JPH05126627A - Vibration measuring device - Google Patents

Vibration measuring device

Info

Publication number
JPH05126627A
JPH05126627A JP31407691A JP31407691A JPH05126627A JP H05126627 A JPH05126627 A JP H05126627A JP 31407691 A JP31407691 A JP 31407691A JP 31407691 A JP31407691 A JP 31407691A JP H05126627 A JPH05126627 A JP H05126627A
Authority
JP
Japan
Prior art keywords
motor
detector
acceleration
vibration
frequency
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
Application number
JP31407691A
Other languages
Japanese (ja)
Other versions
JP3130985B2 (en
Inventor
Shigeru Azuma
茂 東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Corp
Original Assignee
Nidec Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nidec Corp filed Critical Nidec Corp
Priority to JP31407691A priority Critical patent/JP3130985B2/en
Publication of JPH05126627A publication Critical patent/JPH05126627A/en
Application granted granted Critical
Publication of JP3130985B2 publication Critical patent/JP3130985B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

PURPOSE:To provide a vibration measuring device capable of inspecting the noises or the like caused by the mechanical defect of the bearing of a small motor with high precision. CONSTITUTION:A pressing piece 4 is put on the nonrotation section of a motor 2 on a motor holding base 1, and the pressing piece 4 is pressed to the motor 2 side by a pressing means 5 to apply the preset pressure to the nonrotation section. A detector 6 is provided on the pressing piece 4, and the motor vibration acceleration is detected by the detector 6. Whether the detected acceleration is the preset level or below is judged by a judging means 7.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は振動測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration measuring device.

【0002】[0002]

【従来の技術】一般に、モータを製造する場合、軸受の
機械的損傷を伴なう騒音、電磁的ノイズに基づいて発生
する振動等を検査する必要がある。
2. Description of the Related Art Generally, when manufacturing a motor, it is necessary to inspect the noise associated with mechanical damage of the bearing, the vibration generated due to the electromagnetic noise, and the like.

【0003】しかして、従来の検査方法は、聴覚による
ものが主流であった。
However, most of the conventional inspection methods are based on hearing.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、近年に
おいては、モータの騒音特性が向上し、モータの小型化
が図られ、聴覚だけの検査方法では限界に来ている。こ
のため、正確な製造品質が確保できなかった。
However, in recent years, the noise characteristics of the motor have been improved, the motor has been downsized, and the inspection method using only hearing has reached its limit. Therefore, accurate manufacturing quality could not be secured.

【0005】そこで、本発明では、高い信頼性を確保す
ると共に、小型化に伴なう固有振動数が高いモータをも
高精度に検査することができる振動測定装置を提供する
ことを目的とする。
Therefore, it is an object of the present invention to provide a vibration measuring device which ensures high reliability and can inspect a motor having a high natural frequency due to downsizing with high accuracy. ..

【0006】[0006]

【課題を解決するための手段】上述の目的を達成するた
めに、本発明に係る振動測定装置は、モータ保持台と、
該モータ保持台上のモータの非回転部に圧接する押圧子
と、該押圧子をモータ側へ押圧して該非回転部に所定圧
を付加する加圧手段と、上記押圧子に連設されてモータ
振動加速度を検出する検出器と、検出された加速度が所
定レベル以下か否かを判別する判別手段と、を備えたも
のである。
In order to achieve the above object, a vibration measuring device according to the present invention comprises a motor holder and
A presser for press-contacting a non-rotating part of the motor on the motor holding table, a pressurizing means for pressing the presser to the motor side to apply a predetermined pressure to the non-rotating part, and a presser connected to the presser. A detector for detecting a motor vibration acceleration and a discriminating means for discriminating whether or not the detected acceleration is below a predetermined level are provided.

【0007】[0007]

【作用】モータ保持台にモータを保持させ、このモータ
の非回転部(例えば、シャフト固定型のモータであれ
ば、シャフト)に、加圧手段を介して、押圧子を押圧し
て、該非回転部に所定圧を付加し、この状態で、モータ
を回転駆動させれば、検出器にてモータ振動加速度を検
出することができる。
The motor is held on the motor holding table, and the non-rotating portion of the motor (for example, the shaft in the case of a shaft fixed type motor) is pressed by the pressing element through the pressurizing means, and the non-rotating portion is pressed. If a predetermined pressure is applied to the part and the motor is driven to rotate in this state, the motor vibration acceleration can be detected by the detector.

