Optimal Design of a Novel Flexible Dual-axis Micro-gripper

This paper presents a flexible dual-axis micro-gripper based on one piezoelectric ceramic actuator driven, which is simple and compact in structure to realize grasping-revolving micro-operation. The micro-gripper is an asymmetrical structure, it's left part achieving revolving function and right part finishing grasping function. The size of the whole mechanism is optimized and designed by genetic algorithm (GA) and finite element model (FEM). The simulation results show that the left mechanism's amplification ratio is 7.27, The right mechanism's amplification ratio is 8.96, and the maximum output displacement is 179.33 mu m. The designed micro-gripper owns excellent grasping performance, and can achieve high-precision grasping-releasing operation.