JPH02198673A - Instrument for expanding amplitude of ultrasonic vibration - Google Patents
Instrument for expanding amplitude of ultrasonic vibrationInfo
- Publication number
- JPH02198673A JPH02198673A JP2034089A JP2034089A JPH02198673A JP H02198673 A JPH02198673 A JP H02198673A JP 2034089 A JP2034089 A JP 2034089A JP 2034089 A JP2034089 A JP 2034089A JP H02198673 A JPH02198673 A JP H02198673A
- Authority
- JP
- Japan
- Prior art keywords
- horn
- ultrasonic
- vibration
- amplitude
- ultrasonic vibration
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Turning (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、超音波加工機に用いる超音波振動の振幅を
拡大する超音波振動振巾拡大具に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ultrasonic vibration amplitude expander for expanding the amplitude of ultrasonic vibration used in an ultrasonic processing machine.
第３図８は従来の超音波加工機に用いられる超音波振動
系を示す図であり１図において、１！１は市販の超音波
縦振動を発生する超音波振動子、（４）は超音波振動を
伝達し、振動振幅を拡大する９通常。Fig. 3-8 is a diagram showing an ultrasonic vibration system used in a conventional ultrasonic processing machine. In Fig. 1, 1!1 is a commercially available ultrasonic vibrator that generates ultrasonic longitudinal vibration, 9 Normal, which transmits sound wave vibrations and expands the vibration amplitude.
ホーンと呼ばれる超音波振動振幅拡大具（以下ホーンと
記載する）であり、それらは通常ネジ結合されている。These are ultrasonic vibration amplitude expanders called horns (hereinafter referred to as horns), and they are usually screwed together.
次に第３図ａの動作について説明する。超音波振動子Ｉ
ｌ＋によって発生した縦振動はホーン１４）に。Next, the operation shown in FIG. 3a will be explained. Ultrasonic transducer I
The longitudinal vibration generated by l+ is transmitted to the horn 14).
振動伝達され、ホーン（４）で振幅拡大される。この状
態で超音波振動子１１）とホーン（２１は全体で縦振動
共振系となっている。超音波振動の振幅拡大はホーン（
４）の軸方向の断面積の変化により、縦振動の慣性力が
つり合うことによって生じる。第３図すは振動拡大装置
の各位置での縦振動振幅を横軸に示した振動モード図で
ある。第３図すより明らかなように、超音波振動子Ｉｌ
ｌとホーン（４）の全長は。The vibration is transmitted and the amplitude is amplified by the horn (4). In this state, the ultrasonic transducer 11) and the horn (21) together form a longitudinal vibration resonance system.The amplitude of the ultrasonic vibration is expanded by the horn (21).
This is caused by the inertial forces of longitudinal vibration being balanced by the change in the axial cross-sectional area (4). FIG. 3 is a vibration mode diagram in which the horizontal axis shows the longitudinal vibration amplitude at each position of the vibration magnifying device. As is clear from Fig. 3, the ultrasonic transducer Il
l and the total length of the horn (4).
超音波振動子１１１．ホーン（４）の材質中の音速の１
波長分必要となる。例えば、超音波振動子１１１．ホー
ン（４）の材質を鉄鋼としてその音速が５２００ｍ／Ｓ
であるとし、共振周波数を２０にＨｚとすると。Ultrasonic transducer 111. 1 of the speed of sound in the material of the horn (4)
The wavelength is required. For example, the ultrasonic transducer 111. The horn (4) is made of steel and its sound speed is 5200 m/s.
Assume that the resonant frequency is 20 Hz.
超音波振動子Ｉｌ＋とホーン１４）の全長は２６０ｓ＋
ｍとなる。The total length of the ultrasonic transducer Il+ and horn 14) is 260s+
m.
従来の超音波振動振幅拡大装置は９以上のように超音波
振動子（１）とホーン（４）を縦一列につないだ構造で
あるため、その全長が材質内を伝播する音速の１波長分
必要となり９機器全体の小型化が困難であるという問題
があった。Conventional ultrasonic vibration amplitude amplifying devices have a structure in which an ultrasonic vibrator (1) and a horn (4) are connected in a vertical line as shown in 9 or above, so the total length is equivalent to one wavelength of the sound speed propagating in the material. Therefore, there was a problem in that it was difficult to miniaturize the nine devices as a whole.
この発明は上記のような問題点を解決するためになされ
たもので、超音波振動系の全長の短かい超音波振動振巾
拡大具を得ることを目的とする。This invention was made to solve the above-mentioned problems, and an object thereof is to obtain an ultrasonic vibration amplitude expander with a short overall length of an ultrasonic vibration system.
この発明に係る超音波振動振幅拡大具は一端部に底部が
形成された中空部を有し、軸線に直行する断面積が上記
底部が形成された一端部側よりも他端部側の方が小さく
なるように形成され、超音波振動子を上記中空部に内挿
し、その底部に固定したものである。The ultrasonic vibration amplitude expander according to the present invention has a hollow portion with a bottom formed at one end, and the cross-sectional area perpendicular to the axis is larger at the other end than at the one end where the bottom is formed. The ultrasonic vibrator is inserted into the hollow part and fixed to the bottom of the hollow part.
