avräkningen gjordes även i ett mycket lättare material för enklare hantering samt för att få bort momentet när mallarna behövdes tas bort för att se om den tillhörande lådan var tom.Det effektiviseringsförslag som föreslogs skulle öka den nuvarande flaskhalsens kapacitet med över 100 %, från 12 enheter/min till 27 enheter/min per förslutningsmaskin. Effektiviseringen gick ut på att föreslå ett ändrat arbetssätt kring maskinen för att nå ner till maskinens drifthastighet. Onödiga moment flyttades till senare delar i processen samt så ska material förberedas utanför drifttiden. Detta blir möjligt när man tillför två extra operatörer vid flaskhalsen.
Elmgren, Oskar y Ted Daltin. "Vattenskärning av gummiprodukter - en ny produktionslina". Thesis, Högskolan i Halmstad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44942.
Texto completoVårt examensarbete är en förstudie åt HGF - AB Halmstad Gummifabrik där målet är att ta fram den mest optimala vattenskärningsmaskinen för deras produktion, som sedan ska placeras i en produktionslina. HGF vattenskär i dagsläget inget själva men undersöker nu möjligheten att utöka sin produktion och försäljning där tillverkningstekniken är vattenskärning. Genom förstudier samt analyser i form av driftkostnader, utformning samt miljöpåverkan av marknadens tillgängliga maskiner kommer HGF få en överblick på vilken maskin som passar dem bäst för deras produktion. De första testerna gjordes på FabLab i Halmstad Högskola, men gruppen insåg att mer realistiska maskintester behövdes. Water Jet Sweden AB (WJS), är ett ledande företag inom tillverkning av vattenskärningsmaskiner kontaktades där gruppen medverkade digitalt, här gjordes mer detaljerade tester på gummiprodukterna för att se vad som är lämpligt för industriproduktion. Projektgruppen presenterade olika maskinella förslag och produktionslayout som måste uppfylla de krav som ställts från HGF. Resultatet av vald maskin togs fram utifrån förstudier, intervjuer och observationer, därefter påbörjades förslag för utformning av en produktionslina med avseende på Lean Production. Avslutningsvis tas diskussioner upp angående vattenskärningsmaskinens inverkan på sociala, ekonomiska och miljömässiga aspekter. Med hjälp av vår förstudie kan HGF själva ta beslut om en investering av vattenskärningsmaskin är lämplig för att utöka deras produktion.
Rahma, Yahya y Michael Cankalp. "Rengöringsmaskin av produktionslina : Rengöring av band i produktion". Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-23221.
Texto completoProjektet utfördes tillsammans med SwedSafe AB, som sysslar med hörselskydd och tillverkning av öronproppar. Eftersom att företaget är världsledande inom försäljning av dessa produkter är det viktigt att de håller en högre grad av kvalitet på dessa produkter. Tillverkning av öronproppar sker i dagsläget av en automatisk tillverkningsprocess som är delad till fyra transportband och ett av transportbanden är det som kommer beröras i projektet. Bandet som påverkas under den här processen utsätts till olika moment så som påfyllning, stängning, jäsning och uppsugning av produkter. Det bidrar till att bandet blir smutsigt, produkterna försämras och arbetsmiljön påverkas. För att öka kvalitén på produkter och förbättra arbetsmiljön krävs en automatisk rengöringsprocess som samlar upp smuts från bandet. Syftet med projektet vara att konstruera en maskin som hindrar transportbandet ifrån att bli smutsigt, bevara gjutformer rena och förbättra arbetsmiljön utan att störa produktionen. Projektet skall även dokumenteras för vidare utveckling av maskinen för att kunna använda den på andra transportband. Under arbetsgång användes Fredy Olssons Principkonstruktion, Primärkonstruktion och Tillverkningsmetod, för att konsturera maskinen. Även Catia V5 för sammanställning av maskinen i 3D samt ritningar och Pay-off metod för ekonomi beräkning. Målet med projektet vara att drivningen av maskinen och underhållning ska vara låga samt att förbättre produkternas kvalitet.
Hyldéen, Jonathan. "Optimering av produktionslina på tillverkande enhet i Sverige". Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413373.
