GUO Yue,LI Ju,SHEN Huiping. Topological design and analysis of a novel 2T1R parallel mechanism with symbolic position solutions and motion decoupling[J]. Journal of Mechanical Transmission,2025,49(9):38-46.
GUO Yue,LI Ju,SHEN Huiping. Topological design and analysis of a novel 2T1R parallel mechanism with symbolic position solutions and motion decoupling[J]. Journal of Mechanical Transmission,2025,49(9):38-46. DOI: DOI:10.16578/j.issn.1004.2539.2025.09.005.
Topological design and analysis of a novel 2T1R parallel mechanism with symbolic position solutions and motion decoupling
The two-translation-one-rotation (2T1R) parallel mechanism shows good engineering application potential due to its simple structure and low cost
but the current research on new 2T1R mechanism configurations lags behind
contrasting sharply with the research enthusiasm for 1T2R mechanisms. To fill the research gap of 2T1R parallel mechanisms
a pure lower-pair constructed 2T1R parallel mechanism was designed based on the theory of position and orientation characteristic (POC) set to meet the diversified requirements of engineering applications for mechanism performance.
Methods
2
Firstly
the topological structure of the mechanism was systematically analyzed using topological analysis methods
and key topological features were extracted. Then
a kinematic model was constructed based on topological features
and symbolic forward and inverse position solutions of the mechanism were derived
followed by solving the velocity and acceleration of the moving platform. On this basis
the geometric parameters of the workspace and singular configurations of the mechanism were determined through theoretical analysis. The driving force variation law of the mechanism was solved by means of dynamic modeling. Finally
the conceptual design of the mechanism was completed in combination with practical application scenarios.
Results
2
The study shows that the pure lower-pair 2T1R parallel mechanism not only has the characteristic of symbolic forward position solution
but also can realize partial motion decoupling with excellent dynamic performance. Meanwhile
its advantages of low cost and large operation space are significant
providing reference and practical guidance for subsequent mechanism optimization design and engineering application.
关键词
Keywords
references
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