JPS62217875A - Non-magnetic ultrasonic motor - Google Patents
Non-magnetic ultrasonic motorInfo
- Publication number
- JPS62217875A JPS62217875A JP61059497A JP5949786A JPS62217875A JP S62217875 A JPS62217875 A JP S62217875A JP 61059497 A JP61059497 A JP 61059497A JP 5949786 A JP5949786 A JP 5949786A JP S62217875 A JPS62217875 A JP S62217875A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- component parts
- motor
- ultrasonic motor
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 27
- 239000000696 magnetic material Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 12
- 239000000919 ceramic Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000906 Bronze Inorganic materials 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010974 bronze Substances 0.000 abstract description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 5
- 239000003302 ferromagnetic material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/001—Driving devices, e.g. vibrators
- H02N2/0045—Driving devices, e.g. vibrators using longitudinal or radial modes combined with torsion or shear modes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/103—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors by pressing one or more vibrators against the rotor
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は圧電体を用いた超音波モータに係わり、さらに
詳しくは非磁性体で構成され、磁気の影響を受けない又
は与えない非磁性超音波モータに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an ultrasonic motor using a piezoelectric material, and more specifically to an ultrasonic motor that is made of a non-magnetic material and is not affected by or affected by magnetism. Regarding sonic motors.
従来の電磁モータは、直流モータであれ、交流モータで
あれ、電磁相互作用を駆動力としているため、モータが
動作すると外部に電磁ノイズを発散し、近くに置かれた
テレビ、ラジオなどの電子機器に悪影響を与え、ことに
磁気作用を利用した計測器には致命的な悪影響を及ぼす
ので、これらの機器の近くでは使用できないという欠点
があった。一方磁石の近（など強磁場の中ではモータが
動作しなくなってしまうため、強磁場内で動作させる回
転トルク源としては役立たないという欠点があった。な
お、本発明者が特願昭５９−２２８００５号ほかで提案
してきた超音波楕円振動子を用いた超音波モータは、大
部分の部品が非磁性材料でてきＣいるが、ボルトとかロ
ータが磁性体であり、ことにロータに耐摩耗性の大きい
鋼材を用いると磁気を帯びやすく、摩耗粉かロータの表
面にへばりついたままステータとの圧着面に焼き付き現
象を生じ、出力トルクを減少させる原因を作る欠点があ
った。Conventional electromagnetic motors, whether they are DC motors or AC motors, use electromagnetic interaction as their driving force, so when the motor operates, it emits electromagnetic noise to the outside, which can interfere with nearby electronic devices such as televisions and radios. It has a negative effect on the magnetic field, and has a particularly fatal effect on measuring instruments that use magnetic action, so it cannot be used near these devices. On the other hand, the motor does not operate in a strong magnetic field (such as near a magnet), so it has the disadvantage that it cannot be used as a rotational torque source for operating in a strong magnetic field. In the ultrasonic motor using the ultrasonic elliptical vibrator proposed in No. 228005 and others, most of the parts are made of non-magnetic materials, but the bolts and rotor are magnetic, and the rotor is particularly wear-resistant. If a steel material with a large diameter is used, it tends to become magnetic, and abrasion powder remains stuck to the rotor surface, causing a seizure phenomenon on the crimped surface with the stator, resulting in a reduction in output torque.
この発明は、上記電磁モータが持っていた電磁相互作用
によって外部に悪影響を及ぼすとか、又は外部磁界の影
響を受けて正常に動作しなくなるという欠点を解決した
超音波モータ提供すること、およびロータなど構成部品
に磁性材料を用いたことによる摩耗粉による焼き付き現
象などを解決した非磁性超音波モータを提供することを
目的とする。The present invention provides an ultrasonic motor that solves the drawbacks of the electromagnetic motor, such as having an adverse effect on the outside due to electromagnetic interaction or malfunctioning due to the influence of an external magnetic field, and providing an ultrasonic motor with a rotor, etc. It is an object of the present invention to provide a non-magnetic ultrasonic motor that solves problems such as seizure caused by abrasion particles caused by using magnetic materials for component parts.
