Magnetostriction driving mechanism

Abstract

The invention belongs to the technical field of magnetostriction driving, and particularly relates to a magnetostriction driving mechanism which comprises a rectangular rail. An iron bar is arranged on the inner wall of the lower side of the rectangular rail, two sliding rods are jointly assembled with an installation base in a sliding mode, a magnetostriction rod is assembled in a containing groove, a coil is arranged in an inner cavity, and a sleeve is arranged in an extending groove in a sleeved mode. A circular baffle is fixedly connected with the magnetostriction rod, the lower side of the circular baffle is fixedly connected with a supporting base arranged on the two sliding rods in a sleeving mode, a stabilizing assembly is arranged between the supporting base and the installation base, the two ends of an air hole penetrate through a shell and the circular baffle respectively to be provided with air pipes, and the rectangular rail is provided with a supporting assembly matched with the two air pipes. By using the driving mechanism, a worker can conveniently dissipate heat of the magnetostriction rod. And through mutual cooperation of a first electromagnet and a second electromagnet, the shell and the supporting base are limited, and compared with a traditional moving mode through inertia, by using the mechanism of the invention, a moving distance is larger, and applicability is wider.

Description

technical field [0001] The invention belongs to the technical field of magnetostrictive driving, and in particular relates to a magnetostrictive driving mechanism. Background technique [0002] Magnetostriction means that when an object is magnetized in a magnetic field, it will elongate or shorten in the direction of magnetization. When the current passing through the coil changes or the distance from the magnet changes, its size will change significantly. Ferromagnetic materials, usually called Ferromagnetostrictive materials. Its size change is much larger than that of ferrite and other magnetostrictive materials, and the energy generated is also large, so it is called giant magnetostrictive material. Giant magnetostrictive actuator is a new type of precision displacement device. With its advantages of fast response, large magnetization deformation displacement and magnetization deformation regularity, it is widely used in precision machining, submicron positioning and o...

AI Technical Summary

Problems solved by technology

However, due to the influence of high thermal response sensitivity, giant magnetostrictive materials are prone to changes in properties such as magnetic variation coefficient due to temperature changes.

This makes the output accuracy of the giant magnetostrictive driver greatly reduced, so temperature control has become something that the driver has to consider. On the slide rail, the casing of the giant magnetostrictive driver is fixedly connected with the object that needs to be moved, and one end of the magnetostrictive rod in the casing is fixedly connected with a mass block, and then the current is slowly increased to the coil to make the magnetostrictive rod stretch slowly. Due to the friction between the giant magnetostrictive driver and the slide rail, the position of the giant magnetostrictive driver is guaranteed to remain unchanged, and then the current is quickly reduced to the coil, so that the magnetostrictive rod shrinks rapidly, and the inertia generated overcomes the giant magnetostrictive driver. The friction between the giant magnetostrictive driver and the slide rail drives the magnetostrictive driver to move, thereby driving the moving object to move. However, after long-term friction between the giant magnetostrictive driver and the slide rail, the distance between the giant magnetostrictive driver and the slide rail The friction coefficient is reduced, which will affect the later use, and the inertia will cause a slight swing when moving, so that the object that needs to be moved will slightly swing, affecting the working accuracy

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