Texto completoThe purpose of this study is to deliver a proposition on how a Swedish manufacturing company can improve its’ capacity, flow and flexibility in a manual production line. The production floor is crowded as a result of large quantities of articles adjacent to the production line. The production line has five workstations, three bottlenecks and has a high number of WIP (Work-In-Progress). The study collects data to assess the situation, the production lines performance and how the current layout is planned. To measure the current situation the study collects data through observations, a process tour, informal interviews and conducts its own measurements. The collected data is analysed using theories and methods from lean, TOC (Theory of Constrains), line balancing and production management. The study is approaching the problems using 5s to systematically achieve pervading cleanness in the workplace and a standardisation of the refilling- and prognostication process. The study finds that to increase the capacity of the production line, the staffing can be increased. Using this as a standing point, the study proposes a new production layout that allows two extra employees to work on the production line. This is achieved by creating two additional workstations in the production line. Changing the number of stations from five to seven and allowing two extra employees to work in the production line. This layout change also eliminates two smaller bottlenecks in the production flow. Furthermore, the propositions suggest a new routine for the refilling- and prognostication process that determines how many articles to store within the production floor. Lastly the proposition suggests that the now single bottleneck in the production flow decides the production rate. Making the production line a pulling system set by the demand of the bottleneck, rather than a system set by general assets. This also includes that the production line is going to start producing safety stock of completed products, this safety stock will continuously be replaced to prevent the products from passing expiration date. The remaining majority of the production should only be done by customer order, rather than producing to store complete products. In order to implement the proposition, the organization need to educate itself and its employees, both management and workers need to understand the concepts the proposition uses and why the concepts are used in order for the implementation to be successful.
Sekretess
Ekvall, Désirée y Mohammad Idress. "Identifiering av förbättringssteg för en produktionslina med händelsestyrd simulering". Thesis, Uppsala universitet, Industriell teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-359262.
Texto completoOttosson, Trygg Linus. "Översyn av säkerhet och ergnomi : Produktionslina 3, Galderma Uppsala". Thesis, Uppsala universitet, Industriell teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326018.
Texto completoDetta examensarbete ligger till grund för en utredning gällande säkerhet och ergonomi som gjorts på produktionslina 3 hos företaget Galderma i Uppsala under våren 2017. Utredningen började med en kartläggning av brister på produktionslinan.Detta utfördes tillsammans med verksam personal. Av de totalt 19 identifierade bristerna som sedan utvärderades ansågs vissa av dem mer relevanta att utreda och senare eventuellt åtgärda. Två större brister prioriterades i första hand. Den ena innebar en förstudie om robotimplementering i det fall produktionen skulle behöva automatiseras ytterligare och dåundvika ett icke ergonomiskt arbetsmoment som identifierats. Den andra var att utreda om en ombyggnation av befintlig maskinutrustning skulle kunna möjliggöra passage till en blockerad nödutgång. De andra lägre prioriterade bristerna var av sådan karaktär att de kunde åtgärdas med hjälp av mindre ombyggnationer och modifieringar, eller inköp av utrustning i form utav ergonomiska hjälpmedel. Förstudiengav resultatet att ytan som fanns tillgänglig för en implementering av robotar var ungefär 4,1 x 3,4 meter med en layout för en 6-axlig robot, eller cobot med andra säkerhetskrav. Autoklavvagnarna som robotarna var tänkta att plocka produkt ur var ur vissa avseenden i lämpligt skick för en implementering, men detta bör utredas ytterligare. Ombyggnationen för att möjliggöra passage till nödutgång började med konceptgenrering och undersökningar som ledde fram till ett förslag kunde tas fram tillsammans medleverantören om att installera en spiraltransportbana. Budgetoffert erhölls och vidare ansvar lämnades över till Galderma. Överlag ökade säkerheten och ergonomin på produktionslinan, men vissa åtgärder var vid examensarbetes slut inte färdigställda.
Magnusson, Anton y Arnesson Jonathan. "Utveckla underlag för förbättringar och öka tillgängligheten för en produktionslina". Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-65914.
