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Academic literature on the topic 'Tidsstudier'
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Dissertations / Theses on the topic "Tidsstudier"
Nilsson, Viktor. "Genomförande och framtagning av metod för tidsstudier vid LB-Hus AB." Thesis, Växjö University, School of Technology and Design, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-2351.
Full textSyftet med detta examensarbete var att bestämma enhetstider som används för prissättning och produktionsplanering av ytterväggar vid LB-Hus AB. Syftet var också att utforma en standard för kommande tidmätningar vid förtaget.
Som hjälpmedel vid tidmätningarna har programvaran Umt-Plus använts. För att underlätta vid kommande mätningar vid företaget har enklare instruktioner för de vanligaste funktionerna i programmet tagits fram och arbetsgången noggrant dokumenterats.
Under genomförandet av tidmätningarna har produktionsprocessen granskats och de problem som har uppmärksammats är bl a. oklarheter i ritningsunderlagen som snabbt orsakar störningar i produktionen och att de beredningsmissar som förekommer ofta resulterar i onödigt dubbelarbete.
De uppmätta enhetstiderna stämmer väl överens med de tider som i dagsläget används av företaget. Dock har bara en linje undersökts och vidare undersökningar bör göras vid de andra linjerna för att med säkerhet kunna bekräfta de tider som används. Vid studien har verkningsgraden vid linjen uppmätts till 74 % och det är lägre än vad LB-Hus AB använder sig av vid sin kalkylering. Skillnaden mellan verklig verkningsgrad och den antagna kan vara en orsak till att det i nuläget behövs en hel del övertid för att hinna med den produktion som läggs ut i fabriken.
Nguyen, Thomas. "Möjligheten till kortare lossningstider genom processkartläggning och tidsstudier av aktiviteter på godsmottagningen vid ett centrallager." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168095.
Full textThe company in this study stocks products for a retail company and is currently in an expansion phaseas the retail company opens new stores. The company plans for a new warehouse in the future, butuntil a new warehouse is built and the current five warehouses the company is operating must copewith the increased demand. The operation manager thinks that the container unloading takes too long,therefore, the purpose of this study was to provide the company with basis to shorten the unloadingtimes. In this study, we aimed to investigate the potential for improvement in the unloading processesand the cost difference between different container unloading’s.The company's goods reception has been mapped through a case study, which was based oninterviews and observations. The mapping shows that the goods reception has eight ports, and five ofthem are equipped with conveyor belts. The company also uses two different unloading processes.One unloading process in ports with conveyor belts and the other in ports without conveyor belts(open ports). Time studies were conducted on both unloading processes on eight different containers,to include, among other things, how the unloading times for different containers differ. The timestudies were also conducted to study how various activities in the unloading process was affected bythe contents of the containers.After the time studies, the costs for unloading the containers have been calculated. The results showthat the costs vary between the different containers. The cost was 1 258 SEK at the lowest and 5 453SEK at the highest. The study also included the cost per completed Euro-pallet and the cost per boxthat was unloaded. Analysis of results shows that containers unloaded at open ports are generallycheaper for companies as the unloading process requires less repackaging and fewer workers, eventhough the containers contained more and heavier boxes.With analyses of the time studies, interviews, observations, and mapping, seven problem areas for theunloading processes were identified, which are how the boxes are packed in the containers, the degreeof filling in the containers, information about the number of boxes on Euro-pallets, lack of space at thegoods receiving area, different work strategies, placement of plastic machines, and planned unloadingtimes. The effects of these problem areas are that the workers must spend unnecessary time searching,sorting, and repackaging the boxes and that workers are stationary on various occasions.To address the problem areas, we recommended the company to implement various changes. The firstrecommendation was that the company should focus on improving the collaboration with the suppliersto be able to get more information and influence how the suppliers pack the boxes in the containers. Itis also the main recommendation for the company because many of the identified problem areas thecompany can avoid by improved collaboration with the suppliers. Also, the company wasrecommended to implement a standardized working method and investigate the possibilities formoving plastic machines to reduce unnecessary activities and driving distance. The company was alsorecommended to check the container lists so that the information always matches with the companysystem and to create an article register so that the workers know the number of boxes and how to packthem in the Euro-pallets.
Andersson, Linus, and Victor Polsten. "Effektivisering av två monteringslinor ur ett produktivitetsperspektiv." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Maskinteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-21738.
