CLASSIFIER OF STRUCTURAL AND TECHNOLOGICAL ELEMENTSWITH BOUNDARIES OF TRANSITION ZONES FOR PROCESSING PROGRAMMING ORIGINAL NON-ROUND PARTS ON CNC MACHINES

A direction in the development of the preparation of control programs for machining parts on CNC metalcutting machines based on the typification of parameters of transient zones is proposed. The possibility of creating a catalog of typical parameterized structural and technological elements of original non-circular parts of complex shape with boundaries of transition zones based on the analysis of shapes of processed structural elements, transitions of their processing, as well as surfaces of inputs and outputs of tools and their cutting parts is shown. Fragments of such a catalog are given for processing elementary cylindrical internal structural elements by drilling. Appropriate mathematical models are proposed to determine the parameters of dimensional adjustment of equipment, taking into account the boundaries of transient zones. This approach creates conditions for theoretical and empirical simulation of cutting processes in transition zones, ensuring maximum processing performance and tool durability, taking into account the effects of various factors, as well as reducing the length of working strokes.