【0008】そして、判別手段により、加速度のレベル
が所定レベル以下か否かが判別され、所定レベル以下で
あれば良品とされ、所定レベル以上であれば不良品とさ
れる。
Then, the discriminating means discriminates whether or not the acceleration level is equal to or lower than a predetermined level. If the acceleration level is equal to or lower than the predetermined level, it is determined as a good product, and if it is equal to or higher than the predetermined level, it is determined as a defective product.

【0009】ところで、一般に、振動速度は単位時間当
たりの変位量であり、V(t)=A・2πfcos2π
ftで表わされ、振動加速度は単位時間当たりの速度に
おける変量であり、a(t)=−A・(2πf)2 si
n2πftで表わされる。fは振動数、Aは定数、tは
時間である。
By the way, in general, the vibration velocity is a displacement amount per unit time, and V (t) = A · 2πfcos2π
The vibration acceleration is a variable in the velocity per unit time, and a (t) = − A · (2πf) 2 si
It is represented by n2πft. f is the frequency, A is a constant, and t is time.

【0010】従って、速度の振幅は2πfAとなり、加
速度の振幅は(2πf)2 Aとなり、加速度の振幅は、
周波数の増加に伴なって大となるので、本発明の如く、
加速度にて検査を行なえば、感度が大となり、良否の判
断を確実に行なえる。
Therefore, the velocity amplitude is 2πfA, the acceleration amplitude is (2πf) 2 A, and the acceleration amplitude is
It increases as the frequency increases, so as in the present invention,
If the inspection is performed with acceleration, the sensitivity becomes large, and the quality can be surely judged.

【0011】[0011]

【実施例】以下、実施例を示す図面に基づいて本発明を
詳説する。
The present invention will be described in detail below with reference to the drawings illustrating the embodiments.

【0012】図1は本発明に係る振動測定装置の全体簡
略図を示し、この装置は、モータ保持台1と、該モータ
保持台1上のモータ2の非回転部(この場合は、シャフ
ト固定型であるので、シャフト3である。)に圧接する
押圧子4と、押圧子4をモータ2側へ押圧する加圧手段
5と、押圧子4に連設されてモータ振動加速度を検出す
る検出器6と、検出された加速度が所定レベル以下か否
かを判別する判別手段7と、を備え、検出された加速度
が所定レベル以上であれば不良品とする。
FIG. 1 shows an overall simplified view of a vibration measuring apparatus according to the present invention. This apparatus has a motor holding base 1 and a non-rotating portion of a motor 2 on the motor holding base 1 (in this case, shaft fixing). Since it is a mold, it is the shaft 3. The presser 4 is in pressure contact with the shaft 3, the pressurizing means 5 that presses the presser 4 toward the motor 2, and the detection that is connected to the presser 4 and detects the motor vibration acceleration. A detector 6 and a discriminating means 7 for discriminating whether or not the detected acceleration is equal to or lower than a predetermined level.

【0013】そして、モータ保持台1は図2に示すよう
に、基盤8に保持される。
Then, the motor holding base 1 is held on a base 8 as shown in FIG.

【0014】この基盤8は、上部材9と下部材10とから
なり、ボルトSにて一体状に連結されている。下部材10
の上面11には、円盤形状の突隆部12が設けられ、この突
隆部12には圧力検出器13が付設され、突隆部12から一端
面14に達する凹溝15が設けられ、この凹溝15を介して検
出器13のリード線16が外部へ引き出されている。
The base 8 comprises an upper member 9 and a lower member 10, which are integrally connected by a bolt S. Lower member 10
A disc-shaped protruding ridge 12 is provided on the upper surface 11 of the, a pressure detector 13 is attached to the protruding ridge 12, and a concave groove 15 reaching from the protruding ridge 12 to the one end face 14 is provided. The lead wire 16 of the detector 13 is drawn out to the outside through the groove 15.

