JP2003149084A - Apparatus and method for inspecting bearing device - Google Patents

Apparatus and method for inspecting bearing device

Info

Publication number
JP2003149084A
JP2003149084A JP2001348126A JP2001348126A JP2003149084A JP 2003149084 A JP2003149084 A JP 2003149084A JP 2001348126 A JP2001348126 A JP 2001348126A JP 2001348126 A JP2001348126 A JP 2001348126A JP 2003149084 A JP2003149084 A JP 2003149084A
Authority
JP
Japan
Prior art keywords
jig
bearing
bearing device
rotor
shaft
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
Application number
JP2001348126A
Other languages
Japanese (ja)
Inventor
Katsuo Ishikawa
勝男 石川
Kenichi Mizuno
賢一 水野
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2001348126A priority Critical patent/JP2003149084A/en
Publication of JP2003149084A publication Critical patent/JP2003149084A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an inspecting apparatus and an inspecting method capable of inspecting a bearing device state for vibration sound similar to a state incorporated to a product. SOLUTION: In a bearing unit 11, two bearing outer rings 13 and 14 are connected and maintained at a predetermined interval by a pressure spring 15, and a shaft 12 is supported by balls 13a and 14a arranged in the inner circumference of the bearing outer rings 13 and 14. The inspecting apparatus for measuring and inspecting the vibration sound of the bearing unit 11 to be inspected when it is driven to rotate is constituted of a cylindrical sleeve jig 20 with a slit capable of holding the bearing outer rings 13 and 14 at its inner circumference, a rotor jig 30 capable of mounting the sleeve jig 20 inside, and a fixed base 26. In the fixing base 26, both a shaft 27 for fixing one end of the shaft 12 of the bearing unit 11 protruded from the sleeve jig 20 mounted inside the rotor jig 30 and a stator 20 for rotating the rotor jig 30 are concentrically arranged. Since a structure similar to the product is implemented by the sleeve jig 20 and the rotor jig 30, it is possible to perform inspections at the same number of revolutions by the same vibration measuring means as in inspections on a production state.

Description

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

【0001】[0001]

【発明の属する技術分野】本発明は、磁気記録再生装置
の高速回転用モータなどに用いられる軸受装置の検査装
置および検査方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection device and an inspection method for a bearing device used in a motor for high speed rotation of a magnetic recording / reproducing device.

【0002】[0002]

【従来の技術】モータを製造する時には、軸受の機械的
損傷を、それに起因する騒音、電磁的ノイズに基づいて
発生する振動等を介して検査する必要がある。そのため
の検査装置として、たとえば特開平05−126627
号公報に、磁気記録再生装置の高速回転用モータ(スピ
ンドルモータ)など、小型で固有振動数が高いモータを
検査する検査装置が開示されている。この検査装置は、
軸受ユニットが組み込まれたモータについて、つまり製
品状態にて、軸受ユニットの機械的損傷に伴われる騒音
(振動)を検査するものである。
2. Description of the Related Art When manufacturing a motor, it is necessary to inspect the mechanical damage of the bearing through noises caused by the mechanical damages and vibrations caused by electromagnetic noises. As an inspection device therefor, for example, Japanese Patent Laid-Open No. 05-126627
The publication discloses an inspection device for inspecting a small motor having a high natural frequency such as a high-speed rotation motor (spindle motor) of a magnetic recording / reproducing device. This inspection device
This is to inspect a motor incorporating a bearing unit, that is, in a product state, for noise (vibration) associated with mechanical damage to the bearing unit.

【0003】上記した検査装置は、図6に示すように、
モータ保持台1と、振動音検出器を内蔵した振動音測定
端子2と、この振動音測定端子2を加圧する加圧手段3
と、振動音測定端子2に接続された判別手段4と、モー
タ駆動回路5とを備えている。そしてこのような構成に
より、モータ保持台1にモータユニット6を設置し、そ
の非回転部(ここではシャフト固定型であるためシャフ
ト6a)に振動音測定端子2を押し当てて加圧手段3に
より所定圧を負荷し、その状態で、モータ駆動回路5に
よりモータユニット6を回転駆動させて、振動音測定端
子2を通じて振動音(振動加速度)を検出し、検出され
た振動音が所定レベル(設定値)以下か否かを判別手段
4で判別するようにしている。
As shown in FIG. 6, the above-mentioned inspection device is
A motor holding base 1, a vibration sound measuring terminal 2 having a built-in vibration sound detector, and a pressurizing means 3 for pressurizing the vibration sound measuring terminal 2.
And a discrimination means 4 connected to the vibration sound measuring terminal 2 and a motor drive circuit 5. With such a configuration, the motor unit 6 is installed on the motor holding base 1, and the vibrating sound measuring terminal 2 is pressed against the non-rotating portion (here, the shaft 6a is a shaft fixed type), and the pressing means 3 is used. A predetermined pressure is applied, and in that state, the motor drive circuit 5 rotationally drives the motor unit 6 to detect a vibration sound (vibration acceleration) through the vibration sound measurement terminal 2, and the detected vibration sound has a predetermined level (setting). The determination means 4 determines whether the value is less than or equal to the value.

【0004】ここで、振動加速度aは次式で表わされ、
その振幅(A・(2πf)2)は周波数の増加に伴って
大となるので、振動加速度を用いて検査することで、感
度よく、確実に良否判定できるのである。
Here, the vibration acceleration a is expressed by the following equation,
Since its amplitude (A · (2πf) 2 ) becomes large as the frequency increases, it is possible to make a pass / fail judgment with good sensitivity by conducting inspection using vibration acceleration.