上記目的は、超音波モータを構成するすべての部品を非
磁体で構成することによって達成される。The above object is achieved by constructing all the parts constituting the ultrasonic motor from non-magnetic materials.
超音波振動を回転トルク源とした超音波モータでは、超
音波振動子などの超音波振動発生源と、この振動を受は
摩擦力によって回転トルクに変換する回転子すなわちロ
ータとから構成されている。An ultrasonic motor that uses ultrasonic vibration as a rotational torque source consists of an ultrasonic vibration generation source such as an ultrasonic vibrator, and a rotor that receives this vibration and converts it into rotational torque using frictional force. .
超音波振動子は超音波損失の少いアルミニウムまたは鋼
鉄を共振体、ねじり結合子などの構成材料としているか
ら、鋼鉄の使用をさけてアルミニウムを用いれば主材料
は非磁性体になる。問題はこれらの部品とセラミック圧
電振動子を一体化して超音波振動子にまとめあげる役割
をしている締付ボルトであるが、これも非磁性化を考慮
してステンレス鋼５Ｓ−３１６材等を用いれば解決され
る。ロータは耐摩耗性か重視されることから、従来は焼
き入れ鋼など強磁性材料を用いていたことが問題となっ
たので、これもステンレスＭ ＳＳ −３１６材等を用
いて非磁性化する。さらに細か（は、ベアリング、スプ
リングに至るまですべての構成部品に非磁性材料からな
る部品を用いた点が本発明の特徴である。Since the ultrasonic vibrator uses aluminum or steel, which has low ultrasonic loss, as the constituent material for the resonator, torsion coupler, etc., if aluminum is used instead of steel, the main material will be non-magnetic. The problem is the tightening bolt that integrates these parts and the ceramic piezoelectric vibrator into an ultrasonic vibrator, but this too is made of stainless steel 5S-316 material with consideration to non-magnetic properties. It will be resolved if Since the wear resistance of the rotor is important, conventionally ferromagnetic materials such as hardened steel have been used, which has caused problems, so this material is also made non-magnetic by using stainless steel M SS-316 material or the like. A further feature of the present invention is that all components, including the bearings and springs, are made of non-magnetic materials.
非磁性材料としては金属に限らず、特に金属製であるこ
とを必要としないスプリング、モータケーシングなどの
部品には、プラスチック、セラミック等の非金属材料を
用いてもよい。The non-magnetic material is not limited to metal, and non-metal materials such as plastic and ceramic may be used for parts such as springs and motor casings that do not particularly need to be made of metal.
磁化される部品が全くないので、外部磁界により動作に
影響を受けず、また外部に電磁ノイズを発散したり周囲
の磁界を乱すこともない非磁性超音波モータを実現でき
、ロータを非磁性体としたことで摩耗粉の焼き付き現象
も排除できる。Since there are no magnetized parts, it is possible to create a non-magnetic ultrasonic motor whose operation is not affected by external magnetic fields, and which does not emit electromagnetic noise to the outside or disturb the surrounding magnetic field. By doing so, it is possible to eliminate the phenomenon of seizure of wear particles.
本発明になる非磁性超音波モータの一実施例を第１図、
第２図に示す、この実施例は本発明者が特願昭５９−２
２８００５号ほかで既に提案して来た片持梁状ねじり結
合子を用いた超音波楕円振動子をステータとする超音波
モータと外観、構造共に同じである。差異は構造ではな
く材質であり、すべての部品を非磁性材料からなるもの
とした。すなわち、第１図に示すように、二枚のドーナ
ツ状のＰｂ （Ｚｒ Ｔｉ ） ０３系セラミツク圧成
振動子ｌおよび２の正電極面間にリード線３′のついた
燐青銅からなる端子板３を挾み、リード線４′のついた
別の端子板４と重ね、これら部品に共振体であるアルミ
ニウム円板座金６にセットしたステンレス鋼５Ｓ−３１
６からなるキャップボルト７を通し、さらに共振体であ
るアルミニウム円板５に通したボルト７の先端をアルミ
ニウム製のねじり結合子８の円板部底面中央のねじ孔に
ねじ込み、締め付けて一体化しステータを構成した。こ
のステータの端面、すなわち第１図のねじり結合子８の
上面中央のねじ孔に、５Ｓ−３１６からなるロータ９の
中空シャフト９′内にセットし７たベリリウム製ボール
ベアリング１２と５Ｓ−３１６からなるコイルスプリン
グ１１に通した同じ（５Ｓ−３１６からなるキャップボ
ルト１０の先端をねじ込み、締めつけることによってロ
ータ９をステータに圧着し、超音波モータを構成した。An embodiment of the non-magnetic ultrasonic motor according to the present invention is shown in FIG.