【0015】また、上部材9には、大径部17aと小径部
17bとからなる貫孔17が設けられ、小径部17bは突隆部
12より大径とされる。
The upper member 9 has a large diameter portion 17a and a small diameter portion.
17b is provided with a through hole 17, and the small diameter portion 17b is a protruding ridge.
Larger than 12.

【0016】従って、図2に示すように、上下部材9,
10が一体状に固着された際には、貫孔17の軸心と突隆部
12の軸心とが同一軸心上に配設され、保持台1が嵌合す
る嵌合用凹所18が形成される。なお、基盤8の裏面側に
は緩衝材19が付設されている。
Therefore, as shown in FIG. 2, the upper and lower members 9,
When 10 is integrally fixed, the axial center of the through hole 17 and the protrusion
12 axes are arranged on the same axis, and a fitting recess 18 into which the holder 1 is fitted is formed. A cushioning material 19 is attached to the back side of the base 8.

【0017】しかして、モータ保持台1は、円筒体から
なる本体20と、該本体20の下面に連設される脚部21と、
からなり、ボルトSにて一体化されている。
Thus, the motor holding base 1 has a main body 20 formed of a cylindrical body, and a leg portion 21 connected to the lower surface of the main body 20.
It is made of, and is integrated with a bolt S.

【0018】図3に示すように、本体20の内周面上端に
は、内鍔部22が設けられ、この内鍔部22の内周面上端に
は周方向切欠き部23が設けられている。即ち、この切欠
き部23に、モータ2のブラケット24が係止する。
As shown in FIG. 3, an inner flange 22 is provided at the upper end of the inner peripheral surface of the main body 20, and a circumferential notch 23 is provided at the upper end of the inner peripheral surface of the inner flange 22. There is. That is, the bracket 24 of the motor 2 is locked in the notch 23.

【0019】さらに、本体20の周壁25の一部には、切欠
き部26が設けられ、この切欠き部26の底面26aには、小
円盤体27が固着されている。なお、小円盤体27の外周面
27aには、滑り止めのための凹凸部が形成されている。
Further, a cutout portion 26 is provided in a part of the peripheral wall 25 of the main body 20, and a small disc 27 is fixed to a bottom surface 26a of the cutout portion 26. The outer peripheral surface of the small disk 27
An uneven portion for preventing slippage is formed on 27a.

【0020】また、基盤8の上面8a(図2参照)に
は、上記小円盤体27より大径の円盤体28が立設されてい
る。なお、この円盤体28の外周面28aにも、滑り止めの
ための凹凸部が形成されている。
On the upper surface 8a of the base 8 (see FIG. 2), a disc body 28 having a larger diameter than the small disc body 27 is provided upright. The outer peripheral surface 28a of the disc body 28 is also provided with an uneven portion for preventing slippage.

【0021】そして、円盤体28と小円盤体27とにOリン
グ等の係止部材29が巻回されている。即ち、係止部材29
により、モータ保持台1が矢印A方向に引張られ、該モ
ータ保持台1が矢印B,C方向に回転するのを防止して
いる。つまり、モータ2を装着して、スタートさせた時
に、発生トルクの反作用で保持台1が動き、誤測定を発
生することを防止するためである。
A locking member 29 such as an O-ring is wound around the disc body 28 and the small disc body 27. That is, the locking member 29
This prevents the motor holding base 1 from being pulled in the direction of arrow A and rotating the motor holding base 1 in the directions of arrows B and C. That is, it is for preventing the erroneous measurement from occurring due to the reaction of the generated torque when the holding table 1 is moved when the motor 2 is mounted and started.

【0022】また、脚部21は、図2に示すように、大径
部21aと小径部21bとを有する円盤体からなり、下面に
は、凹所30が設けられ、脚部21を基盤8の嵌合用凹所18
に嵌合させた際には、大径部21aが基盤8の大径部17a
に嵌合し、突隆部12が凹所30に嵌合する。
As shown in FIG. 2, the leg portion 21 is composed of a disk body having a large diameter portion 21a and a small diameter portion 21b. Mating recess 18
The large diameter portion 21a, the large diameter portion 21a
And the protrusion 12 fits into the recess 30.

