Obrabotka Metallov. 2016 no. 2(71)

ОБРАБОТКА МЕТАЛЛОВ № 2 (71) 2016 49 ОБОРУДОВАНИЕ. инструменты OBRABOTKAMETALLOV (METAL WORKING AND MATERIAL SCIENCE) N 2 (71), April – June 2016, Pages 41–50 The methods of technological machines’ rotors balance Podgornyj Yu. I. 1, 2 , D.Sc. (Engineering), Professor, e-mail: pjui@mail.ru Martynova T.G. 1 , Ph.D. (Engineering),Associate Professor, e-mail: tatyanamartynova1511@gmail.com Skeeba V. Yu. 1 , Ph.D. (Engineering), Associate Professor, e-mail: skeeba_vadim@mail.ru Lobanov D. V. 3 , D.Sc. (Engineering), Professor, e-mail: mf_nauka@brstu.ru Zhirova A.A. 1 , Master’s Degree student, e-mail: zhirova.nastasya@mail.ru Bredikhina A.N. 1 , Student, e-mail: nyura.bredihina@yandex.ru Kosilov A.S. 1 , Student, e-mail: kosilov_sanya@mail.ru Pechorkina N.S. 1 , Student, e-mail: pechorkina94@yandex.ru 1 Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian Federation 2 Novosibirsk Technological Institute (branch) Moscow State University of Design and Technology, 35 Krasny prospect (5 Potaninskaya st.), Novosibirsk, 630099, Russian Federation 3 Bratsk State University, 40 Makarenko st., Bratsk, 665709, Russian Federation Abstract Purpose: The rotors of technological machines, including low-speed ones, which are fairly long, need to be balanced. In this regard, the main task of the study is to develop a method for determining the values of correction imbalances, adjusting the rotors of technological machines. Methods: A method of balancing the rotor of the technological machine in the case of the actuating device of the two-shaft continuous mixer is presented. Within the system of three-dimensional modeling the values of the mass/inertia data of the rotor elements are obtained upon which the simulation model is built in the form of a rotor imbalance three dimentional system. On the basis of the developed model the obtained imbalance plans are reduced to two flat systems. The values of the correction imbalances are determined. The proposed method allows to determine the conditions of complete rotor balancing; obtain graphical and analytical percent dependence of the maximum and minimum variations of correction imbalances at various manufacturing accuracy of the main shaft elements with approximation reliability of 0,95 to 0,99. Results: According to these data and using computer modeling it is recommended to determine the inertial mass characteristics of the designed structure. Then, in accordance with the proposed methodology and the actual figures of the shaft elements it is necessary to choose two reference planes in order to determine the vector values and directions of two-plane imbalance by means of a graphic method for torque polygon construction. Blade scrapers are used as correction imbalances. Conclusions: The studies have revealed that when reducing manufacturing accuracy of the main shaft elements the expected deviation of correction imbalances increases and may reach 75 %. The grade of manufacturing accuracy of kneading blades for various angular shaft speeds. Keywords rotor balance, simulation model, adjusting disbalance, datum plane, balance DOI: 10.17212/1994-6309-2016-2-41-50 References 1. Grekov Yu.M., Radchik I.I., Trunin E.S., Bol’shakov O.V. Balancing a high-speed rotor on a balancing ma- chine. Power Technology and Engineering , 2015, vol. 49, iss. 1, pp. 57–60. doi: 10.1007/s10749-015-0574-6 2. Darlow M.S. Balancing of high-speed machinery . NewYork, Springer-Verlag, 1989. 185 p. ISBN 978-1-4612- 8194-8. doi: 10.1007/978-1-4612-3656-6 3. Podgornyj Yu.I., Martynova T.G., Skeeba V.Yu., Pushnin V.N., Vakhrushev N.V., Kornev D.Yu., Zaitsev E.K. Opredelenie osnovnykh parametrov tekhnologicheskogo oborudovaniya [Determination of the main parameters of the processing equipment]. Obrabotka metallov (tehnologiya, oborudovanie, instrumenty) – Metal Working and Ma- terial Science , 2013, no. 3 (60), pp. 68–73. 4. Friswell M.I., Penny J.E.T., Garvey S.D., Lees A.W. Dynamics of rotating machines . Cambridge, Cambridge University Press, 2010. 544 p. ISBN 978-0-5218-5016-2