【0005】a(t)=−A・(2πf)2sin2πft f:振動数、A:定数、t:時間 図7は、上記したのと同様の検査装置を用いて、モータ
ユニットへの組み込み前の軸受ユニットを検査する状態
を示す。この軸受ユニット11は、シャフト12を、軸
受外輪13,軸受外輪14のそれぞれに保持されたボー
ル13a,14aで支承するようにしたものである。シ
ャフト12の所定位置には、ボール13a,14aの軸
方向移動を規制するためにボール保持溝(図示せず)が
形成され、軸受外輪13,軸受外輪14は、軸心方向に
伸縮可能な予圧バネ15で連結されることにより、一定
間隔に保たれている。
A (t) =-A (2πf) 2 sin 2πft f: frequency, A: constant, t: time FIG. 7 shows the same inspection device as described above before the assembly into the motor unit. 2 shows a state of inspecting the bearing unit of FIG. The bearing unit 11 has a shaft 12 supported by balls 13a and 14a held by a bearing outer ring 13 and a bearing outer ring 14, respectively. A ball holding groove (not shown) is formed at a predetermined position of the shaft 12 in order to restrict axial movement of the balls 13a and 14a, and the bearing outer ring 13 and the bearing outer ring 14 are preloaded so as to expand and contract in the axial direction. By being connected by the spring 15, they are kept at a constant interval.

【0006】そこで検査時には、一方の軸受外輪13を
外輪受け16と測定端子17とで固定し、シャフト12
を自在継ぎ手18を介して駆動モータ19に連結し、こ
の駆動モータ19によりシャフト12を強制回転させ
て、軸受外輪13の振動音を測定端子17を通じて検出
し、検出された振動音が所定レベル(設定値)以下か否
かを判別手段9で判別するのである。
Therefore, at the time of inspection, one bearing outer ring 13 is fixed by the outer ring receiver 16 and the measuring terminal 17, and the shaft 12
Is connected to a drive motor 19 via a universal joint 18, the shaft 12 is forcibly rotated by the drive motor 19, and the vibration sound of the bearing outer ring 13 is detected through the measuring terminal 17, and the detected vibration sound has a predetermined level ( The determination means 9 determines whether or not the value is less than or equal to the set value.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、上記し
たような軸受ユニット11状態での検査方法では、シャ
フト12を強制回転させる際の振動成分等が検出され、
測定バラツキが大きくなるため、著しい異常値は判別で
きるものの、設定値付近の振動音評価は困難である。そ
のため、製品状態での検査で振動音異常が検出された場
合に、軸受ユニット11状態で存在していた問題か、軸
受ユニット11を製品組み込み状態としたことで発生し
た問題か、明確に評価できないという問題があった。
However, in the inspection method in the state of the bearing unit 11 as described above, the vibration component and the like when the shaft 12 is forcibly rotated are detected,
Due to the large variation in measurement, significant abnormal values can be discriminated, but it is difficult to evaluate vibration noise near the set value. Therefore, when vibration noise abnormality is detected in the inspection in the product state, it is not possible to clearly evaluate whether the problem exists in the state of the bearing unit 11 or the problem that occurs when the bearing unit 11 is set in the product state. There was a problem.

【0008】本発明は上記問題を解決するもので、製品
組み込み状態と同様の振動音検査を軸受装置状態で実施
できる検査装置および検査方法を提供することを目的と
するものである。
The present invention solves the above problems, and an object of the present invention is to provide an inspection device and an inspection method capable of performing a vibration noise inspection similar to the product installation state in a bearing device state.

【0009】[0009]

【課題を解決するための手段】上記課題を解決するため
に本発明は、すり割り部を設けた円筒状スリーブ治具に
軸受ユニット(軸受装置)を挿入し、このスリーブ治具
を検査用ロータに装着して、振動音を検査するようにし
たものである。つまり、スリーブ治具と検査用ロータと
によって、軸受装置組み込み製品と同様の構造を実現し
たものである。こうすることによって、軸受装置状態
で、軸受装置組み込み製品と同仕様の振動音検査が実施
可能となった。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention inserts a bearing unit (bearing device) into a cylindrical sleeve jig provided with a slit portion, and uses this sleeve jig for inspection rotor. It is attached to the device to check the vibration sound. In other words, the sleeve jig and the inspection rotor realize the same structure as that of the bearing device built-in product. By doing so, it is possible to perform vibration noise inspection with the same specifications as the bearing device built-in product in the bearing device state.

【0010】すなわち、請求項1記載の軸受装置の検査
装置は、2個の軸受外輪をバネ部材で連結して一定間隔
に保ち、前記2個の軸受外輪の内周に配置したボールで
シャフトを支承した軸受装置を検査対象として、回転駆
動時の振動音を測定し検査する軸受装置の検査装置であ
って、すり割り部を有し前記軸受装置の軸受外輪を内周
に保持可能な円筒状スリーブ治具と、前記スリーブ治具
を内部に装着可能なロータ治具と、前記ロータ治具内に
装着されたスリーブ治具より突出した軸受装置のシャフ
トの一端を固定する固定部と、前記ロータ治具を回転さ
せるステータ部とを同心状に配した固定ベースと、前記
ステータ部を介してロータ治具を回転制御する回転制御
手段と、前記ロータ治具内に装着されたスリーブ治具よ
り突出した軸受装置のシャフトの他端を押圧固定する振
動測定端子と、この測定端子と内蔵されたセンサ部とを
有し、前記ロータ治具と一体に回転する前記軸受外輪の
回転時に、非回転部材たる前記シャフトの振動音を測定
する振動測定手段とを備えたことを特徴とする。
That is, in the inspection device for a bearing device according to the first aspect of the invention, two bearing outer rings are connected by a spring member to keep them at regular intervals, and the shaft is formed by balls arranged on the inner circumference of the two bearing outer rings. A bearing device inspection device for measuring and inspecting vibration noise at the time of rotational driving of a supported bearing device as an inspection object, which is a cylindrical shape having a slit portion and capable of holding the bearing outer ring of the bearing device on the inner circumference. A sleeve jig; a rotor jig in which the sleeve jig can be mounted; a fixing portion for fixing one end of a shaft of a bearing device protruding from the sleeve jig mounted in the rotor jig; A fixed base in which a stator portion for rotating the jig is arranged concentrically, a rotation control means for controlling the rotation of the rotor jig through the stator portion, and a sleeve jig mounted in the rotor jig. Bearing The shaft, which is a non-rotating member, has a vibration measuring terminal for pressing and fixing the other end of the shaft, and a sensor section built in the measuring terminal, and when the outer ring of the bearing that rotates integrally with the rotor jig rotates. And a vibration measuring means for measuring the vibration sound of the.