Full textBarzenji, Swara, and Anders Västfält. "Utveckling av produktionslina." Thesis, Jönköping University, JTH, Mechanical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-9139.
Full textThe 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.
Granberg, Markus. "Framtagning av Arbetsprocess för Generering av Globala Elementblad med stöd av Digitala Underlag : – Ett koncept med dagens programvaruportfölj för Scanias chassimontering." Thesis, KTH, Industriell produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103797.
Full textScania operates in a global market and has manufacturing at multiple sites worldwide. Independently of where they are made, a consistently applied standardized work is a fundamental necessity to ensure the quality of their products. Assembly instructions – or element sheets as they are called at Scania, play an important role in communicating this standardized work across the entire company. The so called standardized work is relatively well established amongst production units which assembles the same type of key component, but in a wider perspective there are differences in presentation of the data in element sheets as well as the work methods used to create them. This evokes the need to standardize the creation process as well as how the data of the element sheets are presented. The purpose of this study has been to develop and test an efficient work process where digital models are used for creating element sheets with a high level of comprehensibility, and in addition for conducing predetermined motion time study (PMTS) of the activities included in them. Thus, a link between digital test assembly (DTA) and the process for creating element sheets has been established. A proposal for a work process for the creation of element sheets for the chassis assembly is presented. In this, the use of digital models while conducting PMTS as well as when extracting illustrations for describing assembly operations are fundamental. The work process is adapted to fit Scania’s existing software portfolio. The result of the survey where the work process efficiency was evaluated showed that it has the potential to deliver element sheets with a higher quality than the process of today.
Salomonsson, Joakim. "Detaljplanerad materiallogistik för byggarbetsplatser med hög upprepandegrad." Thesis, Linnéuniversitetet, Institutionen för bygg- och energiteknik (BE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-26907.
Full textKarlsson, Emelie. "Identifiering av flaskhalsar på ett pappersbruk : En tidsstudie på produktionsavdelningens förpackningsmaskiner." Thesis, Linköpings universitet, Industriell Produktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167247.
Full textIf Nordic Paper Seffle AB is going to expand or exchange parts in their production in the future, they have to base their decisions in facts. Today, the production department doesn’t have any cycle times, or activities documented for their three packaging machines. By doing this thesis a time study will be performed with the purpose of documenting the machines activities and to identify bottle necks in the value stream. The thesis has its’ roots in Lean, with tools and concepts profound to the philosophy. The work won’t involve any time studies of the operators in any way. This means that it’s only the packaging machines which will be studied. Circular work will be mentioned to give a clearer picture of the process. The listed activities will be reported in tables together with their cycle times. An analysis will follow each packaging machine for whole groups or single activities, presented as bottle necks. The results will be analyzed and viewed from an efficiency perspective and will be compared to, among other things, the points Lean presents for waste. Here, the bottle necks will be described alongside why they are considered bottle necks for the packaging machines. In connection to this a probable reason and solution is presented. The result is expected to help the company grow and lay a foundation for future studies in related areas that will be further described in the conclusion.
Lennartsson, Ambjörn, and Martin Svensson. "Ordersärkostnader och lagerföringskostnader - AB Bruzaholms Bruk." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-15167.
Full textWennerström, Helena, and Karl Hybinette. "Sjuksköterskearbetet på en neonatal intensivvårdsavdelning : en tidsstudie." Thesis, Röda Korsets Högskola, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:rkh:diva-37.
Full textThe risk for acquire stress related diseases is high in medical staff since the demand on quality, efficiency and work pace has increased. There is not much recent knowledge about how nurses in neonatal intensive care spend their time and which work tasks the nurses perform in their everyday work. The aim of this study was to examine which work tasks a nurse in neonatal intensive care perform during their workday and present a survey to how the time divides between these different tasks. A structured time study was performed at a neonatal intensive care unit in Sweden. The result show how the nurses divide their time between 69 different work tasks divided in to 23 categories in eight areas of competence and how the nursing work divide in terms of time between direct patient care and other patient related tasks. Nurses spend 54 percent of the total worked time to indirect care like preparations for nursing tasks, material and cooperation with external caregivers while 35 percent where spent at direct bedside care. The nurses time is divided between many different tasks and areas of expertise, it is necessary to evaluate the nursing profession and the tasks that leads them away from the patients bed.
GANJBAR, LINDA, and SANDRA NORDSTRÖM. "Att larma eller inte larma." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17379.
Full textProgram: Textilekonomutbildningen