Abstract
This report introduces the geometrical surface roughness and experimental identification of the factors which produce deviation from the geometrical roughness in micro milling of three-dimensional surface. The geometrical roughness is given as a function of feed, pick feed, radius of tool and radii of work surface in the direction of feed and pick feed, respectively. However, actual surface roughness is usually much larger than the geometrical roughness. The experimental analysis has verified that the causes of deviation from the geometrical roughness are metal adhesion to the cutting edges and fluctuation of position of tool, and in particular the latter amplitude limits the surface roughness attainable.
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