【0011】上記構成によれば、軸受装置を円筒状スリ
ーブ治具に保持しロータ治具に装着することによって、
軸受装置組み込み製品と同様の構造を実現したので、軸
受装置状態でありながら、軸受装置組み込み製品状態で
の検査と同じ回転数、同じ振動測定手段で検査すること
が可能になった。よって、この軸受装置状態の検査と後
段の製品状態での検査で、振動固有成分が同じ周波数に
て振動音を確認することができ、軸受装置状態での測定
値と、製品状態での測定値との相関性が向上する。また
この軸受装置状態の検査で、振動音レベルの数値オフセ
ットを要することなく、振動音測定値をそのまま評価値
として使用することが可能になり、効率よく検査でき
る。しかも、円筒状スリーブ治具には、すり割り部の幅
を広げるだけで、軸受装置を損傷することなく容易に着
脱することができ、検査の量産性を向上できる。
According to the above construction, the bearing device is held by the cylindrical sleeve jig and mounted on the rotor jig,
Since the structure similar to that of the bearing device built-in product has been realized, it is possible to perform the inspection with the same rotation speed and the same vibration measuring means as the inspection in the bearing device built-in product state even in the bearing device state. Therefore, in this inspection of the bearing device state and the inspection of the product state in the subsequent stage, it is possible to confirm the vibration noise at the same frequency of the vibration characteristic component. The correlation with is improved. Further, in the inspection of the state of the bearing device, the vibration sound measurement value can be directly used as an evaluation value without requiring a numerical offset of the vibration sound level, and the inspection can be efficiently performed. Moreover, the bearing device can be easily attached / detached to / from the cylindrical sleeve jig only by widening the width of the slotted portion, and the mass productivity of inspection can be improved.

【0012】請求項2記載の軸受け装置の検査装置は、
請求項1記載の軸受装置の検査装置において、スリーブ
治具は、弾性材料を用いて、各軸受外輪の外周を固定可
能な内径寸法に構成したことを特徴とする。
An inspection device for a bearing device according to claim 2 is
In the inspection device for a bearing device according to the first aspect, the sleeve jig is made of an elastic material and has an inner diameter dimension capable of fixing the outer circumference of each bearing outer ring.

【0013】上記構成によれば、両端部の軸受外輪を固
定するスリーブ治具は、バネ部材をも軸心方向および径
方向に固定することになるため、外部駆動装置からの伝
達振動など、バネ部材やそれとのジョイント部分で発生
しやすいノイズとしての振動を抑制できる。
According to the above construction, the sleeve jig for fixing the bearing outer rings at both ends also fixes the spring member in the axial direction and the radial direction. It is possible to suppress vibration as noise that is likely to occur in a member and a joint portion with the member.

【0014】請求項3記載の軸受け装置の検査装置は、
請求項2記載の軸受装置の検査装置において、スリーブ
治具の締め代が1〜10μmであることを特徴とする。
このような範囲の締め代に設定されたスリーブ治具は、
測定時におけるバネ部材の軸心方向および半径方向の変
形を抑制して、バネ部材から軸受外輪に負荷されている
予圧の変化を防止し、一定条件での振動音測定を可能と
する。軸受外輪の変形を来すこともない。
An inspection device for a bearing device according to claim 3 is
The bearing device inspecting apparatus according to claim 2 is characterized in that the sleeve jig has a tightening margin of 1 to 10 μm.
The sleeve jig set to the tightening margin in this range is
The deformation of the spring member in the axial direction and the radial direction at the time of measurement is suppressed, the change of the preload applied from the spring member to the bearing outer ring is prevented, and the vibration noise can be measured under a certain condition. The bearing outer ring is not deformed.

