Investigation of manufacturing of free-form surface defined by control points on Al 6082 alloy using cnc milling machine

Increased comfort conditions which depends on technology has been increased usage of the freeform surfaces nowadays. Production of freeform surfaces have been important at transportation, electronic and aviation industries. While producing these surfaces, increasing processing efficiency and coming ideal form supplies optimization of parameters. In this study, production of a freeform surface with B-spline form curves from manipulation parameters has been searched. B-spline curves has been gaired by using base functions and surface has been made tensor produced. The surfaces which includes free form has been made strict CAD (Computer Aided Design) surface of the tensor product of these curves. With free-form surface CAD (Computer Aided Design) and tool path was produced by using CAM (Computer Aided Manufacturing). There are three stages in freeform surface rough, middle rough and thin rough manipulating 3 different speeds (2500, 3000, 3500 rev/min) and progress (500,800,1000 mm/min), in middle rough 3 different speeds (2500, 3000, 3500 rev/min) and progress (800, 1000, 1200 mm/min), the finish processing the 3 different speeds (2500 3000, 3500 rev/min) and progress (1000, 1200, 1400 mm/min) of the 9 samples were processed. Surface maps of manipulated samples were uncovered by scanning 3B scanning method. The surface was compared with dimensions of the referance surface by being divited into four different parts and by taking coordinate measurements (X, Y, Z) from 18 points of each region according to it' s width. The tool paths of the samples, which gives the best an worst results in terms of surfaces form error, were determined. Depending on the increase of progress and the number of cycle, the increase of form errors was identified.