关键词: 柔顺并联机构, 三自由度, 刚体替换法, 柔性铰链, 设计

Abstract: Rigid body displacement method is one of the important methods of compliant mechanism design. Based on rigid body displacement method, choosing the proper space configuration, using the proper flexible joint to replace the rigid motion, then a compliant parallel mechanism micro platform was designed with three degrees of freedom by calculating the freedom of spatial parallel mechanisms based on Kutzbach Grubler theory. The displacement data of moving platform output node was obtained and the movement precision of the parallel mechanism with three degrees of freedom was validated to meet the design requirements by using the ANSYS Workbench through analyzing the stress and diaplacement of flexible side chain and micro platform. The parameters obtained from the analysis could provide a reference for the optimization of the compliant parallel mechanism with multiple degrees of freedom, and it also provided reference for the design of parallel mechanism with multiple degrees of freedom.

Key words: Flexible parallel mechanisms, Three degrees of freedom, Rigid body displacement method, Flexible hinge, Design