Texto completoGrönberg, Christoffer. "Simulering och cykeltidsberäkning av automatiserad produktionslina med hjälp av Process Simulate". Thesis, Högskolan Väst, Institutionen för ingenjörsvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-2806.
Texto completoThis thesis has been carried out in collaboration with Löfqvist Engineering in Örebro. The task has been to perform a simulation of a large automation line, to be used in the manufacture of exhaust systems for trucks. Based on this simulation accurate cycle times for production are determined. These times can then be used by Löfqvist Engineering to verify the earlier estimated times. The work includes a literature review of Lean Production and how it works with automation. There is also some background information on Just In Time, different file formats and robot simulation in general for the reader to get a bit more background knowledge of the subject. The program that has been selected to perform the simulation is Tecnomatix Process Simulate and its built in Line Simulation module. The automation line consists of four handling robots, 13 operator stations and eight identical welding cells. Cycle times for the automation line have been determined and the result was 6 min 31s, for the automation line to complete one product. Cycle times were determined by calculating the average time to produce 10 pieces of products when the line was full of material. The report describes how the work for arriving at these cycle times have been performed and how simulation problems encountered during such operations have been resolved.
Bergvall, Andreas, William Ekström y Max Wiklund-Hellstadius. "Effektivisering av en produktionslina med avstamp i Lean verktyg och metoder". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-25594.
Texto completoThe following case study has been carried out at a medium sized corporation that aims to improve capacity and efficiency within one of their two production lines. The production line has been observed to expose its problems and to get an answer to why the organisation can not reach its capacity targets. The production line and production processes have been analysed and with the basis of Lean tools and methods, suggestions on how to improve the production line has been proposed. During the observation of the production line it was noted that unplanned stops, long setup times and long throughput time were the reasons as to why the capacity targets have not been reached. By implementing Lean tools and methods such as standardised working methods, 5s, SMED, Visual Control, Pullsystem and PDCA the company can simplify and clarify its production processes to minimize misunderstandings, simple mistakes and unplanned stops. Concurrently, setup times can be reduced by converting internal activities to external and by documenting and standardizing the setup working procedures. The throughput time can be reduced by implementing a Pull and Two-bin system. This system helps with reducing work in process products, inventory, and internal transportations as well as contributing to the throughput time consisting of more value adding time and less non value adding time.
Svensson, Tobias y Malin Schmidt. "Den dolda kapaciteten : Identifiering och grundorsaksanalys av potentiell kapacitet i en produktionslina". Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40849.
Texto completoMost manufacturing companies are run with the purpose of making money. The profit can be created in two ways. On one hand through the difference between the earnings and the expense and on the other hand through the number of products that are sold within a certain time period. As demand increases a company can ramp up their production but this can come at a loss of the need to do big investments through machines, production lines, personnel and buildings which increases the risk of lowering the profit per product. Kabe, in Tenhult, is today producing two different kinds of RVs, on the one hand semi- integrated which are basically a house of the back of a truck and on the other hand fully integrated where you build a vehicle on top of an empty chassis. The big difference in the amount of work needed in assembling has led to Kabe deciding to separate the two different kinds of RVs in their own assembly lines in the RV factory. To be able to fit these lines in the building the manufacturing of certain big components, that is roofs, walls and floors, have been moved to a separate building and the work then commenced in trying to balance the assembly lines. Kabe is growing in their field and is expected to have an increase in sales in the coming years but the manufacturing of big components, which is now located in the component factory, has fallen behind when it comes to capacity evaluation leading to Kabe not knowing if the component factory is going to be able to keep up when the production speed is increased. To get a number on the potential capacity in the component factory a work sampling study is performed where different non-value adding activities are identified. These are eventually supposed to be eliminated or, in the case of them being necessary but non-value adding activities, reduced. A 5 Whys-analysis is performed with input from operators and leaders to be able to identify the root causes of the different activities and different suggestions of action are then presented as a guide towards the right direction to be able to uncover this “hidden” capacity. The result of the work sampling study suggests that the component factory is utilized to about 50 % at the moment which gives it a potential capacity of almost double of today’s capacity. Underlying causes for this primarily depend on the milling machine, imbalance between different serial stations, problems with operator planning due to the everchanging demand from the customer on the assembly lines as well as that the company has put in more resources and done changes without documenting or planning the effects that this will have on the company in the long run but there are possible solutions to all of this.
