NURBS curve interpolation algorithm adaptive to the machine's kinetic characteristics
by Fangyu Peng, Xubin Chen, Yong Zhou, Bin Li
International Journal of Materials and Product Technology (IJMPT), Vol. 33, No. 1/2, 2008

Abstract: NURBS curve interpolation algorithm for high speed NC machining, which can fit diverse machine tool's kinetic characteristics and has the function of look-ahead control, is proposed. By integrating curve geometry features and machine tool dynamic characteristics, the look-ahead control information can be obtained. The interpolating process can be divided into two phases: getting the look-ahead control information including the particular points in the curve and their suitable max feed rate, modifying the real-time interpolation feed rate all the time according to the look-ahead control information. This algorithm has advantages over others on three aspects: wide adaptation to machine tool, high profile precision, and small feed rate vibration.

Online publication date: Wed, 30-Jul-2008

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