SOFTWARE CONTROL OF MACHINES BASED ON TYPIFICATION OF TRANSIENT ZONE PARAMETERS FOR PROCESSING OF ORIGINAL NON-CIRCULAR PARTS

The paper provides an overview of trends in the preparation of control programs for CNC metal cutting machines. The direction in the development of programming of machining parts based on the transient zone parameter typification is described. The analysis of the shapes of the processed structural elements of the original non-circular parts of complex shape, the transitions of their processing, as well as the input-output surfaces of tools and their cutting parts makes it possible to create a catalog of typical parameterized structural and technological elements with the boundaries of transient zones. 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 transient 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.