A fiber ejection device based on laminated piezoelectric ceramics and its working method

Abstract

The invention discloses a fiber push-out device based on laminated piezoelectric ceramics and a working method thereof. The device comprises a piezoelectric micro-displacement output unit, a manual adjustment micro-motion platform, an L-shaped connecting block I, an L-shaped connecting block II and a base, wherein the L-shaped connecting block II, the L-shaped connecting block I and the manual adjustment micro-motion platform are arranged on the base in sequence, and a fiber slide is placed on the working surface of the L-shaped connecting block II; the piezoelectric micro-displacement unit isfixed with an adjustment threaded surface of the manual adjustment micro-motion platform through screws, and the piezoelectric micro-displacement unit adopts the laminated piezoelectric ceramics to serve as an actuating element and is aligned to the working surface of the L-shaped connecting block II through an ejector pin so as to push out a fiber. The fiber push-out device adopts the piezoelectric micro-displacement output mechanism, provides motion with appropriate thrust, large stroke and micro-order precision in the output direction, outputs high-precision displacement actuation, and feeds back and collects the interface bonding force in time, thereby achieving efficient push-out of the single fiber and accurate measurement for the interface bonding force in the push-out process of the fiber.

Description

technical field [0001] The invention relates to a fiber push-out device based on laminated piezoelectric ceramics and a working method thereof, belonging to the technical field of piezoelectric precision actuation. Background technique [0002] The fiber ejection test is mainly used to measure the interfacial bonding force between fiber composite materials and to study the mechanism of the interface reaction. The fiber ejecting device usually needs to have a large thrust (above 100 N) and high precision (micron level). In order to measure the bonding force, It is often also necessary to have a sensor feedback system. The piezoelectric micro-displacement actuator is an intelligent structure that has developed rapidly in recent years. It uses the inverse piezoelectric effect of piezoelectric materials to drive the elastic body to produce micro-displacement. It has the advantages of simple structure, large thrust, high precision, fast response, Self-locking, no electromagnetic...

AI Technical Summary

Problems solved by technology

[0004] Existing fiber ejection devices mainly use servo motors for ejection, and the ejection force and stroke are relatively large. The main weakness is that the displacement resolution of the step cannot be guaranteed, the ejection process is easily affected by inertia, and the contact feedback between the interfaces is not timely.

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