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Freeform surface milling
In manufacturing, freeform surface machining refers to the machining of complex surfaces that are not uniformly planar. The industries which most often manufactures free-form surfaces are basically aerospace, automotive, die mold industries, biomedical and power sector for turbine blades manufacturing. Generally 3- or 5-axis CNC milling machines are used for this purpose. The manufacturing process of freeform surfaces is not an easy job, as the tool path generation in present CAM technology is generally based on geometric computation so tool path are not optimum. The geometry can also be not described explicitly so errors and discontinuities occurrence in the solid structure cannot be avoided. Free-form surfaces are machined with the help of different tool path generation method like adaptive iso-planar tool path generation, constant scallop tool path generation, adaptive iso-parametric method, iso-curvature, isophote and by other methods. The different methods are chosen based on the parameters which is needed to be optimized.[1][2]
^Lazoglu, I (2009). "Tool path optimization for free form surface machining". CIRP Annals - Manufacturing Technology. 58 (2009): 101–104. doi:10.1016/j.cirp.2009.03.054.
^Ding, S (February 2003). "Adaptive iso-planar tool path generation for machining of free-form surfaces". Computer-Aided Design. 35 (2): 141–153. doi:10.1016/s0010-4485(02)00048-9.
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