This paper deals with the design of the classification system which task will be component classification from view of manufacturability by CNC machines. Each component can be described by distributi on and orientation features and surfaces witch located in the component, but it is also necessary to take into account what relations exist between these elements. For the purposes of computer representations of CNC machine seems to be most efficient solution describe the kinematic characteristics by mathematical formulas which clearly define the option of the kinematics of CNC machine. These data can be processed by the theory of forward or inverse kinematics.
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