This embodiment, shown in FIG.
It has the same appearance and structure as the ultrasonic motor which uses an ultrasonic elliptical vibrator as a stator, which uses a cantilever-like torsion coupler, which has already been proposed in No. 28005 and others. The difference is not in structure but in materials, with all parts made of non-magnetic materials. That is, as shown in FIG. 1, a terminal plate made of phosphor bronze with a lead wire 3' attached between the positive electrode surfaces of two donut-shaped Pb (Zr Ti ) 03 series ceramic pressed vibrators 1 and 2. 3, stacked with another terminal plate 4 with a lead wire 4' attached, and attached to these parts a stainless steel 5S-31 wire set in an aluminum disk washer 6 which is a resonator.
6 through the cap bolt 7, and then the tip of the bolt 7 passed through the aluminum disc 5, which is the resonator, into the threaded hole in the center of the bottom of the disc part of the aluminum torsion connector 8, and tightened to integrate the stator. was configured. A beryllium ball bearing 12 and a 5S-316 ball bearing 12 are set in the hollow shaft 9' of the rotor 9 made of 5S-316 in the screw hole at the center of the end surface of the stator, that is, the upper surface of the torsion connector 8 in FIG. The rotor 9 was crimped to the stator by screwing in and tightening the tip of the cap bolt 10 made of the same material (5S-316) passed through a coil spring 11 made of the same material (5S-316), thereby constructing an ultrasonic motor.
第２図は、この超音波モータをアルミニウム製モータケ
ース１３に収納した完成品を示す。FIG. 2 shows a completed product in which this ultrasonic motor is housed in an aluminum motor case 13.
このようにして、でき上った超音波モータを強力な磁石
に近づけてみたが全く、くっつかなかった。つぎにリー
ド線３′と４′とに４３．６ ｋ Ｈｚ、 １００ Ｖ
の正弦波電圧を印加し、ロータが約９Ｑｒｐｍで回転し
た状態でロータを手で強く押えてみたが止まらなかった
。この強力な回転状態で、受信中のラジオに近ずけてみ
たが、ラジオは何の影響も示さなかった。このことは超
音波モータは回転中でも電磁ノイズを発散しないことを
証明しており、電子機器と近接させた状態で用いること
ができる。従って、超音波モータを制御する電子回路を
モータのケース内にセットして異常なく動作させること
もできた。第３に、最初に接近させた磁石に、回転中の
モータを接近させてみたが、モータの動特性は全く影響
を受けず、強磁場中でも正常に回転することがわかった
。これらのことから、本実施例の非磁性超音波モータは
超電導マグネットを用いたリニアモータカーの制御用モ
ータとして利用できることなどが明らかになった。I tried bringing the ultrasonic motor I had created in this way close to a powerful magnet, but it did not stick at all. Next, apply 43.6 kHz, 100 V to lead wires 3' and 4'.
I applied a sine wave voltage of , and while the rotor was rotating at about 9 Qrpm, I tried pressing the rotor strongly with my hand, but it did not stop. In this powerful rotation state, I approached the radio while it was receiving, and the radio showed no effect. This proves that the ultrasonic motor does not emit electromagnetic noise even while rotating, and can be used in close proximity to electronic equipment. Therefore, it was possible to set the electronic circuit that controls the ultrasonic motor inside the motor case and operate it without any abnormality. Third, when we brought a rotating motor close to the first magnet, we found that the motor's dynamic characteristics were not affected at all and that it rotated normally even in a strong magnetic field. From these results, it has become clear that the non-magnetic ultrasonic motor of this example can be used as a control motor for a linear motor car using a superconducting magnet.
