Investigation of complex surfaces of propellers of vehicles by a mechatronic profilograph

OBRABOTKAMETALLOV Vol. 23 No. 4 2021 77 EQUIPMENT. INSTRUMENTS References 1. Ke Y., Fan S., ZhuW., Li A., Liu F., Shi X. Feature-based reverse modeling strategies. Computer-Aided Design , 2006, vol. 38, iss. 5, pp. 485–506. DOI: 10.1016/j.cad.2005.12.002. 2. Jeyapoovan T., Murugan M. Surface roughness classi fi cation using image processing. Measurement , 2013, vol. 46 (7), pp. 2065–2072. DOI: 10.1016/j.measurement.2013.03.014. 3. Lushnikov N., Lushnikov P. Methods of assessment of accuracy of road surface roughness measurement with pro fi lometer. Transportation Research Procedia , 2017, vol. 20, pp. 425–429. DOI: 10.1016/j.trpro.2017.01.069. Investigation of complex surfaces of propellers of vehicles by a mechatronic pro fi lograph Sergey Vasiliev a, * , Viktor Alekseev b , Alyona Fedorova c , Dmitry Lobanov d I. N. Ulianov Chuvash State University, 15 Moskovsky Prospect, Cheboksary, 428015, Russian Federation a https://orcid.org/0000-0003-3346-7347, vsa_21@mail.ru , b https://orcid.org/0000-0002-2780-1727, av77@list.ru, c https://orcid.org/0000-0002-0257-9197, e_a_a@mail.ru , d https://orcid.org/0000-0002-4273-5107, lobanovdv@list.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2021 vol. 23 no. 4 pp. 65–78 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2021-23.4-65-78 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 09 September 2021 Revised: 02 October 2021 Accepted: 16 October 2021 Available online: 15 December 2021 Keywords : Mechatronic pro fi lograph Complex surfaces Reverse engineering Propellers Vehicles Funding The results were obtained under the grant of the President of the Russian Federation for state support of young Russian scientists MD-1198.2020.8, agreement No. 075-15-2020-228 Acknowledgements Research were conducted at core facil- ity “Structure, mechanical and physi- cal properties of materials”. ABSTRACT Introduction. The technology of investigation of screw propellers complex surfaces, which include the marine and aircraft propellers of vehicles, mechatronic pro fi lers for the implementation of reverse engineering, is considered. A review of the scienti fi c literature shows that at present the problem of monitoring complex surfaces of products at various stages of its life cycle requires further research, since the use of available devices and methods does not always provide the necessary accuracy, technological effectiveness and suf fi cient information on measurements. The purpose of the work is to develop a new technology for studying complex surfaces of propellers, which include marine and aircraft propellers of vehicles by means of a mechatronic pro fi lograph to implement reverse engineering. Methods. The paper considers the implementation of the innovative technology for studying complex surfaces of propellers using the developed mechatronic pro fi lograph. This ingenious mechatronic pro fi lograph is designed to measure the pro fi le and study the shape of complex surfaces of various products, as well as to determine the geometric and morphological parameters of these surfaces. On the basis of theoretical studies the main design and technological parameters are found and the hyperbolic dependence of the angular rate of the laser sensor movement on the scanning radius is determined for the developed mechatronic pro fi lograph. For example, if a constant pitch of the trajectory along the Archimedes spiral is 2 mm, the value of the sensor angular rate should gradually decrease from the maximum value of 2 rad/s to the minimum value of 0.574 rad/s, i.e. by 3.484 times. Results and discussion. It is revealed that the use of cylindrical coordinates for processing the obtained data by a pro fi lograph is logical and has a number of advantages. An express analysis of the propeller surfaces with rotary symmetry is carried out and differences in the shapes of the surfaces of the propeller blades by deviation values in the longitudinal and transverse directions for different radii are established. On the basis of the experimental data, a two-factor power model describing deviations with a determination coef fi cient of 0.967 is obtained, according to its analysis, it is clear that on average the angle of deviation in the perpendicular direction to the radius δ – increases from 0 to 0.3  , and the angle of deviation along the radius γ increases from 0 to 5.4  . For citation: Vasiliev S.A., Alekseev V.V., Fedorova A.A., Lobanov D.V. Investigation of complex surfaces of propellers of vehicles by a mechatronic pro fi lograph. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2021, vol. 23, no. 4, pp. 65–78. DOI: 10.17212/1994-6309-2021-23.4-65-78. (In Russian). ______ * Corresponding author Vasiliev Sergey A. , D.Sc. (Engineering), Associate Professor, I. N. Ulianov Chuvash State University, 15 Moskovsky Prospect, 428015, Cheboksary, Russia Tel.: +7-927-843-22-90, e-mail: vsa_21@mail.ru