Karlsson, Julia y Lovisa Malmehed. "Utformning och linjebalansering av framtida produktionslina - En studie hos HTC Sweden AB". Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160087.
Texto completoNorin, Lindgren Anna-Karin. "Effekt och konsekvenser av en gemensam produktionslina inom slutmonteringen på Atlas Copco Kalmar :". Thesis, KTH, Industriell produktion, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102793.
Texto completoAtlas Copco Construction Tools AB, manufacturer of handheld pneumatic, hydraulic and petrol drills and breakers is placed in Kalmar, Sweden. These three groups of products have its final assembly located in separate areas but in the same workshop, V2. In current situation a lot of time and effort are placed on the movement of products and employees because the workshop´s layout is not optimally planned. Futhermore, products are assembled in batches which make it harder to follow variance in incoming order. Batches also create wastes in form of waiting. Another serious problem is missing components due to delays from suppliers. The assignment was to investigate the consequences of a one-piece-flow with a calculated mix of products in the final assembly and which balance delay such layout would develop. Based on available operation lists a process matrix has been established and the variants within the product groups have been subsequently divided into eleven sub-assemblies. A time study has been conducted to these eleven product groups in order to, along with a desired tact time, balance the flow within the stations. Some layout flow diagrams have also been conducted to visualize waste and possible improvements in the product flow. One conclusion easy to be drawn from the results of the time study and calculated balance delays is that a one-piece-flow with a mix of products is not preferable in this case. Nor would three separate lines be beneficial because the work content within the eleven product groups vary too much. Surprisingly, according to the time study it was not the petrol machines that had the longest lead time, which was the general opinion, but a group of hydraulic breakers. A comparison between total throughput and the percentage of sales within the three main product groups showed that the product with highest percentage of sale also had the longest lead time. A clear indication of where the focus of process improvement should be. During the work with this thesis, a decision has been taken within the company to move the assembly of pneumatic breakers to India. Therefore the effect of having hydraulic and petrol drills and breakers on the same line has also been investigated. Even this alternative showed not to be beneficial why a conclusion could be made that that product lead times need to be adjusted, for example with the method continuous improvements.
Börjesson, Sara y Kim Fogelström. "Framtagning avproduktivitetshöjande åtgärder på produktionslina Scania : Utvärdering samt rekommendationer baseratpå produktivitetsmått och nulägesanalys". Thesis, KTH, Industriell produktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278154.
Texto completoThe camshaft is a mechanically rotating component found in most engines and manufacturedat one of the lines at Scania Södertälje. Scania highly values productivity and despite some of the better results the Camshaft-line still does not live up to the productivity goals of the company. The purpose of this thesis project was to evaluate why that is and to bring forth suggestions of how higher productivity can be achieved. Integral to the work were the three productivity measures OPE, OEE and JPH. The first two measure the productivity of the line against its capacity while the latter measures said capacity. Actions were also taken to ensure that the Scania Production System guidelines were followed and tools such as Lean and Value Stream Mapping were used to help guide the work. The current software for logging stops was also analysed and discussed in relation to the new system currently undergoing implementation, EBBA. The three productivity measures OPE, OEE and JPH were calculated for the last twelve months. The information received from this was then supplemented with workshop practice, a literature study as well as interviews with Scania employees. All data was compiled and discussed in relation to its effect on productivity. The result was three clear conclusions. More production time than necessary is planned, resulting in low utilization. Many of the day to day standards are not sufficient or respected, resulting in difficulties in analysis and lower productivity. Also, the new system will simplify logging of stops assuming clear standards are set up for how this is to be used. Finally recommendations are made that the planning capacity is increased, that the standards are reworked and efforts are made to ensure the new system is used to its full potential. It is also suggested that further work is done by redoing the analysis after implementation of the new system as well as if the planning capacity is increased.