【0023】この場合、下部材10には、上述の検出器13
に当接乃至圧接する押圧子31が設けられ、脚部21の下面
32が下部材10の上面11に当接せず、脚部21の凹所30の上
面34が突隆部12の上面35に当接せず、モータ保持台1は
いわゆる浮いた状態となっている。
In this case, the lower member 10 includes the above-mentioned detector 13
Is provided with a pusher 31 that abuts or presses against the lower surface of the leg portion 21.
32 does not contact the upper surface 11 of the lower member 10 and the upper surface 34 of the recess 30 of the leg 21 does not contact the upper surface 35 of the protruding ridge 12, and the motor holding table 1 is in a so-called floating state. There is.

【0024】次に、押圧子4は、球体からなり、保持体
36の嵌合用凹所37に嵌合されている。また、保持体36に
は、上述の検出器6が連設されている。
Next, the pusher 4 is made of a spherical body and has a holding body.
It is fitted in the fitting recess 37 of 36. The above-mentioned detector 6 is connected to the holding body 36.

【0025】しかして、検出器6は圧電変換素子が使用
され、押圧子4を介して受けるモータ2の振動の加速度
を検出する。
Thus, the detector 6 uses a piezoelectric conversion element and detects the acceleration of the vibration of the motor 2 received through the pressing element 4.

【0026】また、加圧手段5は、基盤8上に立設され
るシャフト38と、該シャフト38に付設されるシリンダ39
と、該シリンダ39から突設される取付アーム40と、等を
備え、シリンダ39の上下動により、アーム40が上下動
し、このアーム40の先端に取付けられた検出器6が上下
動する。取付アーム40と検出器6との間には、防振ゴム
等の緩衝材Kが介装されている。この緩衝材Kにより、
検出器6と取付アーム40とを実質的に分離させ、検出器
6の固有振動数の低下を防止すると共に、外部からの不
要なノイズ、振動成分に対して遮断する。
The pressurizing means 5 includes a shaft 38 standing on the base 8 and a cylinder 39 attached to the shaft 38.
And a mounting arm 40 protruding from the cylinder 39, and the like, and the vertical movement of the cylinder 39 causes the arm 40 to move up and down, and the detector 6 attached to the tip of the arm 40 moves up and down. Between the mounting arm 40 and the detector 6, a cushioning material K such as a vibration-proof rubber is interposed. With this cushioning material K,
The detector 6 and the mounting arm 40 are substantially separated from each other to prevent the natural frequency of the detector 6 from being lowered and to block unnecessary noise and vibration components from the outside.

【0027】即ち、シャフト38には、上下の基板41,42
と該基板41,41間に配設される案内杆43…とを備えたシ
リンダ保持枠部44が設けられ、エア供給装置45(図1参
照)からのエア供給・排出により、シリンダ39が案内杆
43…に沿って上下動する。
That is, the shaft 38 has upper and lower substrates 41, 42.
A cylinder holding frame portion 44 provided with a guide rod 43 disposed between the substrates 41, 41 is provided, and the cylinder 39 is guided by the air supply / discharge from the air supply device 45 (see FIG. 1). Rod
It moves up and down along 43….

【0028】なお、エア供給装置45は、図1に示すよう
に、エアレギュレータ46を有し、スイッチ47をON状態
(操作用突出子47aがON側へ倒れた状態)とすれば、
シリンダ39が下降する。
As shown in FIG. 1, the air supply device 45 has an air regulator 46, and if the switch 47 is in the ON state (the operating protrusion 47a is tilted to the ON side),
The cylinder 39 descends.

【0029】また、検出器6には、図1に示すように、
周波数分析器48が接続されている。即ち、この周波数分
析器48は、ハイパスフィルタ49とロウパスフィルタ50と
を有し、ハイパスフィルタ49で1KHz以上のものを通
過させ、ロウパスフィルタ50で15KHz以下のものを通
過させる。
Further, as shown in FIG.
A frequency analyzer 48 is connected. That is, the frequency analyzer 48 has a high-pass filter 49 and a low-pass filter 50, and the high-pass filter 49 passes 1 kHz or higher and the low-pass filter 50 passes 15 kHz or lower.

