Every successful company strives to process optimization. However, the effective process optimization requires the use of appropriate methods and tools. The aim of the diploma thesis was to optimize the existing production process from a selected company in a specific case and thus reduce costs and increase product profitability and quality. In the first part of the thesis are theoretically presented value stream mapping, cost – time profile, methodology of economic viability and efficiency, and the calculation of cost - optimal material supply. These are the methods and tools of lean production used in process optimization. Next, we envisioned three versions of optimizing the existing production process. For all three, we made a value stream map, a cost-time profile, and a comparison of annual costs and profit. Based on the obtained results we determined the optimal among them. We then calculated the breaking point and the net present value for the optimal version and calculated the expected cost-efficiency of material supply. Finally, there are comments on the results obtained and a conclusion on the return on investment.
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