Flexible dexterous hand driven by piezoelectricity

Abstract

The invention discloses a flexible dexterous hand driven by piezoelectricity. The flexible dexterous hand driven by the piezoelectricity comprises a supporting platform body, three identical flexiblefingers, flexible connecting pieces, piezoelectric ceramic blocks and end actuators. The supporting platform body is regular polyhedron. The flexible fingers are evenly arranged on the outer side faces of the supporting platform body. The included angle between the adjacent flexible fingers is 120 degrees. The flexible fingers comprise front fingers and rear fingers, and the front fingers are connected with the rear fingers through the flexible connecting pieces. The piezoelectric ceramic blocks are bonded on the outer surfaces of the front fingers and rear fingers. The end actuators are installed at the tail ends of the front fingers. By controlling the magnitude and direction of the voltage applied to the two ends of the piezoelectric ceramic blocks, the piezoelectric ceramic blocks aredeformed accordingly, and the front fingers and rear fingers are driven to bend left or right. The end actuators are driven to grasp tiny electronic components flexibly and steadily in the micro-assembly and micro-operation of a micro-electromechanical system. Therefore, the flexible dexterous hand driven by the piezoelectricity has the advantages of simple structure, flexible movement and high grasping stability.

Description

technical field [0001] The invention relates to the technical field of micro-electro-mechanical systems, in particular to a piezoelectric-driven compliant dexterous hand applied to micro-electro-mechanical systems. Background technique [0002] Micro-Electro-Mechanical Systems (MEMS) technology is evolved from the traditional integrated circuit technology. With the development of micro-electro-mechanical systems, its products have many functions and are constantly integrated and complicated, and involve different processing techniques, different materials and complex structural shapes, such as micro-valve, micro-optical components and multi-functional micro-sensors, These devices are difficult to realize by traditional integrated circuit technology. To realize a micro-mechanical system with complex structure and various functions, micro-assembly and micro-operation technology must be used. [0003] In order to complete micro-assembly and micro-operation tasks with high qua...

AI Technical Summary

Problems solved by technology

The traditional micro gripper has two clamping arms, which are often not stable enough when clamping round devices or devices with incorrect postures, and the spatial position of the clamping arms themselves cannot be adjusted

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