【0015】請求項4記載の軸受け装置の検査方法は、
2個の軸受外輪をバネ部材で連結して一定間隔に保ち、
前記2個の軸受外輪の内周に配置したボールでシャフト
を支承した軸受装置を検査対象として、回転駆動時の振
動音を測定し検査するに際し、すり割り部を設けた円筒
状スリーブ治具の内部に前記軸受装置を挿入し、このス
リーブ治具をロータ治具の内部に装着し、前記ロータ治
具内に装着されたスリーブ治具より突出した軸受装置の
シャフトの一端を固定ベースに固定し、前記ロータ治具
内に装着されたスリーブ治具より突出した軸受装置のシ
ャフトの他端を振動測定端子で押圧固定し、前記ロータ
治具を回転制御して前記軸受装置の軸受外輪を一体に回
転させる状態において、非回転部材たる前記シャフトの
振動音を前記振動測定端子を通じて振動測定手段にて測
定することを特徴とする。
According to a fourth aspect of the present invention, there is provided a bearing device inspecting method.
The two bearing outer rings are connected by a spring member to keep them at a fixed interval,
When a bearing device having a shaft supported by balls arranged on the inner circumference of the two bearing outer rings is to be inspected and a vibration sound at the time of rotational driving is measured and inspected, a cylindrical sleeve jig provided with a slit portion is provided. Insert the bearing device inside, mount the sleeve jig inside the rotor jig, and fix one end of the shaft of the bearing device protruding from the sleeve jig mounted inside the rotor jig to the fixed base. , The other end of the shaft of the bearing device protruding from the sleeve jig installed in the rotor jig is pressed and fixed by a vibration measuring terminal, and the rotor jig is rotationally controlled to integrally form the bearing outer ring of the bearing device. In the rotating state, the vibration sound of the shaft, which is a non-rotating member, is measured by the vibration measuring means through the vibration measuring terminal.

【0016】[0016]

【発明の実施の形態】以下、本発明の実施の形態を、図
面を参照しながら説明する。図1に示すように、検査対
象の軸受ユニット11は、先に図7を用いて説明した従
来のものと同様の構成を有しており、シャフト12は、
軸受外輪13,軸受外輪14のそれぞれに保持されたボ
ール13a,14aで回転自在に支承されている。シャ
フト12の所定位置には、ボール13a,14aの軸方
向移動を規制するためのボール保持溝(図示せず)が形
成され、軸受外輪13,軸受外輪14は、これらを軸心
方向に付勢する予圧バネ15で連結されることにより、
一定間隔に保たれている。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the bearing unit 11 to be inspected has the same structure as the conventional one described with reference to FIG. 7, and the shaft 12 is
The bearing outer ring 13 and the bearing outer ring 14 are rotatably supported by balls 13a and 14a held respectively. A ball holding groove (not shown) for restricting the axial movement of the balls 13a and 14a is formed at a predetermined position of the shaft 12, and the bearing outer ring 13 and the bearing outer ring 14 bias these in the axial direction. By connecting with the preload spring 15,
It is kept at regular intervals.

【0017】図2は、軸受ユニット11を振動音検査す
る際に使用する円筒状スリーブ治具20を示す。このス
リーブ治具20には、軸心方向に沿うスリット21が1
端から他端まで形成されている。また、軸心方向に沿う
1端および他端の内周に、内方に一定寸法にて突出した
鍔部22,23が形成され、軸心方向に沿う中央部の外
周に、外方に一定寸法にて突出した鍔部24が形成さ
れ、軸心方向に沿う1端の外周に、一定寸法にて窪んだ
段部25が周方向に沿って形成されている。なおこのス
リーブ治具20は、アルミニウムやシンチュウなどの適
度な弾性を有する材料を用いて作成されていて、拡径・
縮径可能、かつ締め代(軸受外輪13,14の外径−ス
リーブ治具20の内径)が1〜10μmの範囲(好まし
くは2〜6μmの範囲)となるように構成されている。
FIG. 2 shows a cylindrical sleeve jig 20 used when inspecting the bearing unit 11 for vibration noise. The sleeve jig 20 has a slit 21 extending in the axial direction.
It is formed from one end to the other. Further, flange portions 22 and 23 protruding inward at a constant size are formed on the inner circumferences of one end and the other end along the axial direction, and are fixed outward on the outer circumference of the central portion along the axial direction. A collar portion 24 protruding in size is formed, and a step portion 25 recessed in a certain dimension is formed along the circumferential direction on the outer periphery of one end along the axial direction. The sleeve jig 20 is made of a material having appropriate elasticity, such as aluminum or Shinchu, and has a large diameter.
The diameter can be reduced, and the tightening margin (outer diameter of the bearing outer rings 13 and 14-inner diameter of the sleeve jig 20) is in the range of 1 to 10 m (preferably in the range of 2 to 6 m).

【0018】検査に際して、図3に示すように、スリー
ブ治具20に対して検査対象の軸受ユニット11を保持
する。それには、スリーブ治具20の内径をスリット2
1によって広げたうえで、軸受ユニット11を、軸受外
輪13,14の外周が鍔部22,23の内周に対向する
定位置まで挿入し、その状態でスリット21を元にもど
す。この作業により、予圧バネ15にて負荷されている
予圧荷重を損なうことなく、軸受外輪13,14を拘束
できる。このようなスリーブ治具20への挿入状態で
は、軸受ユニット11の一端、他端ともスリーブ治具2
0から突出している。軸受ユニット11を取り外す時に
は、これと逆の手順による。
At the time of inspection, as shown in FIG. 3, the bearing unit 11 to be inspected is held against the sleeve jig 20. To do this, set the inner diameter of the sleeve jig 20 to the slit 2
After being expanded by 1, the bearing unit 11 is inserted to a fixed position where the outer circumferences of the bearing outer races 13 and 14 face the inner circumferences of the collar portions 22 and 23, and then the slit 21 is returned to the original position. By this work, the bearing outer rings 13 and 14 can be restrained without impairing the preload applied by the preload spring 15. In such a state of insertion into the sleeve jig 20, both ends of the bearing unit 11 and the other end of the sleeve jig 2 are
It projects from 0. When the bearing unit 11 is removed, the procedure is reversed.