Andersson, Amanda y Lakhsmi Kjellström. "Produktionsplanering vid förändring av en del i en produktionslina : En fallstudie i en säsongsbaserad tillverkning". Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-95330.
Texto completoA season based production may lead to difficulties for companies to fulfill customer demand and to keep stocks to a minimum. Changing the production can lead to a higher productivity and capacity, meanwhile it may limit flexibility. A gradual automation makes it possible to interact different processes and to make a stable production. The purpose of this project is to gain an understanding of how a changed part of a production line affects the production flow, with changed capacity and machine equipment taken into account. The goal is to create a model that enables production planning in a flow where empirical data is not available. To answer the purpose, questions of the issue were created with a focus on how a production plan can be done with only empirical theoretical data, how flows can be combined and finally how factors affect the buffers and lead time. By combining theories of lean production and inventory, a mathematical model could be created. The result was a model that with the help of known variables could figure out unknown and thereby create a mathematical production plan. The conclusion shows that it is possible to create a production plan based on empirical theoretical data, and that the model can be applied to other industries as well because of its customizability.
Bardh, Nicklas y Rickard Abelsson. "Identifikation av produktionsstörningar och obalanser vid tillverkning av golvskenor". Thesis, Jönköping University, JTH, Industrial Engineering and Management, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-408.
Texto completoOur report procedure identification of instability and disturbance in an automatic manufacturing line of processing and assembling of chair sliding rails at Sapas manufacturing department in Vetlanda.
To obtain a stabile ground we have mapped the material flow to receive a comprehensive view and to visualise connections.
We have examined cycle times at different stations in purpose to identificate bottlenecks. The result of our examination showed that the bottleneck of the line was the brush station. This leads to that the expected bottlenecks identificated by Sapa gets a delay time and by that a longer cycle time.
Interruptions has a clear negative influence at the line performance so we have also assemble data through the operators report list and compiled these in order to find out the interruptions effect on the line. The outcome during our assembled period was that the reported interruptions corresponded about 30 percent of the total available production time. This has a clear negative effect on the line productivity and efficiency as we have calculated in order to get the present status.
Pettersson, Maria y Maja Truedsson. "Hantering av variation i en tillverkningsprocess". Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53471.
Texto completoAndersson, Amanda y Frida Jönsson. "Effektivisering av produktion på producerande företag. : Fallstudie på Eksjöhus AB". Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54194.
Texto completoOberer, Rasmus y Tobias Hedlund. "Linjebalansering vid Kabe AB:s husvagnsfabrik i Tenhult : En modell för ett taktat flöde av en förmontering". Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40882.
Texto completoJohansson, Henrik y Torbjörn Olsson. "Konceptutveckling av del i produktionslinje". Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1611.
Texto completoExamensarbetet utfördes i samarbete med Randek Bautech och hade som syfte att utveckla ett koncept, vilket skulle möjliggöra en sammanslagning av två stationer i deras produktionslinje som för övrigt är deras huvudprodukt. Dessa linjer används främst för tillverkningen av vägg- och takelement. Konceptet skulle även innebära en minskning av cykeltiden för spikstationen.
För att få en inblick i hur tillverkningsgången fungerade i nuläget har observationer och intervjuer utförts. Nulägesanalysen har sedan kompletterat de krav och önskemål som företaget hade till att bilda en kravspecifikation. Vidare har författarna använt sig av benchmarking för att få insikt i den senaste tekniken och utvecklingen inom olika branscher, det tillsammans med brainstorming har genererat ett antal möjliga koncept som utvärderats av författarna och handledaren på företaget. För att sedan nå en slutgiltig lösning har viktning utförts mellan de utvalda koncepten. Det slutgiltiga konceptet visualiserades och simulerades därefter i Catia V5. I den mer specificerande delen har även en del förslag lagts på vilken typ av drivning konceptet skulle kunna använda sig av.
Projektet har resulterat i ett slutgiltigt koncept som upptar halva ytan gentemot de gamla stationerna, cykeltiden har också förbättrats då den nya spikar en 1200 mm bred gipsskiva på 30 sekunder och den gamla spikar en motsvarande på 50 sekunder.