【0030】従って、周波数分析器48は、周波数が1K
Hz〜15KHzの範囲のものが通過する。
Therefore, the frequency analyzer 48 has a frequency of 1K.
Those in the range of Hz to 15 KHz pass.

【0031】そして、周波数分析器48を通過した1KH
z〜15KHzの範囲内で、判別手段7にてある周波数に
おける加速度レベルが、基準(所定)レベルより小さい
か否かが判断される。具体的には、3KHzと7KHz
における加速度レベルが判別される。即ち、基準設定器
51にて判別すべき周波数のレベルが設定され、この基準
設定器51から判別手段7へ基準値が入力され、この基準
値と検出された加速度レベルとが比較される。
Then, 1 KH passed through the frequency analyzer 48
Within the range of z to 15 KHz, the discriminating means 7 discriminates whether or not the acceleration level at a certain frequency is lower than the reference (predetermined) level. Specifically, 3KHz and 7KHz
The acceleration level at is determined. That is, the standard setting device
The level of the frequency to be discriminated is set at 51, a reference value is input from the reference setter 51 to the discriminating means 7, and this reference value is compared with the detected acceleration level.

【0032】そして、表示手段52にて、比較(判別)さ
れた結果を、表示する。即ち、振動加速度のレベルが所
定(基準)レベルより大きければ不良品であり、不良表
示がなされ、所定レベルより小さければ良品であり、良
表示がなされるが、良の場合、表示がされず、不良の場
合のみ表示するようにするも好ましい。
Then, the display means 52 displays the result of comparison (determination). That is, if the vibration acceleration level is higher than a predetermined (reference) level, it is a defective product, and a defective display is made. If it is smaller than the predetermined level, it is a good product, and a good display is made. It is also preferable to display only when there is a defect.

【0033】従って、表示手段52としては、良と不良と
で色が相違する表示燈が点燈するもの、不良の場合のみ
表示燈が点燈するもの、「良」「不良」の文字が表示さ
れるもの、等の種々のものがある。さらには、不良の場
合には、不良である旨を知らせる音を発生させるも好ま
しい。
Therefore, as the display means 52, an indicator lamp of which the color is different between good and defective is lit, an indicator lamp is lit only in the case of defective, and characters of "good" and "bad" are displayed. There are various types such as Furthermore, in the case of a defect, it is preferable to generate a sound notifying that the defect is defective.

【0034】次に、上述の如く構成した振動装置を使用
してモータ2を検査する方法を説明する。
Next, a method of inspecting the motor 2 using the vibration device constructed as described above will be described.

【0035】まず、モータ2を、図2に示すように、モ
ータ保持台1に保持させる。この場合、モータ2のブラ
ケット24は、保持台1の周方向切欠き部23に係止させ
る。
First, the motor 2 is held by the motor holding base 1 as shown in FIG. In this case, the bracket 24 of the motor 2 is locked to the circumferential notch 23 of the holding table 1.

【0036】そして、モータ2の電源コード53は、モー
タ保持台1の切欠き部26を介して外部へ引き出され、図
1に示すように、該電源コード53の先端コネクタ54に、
回路スイッチ55からのコード56のコネクタ57が接続され
る。
Then, the power cord 53 of the motor 2 is pulled out to the outside through the notch 26 of the motor holding base 1 and, as shown in FIG.
The connector 57 of the cord 56 from the circuit switch 55 is connected.

【0037】従って、スイッチ55をON状態(操作用突
出子55aがON側へ倒れた状態)とすれば、モータ2
(具体的には、ハブ58)が回転駆動する。勿論、スイッ
チ55をOFF状態(操作用突出子55aがOFF側へ倒れ
た状態)では、回転は停止する。
Therefore, when the switch 55 is turned on (the operating protrusion 55a is tilted to the ON side), the motor 2
(Specifically, the hub 58) is driven to rotate. Of course, the rotation is stopped when the switch 55 is in the OFF state (the operation protrusion 55a is tilted to the OFF side).