【0019】図4は、軸受ユニット11をスリーブ治具
20に保持して振動音検査装置にセットした状態を示
す。この振動音検査装置では、キャップ状の固定ベース
26の底部に、軸受ユニット11のシャフト12の一端
部の外径を拘束可能な円筒状のシャフトガイド27が取
り付けられ、固定ベース26の立ち上がり部に、駆動回
路28に接続されたステータ29が前記シャフトガイド
27と同軸状に取り付けられている。
FIG. 4 shows a state in which the bearing unit 11 is held by the sleeve jig 20 and set in the vibration noise inspection device. In this vibration sound inspection apparatus, a cylindrical shaft guide 27 capable of restraining the outer diameter of one end of the shaft 12 of the bearing unit 11 is attached to the bottom of the cap-shaped fixed base 26, and the rising portion of the fixed base 26 is attached to the rising portion. A stator 29 connected to the drive circuit 28 is mounted coaxially with the shaft guide 27.

【0020】固定ベース26の内外には、軸受ユニット
11を保持したスリーブ治具20を回転駆動するための
円筒状ロータ治具30と、このロータ治具30の回転ト
ルクを向上させるための円筒状サブロータ治具31と、
シャフトガイド27の軸心方向に沿って移動可能な振動
音測定端子32とが配置されている。振動音測定端子3
2はセンサ部32aを内蔵し、判別手段33に接続され
ている。
A cylindrical rotor jig 30 for rotationally driving the sleeve jig 20 holding the bearing unit 11 is provided inside and outside the fixed base 26, and a cylindrical rotor jig 30 for improving the rotational torque of the rotor jig 30. A sub-rotor jig 31,
A vibration sound measuring terminal 32 that is movable along the axial direction of the shaft guide 27 is arranged. Vibration sound measurement terminal 3
Reference numeral 2 has a built-in sensor portion 32a and is connected to the discrimination means 33.

【0021】ロータ治具30は、ステータ29に対応す
る磁石部30aが設けられた円環部30bを下部外周に
有するとともに、スリーブ治具20の外周の鍔部24と
同一寸法だけ内方へ突出した鍔部30cを上部内周に有
している。
The rotor jig 30 has an annular portion 30b provided with a magnet portion 30a corresponding to the stator 29 on the outer circumference of the lower portion, and projects inward by the same size as the collar portion 24 on the outer circumference of the sleeve jig 20. The collar portion 30c is formed on the inner circumference of the upper portion.

【0022】サブロータ治具31は、その円筒上部にお
いてスリーブ治具20の外周の段部25に外嵌可能であ
り、下部外周に円環部31aを有しており、この円環部
31aがステータ29の下方に入り込むように、前記シ
ャフトガイド27と同軸状に、かつ軸心方向に移動自在
に、固定ベース26に取り付けられている。(固定ベー
ス26への取付部材の図示は省略する。) このような状態に軸受ユニット11をセットするには、
上記したように軸受ユニット11を保持したスリーブ治
具20を、軸受ユニット11のシャフト12の一端がシ
ャフトガイド27に嵌入し、かつスリーブ治具20の外
周の段部25にサブロータ治具31の上部が外嵌するよ
うに、固定ベース26上に配置し、それとともに、スリ
ーブ治具20の外周にロータ治具30を配置する。その
後に、シャフト12の他端に振動音測定端子32の荷重
を加えて、シャフト12を固定する。
The sub-rotor jig 31 can be externally fitted to the step portion 25 on the outer periphery of the sleeve jig 20 at the upper part of the cylinder, and has an annular portion 31a on the outer periphery of the lower portion. This annular portion 31a is a stator. It is attached to the fixed base 26 coaxially with the shaft guide 27 so as to enter below 29, and is movable in the axial direction. (The illustration of the mounting member to the fixed base 26 is omitted.) To set the bearing unit 11 in such a state,
As described above, the sleeve jig 20 holding the bearing unit 11 is fitted into the shaft guide 27 at one end of the shaft 12 of the bearing unit 11, and the upper portion of the sub-rotor jig 31 is attached to the step 25 on the outer periphery of the sleeve jig 20. Are arranged on the fixed base 26 so that the outer circumference of the sleeve jig 20 is fitted, and the rotor jig 30 is arranged on the outer circumference of the sleeve jig 20. After that, the load of the vibration sound measuring terminal 32 is applied to the other end of the shaft 12 to fix the shaft 12.

【0023】そしてこの状態で、駆動回路28によりス
テータ29に電気を供給して、ロータ治具30,サブロ
ータ治具31を回転制御し、両治具に一体化されたスリ
ーブ治具20を介して軸受外輪13,14を回転させ、
その際のシャフト12の振動音を振動音測定端子32の
センサ部32aて測定し、測定された振動音が所定レベ
ル以下か否かを判別手段33で判別する。
In this state, the drive circuit 28 supplies electricity to the stator 29 to control the rotation of the rotor jig 30 and the sub-rotor jig 31, and the sleeve jig 20 integrated with both jigs is used. Rotate the bearing outer rings 13 and 14,
The vibration sound of the shaft 12 at that time is measured by the sensor portion 32a of the vibration sound measurement terminal 32, and the determination unit 33 determines whether or not the measured vibration sound is below a predetermined level.

【0024】このようにすることにより、軸受ユニット
11状態で、スピンドルモータなどのモータ製品と同仕
様の振動音検査を実施できる。その結果、軸受ユニット
11状態での振動音検査レベルの信頼性が向上するとと
もに、軸受ユニット11の振動音の出荷品質及び着荷品
質の評価が容易になり、品質の安定化を図れる。
By doing so, it is possible to carry out a vibration sound inspection having the same specifications as a motor product such as a spindle motor in the state of the bearing unit 11. As a result, the reliability of the vibration noise inspection level in the state of the bearing unit 11 is improved, and the shipping quality and the loading quality of the vibration noise of the bearing unit 11 are easily evaluated, and the quality can be stabilized.