Ingerstam, Karl y Gustav Johansson. "Utveckling av kvalitetskontroller i produktionslinor : i Scanias motormontering". Thesis, KTH, Industriell produktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192673.
Texto completoThis paper presents a number of different methods and aspects for quality improvement and solving issues regarding quality in assembly lines. The main strategies presented in the paper are poka-qoke and In-Process Verification (IPV), which is a strategy for quality improvement as it decreases the need for extensive and generally ineffective End-of-Line Testing by easing root cause analysis.To verify the presented strategies, the authors have completed a project for the management at Scania’s engine assembly department who aims to cut the number of received deviation reports in half. Using Scania’s internal statistics, the authors have analyzed the present situation and selected areas with the greatest potential for improvement and conducted further analysis. The authors have suggested solutions based on IPV and poka-yoke principles where possible, or presentented areas that need further investigation by Scania’s personnel.The authors suggest that Scania’s engine assembly department should allocate more resources to improve the use of In-Process Verification to be able to halve the number of incoming deviation reports. It is realistic and possible to reach the set goal, but it requires that the engine assembly department implement function tests of sensors and cables, thus discovering where in the process these deviations occur. Another suggestion is to upgrade the current Q-zone in the paint shop to a Quality Gate that is a dedicated final inspection of the parts that are assembled in the paint shop
Mattisson, Olof. "Effektivisering av en produktionslinje för designade trägolv vid Kährs". Thesis, Linnéuniversitetet, Institutionen för teknik, TEK, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-22783.
Texto completoBremert, Michael y Stefan Persson. "Flermålsoptimering och analys av produktionslinje samt identifiering av förbättringsmål". Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-6173.
Texto completoTo meet the demands from their customers Volvo Powertrain has set a new production goal for cylinder heads for 13-liter diesels engines. The production lines are built as a flow line of grouped CNC machines, served by a gantry for loading and unloading. The new production goal for one of the production lines, segment 2, is 33 cylinder heads per hour. Volvo Powertrain has also found through the production monitoring-system, Duga, that the waiting time for the loading equipment is a significant amount of the available production time. The aim of this project is hence twofold: (1) to verify that the calculations of the waiting time made in Duga are correct; (2) to investigate and propose improvements for the production line in order to achieve the original targeted production goal. This has been done by using simulation and simulation-based optimization technology and for this purpose a generic simulation module of a gantry was made. This project will not answer questions regarding economic consequences, staffing and quality losses in the production line. A simulation model has been built in the first phase of the project for a machining cell in Segment 2, which contains one gantry for the loading and unloading operations of four different CNC machining centers connected in series. The simulation model shows that the waiting time of the loading equipment in real time is not as big as what is calculated in Duga. This discrepancy is due to a misleading definition of the waiting time made in Duga. The generic gantry module has been used to build a simulation model of Segment 2. Three different optimization runs has been made with an optimization client from the University of Skövde. One of the optimization runs found a solution that matches Volvo Powertrains production goal. From this optimization run one preferred and realistic solution was chosen. The solution includes new levels in buffers along the production line, line balancing and improved availability to the different machines and gantries. The preferred and realistic solution increases the production rate by 10%.
Lennartsson, Lars. "Förbättring av Barillas interna materialflöde : Huvudfokus mot produktionslinje 19". Thesis, Karlstads universitet, Science, Mathematics and Engineering Education Research (SMEER), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31570.
Texto completoOsman, Mustafa y Zead AbdulKarim. "Produktionslinje effektivisering i ett tillverkande företag. : En fallstudie utförd på Spaljisten AB". Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45297.
Texto completoLundström, William. "Effektivisering av en rengöringsprocess i en produktionslinje : Kompakt tvättkonstruktion som ersätter befintlig tvättanläggning". Thesis, Karlstads universitet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-72946.
