Designing and Manufacturing an Innovative Mechanism Consisting of Two Spur and Elliptical Gears for Use in Power Transmission Systems

Document Type : Original Article

Authors

Assistant Professor, Department of production and manufacturing engineering, Urmia University of Technology, Urmia, Iran.

10.48301/kssa.2023.390555.2494

Abstract

In the present research, the possibility of designing and manufacturing a gear mechanism including a unilobe elliptical gear and a spur gear was investigated. The innovation of this mechanism is the engagement of a circular gear with a non-circular gear and the creation of a continuous movement in one of the two shafts on which the gears are placed. First, the geometry of both gears was assessed and the two-dimensional cross-sectional model of the gears was drawn by Gearotic motion software. Then, 3D models of the gears were produced and assembled, followed by a scrutinization of the engagement of the gears, the proper design of teeth shapes, and the driven shaft movement. The wire electrical discharge machining was employed to manufacture the gears from the Al 7075. Next, the surface roughness of the gear teeth was measured and their engagement checked. The results revealed that the designed mechanism provides cyclic movement in the driven shaft of the spur gear during engagement with the elliptical gear. Moreover, the smooth and proper movement of the gears shows that the use of the software and the correct selection of the input parameters did not cause any errors in the manufacturing process. 

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References

[1] Goldfarb, V., Trubachev, E., & Barmina, N. (2020). New approaches to gear design and production. Springer. https://doi.org/10.1007/978-3-030-34945-5
[2] Vullo, V. (2020). Gears: Volume 1: Geometric and Kinematic Design. Springer. https://d oi.org/10.1007/978-3-030-36502-8
[3] Rackov, M., Mitrović, R., & Čavić, M. (2022). Machine and industrial design in mechanical engineering: Proceedings of KOD 2021. Springer. https://doi.org/10.1007/978-3-03 0-88465-9
[4] Khalilpourazary, S. (2020). Comprehensive introduction to machine tool concept. Urmia University of Technology Press. https://uut.ac.ir/book_treasure.php?mod=viewboo k&book_id=24316&slc_lang=fa&sid=1
[5] Addomine, M., Figliolini, G., & Pennestrì, E. (2018). A landmark in the history of non-circular gears design: The mechanical masterpiece of Dondi’s astrarium. Mechanism and Machine Theory, 122, 219-232. https://doi.org/10.1016/j.mechmachtheory.2017.12.027
[6] Litvin, F. L., Fuentes-Aznar, A., Gonzalez-Perez, I., & Hayasaka, K. (2014). Noncircular Gears: Design and Generation. Cambridge University Press. https://books.google.c om/books?id=p8MXngEACAAJ
[7] Maláková, S., Urbanský, M., Fedorko, G., Molnár, V., & Sivak, S. (2021). Design of Geometrical Parameters and Kinematical Characteristics of a Non-circular Gear Transmission for Given Parameters. Applied Sciences, 11(3), 1000. https://doi.org/10.3390/app11031 000
[8] Laczik, B. (2007). Design and manufacturing of non-circular gears by given transfer function. Tudományos közlemények,, 1-8. http://hdl.handle.net/10890/3514
[9] Gao, S., Saga, T., Ohmine, K., Tang, X., Chen, X., & Li, J. (2005, October 19-22). 3D-CAD and 5 Axis CAM of Non-Circular Gears. Proceedings of International Conference on Leading Edge Manufacturing in 21st century, Nagoya, Japan. https://doi.org/10.129 9/jsmelem.2005.2.325
[10] Xu, H., Fu, T., Song, P., Zhou, M., Fu, C-W., & Mitra, N. J. (2020). Computational Design and Optimization of Non-Circular Gears. Computer Graphics Forum, 39(2), 399-409. https://doi.org/10.1111/cgf.13939
[11] Bair, B-W. (2002). Computerized tooth profile generation of elliptical gears manufactured by shaper cutters. Journal of Materials Processing Technology, 122(2-3), 139-147. https://doi.org/10.1016/S0924-0136(01)01242-0
[12] Kapelevich, A. L. (2013). Direct Gear Design. Chemical Rubber Company Press. https:/ /books.google.com/books/about/Direct_Gear_Design.html?id=quie4Ad929cC
[13] Jelaska, D. T. (2012). Gears and gear drives. John Wiley & Sons. https://www.wiley.co m/en-us/Gears+and+Gear+Drives-p-9781118392713
[14] International Organization for Standardization. (2013). Cylindrical gears ISO system of flank tolerance classification Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth (ISO 1328-1:2013). ISO. https://www.iso.org/standa rd/45309.html#:~:text=ISO%201328%2D1%3A2013%20establishes,class%20system%2C%20and%20allowable%20values
[15] International Organization for Standardization. (2020). Cylindrical gears — ISO system of flank tolerance classification — Part 2: Definitions and allowable values of double flank radial composite deviations (ISO/DIS 1328-2). ISO. https://www.iso.org/obp/ ui#iso:std:iso:1328:-2:dis:ed-2:v1:en
[16] Radzevich, S. P. (2016). Dudley's handbook of practical gear design and manufacture (3 ed.). CRC press. https://books.google.com/books/about/Dudley_s_Handbook_of_P ractical_Gear_Desi.html?id=XysNDgAAQBAJ
[17] International Organization for Standardization. (2010). Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits (ISO 286-1:2010). ISO. https://www.iso.org/obp/ui/#iso:std:iso: 286:-1:ed-2:v1:en
[18] American Gear Manufacturers Association, & American National Standards Institute. (2004). Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth (ANSI/AGMA 2001-C95). American Gear Manufacturers Association. https://wp.kntu.ac.ir/asgari/AGMA%202001-D04.pdf
[19] Goldfarb, V., Trubachev, E., & Barmina, N. (2018). Advanced gear engineering. Springer. https://doi.org/10.1007/978-3-319-60399-5
[20] International Organization for Standardization. (1996). Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture (ISO 4288:1996). ISO. https://www.iso.org/standard/2096.html
[21] Meriam, J. L., Kraige, L. G., & Bolton, J. N. (2020). Engineering Mechanics: Dynamics (9 ed.). John Wiley & Sons. https://books.google.com/books?id=oB7zDwAAQBAJ
Karafan Quarterly Scientific Journal
Volume 20, Issue 3
Engineering
December 2024
Pages 169-192

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History

  • Receive Date: 09 April 2023
  • Revise Date: 18 July 2023
  • Accept Date: 04 October 2023

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