Master´s thesis deals with the issue of improving production processes in engineering company, which is expanding it´s existing facilities with the new hall. The company is engaged in manufacturing gears and gearboxes. The thesis deals with the design of new layout in new and former facilities in order to optimize material flow, costs and minimize production time.

In the coming decades, many automotive industries will undergo changes where the electrification of vehicles will play a significant role. In order for a manufacturing company to be able to compete in the market, constant adaptation is needed to maintain competitiveness. To make companies more efficient, tools as Lean production is used together with several digital technologies to maintain a competitiveness and facilitate possible changes. Simulation can be used to control and develop future production and answer important questions about about future challenges.The purpose of this study is to investigate, through discrete event simulation, the needs and conditions that a scenario with 50% conventional and 50% electric driveunits will introduce to Scania’s transmission production. The purpose was partially fulfilled through a preliminary study to provide a basis for the upcoming simulation models. This preliminary study identified three critical buffers, essential for future production planning. Therefore, three simulation models were established, focusing on the total number of buffer slots. The result of this study presents three proposals for the number of slots for each buffer, as well as the number of stations for the testing and repair of the electric units. Given that a high volume of products alters the need for space requirements, it was crucial to describe the capacity of these buffers and the potential of their stations. To fully leverage this study and the three simulation models, a more further and detailed data collection on several production processes is recommended.

The main goal of this diploma thesis is new lay – out of organizational structure of assembly lines, which is leading to the material flow shortening and elimination of problems with factionalism of industrial process. In this thesis is introduce the company, where is proposed new organizational structure of assembly lines, together with description of deficiencies current organization. The good know ledges of assembly process and technology is important for the right modification. According theoretic findings it was proposed new organizational structure of assembly lines and the cost saving was calculated

The dissertation is concerned about, according to author still “live” problem of optimization of logistic flow, with scope to company environment. The aim is to find correct methodology for defined problem and to apply it to particular case study. Theoretical part begins with description and analysis of actual state of problematic of logistic flow optimization and listing the methods which are able to be applied to these problems. The three main groups – exact methods, heuristic methods and combined methods take part in. The analysis continues further with searching the methods, useful for application in production company environment. Vast focus is on layout design task, because once layout is created, except some minor changes, it lasts usually for some years and therefore it is necessary to consider it properly. Moreover, there is also difference between other characteristics of production, as production planning and machines / technologies upgrade and layout; the former are in a certain manner changeable and not stable, but the layout cannot be changed on for ex. weekly basis. Contribution to research is located at the end of theoretical part, which is newly modified methodology to be more suitable for practical application. Practical part begins with the description of particular case study, e.g. actual status of logistic system in enterprise. The processes described include purchasing management, production management and mainly layout design of production space. The application of suitable methods consists of group technology methods – already known method, plus newly modified method and their mutual comparison. In addition is included already known value stream mapping method. The result is recommendation for change in layout design, developed by integration of results, brought by group technology methods and value stream mapping method.