【0038】しかして、スイッチ47をON状態として、
押圧子4を下降させ、押圧子4を、ハブ58から露出して
いるシャフト端面3a(非回転部)に押し当て、シャフ
ト端面3aに所定圧を付加する。これにより、モータ2
はモータ保持台1に確実に保持される。ここで、所定圧
とは、1〜3kgf位のものをいう。
With the switch 47 turned on,
The pusher 4 is lowered, and the pusher 4 is pressed against the shaft end surface 3a (non-rotating portion) exposed from the hub 58 to apply a predetermined pressure to the shaft end surface 3a. This allows the motor 2
Are securely held on the motor holding table 1. Here, the predetermined pressure means a pressure of about 1 to 3 kgf.

【0039】そして、この状態で、モータ2を回転駆動
させて、検出器6による検出を開始する。
Then, in this state, the motor 2 is rotationally driven to start the detection by the detector 6.

【0040】即ち、図4のフローチャート図に示すよう
に、周波数分析器48にて、所定周波数(1〜15KHz)
のみを通過させ、この範囲内のある周波数(3KHz及
び7KHz)における加速度のレベルをピックアップ
し、これらのレベルを、所定レベル以下か否かを判別
し、所定レベル以下であれば、良表示を行ない、所定レ
ベル以上であれば、不良表示を行なう。
That is, as shown in the flow chart of FIG. 4, the frequency analyzer 48 determines a predetermined frequency (1 to 15 KHz).
Only these frequencies are passed, and the acceleration levels at certain frequencies (3 KHz and 7 KHz) within this range are picked up, and it is determined whether or not these levels are below a predetermined level. If the levels are below a predetermined level, a good display is performed. If the level is equal to or higher than the predetermined level, the defect display is performed.

【0041】しかして、図5に示すように、横軸を振動
数(周波数)とし、縦軸を感度とすれば、モータ振動の
変位は2点鎖線で示すように、振動数が高くなるに従っ
て感度は小さくなり、モータ振動の速度は1点鎖線で示
すように、感度は一定であり、モータ振動の加速度は、
振動数が高くなるに従って、感度が大きくなる。
As shown in FIG. 5, when the horizontal axis is the frequency (frequency) and the vertical axis is the sensitivity, the displacement of the motor vibration becomes higher as the frequency becomes higher as shown by the chain double-dashed line. The sensitivity decreases, the speed of motor vibration is constant, as indicated by the one-dot chain line, and the acceleration of motor vibration is
The higher the frequency, the higher the sensitivity.

【0042】従って、この装置を使用すれば、モータ振
動加速度に基づいて判別するので、小型のモータ2(固
有振動数が高い)を高精度に検査することができる。
Therefore, when this device is used, the discrimination is made based on the motor vibration acceleration, so that the small motor 2 (having a high natural frequency) can be inspected with high accuracy.

【0043】また、この実施例によれば、モータ保持台
1に付設された押圧子31が、基盤8に設けられた検出器
13を押圧し、押圧子4によるモータ2の非回転部への圧
力を検出することができ、この圧力が一定であるかを確
認することができ、一層正確な検査を行なうことができ
る。さらに、基盤8及び検出器6には夫々緩衝材19,K
が付設されているので、この検査は安定したものとな
る。
Further, according to this embodiment, the pusher 31 attached to the motor holding base 1 is the detector provided on the substrate 8.
By pressing 13, the pressure applied to the non-rotating part of the motor 2 by the pressing element 4 can be detected, and it can be confirmed whether this pressure is constant, and a more accurate inspection can be performed. Further, the substrate 8 and the detector 6 are provided with cushioning materials 19, K, respectively.
Since this is attached, this inspection will be stable.

【0044】次に、図6は他の実施例の要部簡略図を示
し、この場合のモータ2は、シャフト回転型である。
Next, FIG. 6 shows a simplified view of the essential parts of another embodiment, in which the motor 2 is of the shaft rotating type.