Texto completoThis report documents a bachelor thesis in the course engineering program in innovationtechnology and design. The course comprises 22.5 credits and is conducted in the spring term2019 at Karlstad University. The project has been carried out in collaboration with RZ ZampartAB The existing processes in RZ Zampart's production have been reviewed and there areopportunities for improvement. The contractor's purpose with the project is to streamline one ofthe cleaning processes in a production line. In the existing cleaning process, an alkaline solutionis used which is necessary to get the details sufficiently clean for further processing. At present,the aluminum parts are cleaned in a conventional manner, which means storing the parts inorder to make maximum use of the existing washing plant. The conventional method leads toan increased number of products in work that involve tied capital and used by valuable floorspace. The aim was to develop a solution that replaces the first cleaning in the process stage,which leads to lower throughput time, reduced tied capital in stored parts and reduced use offloor space.The project has applied the design process with a project model that includes the phasespreparatory work, feasibility study, requirement specification, concept generation, conceptselection and a layout design. Creative and systematic methods such as tree technology,morphological analysis, models and structural engineering have been used. The result is a compact design that uses steam as a washing medium instead of alkaline solutionsand the parts are washed immediately after the turning operation. The construction createsbetter conditions for a more efficient production where the throughput time decreases, less laborand smaller products in work.
Fredriksson, Alexander y Pontus Stadig. "Analys av produktionslinje vid Modexa AB : En tidsstudie på en lackeringslinje för att undersöka nyttjandegrad och förbättringsåtgärder". Thesis, KTH, Maskinkonstruktion (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299595.
Texto completoModexa AB manufactures doors to kitchen cabinets by measurements from the customer's kitchen. By manufacturing just the doors the kitchen can be renovated with the cabinet left and therefore reduce cost. The doors are manufactured in MDF and are first machined out to the measurements and then painted in the painting line. The painting line is 60 meters long and is operated by 5 operators. Today the painting line has problems with efficacy and faults in the doors after painting. This study focuses on finding the uralitization rate, finding bottlenecks and why problems occur. From this analysis of the production line suggestions of improvement was made with the support from the study. The analysis through a time study was done in six shifts to then calculate the efficiency of the work line and to see what measures can be taken to increase the efficiency. The time study shows the production on the line and all tasks that the operators must do, so the line will produce but which are not really included in their tasks. This proves that the line is not as efficient as it should be and that improvements need to be made. During the study at Modexa, notes were taken for what the operators did every five minutes, so that the study would give a good average of what tasks the operators do and other different tests such as how long it takes for a gap with a defect to go through the process or time it takes loading and unloading of hatches. These tests were performed to be able to make calculations on how much costs could be saved on making various changes in the team structure, work steps and whether to buy new machines. The study showed that the utilization rate on the production line is 48 percent and the number of gaps that get some type of error is 32%.
Fellenius, Beatriz. "Mapping and evaluation of the purchasing process at Ahlvar". Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119938.
Texto completoEngström, Silva Angelina y Lina Stålebring. "Hur gör konsumenter sina val av premiumprodukter i modeindustrin? : En studie om effekten av produktionsland och hur det influerar köp-och betalviljan hos svenska konsumenter". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22058.
Texto completoMotivation: The purpose of this study is to examine whether Country-of-Origin (COO) affects Swedish consumers' Willingness to Pay (WTP) & Willingness to Buy (WTB). Furthermore, the study will also focus on whether Swedish consumers have any knowledge of production countries when purchasing clothing products in the premium sector. Problem statement: Based on the current increased trend towards a more conscious consumer, the study intends to investigate which aspects have a crucial role in the purchasing decision for premium products. Also, how the knowledge of production country affects the company's image, the consumers WTB/WTP. This study will thus fulfil a clear function as there are few previous studies that merge the concepts of COO, WTB & WTP in relation to Premium Branding in fashion context in the Swedish market. Methodology: The study was conducted with a quantitative method focusing on a large empirical survey in which 200 Swedish respondents participated. The questions were conducted from the selected main concepts of COO, Brand Image, Premium, WTP / WTB and quality. Respondents were systematically asked at various geographical locations around the Stockholm area. Results: By separately testing the hypotheses conducted from previous theory, this study finds that Swedish consumers value quality as the most important factor when purchasing premium fashion and their WTB / WTP changes based on the knowledge of production countries. Swedish consumers at the same time value the products along the COO and consider themselves to have a low knowledge of where the products are manufactured. Implications: The study can act as a solution for companies that want to find new competitive advantages and create a larger range of value-creating activities that can attract a larger share of the market.
