Design of large-displacement asymmetric piezoelectric microgripper based on flexible mechanisms

查看全文 作　　者：Xiaodong [1]Chen;Siya [1]Hu;Zilong [1]Deng;Jinhai [2]Gao;Xingjun [1]Gao

机构地区：[1]College of Mechanical Engineering,Liaoning University of Petroleum and Chemical Technology,Fushun 113001,China;[2]College of Mechanical Engineering and Automation,Northeast University,Shenyang 110000,China

出　　处：《Nanotechnology and Precision Engineering》索引2019年第2卷第4期,共6页

基　　金：Liaoning Provincial Education Department (L2017LQN024) 摘　　要：The output displacement of the traditional symmetrical microgripper is large,but its micro-components or parts are easily damaged due to the uneven force exerted on the left and right jaws of the gripper.The output force of the traditional asymmetric microgripper is stable.However,its output displacement is small,typically half the output displacement of the symmetric microgripper.To solve these problems,in this study,we designed a large-displacement asymmetric microgripper.First,we calculated the relationship between the theoretical input and output variables based on their geometric relationship.Then,we analyzed the performance of the microgripper using finite element software.Lastly,we used a piezoelectric actuator as the input driver of the microgripper.The errors associated with the theoretical and simulated output displacements were 7.05%and 9.24%,respectively.At 150 V of driving voltage,the maximum output displacement was 224μm,and the actual magnificationwas 11.2 times.Microparts can be gripped in parallel and stably,which confirms the validity of the design. 关键词：MICROGRIPPER Asymmetry Piezoelectric drive Experimental verification

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Design of large-displacement asymmetric piezoelectric microgripper based on flexible mechanisms

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