Aiming at the problems that output displacement of traditional symmetrical microgripper is large

but it is easy to destroy the micro-components or parts because of the uneven force on the left and right jaws

and output displacement of traditional asymmetrical microgripper is small

but the output force of the grasping jaw is stable

a large displacement asymmetric microgripper is designed. Firstly

relationship between theoretical input displacement and theoretical output displacement is calculated by geometric relationship; secondly

modeling is carried out. Finally

the performance of the micro-clamp is obtained by simulation analysis on the model. The theoretical amplification ratio of the designed microgripper is 12. 34 and the simulation amplification ratio is11. 56. Compared with the theoretical calculation

the error of simulation results is 6. 32 %

which proves the correctness of the theoretical calculation and the validity of the design.