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Terfenol-D-slice-based inertial impact linear driver

A linear drive, inertial impact technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. Achieve the effect of large driving stroke, improving motion accuracy and reliability, and responding to speed blocks

Active Publication Date: 2015-12-02
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the inertial impact linear actuator using Terfenol-D material, the magnetic coil is mostly in direct contact with the drive block, the vibration of the power supply cable affects the motion accuracy of the drive block, and the reliability of the drive is poor

Method used

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  • Terfenol-D-slice-based inertial impact linear driver
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  • Terfenol-D-slice-based inertial impact linear driver

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Embodiment Construction

[0022] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 and figure 2 The shown inertial impact linear actuator based on Terfenol-D sheet includes a coil 1, a cylinder body 2 and a drive block 3, the coil 1 is wound on the outer peripheral surface of the cylinder body 2; the drive block 3 is arranged inside the cylinder body 2, and the drive block 3 and The cylinder body 2 is slidingly fitted; the driver also includes two elastic sheets 4 and several Terfenol-D sheets 5, the two elastic sheets 4 are oppositely arranged, and one end of the elastic sheet 4 is fixed on the drive block 3, and the elastic sheet 4 The other end is fixedly connected with a counterweight 6; the Terfenol-D sheet 5 is pasted on the outer surfaces of two elastic sheets 4 at intervals, and the maximum magnetostrictive direction of the Terfenol-D shee...

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Abstract

Disclosed in the invention is a Terfenol-D-slice-based inertial impact linear driver comprising a coil, a drive block, and a cylinder body with two open ends. The coil winds around the peripheral surface of the cylinder body; and a sawtooth current is led into the coil. The drive block is arranged inside the cylinder body and the drive block and the cylinder body are in a sliding fit mode. Besides, the driver also includes two elastic plates and a plurality of Terfenol-D slices. The two elastic plates are opposite to each other; one end of each elastic plate is fixed on the drive block and the other end is fixedly connected with a balancing weight. The Terfenol-D slices are pasted to the outer sides of the two elastic plates at intervals; and the maximum magnetostriction directions of the Terfenol-D slices are consistent and are consistent with the length directions of the elastic plates. The cylinder body, the drive block, and the elastic plates are made from non-permeability-magnetic material. According to the invention, the influence on the motion precision by the power supply cable vibration can be avoided; and the reliability of the driver is improved. The bidirectional driving is realized; and the drive stroke is large.

Description

technical field [0001] The invention relates to the technical field of drivers, in particular to an inertial impact linear driver based on Terfenol-D flakes. Background technique [0002] Inertial impact linear actuator refers to a driving mechanism that uses a combination of inertial impact force and friction force to achieve precise linear displacement under the action of a sawtooth wave drive signal. The existing inertial impact linear actuators generally use piezoelectric materials as the driving elements, which have the characteristics of small size, low cost, and large motion strokes, and have been initially applied in the field of precision drives. However, the piezoelectric inertial impact linear drive is driven by voltage signals. During the movement of the driver, the moving body needs to drag the cable to provide electric energy. The self-weight and vibration of the power supply cable will have a great impact on the motion accuracy of the driver; in addition , Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02
Inventor 卢全国舒亮陶珍赵冉王欢
Owner NANCHANG INST OF TECH
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