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A four-degree-of-freedom piezoelectric microgripper

A technology of micro-clamps and degrees of freedom, which is applied in the direction of chucks, circuits, relays, etc., can solve the problems of micro-assembly and micro-operating system complexity, design difficulty, cost increase, etc., to reduce design difficulty and complexity , reduce the quality and volume, reduce the cost effect

Active Publication Date: 2017-03-22
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Each finger of the current micro gripper has only one degree of freedom in the clamping direction, and the whole micro gripper has only two degrees of freedom, which can only realize the movement in the gripping direction, and the movement in other directions must pass through the actuator at the front end This increases the complexity and design difficulty of the entire micro-assembly and micro-operating system, and increases the cost

Method used

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  • A four-degree-of-freedom piezoelectric microgripper
  • A four-degree-of-freedom piezoelectric microgripper
  • A four-degree-of-freedom piezoelectric microgripper

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: As shown in the figure, a four-degree-of-freedom piezoelectric micro-clamp includes an upper piezoelectric ceramic wafer 1 and a lower piezoelectric ceramic wafer 2. The bonding surface of the upper piezoelectric ceramic wafer 1 and the lower piezoelectric ceramic The bonding surfaces of the wafer 2 are bonded and fixed by insulating glue 3. The upper piezoelectric ceramic wafer 1 includes an upper support portion 11 and an upper left jaw portion 12 and a right upper jaw portion 13 integrally connected to the upper support portion 11. The upper left jaw The finger 12 and the right upper finger 13 are symmetrical along the center line of the upper support 11, and the free end of the left upper finger 12 and the free end of the right upper finger 13 are respectively integrally provided with upper extensions that can be used to install different clamping heads. Section 14, the lower piezoelectric ceramic chip 2 includes a lower support portion 21 and a left lower ...

Embodiment 2

[0021] Embodiment 2: A four-degree-of-freedom piezoelectric micro clamp, including an upper piezoelectric ceramic wafer 1 and a lower piezoelectric ceramic wafer 2, the bonding surface of the upper piezoelectric ceramic wafer 1 and the lower piezoelectric ceramic wafer 2 The surfaces are bonded and fixed by insulating glue 3. The upper piezoelectric ceramic chip 1 includes an upper support part 11, an upper left finger part 12 and an upper right finger part 13 integrally connected to the upper support part 11, an upper left finger part 12 and an upper right part The finger portion 13 is symmetrical along the center line of the upper support portion 11. The free end of the upper left finger portion 12 and the free end of the upper right finger portion 13 are respectively integrally provided with an upper expansion portion 14 that can be used to install different clamping heads, and press down The electroceramic chip 2 includes a lower support portion 21 and a lower left finger po...

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Abstract

The invention discloses a four-degree-of-freedom piezoelectric micro-clamp. The four-degree-of-freedom piezoelectric micro-clamp has the following advantages: the piezoelectric micro-clamp can enable each clamp finger to realize actions in a clamping direction and a direction perpendicular to the clamping direction, that is, each clamp finger has degrees of freedom in two directions; and the whole piezoelectric micro-clamp has four degrees of freedom, so that part front end execution mechanisms of micro-assembly and micro-operation systems can be saved, the design difficulty and complexity of the system are reduced, the mass and the volume of the system are decreased, and the system cost is reduced.

Description

Technical field [0001] The invention relates to the technical field of micro / nano positioning, and belongs to an end effector in a micro / nano positioning system such as micro-part assembly and cell micro-manipulation, and in particular to a four-degree-of-freedom piezoelectric micro clamp. Background technique [0002] Micro clamps are end effectors that can produce micron or nanometer-level motion accuracy and motion resolution. It can be used in cutting-edge technology fields such as MEMS and bioengineering. In MEMS, micro-grippers can pick up and transport micro-components such as micro-shafts and micro-gears, as well as micro-components such as micro-motors and micro-pumps. In bioengineering, micro-grippers are used to capture and release cells. Combined with the micro-impact probe, it can inject or extract a component from the cell. [0003] Each finger of the current micro-gripper has only one degree of freedom in the clamping direction, and the entire micro-gripper has only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J7/00B25J15/08B23K26/38B81B5/00B81C3/00
Inventor 崔玉国冯锋义郑军辉蔡成波
Owner NINGBO UNIV
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