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With the advancement of science and technology , put forward higher requirements for the degree of complexity of the product , processing accuracy and processing efficiency , performance, high-quality products in order to meet the rapid development of high-end processing equipment , high-speed high - precision machining five-axis machine tools most widely . Interpolation technology is a key technology in the five-axis machine tool numerical control system , form of interpolation , the accuracy and speed of decision complexity, accuracy and processing speed of the machine that can process parts . Interpolation technique has been developed rapidly , many foreign high-end CNC systems have interpolation command , most of the domestic CNC system or common ordinary interpolation instruction , but the fast development . For this reason, the research and development of these advanced interpolation techniques are very important , this paper five-axis CNC system NURBS curve the CUBIC spline curves and AKIMA spline curve interpolation techniques , mainly the following aspects : (1) ( 2) analysis of NURBS curves , CUBIC spline curve analysis of the structure of the axis CNC machine tools , and swing space movement and post-processing of the five-axis machine tools for analysis and research ; , AKIMA spline curve theory and the nature and characteristics , has put forward a reasonable five-axis spline interpolation algorithm , and interpolation algorithm performance analysis ; ( 3 ) were given five-axis NURBS curve , CUBIC spline curves , the AKIMA spline curve interpolation complement NC code format , and its the CNC code of decoding for research ; (4 ) to the VC platform for the development of a simulation system to verify the nature of the curve , the five-axis spline interpolation the CNC code format correctness five-axis spline curve interpolation algorithm correctness , accuracy and interpolation .
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