【0045】即ち、モータ保持台1に、ブラケット24
(非回転部)を載置固定し、このブラケット24に押圧子
4を圧接させる。
That is, the bracket 24 is attached to the motor holding base 1.
The (non-rotating portion) is placed and fixed, and the pressing element 4 is pressed against the bracket 24.

【0046】しかして、この場合の押圧子4は、上壁60
を有する円筒体からなり、その下端面61がブラケット24
の上面62に圧接する。
However, in this case, the pressing member 4 is the upper wall 60.
And a lower end surface 61 of the bracket 24.
Press contact with the upper surface 62 of.

【0047】また、図7に示す実施例においても、モー
タ2がシャフト回転型であり、ハブ58が下向きとなるよ
うに、ブラケット24をモータ保持台1に保持させ、この
ブラケット24に、(図6に示す実施例と同様、上壁63を
有する円筒体からなる)押圧子4の下端面64を圧接させ
ている。
Also in the embodiment shown in FIG. 7, the bracket 24 is held on the motor holding base 1 so that the motor 2 is a shaft rotating type and the hub 58 faces downward. Similarly to the embodiment shown in FIG. 6, the lower end surface 64 of the presser 4 is made to contact with pressure by being made of a cylindrical body having the upper wall 63.

【0048】次に、図8に示す実施例においても、モー
タ2がシャフト回転型であり、この場合、モータ2を下
向きとすることなく、ブラケット24をモータ保持台1に
保持させ、このブラケット24に、押圧子4をブラケット
24に圧接させている。
In the embodiment shown in FIG. 8 as well, the motor 2 is of the shaft rotating type. In this case, the bracket 24 is held on the motor holding base 1 without the motor 2 being directed downward. And pusher 4 to bracket
It is pressed against 24.

【0049】従って、シャフト回転型のモータ2であっ
ても、図6〜図8に示す装置を使用すれば、図1及び図
2に示す実施例と同様、モータ振動加速度が検出され、
良否の判別を確実に行なえる。
Therefore, even with the shaft rotation type motor 2, if the device shown in FIGS. 6 to 8 is used, the motor vibration acceleration is detected as in the embodiment shown in FIGS. 1 and 2.
It is possible to reliably judge pass / fail.

【0050】なお、本発明は上述の実施例に限定され
ず、本発明の要旨を逸脱しない範囲で設計変更自由であ
り、例えば、周波数分析器48にて通過させる周波数の範
囲を変更するも、判別する周波数としても、通過した周
波数範囲内において自由に変更することができる。
The present invention is not limited to the above-mentioned embodiments, and the design can be freely changed without departing from the gist of the present invention. For example, if the range of frequencies passed by the frequency analyzer 48 is changed, The frequency to be discriminated can be freely changed within the passed frequency range.

【0051】また、加圧手段5としても、実施例のもの
に限らず、検出器6に連設された押圧子4を押圧してモ
ータ2の非回転部に所定圧を付加することができるもの
であればよいので、ネジ杆と該ネジ杆に螺合するナット
部材等を備えたものであってもよい。即ち、ナット部材
を検出器6に連設し、ネジ杆をその軸心廻りに回転させ
て、ナット部材を上下動させて、検出器6に連設された
押圧子4を上下動させるものであってもよい。
Further, the pressurizing means 5 is not limited to that of the embodiment, and the presser 4 connected to the detector 6 can be pressed to apply a predetermined pressure to the non-rotating portion of the motor 2. As long as the screw rod is used, it may be provided with a screw rod and a nut member that is screwed into the screw rod. That is, a nut member is provided in series with the detector 6, a screw rod is rotated about its axis, and the nut member is moved up and down, so that the presser 4 provided in series with the detector 6 is moved up and down. It may be.

【0052】[0052]

【発明の効果】本発明は上述の如く構成されているの
で、次に記載する効果を奏する。
Since the present invention is configured as described above, it has the following effects.

【0053】固有振動数が高い小型のモータ2につい
て、このモータ2に組込まれた軸受の機械的損傷を伴な
う騒音、及び電磁的ノイズに基づいて発生する振動、さ
らには、NRROを、高精度に検査することができる。
With respect to a small motor 2 having a high natural frequency, a vibration caused by noise accompanied by mechanical damage of a bearing incorporated in the motor 2 and electromagnetic noise, and further, NRRO is increased. It can be inspected with accuracy.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例の全体構成図である。FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

【図2】要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part.

