This bachelor’s thesis investigates the influence of technological parameters on the quality of the machined surface in three wood species: beech, oak, and spruce. The study focuses on three key parameters: tool sharpness (rz), rake angle (γ), and feed speed. A total of 120 samples were prepared and analysed in both transverse and longitudinal cutting directions. The experiment was designed using the Design of Experiments (DOE) method, while surface roughness was evaluated with an Olympus LEXT OL5000 laser microscope using the surface parameters Sa and Sz. The results indicate that the combination of feed speed and tool sharpness has the most significant effect on surface roughness. The lowest Sa values (below 5 µm) were achieved at a feed speed of 2 m/min, tool sharpness rz < 10 µm, and rake angle between 10° and 13°. In contrast, the highest Sa values (above 40 µm) occurred at 6 m/min feed speed, dull tools, and rake angles above 20°. The cutting direction relative to the wood grain also proved critical, as transverse cutting resulted in rougher surfaces. Based on the data, functional relationships between parameters were established, providing a foundation for further optimization of machining processes in the wood industry.
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