In view of the problems of small output displacement and low clamping accuracy of traditional microgripper

a large displacement and high precision three-stage amplification asymmetric micro clamp is designed.Firstly

the structure design of the microgripper is completed

and the theoretical magnification of the microgripper is calculated based on the pseudo rigid body model.Secondly

the structure parameters are optimized by finite element method to obtain the optimal parameters.Finally

the performance of the microgripper is analyzed by finite element method.The results show that the working space of the microgripper is large

sensitive in response and can be held parallel.The maximum output displacement is 381.97 μm when there is no clamping object at 150 V maximum voltage μm.The actual amplification ratio is 19.1 times.Compared with the same products

it has a higher magnification and higher clamping accuracy.