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Composite supersonic motor with great moment and longitudinal torque

An ultrasonic motor and composite technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve problems such as difficulty in low speed and large torque, and achieve high positioning accuracy, The effect of weight reduction and rapid energy decay

Inactive Publication Date: 2002-12-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional electromagnetic induction motor is difficult to achieve low speed and high torque due to the winding structure.

Method used

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  • Composite supersonic motor with great moment and longitudinal torque
  • Composite supersonic motor with great moment and longitudinal torque
  • Composite supersonic motor with great moment and longitudinal torque

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Experimental program
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Embodiment Construction

[0020] Such as figure 1 As shown, it includes a stator composed of a lower metal ring 1, a piezoelectric ceramic torsional vibrator 2, an intermediate metal body 3, a piezoelectric ceramic longitudinal vibrator 4, and an upper metal ring 5, a rotor 7, and a mandrel 14; On the shoulder, from bottom to top, there are inherent piezoelectric ceramic longitudinal oscillators 4, upper metal ring 5, and under the shoulder of the intermediate metal body 3, from top to bottom, inherent piezoelectric ceramic torsional oscillators 2, lower metal ring 1, and the intermediate metal body 3 is fixed on the mandrel 14, the bottom surface of the mandrel 14 and the lower metal ring 1 are fixed on the bottom plate 19, the outer surface of the bottom of the rotor 7 is bonded with the friction material 6, and the radial bearing 13 is installed on the mandrel 14 above the stator, through Axial thrust bearing 8, belleville spring 9 use compression nut 12 to compress stator and rotor, the upper end o...

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PUM

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Abstract

The composite supersonic motor includes stator comprising lower metal ring, twisting piezoelectric ceramic vibrator, middle metal body, longitudinal piezoelectric ceramic vibrator and upper metal ring; rotor and spindle, via which the stator and the rotor are connected and pressed. By applying AC signals of the same frequency, the same as resonant frequency of the stator, and different phase to the twisting vibrator and longitudinal vibrator, the stator is made to produce longitudinal and twisting vibration acted intermittently to the rotor with friction material adhered to the outer surface of the bottom. High frequency and rotation inertia of the rotor makes the rotor move in homogeneous and low speed and great moment.

Description

technical field [0001] The invention relates to a motor utilizing the piezoelectric effect, in particular to a longitudinal-twisting composite ultrasonic motor. Background technique [0002] At present, the traditional electromagnetic induction motor is difficult to achieve low speed and high torque due to the winding structure. For all kinds of ultrasonic motors, it is also difficult to achieve a speed of 0 to dozens of revolutions per minute and a large torque of 1 to 10 Nm or more. Contents of the invention [0003] The invention provides a large-torque longitudinal-torsion compound ultrasonic motor with a stator adopting a longitudinal-torsion compound vibrator, which can realize the purpose of low rotational speed and high torque. [0004] The following three technical solutions adopted in the present invention: [0005] 1) Large torque longitudinal torsion composite ultrasonic motor includes stator, rotor, mandrel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12
Inventor 郭吉丰魏燕定郭海训陈永校
Owner ZHEJIANG UNIV
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