【0025】なおこのとき、シャフト12の両端を固定
する構成としたため、シャフト12に対して一定の位置
を占めるスリーブ治具20の鍔部24がロータ治具30
を高さ規制するだけでなく、スリーブ治具20の外周が
ロータ治具30の内周に当接して、ロータ治具30をシ
ャフト12と同心状に配置することになり、ロータ治具
30の軸ふれを抑制する。また、スリーブ治具20の段
部25が、ロータ治具30の磁気吸引力にて吸引される
サブロータ治具31を高さ規制する。よって、ロータ治
具30,ステータ29,サブロータ治具31は自動的に
所定間隔にて配置されることになり、これらの間の隙間
調整は不要である。
At this time, since both ends of the shaft 12 are fixed, the collar portion 24 of the sleeve jig 20 occupying a certain position with respect to the shaft 12 is fixed to the rotor jig 30.
Not only the height of the rotor jig 30 is restricted, but the outer circumference of the sleeve jig 20 abuts on the inner circumference of the rotor jig 30, and the rotor jig 30 is arranged concentrically with the shaft 12. Suppress axial runout. Further, the step portion 25 of the sleeve jig 20 regulates the height of the sub-rotor jig 31 that is attracted by the magnetic attraction force of the rotor jig 30. Therefore, the rotor jig 30, the stator 29, and the sub-rotor jig 31 are automatically arranged at a predetermined interval, and it is not necessary to adjust the gap between them.

【0026】図5(a) は、上記したような軸受ユニット
11を、図3にて説明したようなスリーブ治具20およ
び振動音検査装置を用いて、軸受ユニット状態で振動音
検査した際の測定値と、製品組み込み状態で振動音検査
した際の測定値との相関を示す。図5(b) は、上記した
ような軸受ユニット11を、図7にて説明したような従
来の振動音検査装置を用いて、軸受ユニット状態で振動
音検査した際の測定値と、製品組み込み状態で振動音検
査した際の測定値との相関を示す。
FIG. 5 (a) shows a vibration sound test of the bearing unit 11 as described above in the bearing unit state using the sleeve jig 20 and the vibration sound test apparatus as described in FIG. The correlation between the measured value and the measured value when the vibration sound inspection is performed in the state where the product is incorporated is shown. FIG. 5 (b) shows the measured values when the bearing unit 11 as described above is inspected for vibration noise in the bearing unit state by using the conventional vibration noise inspection device as described in FIG. The correlation with the measured value at the time of inspecting vibration noise in the state is shown.

【0027】図5(a)(b)からわかるように、従来の振動
音検査方法では、製品組み込み状態でのバラツキは0.
17以上あるのに対し、本発明の振動音検査方法では、
製品組み込み状態でのバラツキは0.1以下であり、従
来に比べて、軸受ユニット状態での測定値と製品組み込
み状態での測定値との相関性が170%程度まで向上し
ている。
As can be seen from FIGS. 5 (a) and 5 (b), in the conventional vibration noise inspection method, the variation in the assembled state of the product is 0.
While there are 17 or more, in the vibration sound inspection method of the present invention,
The variation in the product built-in state is 0.1 or less, and the correlation between the measured value in the bearing unit state and the measured value in the product built-in state is improved to about 170% compared to the conventional case.

【0028】[0028]

【発明の効果】以上のように本発明によれば、軸受装置
について、スリットを設けたスリーブ治具とロータ治具
とを用いて、製品組み込み状態と同様の構造を実現し、
振動音検査するようにしたので、軸受装置状態での検査
結果と製品組み込み状態での検査結果との相関を向上さ
せることが可能になり、軸受装置を高い信頼性にて評価
し、軸受装置、およびその組み込み製品の品質向上を実
現することが可能になった。
As described above, according to the present invention, with respect to the bearing device, the same structure as that of the product assembled state is realized by using the sleeve jig having the slit and the rotor jig.
Since vibration noise inspection is performed, it is possible to improve the correlation between the inspection result in the bearing device state and the inspection result in the product built-in state, and the bearing device can be evaluated with high reliability. It has become possible to improve the quality of embedded products.

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

【図1】検査対象の軸受ユニットの断面図FIG. 1 is a sectional view of a bearing unit to be inspected.

【図2】図1の軸受ユニットを検査する際に用いるスリ
ーブ治具2の(a) 正面図および(b) 斜視図
2A is a front view and FIG. 2B is a perspective view of a sleeve jig 2 used when inspecting the bearing unit of FIG.

【図3】図1の軸受ユニットを図2のスリーブ治具に挿
入した状態を示す(a) 正面図および(b) 斜視図
3 (a) is a front view and FIG. 3 (b) is a perspective view showing a state in which the bearing unit of FIG. 1 is inserted into the sleeve jig of FIG.

【図4】図3に示したように軸受ユニットを挿入したス
リーブ治具を振動音検査装置に設置した状態を示す断面
FIG. 4 is a cross-sectional view showing a state in which the sleeve jig in which the bearing unit is inserted as shown in FIG. 3 is installed in the vibration noise inspection device.

