Piezoelectric driving micro gripper
A piezoelectric-driven, micro-clamping technology, which is applied in chucks, micro-manipulators, manipulators, etc., can solve problems such as hardware implementation complexity, and achieve the effect of precise feedback
Active Publication Date: 2015-01-07
江苏百合光电科技有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The driving method of the above-mentioned conventional stacked piezoelectric drive device 3 is the most common and convenient way among precision piezoelectric drivers. However, this kind of implementation requires two kinds of piezoelectric materials, And it is necessary to accurately match the two-phase electrical signals (the first driving signal and the second driving signal) to generate a better motion trajectory, and its hardware implementation is more complicated
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036]Micro-grippers are used in micro-assembly and other fields, and micro-grippers have broad application prospects in precision instruments, biomedicine, aerospace and military fields. Micro grippers can be divided into piezoelectric drive, thermal drive, electrostatic drive, electromagnetic drive and other types according to the driving mode. Among them, the basic principle of piezoelectric drive technology is based on the inverse piezoelectric effect of piezoelectric ceramic materials, which can produce rotation or linear motion by controlling its mechanical deformation. It has the advantages of simple structure, low speed and high torque. In actual use, the piezoelectric drive is usually used in conjunction with the amplifying structure, which has the advantages of large driving force and small displacement. A general piezoelectric-actuated microgripper consists of a piezoelectric actuator (PZT), a flexible hinge amplifying mechanism composed of inner and outer cantileve...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a piezoelectric driving micro gripper which comprises a piezoelectric driving part and a detecting gripping part. The piezoelectric driving part comprises a driving element, an elliptic beam amplification mechanism, a lever amplification mechanism and a hinge connecting mechanism; the elliptic beam amplification mechanism comprises a first arc-shaped beam and a second arc-shaped beam which are arranged symmetrically; the driving element moves to drive the elliptic beam amplification mechanism to deform; and the elliptic beam amplification mechanism deforms to drive the lever amplification mechanism to move; the detecting gripping part comprises two gripping arms arranged opposite to each other; each gripping arm is integrated with two piezoresistive sensors; and the four piezoresistive sensors form one whole-bridge detection structure. Due to the secondary amplification of the elliptic beam amplification mechanism and the lever amplification mechanism, the piezoelectric driving micro gripper can be opened and closed to a enough degree. In addition, with the help of the whole-bridge detection structure formed by four piezoresistive sensors, the feed back of the gripping force can be implemented accurately.
Description
technical field [0001] The invention relates to a micro-operation working tool, in particular to a micro-gripper for clamping tiny objects. Background technique [0002] Micro-electromechanical system (MEMS) refers to a micro-system that can be mass-produced and integrates micro-mechanisms, micro-sensors, micro-actuators, signal processing and control circuits, as well as interfaces, communications and power supplies. MEMS can not only reduce system cost, but also can accomplish many tasks that traditional large-scale electromechanical systems cannot accomplish, such as flexible manipulation of microscopic objects. Microgripper is a key component of MEMS, a basic tool for communicating the macroscopic and microcosmic worlds, and plays an important role in the research of microelectromechanical systems and the development of micro-products. [0003] Micro-grippers are used in micro-assembly and other fields, and micro-grippers have broad application prospects in precision in...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B25J15/00B25J7/00
Inventor 陈涛陈立国汝长海孙立宁潘明强刘吉柱黄海波王蓬勃袁飞杨薇薇
Owner 江苏百合光电科技有限公司