Composite metal ceramic tubular piezoelectric motor

A metal-ceramic composite and piezoelectric motor technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve problems such as complex structures and limited motor thrust

Active Publication Date: 2012-09-19
JIANCHENG TECH GUANGZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this design can be made into a motor with a smaller size and a stable connection between the stator and the rotor, the structure is complex and the thrust of the motor is limited.

Method used

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  • Composite metal ceramic tubular piezoelectric motor
  • Composite metal ceramic tubular piezoelectric motor
  • Composite metal ceramic tubular piezoelectric motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 and 2 , The stator is provided with a metal tube 101, piezoelectric ceramics 102 (4 pieces), driving feet 103 and electrodes (two pairs). The cross section of the metal tube 101 is square, and the four edges 1011 of the metal tube 101 are facet transition edges, which can reduce the rigidity of the metal tube 101 . The center hole of the metal tube 101 is labeled 1010 . The four sides of the metal tube 101 are respectively symmetrically pasted with a piece of piezoelectric ceramic 102 using high-strength epoxy resin. The driving foot 103 is disposed on an edge 1011 of the metal pipe 101 , and the driving foot 103 is generally made of wear-resistant materials, such as alumina ceramics, hard alloy, and the like. The upper and lower surfaces of the piezoelectric ceramic 102 are full electrodes, which are polarized along the thickness direction, such as figure 2 indicated by the arrow. The polarization directions of two adjacent pairs of piezoelectric cera...

Embodiment 2

[0027] see image 3 , similar to that of Embodiment 1, the difference is that the driving foot 103 is located in the middle of the surface of one piezoelectric ceramic 102 out of the four piezoelectric ceramics 102 . Works the same. image 3 The rest of the labels in are correspondingly consistent with Example 1.

Embodiment 3

[0029] see Figure 4 and 5 , similar to Embodiment 2, the difference is that the stator is also provided with a clamping piece 100 and an elastic piece 104 , the holding piece 100 is bonded to the piezoelectric ceramic 102 , and the elastic piece 104 is bonded to the clamping piece 100 . Bonding with epoxy resin. Bonding enables the stator, the clamping member 100 and the elastic member 104 to form a one-piece structure. The function of the elastic member 104 is to exert a pre-tightening force on the driving foot 103 through the clamping member 100 and at the same time play the role of fixing the stator. The elastic member 104 is a leaf spring. The clamping piece 100 is clamped at the node position of the stator, and other parts of the stator are not in contact with the spring sheet 104, so that the vibration of the stator will not be affected. The position of the node depends on the adopted vibration mode. For example, if the first-order bending vibration mode is adopted,...

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PUM

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Abstract

The invention discloses a composite metal ceramic tubular piezoelectric motor, which relates to a minisize piezoelectric ceramic motor and provides a linear piezoelectric motor with low voltage drive and large thrust. The composite metal ceramic tubular piezoelectric motor comprises a stator and electrodes arranged on the surfaces of piezoelectric ceramic plates and is characterized in that the stator is provided with a metal tube, a piezoelectric ceramic component and a drive foot; wherein the metal tube is a quadrangle column tube, the piezoelectric ceramic component is provide with four piezoelectric ceramic plates which are provided with an electrode respectively, the polarization direction of the piezoelectric ceramic plates are along the thickness direction, and the four piezoelectric ceramic plates are respectively fixed at one of four sides of the metal tube; and the drive foot is fixed on one of the four piezoelectric ceramic plates or on one of four edges of the metal tube.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric material application, and relates to a miniature piezoelectric ceramic motor. Background technique [0002] As a brand-new driver, the piezoelectric motor has attracted widespread attention at home and abroad for its advantages of low speed, high torque, large static holding torque, fast response, small size, light weight, nanometer resolution, and no magnetic field interference. It has been applied in many fields. In general, piezoelectric motors can be classified into linear piezoelectric motors and rotary piezoelectric motors. The mover in the linear piezoelectric motor makes linear motion; the mover in the rotary piezoelectric motor makes rotary motion. Generally speaking, in the case of the same thrust, people hope to further improve the efficiency of the motor, reduce the driving voltage of the piezoelectric motor and reduce the size of the piezoelectric motor, so that the piezoelect...

Claims

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Application Information

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IPC IPC(8): H02N2/06
Inventor 江海
Owner JIANCHENG TECH GUANGZHOU CO LTD
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