Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences
This study proposes a solution for the transmission of rotation motion between two shafts with crossed directions. For constructive simplicity, the solutions including the planar pair were preferred and, from the two variants, namely structurally symmetric, revolute–planar–revolute (RPR), or asymmet...
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MDPI AG
2023-07-01
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| Series: | Axioms |
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| Online Access: | https://www.mdpi.com/2075-1680/12/7/707 |
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| author | Stelian Alaci Ioan Doroftei Florina-Carmen Ciornei Ionut-Cristian Romanu Toma-Marian Ciocirlan Mariana-Catalina Ciornei |
| author_facet | Stelian Alaci Ioan Doroftei Florina-Carmen Ciornei Ionut-Cristian Romanu Toma-Marian Ciocirlan Mariana-Catalina Ciornei |
| author_sort | Stelian Alaci |
| collection | DOAJ |
| description | This study proposes a solution for the transmission of rotation motion between two shafts with crossed directions. For constructive simplicity, the solutions including the planar pair were preferred and, from the two variants, namely structurally symmetric, revolute–planar–revolute (RPR), or asymmetric RRP, the last was selected. The resulting solution, RPRRR, is a non-Denavit–Hartenberg (non-D–H) mechanism. The D–H methodology is laborious since the structure of the equivalent mechanism is more complex than the actual one. For this reason, in the present paper, the kinematic analysis of the mechanism uses geometrical conditions of existence of the planar pair. The system is solved analytically and two main conclusions result: for a set of constructive data and a stipulated position of the driving element, two different assembling positions exist and a rotation motion occurs in the final revolute joint, but in the internal revolute pairs, the motion is oscillatory. The correctness of the theoretical results was corroborated by a CATIA model. The mechanism was also constructed and smooth running was noticed. Two main concerns were considered for the design of the mechanism: avoiding mechanical interference between the elements and estimating the stresses and deformations. |
| first_indexed | 2024-03-11T01:18:38Z |
| format | Article |
| id | doaj.art-6fb93b80d7cd41699aa6a60505faffad |
| institution | Directory Open Access Journal |
| issn | 2075-1680 |
| language | English |
| last_indexed | 2024-03-11T01:18:38Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Axioms |
| spelling | doaj.art-6fb93b80d7cd41699aa6a60505faffad2023-11-18T18:18:20ZengMDPI AGAxioms2075-16802023-07-0112770710.3390/axioms12070707Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and ConsequencesStelian Alaci0Ioan Doroftei1Florina-Carmen Ciornei2Ionut-Cristian Romanu3Toma-Marian Ciocirlan4Mariana-Catalina Ciornei5Mechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, RomaniaMechanical Engineering, Mechatronics and Robotics Department, “Gheorghe Asachi” Technical University, 700050 Iasi, RomaniaMechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, RomaniaMechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, RomaniaMechanics and Technologies Department, “Stefan cel Mare” University of Suceava, 720229 Suceava, RomaniaPhysiology Department, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, RomaniaThis study proposes a solution for the transmission of rotation motion between two shafts with crossed directions. For constructive simplicity, the solutions including the planar pair were preferred and, from the two variants, namely structurally symmetric, revolute–planar–revolute (RPR), or asymmetric RRP, the last was selected. The resulting solution, RPRRR, is a non-Denavit–Hartenberg (non-D–H) mechanism. The D–H methodology is laborious since the structure of the equivalent mechanism is more complex than the actual one. For this reason, in the present paper, the kinematic analysis of the mechanism uses geometrical conditions of existence of the planar pair. The system is solved analytically and two main conclusions result: for a set of constructive data and a stipulated position of the driving element, two different assembling positions exist and a rotation motion occurs in the final revolute joint, but in the internal revolute pairs, the motion is oscillatory. The correctness of the theoretical results was corroborated by a CATIA model. The mechanism was also constructed and smooth running was noticed. Two main concerns were considered for the design of the mechanism: avoiding mechanical interference between the elements and estimating the stresses and deformations.https://www.mdpi.com/2075-1680/12/7/707shaft couplingplanar pairrevolute pairD–H algorithmCAD designnumerical simulation |
| spellingShingle | Stelian Alaci Ioan Doroftei Florina-Carmen Ciornei Ionut-Cristian Romanu Toma-Marian Ciocirlan Mariana-Catalina Ciornei Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences Axioms shaft coupling planar pair revolute pair D–H algorithm CAD design numerical simulation |
| title | Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences |
| title_full | Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences |
| title_fullStr | Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences |
| title_full_unstemmed | Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences |
| title_short | Proposed Shaft Coupling Based on RPRRR Mechanism: Positional Analysis and Consequences |
| title_sort | proposed shaft coupling based on rprrr mechanism positional analysis and consequences |
| topic | shaft coupling planar pair revolute pair D–H algorithm CAD design numerical simulation |
| url | https://www.mdpi.com/2075-1680/12/7/707 |
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