本実施例の非磁性超音波モータは上記したように用途面
でも画期的な特徴がみられたが、寿命の面でも予想外の
成果が爵られた。すなわち、従来のこの種モータではロ
ータに焼き入れ鋼など耐摩耗性の大きい材料を用いてき
たが、これらの材料は強磁性を示すものが多く、長時間
運転していると摩耗粉が生じ、その摩耗粉が磁気を帯び
たロータの圧着面に焼き付き、雪の積ったレールと同じ
効果で、出力トルクを減少させることがしばしばであっ
たが、本実施例のモータではｉ、ｏｏｏ時間の連続運転
「１月ここのような現象は一度もみられなかった。As mentioned above, the non-magnetic ultrasonic motor of this example had innovative features in terms of usage, but also achieved unexpected results in terms of life. In other words, conventional motors of this type have used highly wear-resistant materials such as hardened steel for the rotor, but many of these materials exhibit ferromagnetism, and wear particles are generated during long-term operation. The abrasion particles often seize on the magnetic rotor's crimped surface, which has the same effect as snow-covered rails, reducing the output torque. However, in the motor of this example, the i, ooo time Continuous operation: ``We have never seen a phenomenon like this in January.
以上説明したように、本発明では圧電振動子のたて振動
によって励振され、楕円振動を発生するねじり結合子の
端面に圧着されたロータが受ける回転トルクを駆動源と
する超音波モータにおいて、モータを構成するすべての
部品を非磁性材料で構成したことにより、モータを運転
しても周囲に電磁ノイズを発散したり、周囲の磁場を乱
したりすることが無くなったことは勿論、磁石などの強
い磁場１１月こおいても一切磁場の影響を受けることな
く正常に動作するモータを実現できたことの実用上の効
果は大きい。とはいえ、本発明に限らず、従来の超音波
モータは電磁モータと異なり、強磁性体をほとんど使用
していないので、超音波モータに限り本発明に近い効果
が期待できたはずであるが、実際上の効果が顕著でなか
ったのは、ロータ、シャフト、ボルトなど機械部品のど
こかに強磁性体を用いていたからである。これに対して
、本発明によって顕著な効果が得られたのは強磁性材料
の使用を厳禁したことによる。ことにロータを非磁性体
に替えたことは摩耗粉の焼き付き現象の排除を達成する
ことができ、出力特性の安定化を達成できた効果は実用
上きわめて重要である。As explained above, in the present invention, the ultrasonic motor is driven by the rotational torque received by the rotor, which is excited by the vertical vibration of a piezoelectric vibrator and is crimped to the end face of a torsion coupler that generates elliptical vibration. Since all the parts that make up the motor are made of non-magnetic materials, the motor does not emit electromagnetic noise or disturb the surrounding magnetic field when it is operated, and it also eliminates the possibility of magnets, etc. The practical effect of being able to realize a motor that operates normally without being affected by the magnetic field at all even in the presence of a strong magnetic field is significant. However, unlike electromagnetic motors, conventional ultrasonic motors, which are not limited to the present invention, hardly use ferromagnetic material, so it would have been possible to expect effects similar to the present invention only in ultrasonic motors. The reason that the practical effect was not significant is because ferromagnetic material was used somewhere in the mechanical parts such as the rotor, shaft, and bolts. In contrast, the remarkable effects achieved by the present invention are due to the fact that the use of ferromagnetic materials is strictly prohibited. In particular, by replacing the rotor with a non-magnetic material, it is possible to eliminate the seizure phenomenon of wear particles, and the effect of stabilizing the output characteristics is extremely important in practical terms.
