OBRABOTKAMETALLOV Vol. 23 No. 3 2021 MATERIAL SCIENCE EQUIPMENT. INSTRUMENTS 6 1 4 Adaptation of the CNC system of the machine to the conditions of combined processing Mikhail Borisov 1, a, Dmitry Lobanov 1, b, *, Alexander Zvorygin 2, c, Vadim Skeeba 3, d 1 I.N. Ulianov Chuvash State University, 15 Moskovsky Prospekt, Cheboksary, 428015, Russian Federation 2 Russian Federal Nuclear Center - All-Russian Research Institute of Experimental Physics, 37 Mira Ave., Sarov, 607188, Russian Federation 3 Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation a https://orcid.org/0000-0001-9084-1820, borisovmgou@mail.ru; b https://orcid.org/0000-0002-4273-5107, lobanovdv@list.ru; с https://orcid.org/0000-0003-3610-4648, zvor95@yandex.ru; d https://orcid.org/0000-0002-8242-2295, skeeba_vadim@mail.ru Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2024 vol. 26 no. 1 pp. 55–65 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2024-26.1-55-65 ART I CLE I NFO Article history: Received: 11 December 2023 Revised: 25 December 2023 Accepted: 08 January 2024 Available online: 15 March 2024 Keywords: CNC machine Electrochemical grinding Programmable device Automatic control Combined processing Control program Funding This research was funded by Russian Science Foundation project N 23-29-00945, https://rscf.ru/en/project/23-29-00945/ Acknowledgements Researches were conducted at core facility of NSTU “Structure, mechanical and physical properties of materials”. ABSTRACT Introduction. Increasing the effi ciency of processing technologies for products made from modern highstrength, diffi cult-to-process materials with increased physical, mechanical and operational properties consists not only in improving the technology itself, the tools for its implementation, but also in modernizing technological equipment taking into account new achievements in the fi eld of mechanical engineering. Modern computer numerical control (CNC) equipment is now quite advanced in terms of controlling basic cutting movements. Adaptive monitoring and control systems, as a rule, additionally installed on processing equipment, make it possible to further improve the quality of processing parameters. With the development of new hybrid and combined technologies that combine several types of infl uence on the product being processed, the issue of synchronizing the automatic control of the movements of parts of technological equipment with the control and management of accompanying processes of combined technologies has become acute. One example of such technologies is electrochemical diamond grinding with periodic dressing of the working surface of a diamond wheel using reverse polarity current. The polarity of the current and the duration of its pulses are controlled by special programmable devices. Current switching units are connected to it. It serves to supply alternating currents of direct and reverse polarity to the electrical circuit and is made on the basis of key elements. Installing such programmable devices on CNC machines leads to its’ equipping with an additional autonomous automatic control system. At the same time, it is diffi cult to coordinate the operation of the machine’s CNC system, which controls the movements of its working parts, and the programmable device used to control the polarity and duration of current pulses during combined processing. The purpose of the work is to synchronize the CNC system of the machine with the control system for the process of periodically changing the polarity of the current. The study was carried out on an experimental stand. Methods. The research methodology involved conducting an experiment consisting of synchronizing the operation of the machine’s CNC system with the operation of the control system for the process of periodically changing the polarity of the current. To evaluate the results, the time of movement of the diamond wheel as a result of the working stroke was compared with the duration of current pulses of diff erent polarities specifi ed in the control program of the developed software. Results and discussions. As a result of the research, it is established that the developed software and hardware complex makes it possible to synchronize in the CNC system of the machine tool the control of the movements of the working parts with automatic control of the periodic change of current polarity during electrochemical diamond grinding, which can signifi cantly expand the technical capabilities of CNC machines. For citation: Borisov M.A., Lobanov D.V., Zvorygin A.S., Skeeba V.Y. Adaptation of the CNC system of the machine to the conditions of combined processing. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2024, vol. 26, no. 1, pp. 55–65. DOI: 10.17212/1994-6309-2024-26.1-55-65. (In Russian). ______ * Corresponding author Lobanov Dmitry V., D.Sc. (Engineering), Professor I.N. Ulianov Chuvash State University, 15 Moskovsky Prospekt, 428015, Cheboksary, Russian Federation Tel.: + 7 908 303-47-45, e-mail: lobanovdv@list.ru
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