OBRABOTKAMETALLOV Vol. 24 No. 2 2022 TECHNOLOGY Machining technology, digital modelling and shape control device for large parts Sergey Timofeev 1, a, Anna Grinek 2, b, *, Andrej Hurtasenko 3, d , Igor Boychuk 2, с 1 Limited Liability Company «Promagro», 370а Rzhevskoe shosse, Shebekino, 309290, Russian Federation 2 Admiral Ushakov State Maritime University, 93 Lenin’s avenue, Novorossiysk, 353918, Russian Federation 3 Belgorod State Technological University named after V.G. Shukhov, 46 Kostyukova st., Belgorod, 308012, Russian Federation a https://orcid.org/0000-0002-6740-5163, timofeevsp@inbox.ru, b https://orcid.org/0000-0001-7953-3501, grinyokann@gmail.com, c https://orcid.org/0000-0002-2614-5457, hurtintbel@mail.ru, d https://orcid.org/0000-0002-1996-2184, boychuk@ieee.org Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ART I CLE I NFO Article history: Received: 16 February 2022 Revised: 14 March 2022 Accepted: 23 March 2022 Available online: 15 June 2022 Keywords: Digital simulation Large parts Riding ring Shape measurement Mechanical restoration ABSTRACT Introduction. The development of a method for controlling the accuracy parameters of large axisymmetric bodies is an urgent task that is being solved by specialists from various industries. Application for adjustment and correction of machining based on the measurement of surface shape parameters directly during machining is shown. Purpose of work is to improve mobile processing technologies using special measuring devices and processing module. For this, the problems of development and analysis of mathematical models that describe the process of basing and machining of a riding ring as a cylindrical object with a non-stationary axis of rotation is solved. A study of the methodology is carried out, control schemes are designed, and equipment for processing mobile devices is developed. The methods of research are the analysis of the developed mathematical models, taking into account the assignment of effective technological modes. Three-dimensional and simulation modeling of processing, hardwaresoftware implementation of proposed solutions, and statistical processing of measurement results are carried out. Results and discussion. The algorithm and methodology are tested with a three-dimensional simulation model. The presented methodology for measuring and calculating the allowance for mechanical restoration can signifi cantly reduce machining time compared to active form control and compared to the traditional method of assigning an allowance for machining. The measurement and adjustment of the allowance based on the measurement data is not carried out after each measurement, but only in the case of transition to fi nishing transitions or for accuracy control. It is determined that by providing a single technological base for each individual technological transition within the framework of the mobile technology of machining of the rolling surface of the riding rings of technological drums, the accuracy and speed of processing increase. An original design of the device for monitoring parameters is developed; an experimental assembly and a laboratory model of the riding ring are made. For citation: Timofeev S.P., Grinek A.V., Hurtasenko A.V., Boychuk I.P. Machining technology, digital modelling and shape control device for large parts. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2022, vol. 24, no. 2, pp. 6–24. DOI: 10.17212/1994-6309-2022-24.2-6-24. (In Russian). Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2022 vol. 24 no. 2 pp. 6–24 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2022-24.2-6-24 ______ * Corresponding author Grinek Anna V., Ph.D. (Engineering), Associate Professor Admiral Ushakov State Maritime University, 93 Lenin’s avenue, 353918, Novorossiysk, Russian Federation Tel.: +7-960-637-38-82, e-mail: grinyokann@gmail.com Introduction Large tubular, drum-type rotating units ranging in length from several tens to several hundred meters are used in a number of industries [1, 2]. Its characteristic feature is a unifi ed operating principal, which includes continuous movement of large masses of material with its parallel treatment: heating, grinding, washing [3, 4]. The development of a method to control the accuracy parameters of large rotary bodies is an urgent task being solved by specialists from various industries [5]. The shape defects are associated not only with large size and weight, but also with the location conditions of the units, under which the position of the rotation axis is not constant. This factor also determines the specifi cs of the work to ensure the accuracy
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