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Three fingers are connected to the revolute joints of the palm, and each finger has a reshape mechanism with a slider moving up and down to lock or release the fingertip joint. When the slider moves upward, the gripper works in the rigid state and the fingers are actuated by the servos. When the slider moves downward, the gripper works in the flexible state that the fingertip is supported by a spring, and the fingertip joint is rotated by an embedded motor with two group cables for tuning stiffness. This novel design provides the gripper with the advantages of high precision and strong load capacity of rigid grippers and shape adaptability and safety of soft grippers. The reconfigurable mechanism allows the gripper great versatility for grasping and manipulation, which facilitates the planning and execution of the motion of objects with different shapes and stiffness. We discuss the stiffness-tunable mechanism with different states, analyze the kinematic characteristics, and test the manipulator performance to investigate the application in rigid-flexible collaborative works. Experimental results show the practicability of this gripper under different requirements and the rationality of this proposed concept.<\/jats:p>","DOI":"10.1089\/soro.2022.0148","type":"journal-article","created":{"date-parts":[[2023,4,27]],"date-time":"2023-04-27T11:40:29Z","timestamp":1682595629000},"page":"1041-1054","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":19,"title":["A Variable Stiffness Gripper with Reconfigurable Finger Joint for Versatile Manipulations"],"prefix":"10.1177","volume":"10","author":[{"given":"Huan","family":"Wang","sequence":"first","affiliation":[{"name":"School of Electrical Engineering, Southeast University, Nanjing, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6933-0743","authenticated-orcid":false,"given":"Bingtuan","family":"Gao","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Southeast University, Nanjing, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anqing","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Southeast University, Nanjing, China."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiahong","family":"He","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Southeast University, Nanjing, China."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2023,10,16]]},"reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/02783649211027233"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1126\/scirobotics.abd2666"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.23919\/SICE.2017.8105739"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/0278364918802346"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1126\/scirobotics.abd9120"},{"key":"e_1_3_4_7_2","doi-asserted-by":"publisher","DOI":"10.1089\/soro.2018.0120"},{"key":"e_1_3_4_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/TRO.2014.2325992"},{"key":"e_1_3_4_9_2","doi-asserted-by":"publisher","DOI":"10.1126\/scirobotics.abd6426"},{"key":"e_1_3_4_10_2","doi-asserted-by":"publisher","DOI":"10.1126\/scirobotics.aax0765"},{"key":"e_1_3_4_11_2","doi-asserted-by":"publisher","DOI":"10.1177\/0278364920979367"},{"key":"e_1_3_4_12_2","doi-asserted-by":"publisher","DOI":"10.1126\/scirobotics.aar7986"},{"key":"e_1_3_4_13_2","doi-asserted-by":"crossref","unstructured":"Park T Cha Y. 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