Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity
Rotate vector (RV) reducers are typical deceleration elements that moderate and increase torsion. They are widely applied in industrial robots and automatic machinery with the superiorities of compact structure, high precision, and overload resistance performance. However, the RV reducers also have...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2024-01-01
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| Series: | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jamdsm/18/2/18_2024jamdsm0015/_pdf/-char/en |
| _version_ | 1827298890730176512 |
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| author | Song GAO Yueming ZHANG Shuting JI Yiwan LI Wentai LI |
| author_facet | Song GAO Yueming ZHANG Shuting JI Yiwan LI Wentai LI |
| author_sort | Song GAO |
| collection | DOAJ |
| description | Rotate vector (RV) reducers are typical deceleration elements that moderate and increase torsion. They are widely applied in industrial robots and automatic machinery with the superiorities of compact structure, high precision, and overload resistance performance. However, the RV reducers also have disadvantages, such as low bearing capacity and short service life. As the core drive mechanism in an RV reducer, the bearing capacity for a cycloid-pin gear drive system directly affects the performance of the entire deceleration system. Therefore, the bearing capacity of an RV reducer should be improved by increasing the capacity of a cycloid-pin gear. In this paper, the design of a cycloid-pin gear is optimized to improve its bearing capacity. The tooth profile equations for cycloid gear and the meshing gap are derived based on the gear meshing principle. The bearing capacity for cycloid-pin gear is modeled by combining the contact strength theory with the multi-tooth contact bearing analysis. The effects of eccentricity, the radius of pin tooth distribution circle, pin teeth number, pin tooth radius, cycloid thickness, modification value of moved distance and equidistance on total volume, contact stress, and torsional stiffness are systematically researched. Then, a single-, double-, and three-objective optimization model is proposed based on the load-bearing capacity for cycloid-pin gear by taking these three factors as the objective function. Moreover, the parameters are optimized with the genetic algorithm, and the analyses for three optimizations are compared and discussed. The theoretical models are confirmed by the simulation analysis through ANSYS software. The results show that the bearing capacity for the cycloid-pin gear system can be largely enhanced after optimization. |
| first_indexed | 2024-04-24T15:23:49Z |
| format | Article |
| id | doaj.art-c18aebab63f94705b2351e74f63a18a1 |
| institution | Directory Open Access Journal |
| issn | 1881-3054 |
| language | English |
| last_indexed | 2024-04-24T15:23:49Z |
| publishDate | 2024-01-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Advanced Mechanical Design, Systems, and Manufacturing |
| spelling | doaj.art-c18aebab63f94705b2351e74f63a18a12024-04-02T07:11:26ZengThe Japan Society of Mechanical EngineersJournal of Advanced Mechanical Design, Systems, and Manufacturing1881-30542024-01-01182JAMDSM0015JAMDSM001510.1299/jamdsm.2024jamdsm0015jamdsmMulti-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacitySong GAO0Yueming ZHANG1Shuting JI2Yiwan LI3Wentai LI4Faculty of Materials and Manufacturing, Beijing University of TechnologyFaculty of Materials and Manufacturing, Beijing University of TechnologyFaculty of Materials and Manufacturing, Beijing University of TechnologyCourse of Mechanical Engineering, Graduate School of Beijing University of TechnologyCourse of Mechanical Engineering, Graduate School of Beijing University of TechnologyRotate vector (RV) reducers are typical deceleration elements that moderate and increase torsion. They are widely applied in industrial robots and automatic machinery with the superiorities of compact structure, high precision, and overload resistance performance. However, the RV reducers also have disadvantages, such as low bearing capacity and short service life. As the core drive mechanism in an RV reducer, the bearing capacity for a cycloid-pin gear drive system directly affects the performance of the entire deceleration system. Therefore, the bearing capacity of an RV reducer should be improved by increasing the capacity of a cycloid-pin gear. In this paper, the design of a cycloid-pin gear is optimized to improve its bearing capacity. The tooth profile equations for cycloid gear and the meshing gap are derived based on the gear meshing principle. The bearing capacity for cycloid-pin gear is modeled by combining the contact strength theory with the multi-tooth contact bearing analysis. The effects of eccentricity, the radius of pin tooth distribution circle, pin teeth number, pin tooth radius, cycloid thickness, modification value of moved distance and equidistance on total volume, contact stress, and torsional stiffness are systematically researched. Then, a single-, double-, and three-objective optimization model is proposed based on the load-bearing capacity for cycloid-pin gear by taking these three factors as the objective function. Moreover, the parameters are optimized with the genetic algorithm, and the analyses for three optimizations are compared and discussed. The theoretical models are confirmed by the simulation analysis through ANSYS software. The results show that the bearing capacity for the cycloid-pin gear system can be largely enhanced after optimization.https://www.jstage.jst.go.jp/article/jamdsm/18/2/18_2024jamdsm0015/_pdf/-char/enrotate vector reducermodified cycloid-pin gearload bearing capacitymeshing principlemulti-objective optimizationgenetic algorithmsystem design |
| spellingShingle | Song GAO Yueming ZHANG Shuting JI Yiwan LI Wentai LI Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity Journal of Advanced Mechanical Design, Systems, and Manufacturing rotate vector reducer modified cycloid-pin gear load bearing capacity meshing principle multi-objective optimization genetic algorithm system design |
| title | Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity |
| title_full | Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity |
| title_fullStr | Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity |
| title_full_unstemmed | Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity |
| title_short | Multi-objective optimized design for modified cycloid-pin gear drive mechanism based on load-bearing capacity |
| title_sort | multi objective optimized design for modified cycloid pin gear drive mechanism based on load bearing capacity |
| topic | rotate vector reducer modified cycloid-pin gear load bearing capacity meshing principle multi-objective optimization genetic algorithm system design |
| url | https://www.jstage.jst.go.jp/article/jamdsm/18/2/18_2024jamdsm0015/_pdf/-char/en |
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