Arbetsplatsutformning av kulventilsmontering

Abstract

Mann Teknik AB, henceforth MannTek, is a company located in Mariestad, Sweden. MannTek produces valves and couplings used at an industrial scale, one type of valve the company produces is the ball valve. The ball valve accounts for a small part of the company's yearly revenue and the assembly line for the product has therefore not been developed or analyzed. The projects goal is to create a proposal for how the ball valves assembly line layout could be improved. The project started with a trip to MannTek's factory in Mariestad, where the group received a presentation from the company describing both the company, its philosophies and its products. After the initial visit a methodology for the project was created. The methodology was focused on minimizing waste and therefore to use the time study program AviX to study the assembly line. The result from the time study was thereafter used in the methodology called Simpli ed Systematic Layout Planning [Muther, 1974] to create a proposal for a new assembly line layout. Data was collected at the factory as well as through correspondence with MannTek. Both quantitative and qualitative data was collected to get a broader understanding of the assembly process [Davidson and Patel, 2014]. The quantitative data was collected through a custom built Microsoft Excel program that let the workers collect data in a simple way with an easy to use interface. User experience was espacially important to make sure that the data was reliable. Qualitative data was collected with pictures of the assembly process, video as well as observations. The method FSLP was used to create a proposal for a new layout for the assembly of ball valves [Muther, 1974]. MannTek prefered an alternative without any investments since they want to use their current functions. The results are then discussed from multiple di erent point of views and connects the result with the theory that is the projects backbone. Using the result and the discussion as a foundation, a well-founded conclusion to the project was made. It was concluded that an assembly layout that is optimized regarding distance with only one production ow was the most suitable layout for the regarded assembly process. The chosen layout is backed by the collected quantative data, the digital time study as well as observations of the current assembly process. It is also concluded that 5S [Chiarini, 2014] should be implemented together with continuous improvement [B ornfelt, 2018] to improve the workplace further. With an organized workplace, the ow through the assembly line will be more stable and the risk of creating losses will decrease.