Structural synthesis and analysis of the self-aligning mechanisms mobility based on the structural grоups for various branches of technology
Authors: Pozhbelko V.I. | Published: 13.07.2024 |
Published in issue: #7(772)/2024 | |
Category: Mechanical Engineering and Machine Science | Chapter: Machine Science | |
Keywords: structural synthesis, mobility analysis, redundant connections, lever multi-circuit mechanisms |
Structural synthesis and analysis of the multi-link mechanisms mobility is the primary and most difficult stage in their design. Traditional design of mechanisms based on intuition and selection of the separate ready-made kinematic schemes from the reference books is not optimal and leads to constructing complex structures with harmful redundant connections, which increases complexity in manufacture and assembly, as well as loads, friction and wear of the machine corners. The paper proposes a new approach to creation of the self-aligning mechanisms; it consists in the directed optimal synthesis of structural schemes without the redundant connections. It shows unlimited possibility of its use in formation of the flat and spatial mechanisms in mechanical engineering. Examples are provided of the proposed approach effective application in creating mechanisms at the invention level for various fields of technology: parallel structure mechanisms, platform and folding manipulators, grabs and vibration mixers.
EDN: XFUCUU, https://elibrary/xfucuu
References
[1] Artobolevskiy I.I. Teoriya mekhanizmov i mashin [Theory of mechanisms and machines]. Moscow, URSS Publ., 2019. 640 p. (In Russ.).
[2] Assur L.V. Issledovanie ploskikh sterzhnevykh mekhanizmov s nizshimi parami s tochki zreniya ikh struktury i klassifikatsii [Study of flat bar mechanisms with inferior pairs in terms of their structure and classification]. Moscow, Izd-vo AN SSSR Publ., 1952. 529 p. (In Russ.).
[3] Glazunov V.A., ed. Novye mekhanizmy v sovremennoy robototekhnike [New mechanisms in modern robotics]. Moscow, Tekhnosfera Publ., 2018. 315 p. (In Russ.).
[4] Kozhevnikov S.N. Osnovaniya strukturnogo sinteza mekhanizmov [Fundamentals of structural synthesis of mechanisms]. Kiev, Naukova Dumka Publ., 1979. 231 p. (In Russ.).
[5] Kraynev A.F. Mekhanika mashin. Fundamentalnyy slovar [Mechanics of machines. Fundamental dictionary]. Moscow, Mashinostroenie Publ., 2000. 903 p. (In Russ.).
[6] Timofeev G.A., ed. Teoriya mekhanizmov i mekhanika mashin [Theory of mechanisms and machine mechanics]. Moscow, Bauman MSTU Publ., 2017. 566 p. (In Russ.).
[7] Kolovskiy M.Z., Evgrafov A.N., Semenov Yu.A. et al. Teoriya mekhanizmov i mashin [Theory of mechanisms and machines]. Moscow, Akademiya Publ., 2006. 560 p. (In Russ.).
[8] Vulfson I.I., Erikhov M.L., Kolovskiy M.Z. et al. Mekhanika mashin [Mechanics of machines]. Moscow, Vysshaya shkola Publ., 1996. 511 p. (In Russ.).
[9] Pozhbelko V.I. Inertsionno-impulsnye privody mashin s dinamicheskimi svyazyami [Inertia-pulse drives of machines with dynamic linkages]. Moscow, Mashinostroenie Publ., 1989. 132 p. (In Russ.).
[10] Peysakh E.E., Nesterov V.A. Sistema proektirovaniya ploskikh rychazhnykh mekhanizmov [Flat lever mechanism design system]. Moscow, Mashinostroenie Publ., 1988. 230 p. (In Russ.).
[11] Reshetov L.N. Samoustanavlivayushchiesya mekhanizmy [Self-aligning mechanisms]. Moscow, Mashinostroenie Publ., 1979. 334 p. (In Russ.).
[12] Smelyagin A.I. Struktura mashin, mekhanizmov i konstruktsii [Structure of machines, mechanisms and design]. Moscow, Infra-M Publ., 2019. 387 p. (In Russ.).
[13] Kong X., Gosselin C. Type synthesis of parallel mechanisms. Springer, 2007. 276 p.
[14] Pozhbelko V.I. A unified structure theory of multibody open-, closed-, and mixed-loop mechanical systems with simple and multiple joint kinematic chains. Mech. Mach. Theory, 2016, vol. 100, pp. 1–16, doi: http://doi.org/10.1016/j.mechmachtheory.2016.01.001
[15] Pozhbelko V.I. Universal algorithm for the synthesis of structural schemes of complex single and multi-moving lever mechanisms. Sovremennoe mashinostroenie. Nauka i obrazovanie, 2022, no. 11, pp. 91–100. (In Russ.).
[16] Umnov N.V., Silvestrov E.E. [Using homotopy methods for mechanism synthesis.]. Sb. dok. mezhd. konf. po teorii mekhanizmov i mashin [Proc. Int. Conf. on. Mechanisms and Machine Theory]. Krasnodar, Kubanskiy GTU Publ., 2006, pp. 47–48. (In Russ.).
[17] Pozhbelko V. Type synthesis method of planar and spherical mechanisms using the universal structural table with all possible link assortments. IFToMM WC-2019. Springer, 2019, pp. 1517–1526, doi: https://doi.org/10.1007/978-3-030-20131-9_150
[18] Pozhbelko V. A new molecular approach for creative design of multiloop linkages and planetary gear mechanisms via novel NTG-Graph representation. MMSE-2023. Springer, 2023, pp. 21–34, doi: https://doi.org/10.1007/978-3-031-48851-1_3
[19] Pozhbelko V.I. A unified theory of structure, synthesis and analysis of multibody mechanical systems with geometrical, flexible and dynamic connections. Part 2. Limiting theorems and existence areas. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [BMSTU Journal of Mechanical Engineering], 2020, no. 11, pp. 36–52, doi: http://doi.org/10.18698/0536-1044-2020-11-36-52 (in Russ.).
[20] Pozhbelko V., Kuts E. A new general methodology for the topological structure analysis of multiloop mechanisms with multiple joints and crossing links. In: New advances in mechanisms, mechanical transmissions and robotics. Springer, 2020, pp. 155–163, doi: https://doi.org/10.1007/978-3-030-60076-1_14
[21] Pozhbelko V.I. Sharnirnyy platformennyy manipulyator [Hinged platform manipulator]. Patent RU 2751782. Appl. 07.07.2020, publ. 16.07.2021. (In Russ.).
[22] Pozhbelko V.I. Sharnirnyy mnogovershinnyy mekhanizm [Hinged multiple mechanism]. Patent RU 2777123. Appl. 07.04.2022, publ. 01.08.2022. (In Russ.).
[23] Pozhbelko V.I. Sharnirnyy mekhanizm [Pivot mechanism]. Patent RU 2753064. Appl. 24.02.2021, publ. 11.08.2021. (In Russ.).
[24] Pozhbelko V.I. Prostranstvennyy manipulyator [Spatial manipulator]. Patent RU 2758377. Appl. 24.02.2021, publ. 28.10.2021. (In Russ.).
[25] Pozhbelko V.I. Prostranstvennyy manipulyator otnositelnogo manipulirovaniya [Spatial relative manipulator]. Patent RU 2758374. Appl. 24.02.2021, publ. 28.10.2021. (In Russ.).
[26] Pozhbelko V.I. Dvukhpodvizhnaya vrashchatelnaya kinematicheskaya para [Two-degrees-of-freedom rotational kinematic pair]. Patent RU 2755441. Appl. 16.03.2021, publ. 16.09.2021. (In Russ.).