【図5】図1の軸受ユニットを、(a) 本発明のスリーブ
治具および振動音検査装置を用いて軸受ユニット状態で
振動音検査した際の測定値と、製品組み込み状態で振動
音検査した際の測定値との相関を示すグラフ、および、
(b) 従来の振動音検査装置を用いて軸受ユニット状態で
振動音検査した際の測定値と、製品組み込み状態で振動
音検査した際の測定値との相関を示すグラフ
5A and 5B are (a) a measurement value when a vibration noise is inspected in a bearing unit state using the sleeve jig and the vibration noise inspection device of the present invention, and a vibration noise is inspected in a product incorporated state. Graph showing the correlation with the measured value at the time, and
(b) Graph showing the correlation between the measured values when a vibration noise test is performed in the bearing unit state using a conventional vibration noise inspection device and the measured values when a vibration noise test is performed in the product built-in state

【図6】軸受ユニットを、従来の振動音検査装置を用い
て製品組み込み状態で振動音検査する状態を示す断面図
FIG. 6 is a cross-sectional view showing a state in which a bearing unit is inspected for vibration noise in a product-installed state using a conventional vibration noise inspection device.

【図7】軸受ユニットを、従来の振動音検査装置を用い
て軸受ユニット状態で振動音検査する状態を示す断面図
FIG. 7 is a sectional view showing a state where a bearing unit is inspected for vibration noise in a bearing unit state using a conventional vibration noise inspection device.

【符号の説明】[Explanation of symbols]

11 軸受ユニット 12 シャフト 13,14 軸受外輪 13a,14a ボール 15 予圧バネ 20 スリーブ治具 21 スリット 26 固定ベース 27 シャフトガイド(固定部) 28 駆動回路(回転制御手段) 29 ステータ 30 ロータ治具 32 振動測定端子 32a センサ部 11 Bearing unit 12 shafts 13, 14 Bearing outer ring 13a, 14a balls 15 Preload spring 20 Sleeve jig 21 slits 26 Fixed base 27 Shaft guide (fixed part) 28 Drive circuit (rotation control means) 29 Stator 30 rotor jig 32 Vibration measurement terminal 32a Sensor part

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 2個の軸受外輪をバネ部材で連結して一
定間隔に保ち、前記2個の軸受外輪の内周に配置したボ
ールでシャフトを支承した軸受装置を検査対象として、
回転駆動時の振動音を測定し検査する軸受装置の検査装
置であって、 すり割り部を有し前記軸受装置の軸受外輪を内周に保持
可能な円筒状スリーブ治具と、 前記スリーブ治具を内部に装着可能なロータ治具と、 前記ロータ治具内に装着されたスリーブ治具より突出し
た軸受装置のシャフトの一端を固定する固定部と、前記
ロータ治具を回転させるステータ部とを同心状に配した
固定ベースと、 前記ステータ部を介してロータ治具を回転制御する回転
制御手段と、 前記ロータ治具内に装着されたスリーブ治具より突出し
た軸受装置のシャフトの他端を押圧固定する振動測定端
子と、この測定端子と内蔵されたセンサ部とを有し、前
記ロータ治具と一体に回転する前記軸受外輪の回転時
に、非回転部材たる前記シャフトの振動音を測定する振
動測定手段とを備えた軸受装置の検査装置。
1. A bearing device in which two bearing outer rings are connected by a spring member and kept at a constant interval, and a shaft is supported by balls arranged on the inner periphery of the two bearing outer rings as an inspection target.
A bearing device inspecting device for measuring and inspecting vibration noise during rotational driving, comprising: a cylindrical sleeve jig having a slit portion and capable of holding a bearing outer ring of the bearing device on an inner circumference; A rotor jig that can be mounted inside, a fixing portion that fixes one end of the shaft of the bearing device that protrudes from the sleeve jig that is mounted inside the rotor jig, and a stator portion that rotates the rotor jig. A fixed base arranged concentrically, rotation control means for controlling rotation of the rotor jig through the stator portion, and the other end of the shaft of the bearing device protruding from the sleeve jig mounted in the rotor jig. It has a vibration measuring terminal for pressing and fixing, and a sensor section built in this measuring terminal, and measures the vibration noise of the shaft, which is a non-rotating member, when the outer ring of the bearing that rotates integrally with the rotor jig rotates. Shaking Inspection device of the bearing device equipped with a measuring means.
【請求項2】 スリーブ治具は、弾性材料を用いて、各
軸受外輪の外周を固定可能な内径寸法に構成したことを
特徴とする請求項1記載の軸受装置の検査装置。
2. The inspection device for a bearing device according to claim 1, wherein the sleeve jig is made of an elastic material and has an inner diameter dimension capable of fixing the outer circumference of each bearing outer ring.
【請求項3】 スリーブ治具の締め代が1〜10μmで
あることを特徴とする請求項2記載の軸受装置の検査装
置。
3. The inspection device for the bearing device according to claim 2, wherein the tightening margin of the sleeve jig is 1 to 10 μm.
【請求項4】 2個の軸受外輪をバネ部材で連結して一
定間隔に保ち、前記2個の軸受外輪の内周に配置したボ
ールでシャフトを支承した軸受装置を検査対象として、
回転駆動時の振動音を測定し検査する軸受装置の検査方
法であって、 すり割り部を設けた円筒状スリーブ治具の内部に前記軸
受装置を挿入し、 このスリーブ治具をロータ治具の内部に装着し、 前記ロータ治具内に装着されたスリーブ治具より突出し
た軸受装置のシャフトの一端を固定ベースに固定し、 前記ロータ治具内に装着されたスリーブ治具より突出し
た軸受装置のシャフトの他端を振動測定端子で押圧固定
し、 前記ロータ治具を回転制御して前記軸受装置の軸受外輪
を一体に回転させる状態において、非回転部材たる前記
シャフトの振動音を前記振動測定端子を通じて測定する
ことを特徴とする軸受装置の検査方法。
4. A bearing device in which two bearing outer rings are connected by a spring member and kept at a constant interval, and a shaft is supported by balls arranged on the inner circumference of the two bearing outer rings as an inspection target.
A method of inspecting a bearing device for measuring and inspecting vibration noise during rotational driving, comprising inserting the bearing device into a cylindrical sleeve jig provided with a slotted portion, and inserting the sleeve jig into a rotor jig. A bearing device that is mounted inside and that has one end of the shaft of the bearing device that projects from the sleeve jig that is installed in the rotor jig fixed to a fixed base, and that projects from the sleeve jig that is installed in the rotor jig The other end of the shaft is pressed and fixed by a vibration measurement terminal, and the vibration sound of the shaft, which is a non-rotating member, is measured in the state where the rotor outer ring of the bearing device is integrally rotated by rotationally controlling the rotor jig. A method for inspecting a bearing device, which comprises measuring through a terminal.
JP2001348126A 2001-11-14 2001-11-14 Apparatus and method for inspecting bearing device Pending JP2003149084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001348126A JP2003149084A (en) 2001-11-14 2001-11-14 Apparatus and method for inspecting bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001348126A JP2003149084A (en) 2001-11-14 2001-11-14 Apparatus and method for inspecting bearing device