第１図は本発明による非磁性超音波モータの一実施例を
示す要部断面図、第２図はそのモータケースの一部を欠
除した外観斜視図である。
１．２・・・セラミック圧電振動子
３．４・・・燐青銅端子板
５．６・・・アルミニウム円板
７・・・５Ｓ−３１６キヤツプボルト
８・・・アルミニウムねじり結合子
９・・・５Ｓ−３１６０−タ
１０・・・５Ｓ−３１６キヤツプボルト１１・・・５Ｓ
−３１６コイルスフリング１２・・・ベリリウムボール
ベアリング１３・・・アルミニウムモータケース
代理人弁理士 中 村 純 之 助
−愁 １ 図FIG. 1 is a sectional view of essential parts of an embodiment of a non-magnetic ultrasonic motor according to the present invention, and FIG. 2 is an external perspective view with a part of the motor case removed. 1.2... Ceramic piezoelectric vibrator 3.4... Phosphor bronze terminal plate 5.6... Aluminum disc 7... 5S-316 cap bolt 8... Aluminum torsion connector 9... 5S-3160-ta 10...5S-316 cap bolt 11...5S
-316 Coil spring 12...Beryllium ball bearing 13...Aluminum motor case Patent attorney Junyuki Nakamura 1 Diagram
Claims (1)
発生するねじり結合子の端面に圧着されたロータが受け
る回転トルクを、駆動源とする超音波モータにおいて、
モータを構成するすべての部品を非磁性材料で構成した
ことを特徴とする非磁性超音波モータ。1. In an ultrasonic motor whose drive source is rotational torque received by a rotor crimped to the end face of a torsion coupler that is excited by the vertical vibration of a piezoelectric vibrator and generates elliptical vibration,
A non-magnetic ultrasonic motor characterized in that all parts constituting the motor are made of non-magnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61059497A JPS62217875A (en) | 1986-03-19 | 1986-03-19 | Non-magnetic ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61059497A JPS62217875A (en) | 1986-03-19 | 1986-03-19 | Non-magnetic ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62217875A true JPS62217875A (en) | 1987-09-25 |
Family
ID=13114979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61059497A Pending JPS62217875A (en) | 1986-03-19 | 1986-03-19 | Non-magnetic ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62217875A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4885499A (en) * | 1988-02-12 | 1989-12-05 | Ngk Spark Plug Co., Inc. | Ultrasonic driven type motor |
| US4933590A (en) * | 1988-03-11 | 1990-06-12 | Nec Corporation | Ultrasonic motor |
| US4975614A (en) * | 1987-03-18 | 1990-12-04 | Honda Electric Co., Ltd. | Ultrasonic driving device |
| JPH0624394U (en) * | 1992-04-15 | 1994-03-29 | アルプス電気株式会社 | Ultrasonic motor |
| US7421792B2 (en) * | 2003-11-13 | 2008-09-09 | Samsung Electronics Co., Ltd. | Apparatus and method of calibrating azimuth of mobile device |
| US10014746B2 (en) * | 2013-04-02 | 2018-07-03 | Asmo Co., Ltd. | Rotary electric machine and method of manufacturing rotary electric machine |
-
1986
- 1986-03-19 JP JP61059497A patent/JPS62217875A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975614A (en) * | 1987-03-18 | 1990-12-04 | Honda Electric Co., Ltd. | Ultrasonic driving device |
| US4885499A (en) * | 1988-02-12 | 1989-12-05 | Ngk Spark Plug Co., Inc. | Ultrasonic driven type motor |
| US4933590A (en) * | 1988-03-11 | 1990-06-12 | Nec Corporation | Ultrasonic motor |
| JPH0624394U (en) * | 1992-04-15 | 1994-03-29 | アルプス電気株式会社 | Ultrasonic motor |
| US7421792B2 (en) * | 2003-11-13 | 2008-09-09 | Samsung Electronics Co., Ltd. | Apparatus and method of calibrating azimuth of mobile device |
| US10014746B2 (en) * | 2013-04-02 | 2018-07-03 | Asmo Co., Ltd. | Rotary electric machine and method of manufacturing rotary electric machine |
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