この発明における超音波振動振幅拡大具は、超音波振動
子を上記超音波振動振幅拡大具の中空部に内挿し、その
底部に固定する。In the ultrasonic vibration amplitude expander according to the present invention, an ultrasonic vibrator is inserted into the hollow part of the ultrasonic vibration amplitude expander and fixed to the bottom thereof.
以下、この発明の一実施例を第１図を用いて説明する。 An embodiment of the present invention will be described below with reference to FIG.
図８において、１１１は市販の超音波縦振動を発生する
超音波振動子、（２１は一端部に底部が形成された中空
部を有するホーンであり、上記超音波振動子ｉｌ＋が上
記中空部に挿入され、その底部にネジ（図示せず）で結
合されている。ホーン（２１は円筒状をなし、その軸線
に直交する断面積は超音波振動子１１１がネジ結合によ
り固定されている上記中空部の底部側端部より中央部ま
では外形および内径寸法に変化なく同一である。しかし
、ホーン（２）の中央部から開口端部へ向って、その内
径寸法は同一であるが外径寸法が漸減することにより。In FIG. 8, 111 is a commercially available ultrasonic transducer that generates ultrasonic longitudinal vibration, (21 is a horn having a hollow part with a bottom formed at one end, and the ultrasonic transducer il+ is in the hollow part. The horn (21) has a cylindrical shape, and the cross-sectional area perpendicular to the axis of the horn (21) is the same as the hollow space to which the ultrasonic transducer 111 is fixed by screw connection. From the bottom end of the horn (2) to the center, the outer diameter and inner diameter are the same without any change.However, from the center of the horn (2) to the open end, the inner diameter is the same, but the outer diameter is the same. By gradually decreasing.
軸線に直交する断面積が減少している。The cross-sectional area perpendicular to the axis is reduced.
次に第１図により、動作について説明する。超音波振動
子＋１１によって発生した縦振動はホーン（２１に振動
伝達され、ホーン（２）で振幅拡大される。超音波振動
子Ｉｌ＋とホーン（２）とは全体で縦振動共振系を形成
している。振幅拡大はホーン（２）の軸方向の断面積の
変化により、縦振動の慣性力がつり合うことによって生
じる。Next, the operation will be explained with reference to FIG. The longitudinal vibration generated by the ultrasonic transducer +11 is transmitted to the horn (21), and the amplitude is expanded by the horn (2).The ultrasonic transducer Il+ and the horn (2) collectively form a longitudinal vibration resonance system. The amplitude expansion is caused by a change in the axial cross-sectional area of the horn (2), which balances out the inertial forces of the longitudinal vibrations.
第１図すは振動系における超音波振動子ｉｌｌの。Figure 1 shows an ultrasonic transducer ill in a vibration system.
第１図Ｇはホーン（２）の縦振動振幅を横軸に示した振
動モード図を示したものであり、これ等の図により振動
系の振動の状態を説明する。超音波振動子Ｉｌ＋は縦振
動共振を生じており、第１図すに示すようにその上端と
下端は変位の絶対値が等しく。FIG. 1G shows a vibration mode diagram in which the longitudinal vibration amplitude of the horn (2) is shown on the horizontal axis, and the vibration state of the vibration system will be explained using these diagrams. The ultrasonic transducer Il+ produces longitudinal vibration resonance, and as shown in FIG. 1, the absolute value of the displacement at its upper end and lower end is equal.
位相が逆相となっている。この上端が、ホーン（２）の
上端と結合しているため、第１図Ｇに示すようにホーン
（２（の上端は超音波振動子Ｉｌ＋の上端と同位相で同
変位の振幅となる。ホーン＋２１も縦振動共振を生じて
おり、軸方向の断面積変化により振幅拡大されて、ホー
ン（２）の下端では第１図Ｇに示すように上端と逆位相
で拡大された振幅の振動が発生する。The phase is reversed. Since this upper end is coupled to the upper end of the horn (2), the upper end of the horn (2) has the same phase and the same displacement amplitude as the upper end of the ultrasonic transducer Il+, as shown in FIG. 1G. Horn +21 also causes longitudinal vibration resonance, and the amplitude is expanded due to the change in cross-sectional area in the axial direction, and at the lower end of the horn (2), as shown in Figure 1 G, the vibration with the expanded amplitude is in opposite phase to the upper end. Occur.
第１図す、ｃより明らかなように、超音波振動子１１）
とホーン＋２）は共に、材質中の音速の１／２波長であ
り、超音波振動子口ｌとホーン＋２１の総合体である超
音波振動子系としての全長は、材質中の音速の１／２波
長でよい。As is clear from Figure 1 and c, the ultrasonic transducer 11)
and horn +2) both have a wavelength of 1/2 of the sound speed in the material, and the total length of the ultrasonic transducer system, which is the combination of the ultrasonic transducer mouth l and horn +21, is 1/2 of the sound speed in the material. Two wavelengths are sufficient.