【図3】モータ保持台の拡大斜視図である。FIG. 3 is an enlarged perspective view of a motor holder.

【図4】フローチャート図である。FIG. 4 is a flow chart diagram.

【図5】加速度・速度・変位の振動数と感度との関係を
示すグラフ図である。
FIG. 5 is a graph showing the relationship between the frequency of acceleration / velocity / displacement and sensitivity.

【図6】他の実施例の要部簡略図である。FIG. 6 is a simplified view of a main part of another embodiment.

【図7】別の実施例の要部簡略図である。FIG. 7 is a schematic view of a main part of another embodiment.

【図8】さらに別の実施例の要部簡略図である。FIG. 8 is a schematic view of a main part of still another embodiment.

【符号の説明】[Explanation of symbols]

1 モータ保持台 2 モータ 4 押圧子 5 加圧手段 6 検出器 7 判別手段 1 Motor Holding Base 2 Motor 4 Pusher 5 Pressurizing Means 6 Detector 7 Discriminating Means

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 モータ保持台1と、該モータ保持台1上
のモータ2の非回転部に圧接する押圧子4と、該押圧子
4をモータ2側へ押圧して該非回転部に所定圧を付加す
る加圧手段5と、上記押圧子4に連設されてモータ振動
加速度を検出する検出器6と、検出された加速度が所定
レベル以下か否かを判別する判別手段7と、を備えたこ
とを特徴とする振動測定装置。
1. A motor holding base 1, a pusher 4 that comes into pressure contact with a non-rotating portion of a motor 2 on the motor holding base 1, and a pusher 4 that pushes the pusher 4 toward the motor 2 to provide a predetermined pressure to the non-rotating portion. And a detector 6 connected to the presser 4 to detect the motor vibration acceleration, and a determination unit 7 for determining whether or not the detected acceleration is below a predetermined level. A vibration measuring device characterized in that
JP31407691A 1991-10-30 1991-10-30 Vibration measuring device Expired - Fee Related JP3130985B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31407691A JP3130985B2 (en) 1991-10-30 1991-10-30 Vibration measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31407691A JP3130985B2 (en) 1991-10-30 1991-10-30 Vibration measuring device

Publications (2)

Publication Number Publication Date
JPH05126627A true JPH05126627A (en) 1993-05-21
JP3130985B2 JP3130985B2 (en) 2001-01-31

Family

ID=18048942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31407691A Expired - Fee Related JP3130985B2 (en) 1991-10-30 1991-10-30 Vibration measuring device

Country Status (1)

Country Link
JP (1) JP3130985B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287703A (en) * 1998-04-03 1999-10-19 Toshiba Corp Vibration-detecting part and vibration-inspecting apparatus
JP2010041771A (en) * 2008-08-01 2010-02-18 Nsk Ltd Method and apparatus for inspecting electric motor
KR20180082208A (en) * 2017-01-10 2018-07-18 주식회사 넥스윈솔루션 Apparatus for measuring noise
CN115144751A (en) * 2022-09-05 2022-10-04 西北工业大学 Traction motor fault diagnosis device and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996006433A1 (en) 1994-08-25 1996-02-29 Sony Corporation Optical disk and optical disk drive device
CN110589457B (en) * 2019-08-20 2021-06-22 张美华 Equipment and method for detecting running noise of vane pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11287703A (en) * 1998-04-03 1999-10-19 Toshiba Corp Vibration-detecting part and vibration-inspecting apparatus
JP2010041771A (en) * 2008-08-01 2010-02-18 Nsk Ltd Method and apparatus for inspecting electric motor
KR20180082208A (en) * 2017-01-10 2018-07-18 주식회사 넥스윈솔루션 Apparatus for measuring noise
CN115144751A (en) * 2022-09-05 2022-10-04 西北工业大学 Traction motor fault diagnosis device and method
CN115144751B (en) * 2022-09-05 2022-11-08 西北工业大学 Traction motor fault diagnosis device and method

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