CAI Xiang,GAO Bo,SHI Zhixin. Design and analysis of 2T1R parallel mechanism with two kinds of translation characteristics[J]. Journal of Mechanical Transmission,2025,49(9):55-63.
CAI Xiang,GAO Bo,SHI Zhixin. Design and analysis of 2T1R parallel mechanism with two kinds of translation characteristics[J]. Journal of Mechanical Transmission,2025,49(9):55-63. DOI: 10.16578/j.issn.1004.2539.2025.09.007.
Design and analysis of 2T1R parallel mechanism with two kinds of translation characteristics
To address the issue that achieving curved translation in two-translation one-rotation (2T1R) parallel mechanisms requires complex curve-fitting algorithms
a novel mechanism capable of realizing curved translation by leveraging its inherent characteristics was designed.
Methods
2
Firstly
based on the parallel mechanism design theory of the position and orientation characteristic (POC) set equation
a 2T1R parallel mechanism with a symbolic forward position solution was designed. The topological properties of this mechanism
including its POC set
degree of freedom
and coupling degree
were analyzed. Secondly
following the kinematic modeling principles of topological structures
the symbolic forward and inverse position solution equations of the mechanism were derived
and their correctness was verified through numerical calculations. Finally
the curved translation and straight-line motion characteristics of the mechanism were validated using Matlab software.
Results
2
Test results demonstrate that the designed mechanism exhibits both straight-line and curved translation capabilities within its workspace
significantly simplifying the complexity of achieving curved translation and reducing the difficulty of control algorithms.
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