Unlock instant, AI-driven research and patent intelligence for your innovation.

Cone surface ultrasonic motor

A technology of ultrasonic motor and cone surface, which is applied in the direction of generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc. It can solve the problems of low efficiency, high precision, cumbersome process, etc. Achieve the effect of reducing the process and self-adaptive lightening

Inactive Publication Date: 2011-11-09
ZHEJIANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high precision, cumbersome process and low efficiency of the existing traveling-wave ultrasonic motor, the present invention provides a traveling-wave ultrasonic motor with self-adaptive contact on the tapered surface

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cone surface ultrasonic motor
  • Cone surface ultrasonic motor
  • Cone surface ultrasonic motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as figure 1 and 2 , The conical ultrasonic motor includes a base 4 fixedly connected, an end cover 1 and a rotor with an integral structure.

[0017] Rotor comprises rotating disc part 7 and rotating shaft part 9, and rotating disc part 7 is positioned at the middle section of rotating shaft part 9, and the upper and lower sides of rotating disc part 7 are perpendicular to the axial direction of rotating shaft part 9 (as Figure 5 and 6 ).

[0018] The leaf spring 3 , the stator 2 and the turntable part 7 of the rotor are arranged in the inner cavity enclosed by the base 4 and the end cover 1 . The two ends of the rotating shaft part 9 of the rotor are set through the base 4 and the end cover 1 respectively, one end of which is connected with the base 4 through the deep groove bearing 5, and is mainly used for the force in the radial direction of the rotating shaft part 9; The contact bearing 6 is mated with the end cover 1 and is mainly used for bearing force ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a conical-surface ultrasonic motor. The prior ultrasonic motor adopts a stator and a rotor in plane contact and is complex in machining process. The rotor of the conical-surface ultrasonic motor has an integral structure and comprises a turntable part and a rotating shaft part, wherein a plate spring, the stator and the turntable part of the rotor are arranged in an inner cavity enclosed by a base and an end cover; the turntable part of the rotor and the plate spring are positioned on two sides of the stator respectively; the turntable part is in contact with the edge of the stator; the contact surface of the turntable part and the stator is an inclined plane; and an annular piezoelectric patch is fixedly arranged on the back of the stator. The conical-surface ultrasonic motor has the advantage of replacing a common plane rotor with the rotor in the shape of a truncated cone or a disk so as to greatly reduce the processes of machining the rotor.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to an ultrasonic motor, in particular to a traveling-wave ultrasonic motor with conical surface contact and self-adaptive adjustment on the stator-rotor contact surface. Background technique [0002] Ultrasonic Motor (USM), referred to as USM, is a new type of motor driven by ultrasonic vibration energy. It is different from traditional electromagnetic motors in that it has no armature and winding, and does not use magnetic field to transmit energy, but uses inverse piezoelectric effect. After the piezoelectric sheet is pasted on the back of the stator, and a high-frequency high-voltage electrical signal is passed through, due to the inverse piezoelectric effect of the piezoelectric sheet, the surface of the stator starts to vibrate and output traveling waves. The traveling wave motion on the surface of the stator will inevitably make the rotor in close contact with it start to rotate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00
Inventor 王文浩郭吉丰黄长江胡锡幸王剑
Owner ZHEJIANG UNIV