Large-step long-inchworm-type actuator
A technology of actuators and long inchworms, which is applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., and can solve the problems of low displacement output rate and small step size
Active Publication Date: 2013-09-25
XI AN JIAOTONG UNIV
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Problems solved by technology
However, the existing inchworm actuator has the problem of small step size, resulting in a low displacement output rate.
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[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0016] Such as figure 1 As shown, the present invention is a large-step inchworm actuator, the actuator is installed inside the slide rail 8, including the connecting ring 3, the first clamping mechanism 1 and the second clamping mechanism fixedly connected to the two ends of the connecting ring 3 The clamping mechanism 6 is fixedly connected to the actuating ring 4 in the middle of the connecting ring 3, the elongated piezoelectric stack 5 is installed inside the actuating ring 4, the first clamping piezoelectric stack 2 is installed inside the first clamping mechanism 1, The second clamping piezoelectric stack 7 is installed inside the second clamping mechanism 6 , and the first clamping mechanism 1 , the connecting ring 3 and the second clamping mechanism 6 form an outer frame 9 of the actuator.
[0017] As a preferred embodiment ...
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Disclosed is a large-step long-inchworm-type actuator. The actuator is installed inside a sliding rail. The actuator comprises a connecting ring, a first clamping mechanism and a second clamping mechanism which are fixedly connected to the connecting ring, and an actuating ring which is fixedly connected to the middle portion of the connecting ring. A stretching piezoelectric stack is installed inside the actuating ring, a first clamping piezoelectric stack is installed inside the first clamping mechanism, a second clamping piezoelectric stack is installed inside the second clamping mechanism, and the first clamping mechanism, the connecting ring and the second clamping mechanism form an outer framework of the actuator. The outer framework is integrally machined by the adoption of a slow wire feeding wire cutting machine tool. Bridge-type displacement amplifying mechanisms are adopted in the first clamping mechanism, the second clamping mechanism, the connecting ring and the actuating ring. The large-step long-inchworm-type actuator is large in step size, high in running speed and capable of realizing outage clamping, and meanwhile, has the advantages of being compact in structure, small in size and low in weight.
Description
technical field [0001] The invention relates to a piezoelectric actuator, in particular to a large-step inchworm actuator. Background technique [0002] The inchworm actuator is also known as the stepping actuator, which achieves a step similar to the crawling of the inchworm by coordinating the control of the clamping mechanism and the actuating ring. Due to its long stroke and high displacement output resolution, it is widely used in the fields of microelectronics technology, bioengineering, and aerospace engineering. However, the existing inchworm-type actuator has the problem of small step size, resulting in a low displacement output rate. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide a large-step inchworm actuator, which has a large step and a high travel speed, can realize power-off clamping, and has a compact structure. , Small size and light weight. [0004] T...
Claims
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IPC IPC(8): H02N2/04
Inventor 敬子建徐明龙吴成松
Owner XI AN JIAOTONG UNIV