Abstract
Recently, there are many mechanical parts that are difficult to machine because of complex shapes. A new category on machining these, by 5-axis machining center, so-called ″skillful machining″ has been appeared. This kind of machining method depends on the development and the progress of 3D-CAD/CAM system. But in this case, the generation of tool path for machining of the free curved three dimensional shapes is treated as a function of CAD/CAM system. In some cases, a unexpectd profile error often occurs because of the set of tolerance of the profile by the divided straight lines and the circular arc curves. In this study, to machine the axisymmetric complex curved surfaces with high accuracy, the tool path is calculated directory from the 3D-CAD data and the mathematicaly expressed data. The accuracy of the machined profiles are evaluated and compared.
