CN1388638A - Traveling-wave type supersonic motor - Google Patents
Traveling-wave type supersonic motor Download PDFInfo
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- CN1388638A CN1388638A CN 02138728 CN02138728A CN1388638A CN 1388638 A CN1388638 A CN 1388638A CN 02138728 CN02138728 CN 02138728 CN 02138728 A CN02138728 A CN 02138728A CN 1388638 A CN1388638 A CN 1388638A
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Abstract
The traveling-wave type supersonic motor includes stator, rotor bearing and shaft, and features the stator elastomer with L-shaped support. When the rotor is made of friction material or there are two sets of stator and rotor arranged symmetrically about the bearing, the present invention has even high technological effect. The L-shaped support structure reduces the amplitude difference between the inner side and the outer side of the stator ring and increases the contact area between the stator and the rotor and thus the motor output moment, which is further increased by the double-stator and double-rotor structure of the present invention. Outputting moment by two rotors via one identical shaft will double the moment it ideal state.
Description
Technical field
The invention belongs to technical field of motors, be specifically related to a kind of traveling-wave ultrasonic motor.
Background technology
(UltraSonic Motor USM) is a kind of New-type electric machine of directly being constructed by functional material to supersonic motor.It generally is made up of vibrating body (be equivalent to the stator in the existing motor, made by piezoelectric ceramic and metallic plate) and moving body (be equivalent to the rotor in the existing motor, made by friction material and metal etc.).When adding the supersonic frequency alternating voltage on the piezoelectric ceramic of vibrating body, piezoelectric ceramic utilizes inverse piezoelectric effect to produce ultrasonic vibration, this vibration can be transformed into the rotation or the linear pattern motion of moving body by the frictional force between vibrating body and moving body.Compare with existing electromagnetic motor, its outstanding advantage shows: low speed high torque, compact conformation, control performance is good, dynamic response is fast, no electromagnetic interference, noiselessness etc.(see " machine science and technology ", 1998 the 4th phases, 626-629), its stator structure schematic diagram as shown in Figure 2 for the structural representation of existing traveling-wave ultrasonic motor for Fig. 1.Its shortcoming is that the stator amplitude is little, and the rotor contact width is narrow, thereby makes its output torque little, has limited it in the application of torque actuated occasion greatly.In addition, motor is to come carry-over moment by sticking on one deck friction material very thin on the rotor surface.Because the wearing and tearing during operation make electrical machinery life not long.
Summary of the invention
The purpose of this invention is to provide a kind of traveling-wave ultrasonic motor, this motor has the big advantage of output torque.
Further purpose of the present invention provides that a kind of output torque is big, the traveling-wave ultrasonic motor of long service life.
For achieving the above object, a kind of traveling-wave ultrasonic motor comprises stator, rotor, bearing and axle, and it is characterized in that: the elastomeric support section of the stator on the described stator is shaped as the Γ type.
Make when described rotor adopts abrasives, or when the opposite side of described bearing was symmetrically arranged with the another set of stator of described stator, rotor coaxial, rotor, technique effect of the present invention was better.
Existing traveling-wave ultrasonic motor all adopts thin collar plate shape supporting construction as shown in Figure 2, and it makes the interior outside of track ring amplitude differ bigger, has reduced the rotor contact area, and then has caused the reduction of motor output torque.And the Γ type supporting construction that the present invention adopts has reduced outside difference of vibration in the track ring, has increased the rotor contact area.The output torque of motor is directly proportional with the rotor contact area, so for thin collar plate shape supporting construction, this supporting construction that the present invention adopts has increased the motor output torque.For further increasing the motor output torque, the present invention adopts the double-stator and double-rotor structure.Two rotors use same axle output torque, and in the ideal case, the motor output torque is 2 times of single stator.
The life-span of supersonic motor is mainly determined by friction material.Present supersonic motor all is to paste on the rotor after friction material is made thin layer.Obviously, along with the wearing and tearing of frictional layer, electrical machinery life is with very fast termination.The present invention makes one with rotor and friction material, promptly makes rotor with friction material.It not only reduces technology difficulty and has simplified electric machine structure, the more important thing is the useful life that has significantly improved motor.
Description of drawings
Fig. 1 is existing supersonic motor structural representation; (wherein 1. rotors, 2. friction material, 3. stator elastomer, 4. piezoelectric ceramic, 5. bearing, 6. spring, 7. nut, 8. fixed station)
Fig. 2 is existing thin collar plate shape stator structure schematic diagram;
Fig. 3 is the stator structure schematic diagram of band Γ type of the present invention transition;
Fig. 4 is the structural representation of traveling-wave ultrasonic motor of the present invention;
Fig. 5 is the structural representation of double-stator and double-rotor traveling-wave ultrasonic motor.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 4, Γ type transition is as shown in Figure 3 adopted at the both ends of stator elastomer 5, and its back side is pasted with piezoelectric ceramic piece 1, constitutes stator jointly.This stator is fixed on the base plate 2 by bolt 6, and rotor 4 adopts springs 3, nut 8, bearing 9 and axle 7 to be connected with stator.This motor has the big advantage of torque.
For improving the useful life of motor, can adopt friction material, make rotor as casting nylon, polytetrafluoroethylene or other organic materials.