Publications (1)

Publication Number Publication Date
JP2003149084A true JP2003149084A (en) 2003-05-21

Family

ID=19161000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001348126A Pending JP2003149084A (en) 2001-11-14 2001-11-14 Apparatus and method for inspecting bearing device

Country Status (1)

Country Link
JP (1) JP2003149084A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7107850B2 (en) * 2003-05-15 2006-09-19 Nsk Ltd. Bearing vibration measuring apparatus, bearing vibration measuring method, and radial type bearing
KR100709889B1 (en) * 2003-05-26 2007-04-20 주식회사 만도 Fixing jig device of material with serration
CN102735412A (en) * 2012-06-19 2012-10-17 宁波东煌轴承有限公司 Bearing vibration measurement machine
CN107014617A (en) * 2017-06-19 2017-08-04 沈阳飞机工业(集团)有限公司 The detection fixture of the shaped grooved self-lubricating bearing assembling of outer shroud
CN110068459A (en) * 2019-03-08 2019-07-30 天津大学 A kind of barrel-shaped disk shaped support system
CN112729642A (en) * 2020-12-07 2021-04-30 北京星航机电装备有限公司 Testing tool and testing method for pressure spring force value
CN117450886A (en) * 2023-12-26 2024-01-26 徐州优力同创科技股份有限公司 Bearing outer ring detection device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7107850B2 (en) * 2003-05-15 2006-09-19 Nsk Ltd. Bearing vibration measuring apparatus, bearing vibration measuring method, and radial type bearing
KR100709889B1 (en) * 2003-05-26 2007-04-20 주식회사 만도 Fixing jig device of material with serration
CN102735412A (en) * 2012-06-19 2012-10-17 宁波东煌轴承有限公司 Bearing vibration measurement machine
CN107014617A (en) * 2017-06-19 2017-08-04 沈阳飞机工业(集团)有限公司 The detection fixture of the shaped grooved self-lubricating bearing assembling of outer shroud
CN107014617B (en) * 2017-06-19 2023-04-18 沈阳飞机工业(集团)有限公司 Detection clamp for assembling outer ring grooved self-lubricating bearing
CN110068459A (en) * 2019-03-08 2019-07-30 天津大学 A kind of barrel-shaped disk shaped support system
CN110068459B (en) * 2019-03-08 2023-10-24 天津大学 Barrel-shaped disc-shaped supporting system
CN112729642A (en) * 2020-12-07 2021-04-30 北京星航机电装备有限公司 Testing tool and testing method for pressure spring force value
CN117450886A (en) * 2023-12-26 2024-01-26 徐州优力同创科技股份有限公司 Bearing outer ring detection device
CN117450886B (en) * 2023-12-26 2024-03-22 徐州优力同创科技股份有限公司 Bearing outer ring detection device

Similar Documents

Publication Publication Date Title
US20060162717A1 (en) Apparatus and methods for aligning a center of mass with a rotational axis of a shaft or spindle
JP2003149084A (en) Apparatus and method for inspecting bearing device
US5367909A (en) Test weight
JP2005315681A (en) Bearing testing device
US6628477B1 (en) Spindle motor with temperature compensation
KR100288928B1 (en) Disk drive device
JP6697888B2 (en) Surveying equipment
JP2002272069A (en) Disk motor and optical disk unit using it
US7908737B2 (en) Production method of fluid dynamic-pressure bearing in spindle motor
JPH07318456A (en) High speed spin testing device
SU1751654A1 (en) Device for checking rolling bearings
JP2002039177A (en) Non-contact bearing spindle device
US6173234B1 (en) Axial bearing fly-height measurement to detect oil deficiency
JP4075030B2 (en) Rolling bearing device
US5644084A (en) Method of measuring natural frequency of motor
JP2004072967A (en) Rotation inspecting device for magnet coupling
JPH04366014A (en) Pre-load measuring method for rolling ball bearing
JP2003075298A (en) Equipment for inspecting vibration characteristics
JP2005069884A (en) Dynamic torque measuring apparatus for ball bearing
KR930001872B1 (en) Rotary encoder
JP2005192385A (en) Spindle motor
US20190383325A1 (en) Preload judgement device and preload judgement method
JPS6237152Y2 (en)
JP2005331441A (en) Bearing unit with built-in torque meter, and assembling method therefor
JPS61136017A (en) Spindle support mechanism