OBRABOTKAMETALLOV Vol. 24 No. 4 2022 81 EQUIPMENT. INSTRUMENTS References 1. Zhou C., Guo K., Sun J. Sound singularity analysis for milling tool condition monitoring towards sustainable manufacturing. Mechanical Systems and Signal Processing, 2021, vol. 157, pp. 1–17. DOI: 10.1016/j. ymssp.2021.107738. 2. Boaron A., Weingaertner W.L. Dynamic in-process characterization method based on acoustic emission for topographic assessment of conventional grinding wheels. Wear, 2018, vol. 406–407, pp. 218–229. DOI: 10.1016/j. wear.2018.04.009. Investigation of the relationship between the cutting ability of the tool and the acoustic signal parameters during profi le grinding Dmitrii Ardashev a, Alexander Zhukov b, * South Ural State University, 76 Prospekt Lenina, Chelyabinsk, 454080, Russian Federation a https://orcid.org/0000-0002-8134-2525, ardashevdv@susu.ru, b https://orcid.org/0000-0002-9328-7148, zhukovas@susu.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. 2022 vol. 24 no. 4 pp. 64–83 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2022-24.4-64-83 ART I CLE I NFO Article history: Received: 30 August 2022 Revised: 06 September 2022 Accepted: 21 September 2022 Available online: 15 December 2022 Keywords: Profi le grinding, Profi led grinding wheel Actual cutting ability Acoustic signal analysis Spectral composition Natural frequency Informative frequency Sound index Funding The research was fi nancially supported by the Ministry of Science and Higher Education of the Russian Federation (grant No. FENU-2020-0020). ABSTRACT Introduction. Modern mechanical engineering is closely connected with digital production management technologies, for which an important aspect is the collection of reliable information about the current state of the systems. Acoustic methods of current control of the tool cutting ability possess signifi cant potential due to the possibility of continuously obtaining up-to-date data on the parameters of machining process. Profi le grinding is one of the widespread methods of machining surfaces of complex confi guration. The high importance of this method lies in the high degree of responsibility of shaped parts obtained with it. The wear parameter of profi led grinding wheels needs current control to the same extent as other types of cutting tools. At the same time, acoustic methods of research have not found wide application in relation to profi le grinding. In view of this, the present work is aimed at studying the infl uence of the tool wear rate on the acoustic characteristics of grinding when using grinding wheels of different profi les. Purpose of work is to determine the acoustic parameters of profi le grinding with application of planar grinding scheme as it wears out in comparison with analogical process with application of straight profi le grinding wheel. As the basic methods of research an experiment is used to study the acoustic phenomena accompanying grinding with application of wheels of different profi le. An analysis of the acoustic signal of grinding is carried out, as well as an analysis of the spectrum of its frequency composition. The frequencies of natural vibrations of grinding wheels of different profi les are investigated, its sound index is determined as a criterion for evaluating its characteristics. Acoustic characteristics of the grinding process with the use of grinding wheels of different profi les are compared. Regression analysis of acoustic data obtained as a result of the experiment is also used. Results and discussion. Spectrograms of frequencies of natural vibrations of the wheels under research, as well as a number of spectrograms of the acoustic signal accompanying the processing process for various technological conditions are received. As a result of comparing the obtained spectrograms, the informative frequencies of the grinding processes are determined. Mathematical models of sound level dependence on the value of periodic vertical feed St at depth t and processing time T are developed. It is established that the value of periodic vertical feed St at depth t has a greater infl uence on the acoustic index in comparison with the machining duration T. Practical signifi cance and prospects of the results of the work lies in the possibility of increasing the effi ciency of profi le grinding processes due to the rational use of the tool availability. For citation: Ardashev D.V., Zhukov A.S. Investigation of the relationship between the cutting ability of the tool and the acoustic signal parameters during profi le grinding. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2022, vol. 24, no. 4, pp. 64–83. DOI: 10.17212/1994-6309-2022-24.4-64-83. (In Russian). ______ * Corresponding author Zhukov Alexander S., Post-graduate student South Ural State University, 76 Prospekt Lenina, 454080, Chelyabinsk, Russian Federation Tel.: 8 (351) 272-32-94, e-mail: zhukovas@susu.ru
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