Shown in Figure 5 is a kind of double-stator and double-rotor traveling-wave ultrasonic motor, promptly at the opposite side of bearing 9, and corresponding piezoelectric ceramic piece 1 ', stator elastomer 5 ', the rotor 4 ' of being symmetrically arranged with, and be connected on the axle 7 by spring 3 ' and nut 8 '.Motor shown in Figure 5 is compared with motor shown in Figure 4, and it uses the coaxial output torque of double-stator and double-rotor, and its torque further increases.
The traveling-wave ultrasonic motor of two stator rotor structures can adopt following method to make: metal (stainless steel or copper) is processed into Γ type shown in Figure 3 crosses wave, be stator elastomer 5,5 ', its back side (the no flank of tooth) pasted piezoelectric ceramic piece 1 and 1 ' and made stator.By bolt 6 two stators and base plate 2 are linked together.Friction material is processed into rotor, and couples together with stator by spring 3,3 ', nut 8, bearing 9.In the present embodiment, stator outer diameter 80mm, internal diameter 60mm, thick 3mm, tooth depth 2.3mm, Γ type transition L
17mm.Stalling torque is greater than 2N.m, and useful life can be above 10,000 hours.
Claims (3)
1. a traveling-wave ultrasonic motor comprises stator, rotor, bearing and axle, and it is characterized in that: the elastomeric support section of the stator on the described stator is shaped as the Γ type.
2. supersonic motor according to claim 1 is characterized in that: described rotor is made by abrasives.
3. supersonic motor according to claim 1 and 2 is characterized in that: the opposite side of described bearing is symmetrically arranged with another set of stator, the rotor with described stator, rotor coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138728 CN1208851C (en) | 2002-06-30 | 2002-06-30 | Traveling-wave type supersonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138728 CN1208851C (en) | 2002-06-30 | 2002-06-30 | Traveling-wave type supersonic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1388638A true CN1388638A (en) | 2003-01-01 |
| CN1208851C CN1208851C (en) | 2005-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138728 Expired - Fee Related CN1208851C (en) | 2002-06-30 | 2002-06-30 | Traveling-wave type supersonic motor |
Country Status (1)
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| CN (1) | CN1208851C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466450C (en) * | 2004-05-13 | 2009-03-04 | 奥林巴斯株式会社 | Ultrasonic motor |
| CN101388622B (en) * | 2008-07-07 | 2010-08-04 | 哈尔滨工业大学 | Bent-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
| CN101388624B (en) * | 2008-07-07 | 2010-08-04 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
| CN102158124A (en) * | 2010-02-08 | 2011-08-17 | 株式会社尼康 | Oscillatory wave motor, lens barrel and camera |
| CN102904369A (en) * | 2012-11-14 | 2013-01-30 | 吉林大学 | Novel method for supporting high-speed motor rotor |
| CN106371017A (en) * | 2016-11-11 | 2017-02-01 | 福建工程学院 | Ultrasonic motor transient response inertia load loading device and loading method therefor |
| CN106646221A (en) * | 2016-06-16 | 2017-05-10 | 北京卫星环境工程研究所 | Rapid determination method of ultrasonic-motor wear failure service life |
| CN110963083A (en) * | 2019-11-21 | 2020-04-07 | 南京航空航天大学 | Small-sized frame type control moment gyro driven by double-stator ultrasonic motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299663B (en) * | 2011-09-06 | 2013-11-13 | 哈尔滨工业大学 | Cylindrical traveling-wave ultrasonic motor vibrator pretightened by spring blocks |
-
2002
- 2002-06-30 CN CN 02138728 patent/CN1208851C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466450C (en) * | 2004-05-13 | 2009-03-04 | 奥林巴斯株式会社 | Ultrasonic motor |
| CN101388622B (en) * | 2008-07-07 | 2010-08-04 | 哈尔滨工业大学 | Bent-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
| CN101388624B (en) * | 2008-07-07 | 2010-08-04 | 哈尔滨工业大学 | Longitudinal-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor |
| CN102158124A (en) * | 2010-02-08 | 2011-08-17 | 株式会社尼康 | Oscillatory wave motor, lens barrel and camera |
| CN102158124B (en) * | 2010-02-08 | 2016-01-20 | 株式会社尼康 | Vibration wave motor, lens barrel and camera |
| CN102904369A (en) * | 2012-11-14 | 2013-01-30 | 吉林大学 | Novel method for supporting high-speed motor rotor |
| CN106646221A (en) * | 2016-06-16 | 2017-05-10 | 北京卫星环境工程研究所 | Rapid determination method of ultrasonic-motor wear failure service life |
| CN106646221B (en) * | 2016-06-16 | 2019-04-09 | 北京卫星环境工程研究所 | The fast determination method in ultrasound electric machine wear-out failure service life |
| CN106371017A (en) * | 2016-11-11 | 2017-02-01 | 福建工程学院 | Ultrasonic motor transient response inertia load loading device and loading method therefor |
| CN106371017B (en) * | 2016-11-11 | 2023-04-25 | 福建工程学院 | Ultrasonic motor transient response inertia load loading device and loading method thereof |
| CN110963083A (en) * | 2019-11-21 | 2020-04-07 | 南京航空航天大学 | Small-sized frame type control moment gyro driven by double-stator ultrasonic motor |
| CN110963083B (en) * | 2019-11-21 | 2021-12-21 | 南京航空航天大学 | Small-sized frame type control moment gyro driven by double-stator ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1208851C (en) | 2005-06-29 |
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