In the master thesis the optimization of the cutting parameters by the milling of hardened tool steel is presented. The aim of the thesis is to achieve the dimensional accuracy of the workpiece with maximum resistance tool and the highest possible productivity. The master thesis describes the process of experimental sample, properties of the material and tolls used in the experiment, way of clamping the workpiece, processing strategy, the design of experiments, measurement of dimensioanal deviation, optimization of process parameters, confirmation test, durability test of the milling tool and cost analysis. Because of the unsteady process of milling, we analyzed the influence of the input parameters of milling by three different milling tools with the design of experiments methodology. Using regression models we optimized the milling parameters according to our criteria. With optimal settings of the cutting parameters for individual milling tools we performed confirmation experiment and durability test. With experiments and analyzes we came to the conclusion which parameters have the greatest influence on the production quality and with which milling tool guarantees a reliable and stable process with the highest possible productivity.
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