Gran, Niklas y Albin Thunberg. "Värdeflödesanalys : logistik och installation av solceller". Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23321.
Texto completoThis report visualizes the value stream of solar cells at three different types of installations, followed by proposal of improvement at a growing installation company in Sweden. Through value stream mapping, we see a clear connection between a fast growing rate and logistical problems, where traceability, facilities and staff are key factors, which needs to be connected to create as optimal flow as possible. The results are divided into two groups. The first consists of visualization and information of the current value stream and the second of what kind of improvement we suggest the company takes into consider to go even further. We can also see that the company has great potential to increase its profitability by implementing ERP to its logistical department and to connect the other departments to reach a higher level of efficiency.
Hjerpe, Emma. "Produktionsanalys av delflöde i en produktionslina". Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12810.
Texto completoSwedish Match has questioned what kind of potential problems they have in a specific part of their production flow. The aim of this study is to create a solid ground for continuous improvements for reducing the non value-adding time on the production line A at Swedish Match manufacturing plant in Kungälv. Further, recommendations for future production will be given. The work consists of a production analysis of the conveyer belt system, an analysis of the present situation of the production line and other various problems that can occur in the defined area. Methods that primarily have been used to gather information are observations, simulations, relevant literature and production measurements. The present situation has been visualized through a 3D simulation programme called “Tecnomatix Plant Simulation”, in order to more easily understand the current process flow. The production analysis contains of data, which have been analysed from production measurements and information that the company has provided in order to analyse their Overall Equipment Effectiveness (OEE) and production level. The analysis shows that the problems occuring in the defined area turned out to be symptoms, of a more fundamental problem. Subsequently, conclusions have been drawn that Swedish Match should analyse the other parts of the studied production line A. The main recommendation to Swedish Match is to focus on the entire rather than the partial flow, in order to improve the productivity. Finally, Swedish Match is recommended to study other parts of the production system in order to create opportunities for long-term improvement measures, and not just solutions for a specific partial flow. Many of the recommendations are easy to implement and would thus reduce parts of the non value-adding time, on production line A.
Axelsson, Frida y Henrik Ölmén. "Effektivisering och förbättring av produktionslinje". Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34735.
Texto completoThe thesis is done at Kvibille dairy and includes the design of a packing line for blue cheese. Today ́s line has a maximum production capacity of two tons per day, based on the fact that there are three employees at the line. The production includes three separateflavors to be packaged. The line has a high degree of manual labor and is considereddifficult to handle and not very ergonomic according to the staff on the production line. The goal for this thesis is to improve the ergonomic aspects of the line and if possible reduce the need for personnel without adventuring the production capacity. To find what improvements can be made on the line, a preliminary and background study was made. These studies include interviews, observations in the form of a Rapid Plant Assessment, time measurements and simulations. The study showed that the personnel felt some stress during the line and that the flow stops at several stations which impede the flow. The advantage is that the line is flexible and all the stationsin the line are oriented in the right order. After all the facts were collected and it was determined what was needed for the line, the search for suppliers began. What was needed was an adjustable table and fatigue mats to improve working conditions. Automation was also investigated to minimize the stress on the staff. The automation idea was later replaced with manually controlled aids and semi-automatic machines because it was considered more cost effective. To streamline the line, automatic scales with label applicators wereinvestigated and alternative packaging methods. These methods involved replacing the material on the foil so that the need for plastic wrapping is eliminated. The result was to replace the tables for height adjustable workbenches and introduce a vacuum lift to improve ergonomics on the line. The aluminum foil is replaced by a more durable wax laminated foil called DanaPhane with an integrated name label in the foil, eliminating the need for plastic foil and separate labels. Because the need for these is eliminated, environmental impact is minimized in terms of material utilization and transports. The elimination also means fewer operations, which reduces the need for additional staff. To further streamline the production, an automated scale and weight labeling for each cheese was introduced.
van, Brackel Lars. "Produktionsergonomische Bewertung der aktuellen Produktionslinie des Centerwave 6000". Master's thesis, 2019. https://diu.qucosa.de/id/qucosa%3A35600.
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