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    Correction of the Control Program for End Milling on a CNC Machine
    (Igor Sikorsky Kyiv Polytechnic Institute, 2025) Petrakov, Yuri; Romanov, Yan
    The results of experimental testing of the correction of the CNC-programs for end milling on a CNC machine are presented. The correction is performed for serial and single-piece production conditions using the method of control using a posteriori information. A posteriori information is determined during measurements directly on the CNC machine with a three-coordinate probe from Renishaw. Moreover, for serial production, the pre-machined part is measured, and for single-piece production, the machining allowance is divided into two parts and the surface machined in the first pass is measured. The correction is performed using the experimentally determined transfer function of the machining system. The effectiveness of the developed methods has been experimentally proven: after milling the first part, the average error was 0.1 mm, and after machining the second part (and subsequent ones) using the corrected control program, the error decreased to 0.012 mm, i.e. the machining accuracy is increased by more than 8 times. In the conditions of single production, when dividing the allowance into two parts and determining the correction according to the calculated transfer function, the machining error decreased by more than 6 times. The time loss for performing two passes in the conditions of single production does not exceed the machining time according to traditional technology, when to ensure the specified accuracy it is necessary to perform several passes according to the same control program.