This paper shows the steps of structural synthesis and analysis, kinematic synthesis and analysis and CAD constructive design of a reconfigurable modular anthropomorphic gripper with three fingers. Modularity refers to the fact that the gripper variants can be obtained with only two modules, namely a platform and a finger. Reconfigurability refers to the fact that the main variants of the gripper can be obtained by changing the relative position of the fingers. It is demonstrated that the three-finger gripper has four main configurations that provide important functionality even reported to the functionality of a three-finger gripper with continuous reconfigurability. To verify correct operation, functional CAD simulation is performed, and for dynamic operation simulation, we turn to the advanced software ADAMS. An important advantage of this type of gripper, compared to those with continuous reconfigurability, is much lower price at a relatively good functionality for current robotic gripping operations. The paper makes possible subsequent turn to prototype, testing the gripper operation, as it is mounted on an industrial robot, and optimization of its operation by equipping it with contact sensors. The simulation of the gripper operation in virtual environment and data transmission to the real gripper is a solution of interest that will be studied in future research.

This paper presents an original integrated solution of montage robotization of assemblies of small and medium complexity. The robotic station (the robotized cell) proposed contains a joint industrial robot equipped with an anthropomorphic gripper with five fingers, two feeders, a montage table and a storage terminal. CAD modelling of the whole system and functional simulation are performed, which certifies the validity of its correct operation. The gripper used is anthropomorphic with five fingers and five degrees of freedom with a relatively simple structure but high functionality. The gripper, adapted by a popular variant is realized as prototype at low cost, through rapid prototyping, and tested. The gripper control is possible through the advanced method of human hand gestures capture with a Motion Leap device and their transmission through a virtual interface to the real gripper. In perspective, it is considered mounting the gripper in an improved variant, on a real robot and testing the operation of the proposed montage scenario.

Anthropomorphic grippers for robots are used increasingly in robotic applications for handling and assembly. Currently there are several versions of anthropomorphic grippers as projects, prototypes or commercial variants that due to high prices or even for very high ones, are not available for current applications. Among them, high functionality at a relatively low complexity can be noticed in the case of reconfigurable grippers with high reconfigurability, Barrett Hand type. In this context, it is justified finding alternative solutions at lower prices at a lower reconfigurability, with acceptable functionality for current robotic operations. The paper presents an original version of modular anthropomorphic gripper continuous average reconfigurability, with three fingers. There are mentioned, briefly, major structural, kinematic and static issues, a CAD model and CAD simulation for gripping several types of pieces. Furthermore, we intend to achieve a prototype and test it by mounting on an industrial robot.

This paper describes one anthropomorphic modular reconfigurable gripper for robots, including a prototype and one command solution. For the first time the stages of synthesis, analysis design and functional simulation are presented. The structural synthesis of the anthropomorphic grippers for robots can be made regarding the following main criteria: the number of fingers, the number of phalanxes, the relative dimensions of the phalanxes, the relative position of the fingers, the degree of freedom of the gripping mechanism and the characteristic constructive elements used. We have chosen a version with three identical fingers with three phalanxes on finger. The kinematic synthesis is used to obtain a correct closing of the finger and of the gripping mechanism. The static synthesis solves the problem to obtaining the necessary gripping force on each finger and the total gripping force. With the constructive dimensions a 3D model can be obtained using CATIA soft. Aspects regarding functional CAD and virtual simulations are shown too. For one variant of this type of gripper, the technical documentation is completed and the technical project has all the conditions for practical achievement and a prototype was made. There are two main constructive modules: the support, the palm and the finger. Main technical characteristics of the prototype are indicated. Some aspects regarding actuated and command schemes are shown.