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Inertia type piezoelectric linear motor

A linear motor and inertial technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of reducing the output force of the driver and unable to fully utilize the piezoelectric material Drive performance, complexity and other issues, to achieve the effect of large output force, simple structure and fast response

Inactive Publication Date: 2013-04-03
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these studies are too complicated, and while achieving displacement amplification, the output force of the driver is greatly reduced, and the excellent driving performance of piezoelectric materials cannot be fully utilized.

Method used

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  • Inertia type piezoelectric linear motor
  • Inertia type piezoelectric linear motor
  • Inertia type piezoelectric linear motor

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 with 2 As shown, the mover 1, the stator shaft 2 and the displacement amplifying mechanism 4 in the inertial piezoelectric linear motor of the present invention can be made of steel, copper alloy, aluminum alloy and other related metal materials.

[0021] An annular mover 1 with a certain mass is tightly sleeved on the cylindrical stator shaft 2 with a certain pre-pressure, and the mover 1 can realize linear motion on the stator shaft 2 by using friction force and inertial force. A cylindrical end surface of the stator shaft 2 is directly bonded to the translation surface 3 of the displacement amplification mechanism 4, and ensures that the axial direction of the stator shaft 2 is perpendicular to the translation surface 3, so that the output displacement of the displacement amplification mechanism 4 is transmitted to t...

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Abstract

The invention discloses an inertia type piezoelectric linear motor which comprises a displacement amplifying mechanism, a rotor and a stator shaft. The displacement amplifying mechanism is in a diamond symmetrical structure, two diagonals of the diamond are mutually perpendicular and unequal in length, laminated piezoelectric ceramic is arranged along the long diagonal of the diamond, and a fixed face and a translation face are arranged at two corners in the short diagonal direction of the diamond and parallel to the laminated piezoelectric ceramic which is externally connected with a power source. The stator shaft is directly mounted on the translation face of the displacement amplifying mechanism, and the rotor is sleeved on the stator shaft. Compared with general coil type linear motors and other ultrasonic linear motors, the inertia type piezoelectric linear motor has the advantages of large output force, quickness in response, simple structure, easiness in processing, convenience in use, avoidance of electromagnetic interference and the like.

Description

technical field [0001] The invention relates to a piezoelectric linear motor which realizes linear motion by using inertia force and friction force, and belongs to the technical field of precision mechanical transmission. Background technique [0002] With the rapid development of mechanical devices represented by robots, precision machinery continues to develop in the direction of high precision and high response speed. Traditional linear motors are mainly driven by coils. This method has many shortcomings, such as large volume, complex mechanism, low precision, low response speed, etc., and cannot meet the needs of modern precision machinery. [0003] In recent years, piezoelectric materials have been widely studied and applied at home and abroad due to their advantages such as fast response speed, large output force, good linearity, and immunity to electromagnetic interference. Making use of the characteristics of piezoelectric materials to make ultrasonic linear motors ...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04
Inventor 金龙靳宏徐志科王瑞霞胡敏强
Owner SOUTHEAST UNIV
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