Lapshin V.P., Khristoforova V.V., Nosachev S.V. 2020 Vol. 22 No. 3

OBRABOTKAMETALLOV Vol. 22 No. 3 2020 56 EQUIPMENT. INSTRUMENTS References 1. Huang S.N., Tan K.K., Wong Y.S., Silva C.W. De, Goh H.L., Tan W.W. Tool wear detection and fault diagnosis based on cutting force monitoring. International Journal of Machine Tools and Manufacture , 2007, vol. 47, iss. 3–4, pp. 444–451. DOI: 10.1016/j.ijmachtools.2006.06.011. Relationship of Temperature and Cutting Force with Tool Wear and Vibration in Metal Turning Victor Lapshin a, *, Veronika Khristoforova b , Sergey Nosachev c Don State Technical University, 1 Gagarin square, Rostov-on-Don, 344000, Russian Federation a https://orcid.org/0000-0002-5114-0316 , lapshin1917@yandex.ru , b https://orcid.org/0000-0002-8611-1152, nikaapp@rambler.ru, c https://orcid.org/0000-0003-0302-2937, nosachev-s@yandex.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2020 vol. 22 no. 3 pp. 44–58 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2020-22.3-44-58 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 29 April 2020 Revised: 12 May 2020 Accepted: 07 June 2020 Available online: 15 September 2020 Keywords : Nonlinear dynamics Vibrations Cutting process Cutting temperature Funding This study was performed with fi nancial support of RFBR grant № 19-08-00022. ABSTRACT Introduction. The processes that occur in the machine when cutting metals are interconnected with each other. In the process of cutting, the complex dynamics of processing includes both rapidly changing factors and factors that are more evolutionary (slow) in nature. By such factors the following is meant: changes in stationary components of cutting forces, temperature in the processing zone and tool wear. There is no single and consistent mathematical model describing this connectivity today. Therefore, the paper proposes an approach based on the processing of experimental data obtained in a series of experiments, which allows to identify the structure of feedbacks formed during cutting and linking subsystems that describe the force, heat and vibration responses from the cutting process to the shaping movements of the tool. Purpose of work: Due to the formation of a consistent model of communication between subsystems that describe the force, heat and vibration responses from the cutting process to the shaping movements of the tool, to obtain a description of the mechanism of self-organization of the cutting process in the process of evolutionary changes of the tool. The resulting mechanism is needed to fi nd a certain mode of operation of the cutting system, in which further wear of the wedge, cutting force, temperature in the cutting zone and tool vibration can be stabilized. The paper examines: the process of metal processing by cutting on a lathe for the case of longitudinal turning of the product. Research methods: the Research consists of a series of fi eld experiments on real equipment using a modern measuring stand STD.201-1, which allows simultaneously measuring the force, temperature and vibration components of the reaction from the cutting process to the shaping movements of the tool. For processing and analysis of the experimental data obtained, a package of mathematical programs Matlab is used, in which a subroutine is developed that allows spectral analysis of vibration signals, as well as graphical interpretation of the measured values. Results and discussion. The results of processing experimental data, in particular, the spectra of vibration signals, obtained the dependence of forces and temperature on tool wear, and also revealed the effect of wear on the vibration dynamics of the cutting process. The in fl uence of vibration energy of the tool on the temperature fi eld in the cutting zone is estimated. The main conclusion of the work is the position put forward by us about the self-organization of the cutting system, through the process of tool evolution, which is expressed in the wear of the wedge, the purpose of which is the formation of a certain quasi-stationary cutting mode. For citation: Lapshin V.P., Khristoforova V.V., Nosachev S.V. Relationship of temperature and cutting force with tool wear and vibration in metal turning. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2020, vol. 22, no. 3, pp. 44–58. DOI: 10.17212/1994-6309-2020-22.3-44-58. (In Russian). ______ * Corresponding author Lapshin Viktor P., Ph.D. (Engineering), Associate Professor Don State Technical University, 1 Gagarin square 344000, Rostov-on-don, Russian Federation Tel.: 8 (900) 122-75-14, e-mail: lapshin1917@yandex.ru