超音波振動子１１）、ホーン（２）の材質を鉄鋼（音速
５２０ ａｍ／ｓ）とし、共振周波数を２０ＫＨｚとす
ると、超音波振動子＋１１とホーン（２１でできる超音
波振動系の全長は１３０ｓｎとなり、従来の全長の１／
２となる。If the material of the ultrasonic vibrator 11) and the horn (2) are steel (velocity of sound 520 am/s) and the resonance frequency is 20 KHz, the total length of the ultrasonic vibration system made of the ultrasonic vibrator +11 and the horn (21) is 130 sn. Therefore, it is 1/1/1 of the conventional total length.
It becomes 2.
上記実施例では、ホーン（２）の外径寸法を変化させて
、ホーン（２）の軸方向の断面積変化を与えたが。In the above embodiment, the outer diameter of the horn (2) was changed to change the cross-sectional area of the horn (2) in the axial direction.
第２図に示すようにホーン（３１の内径を変化させて軸
方向の断面積変化を与えても同様な効果が得られる。As shown in FIG. 2, the same effect can be obtained by changing the inner diameter of the horn (31) to change the cross-sectional area in the axial direction.
〔発明の効果〕
以上のように、この発明によれば超音波振動子を超音波
振動振幅拡大具の中空部に内挿し、その底部に固定した
ので、超音波振動系の全長を短くすることができるもの
が得られる効果がある。[Effects of the Invention] As described above, according to the present invention, the ultrasonic vibrator is inserted into the hollow part of the ultrasonic vibration amplitude expander and fixed to the bottom thereof, so that the total length of the ultrasonic vibration system can be shortened. There is an effect that can be obtained.
第１図８はこの発明の一実施例による超音波振動系を示
す断面図、第１図す、ａは第１図ａの振動系の縦振動振
幅を示す振動モード図、第２図はこの発明の他の実施例
による超音波振動系を示す断面図、第３図８は従来の超
音波振動系を示す側面図、第３図すは第３図８の振動系
の縦振動振幅を示す振動モード図である。
図において、（１）は市販の超音波振動子、（２）は超
音波振動振幅拡大具（ホーン）である。
なお１図中、同一符号は同一、または相当部分を示す。
（ａ、）
（ｂ、）
（Ｃ６）FIG. 18 is a sectional view showing an ultrasonic vibration system according to an embodiment of the present invention, FIG. 1A is a vibration mode diagram showing the longitudinal vibration amplitude of the vibration system of FIG. 3 is a cross-sectional view showing an ultrasonic vibration system according to another embodiment of the invention; FIG. 3 is a side view showing a conventional ultrasonic vibration system; FIG. 3 is a longitudinal vibration amplitude of the vibration system of FIG. It is a vibration mode diagram. In the figure, (1) is a commercially available ultrasonic transducer, and (2) is an ultrasonic vibration amplitude expander (horn). In Figure 1, the same reference numerals indicate the same or equivalent parts. (a,) (b,) (C6)
Claims (1)
る断面積が上記底部が形成された一端部側よりも他端部
側の方が小さくなるように形成され、超音波振動子を上
記中空部に内挿し、その底部に固定したことを特徴とす
る超音波振動振幅拡大具。It has a hollow part with a bottom formed at one end, and is formed so that the cross-sectional area perpendicular to the axis is smaller at the other end than at the one end where the bottom is formed, and the ultrasonic vibrator An ultrasonic vibration amplitude enlarging tool, characterized in that it is inserted into the hollow part and fixed to the bottom of the hollow part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1020340A JP2696376B2 (en) | 1989-01-30 | 1989-01-30 | Ultrasonic vibration amplitude expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1020340A JP2696376B2 (en) | 1989-01-30 | 1989-01-30 | Ultrasonic vibration amplitude expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02198673A true JPH02198673A (en) | 1990-08-07 |
| JP2696376B2 JP2696376B2 (en) | 1998-01-14 |
Family
ID=12024407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1020340A Expired - Fee Related JP2696376B2 (en) | 1989-01-30 | 1989-01-30 | Ultrasonic vibration amplitude expander |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2696376B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811155A (en) * | 1981-07-04 | 1983-01-21 | エム・ア−・エヌ−ロ−ラント・ドルツクマシ−ネン・アクチエンゲゼルシヤフト | Rotary press |
| JPS6171860A (en) * | 1984-09-14 | 1986-04-12 | Hitachi Chem Co Ltd | Ultrasonic atomizer |
| JPS61192369A (en) * | 1985-02-20 | 1986-08-26 | Matsushita Seiko Co Ltd | Vibrator holding apparatus of ultrasonic atomizer |
-
1989
- 1989-01-30 JP JP1020340A patent/JP2696376B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811155A (en) * | 1981-07-04 | 1983-01-21 | エム・ア−・エヌ−ロ−ラント・ドルツクマシ−ネン・アクチエンゲゼルシヤフト | Rotary press |
| JPS6171860A (en) * | 1984-09-14 | 1986-04-12 | Hitachi Chem Co Ltd | Ultrasonic atomizer |
| JPS61192369A (en) * | 1985-02-20 | 1986-08-26 | Matsushita Seiko Co Ltd | Vibrator holding apparatus of ultrasonic atomizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2696376B2 (en) | 1998-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |