Take the complex three-dimensional (3D) surfaces which consist of all kinds of curves, such as cosine, parabolic and elliptic as examples, the processing is analyzed to determine the reasonable feed routes. The method of parameter programming provided by SINUMERIK 802D system is applied to choose reasonable machining parameters. Using these parameters for NC programming, not only the roughing and finishing machining with different processing requirements can be met, but also the programming solutions are optimized and the NC program is briefer than that generated by CAM software. Furthermore, human-computer interaction can be achieved by means of assignment to the parameters.
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Wang et al. (2011) studied this question.