抄録
Research and development of a CAD/CAM system for free-form surfaces by using NURBS (Non-Uniform Rational B-Spline) is carried out. First, the architecture of the system, theoretical basis of NURBS, format of NURBS-NC (Numerical Control) machining program, compensation of cutting path and 3D-NC simulation method are described. Then, CAD and CAM of a gas turbine blade is performed by the developed system and the results discussed.
