JP2000205857A - Method and device for manufacturing bearing - Google Patents

Method and device for manufacturing bearing

Info

Publication number
JP2000205857A
JP2000205857A JP11011382A JP1138299A JP2000205857A JP 2000205857 A JP2000205857 A JP 2000205857A JP 11011382 A JP11011382 A JP 11011382A JP 1138299 A JP1138299 A JP 1138299A JP 2000205857 A JP2000205857 A JP 2000205857A
Authority
JP
Japan
Prior art keywords
bearing
rotor shaft
manufacturing
inspected
motor
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
JP11011382A
Other languages
Japanese (ja)
Inventor
Shozo Goto
正三 後藤
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.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing 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 NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP11011382A priority Critical patent/JP2000205857A/en
Publication of JP2000205857A publication Critical patent/JP2000205857A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To easily and efficiently inspect a bearing of such a type that the bearing supports a shaft by the radial bearing surface of a slide bearing, etc., at the time of inspecting the bearing for deflection in the final process. SOLUTION: A method and device for manufacturing bearing are used for inspecting a cylindrical bearing 20 which becomes a slide bearing or dynamic bearing in the state of a single bearing or bearing unit in the inspection step of the final process. A seat section 2 in which the bearing 20 is removably put and an inspection device main body 1 provided with a motor 3 unprovided with a radial bearing are prepared. By putting the bearing 20 in the seat section 2, the rotor shaft 4 of the motor 3 is supported by the bearing 20. While the rotor shaft 4 is supported by the bearing 20, the motor 3 is rotated and the deflection of the rotor shaft 4 is detected with a displacement gauge 8.

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】この発明は、例えば、CD−
ROMやDVD等のコンピュータ周辺機器、音響機器等
のような精密機械におけるモータ用の滑り軸受、動圧軸
受などを製造する製造方法および製造装置に関し、特に
その最終検査の工程で簡便に効率良く検査する製造方法
および製造装置に関する。
The present invention relates to, for example, CD-
The present invention relates to a manufacturing method and a manufacturing apparatus for manufacturing a motor sliding bearing, a dynamic pressure bearing, and the like in a precision machine such as a computer peripheral device such as a ROM or a DVD or an acoustic device, and particularly easily and efficiently inspects the final inspection process. To a manufacturing method and a manufacturing apparatus.

【0002】[0002]

【従来の技術】CD−ROMやDVDの駆動用モータで
は、ディスク支持用のターンテーブルにロータ軸を直結
しており、ロータ軸の支持は、焼結含油軸受等の滑り軸
受や動圧軸受で支持する場合が多い。図4は、従来の光
ディスク駆動装置の一例を示す。モータ51は、軸受ユ
ニット52に垂直に支持されたロータ軸53と、軸受ユ
ニット52の外周に設けられたステータコイル54と、
ロータ軸53にターンテーブル56と共に固定されたロ
ータマグネット55とを備える。光ディスク57は、タ
ーンテーブル56とクランパ58で挟み付けられる。軸
受ユニット52は、軸受ハウジング59内にラジアル軸
受として焼結含油軸受等の滑り軸受60を設けたもので
あり、下端にはスラスト軸受61が取付けられている。
滑り軸受60は、多孔質の焼結金属からなる円筒体の内
径面に、上下に離れた二つのラジアル軸受面60a,6
0aを有し、潤滑油またはグリースが含浸させられてい
る。軸受60は、各ラジアル軸受面60a,60aに傾
斜状の動圧溝(図示せず)を設け、動圧軸受とされる場
合もある。このようなディスク駆動用のスピンドルモー
タ51の軸受60は、ターンテーブル56に直結される
ものであるため、ロータ軸53の振れを十分に防止でき
るものであることが必要である。そのため、軸受60の
精度として、軸の振れが小さなものであることが要求さ
れ、その検査が必要となる。
2. Description of the Related Art In a drive motor for a CD-ROM or DVD, a rotor shaft is directly connected to a turntable for supporting a disk, and the rotor shaft is supported by a sliding bearing such as a sintered oil-impregnated bearing or a dynamic pressure bearing. Often supported. FIG. 4 shows an example of a conventional optical disk drive. The motor 51 includes a rotor shaft 53 vertically supported by the bearing unit 52, a stator coil 54 provided on the outer periphery of the bearing unit 52,
The rotor shaft 53 includes a rotor magnet 55 fixed together with a turntable 56. The optical disk 57 is sandwiched between a turntable 56 and a clamper 58. The bearing unit 52 is provided with a sliding bearing 60 such as a sintered oil-impregnated bearing as a radial bearing in a bearing housing 59, and a thrust bearing 61 is attached to a lower end.
The sliding bearing 60 has two radial bearing surfaces 60a, 60 vertically separated from each other on an inner diameter surface of a cylindrical body made of a porous sintered metal.
0a, impregnated with lubricating oil or grease. The bearing 60 may be formed as a dynamic pressure bearing by providing an inclined dynamic pressure groove (not shown) on each of the radial bearing surfaces 60a, 60a. Since the bearing 60 of the spindle motor 51 for driving the disk is directly connected to the turntable 56, the bearing 60 needs to be able to sufficiently prevent the deflection of the rotor shaft 53. For this reason, the accuracy of the bearing 60 is required to have a small shaft runout, and the inspection is required.

【0003】[0003]

【発明が解決しようとする課題】しかし、従来は、軸受
を実際にモータに組み込んで軸の振れを変位計で測定す
る方法しかなく、組み込みや変位計のセットに多大の工
数を要し、軸受単体、あるいは軸受ユニットでの精度評
価は困難であった。
Conventionally, however, there is only a method of actually assembling a bearing into a motor and measuring the run-out of a shaft with a displacement meter. It was difficult to evaluate the accuracy of a single unit or a bearing unit.

【0004】この発明の目的は、滑り軸受等のラジアル
軸受面で軸を支持する形式の軸受の軸振れを、最終検査
する工程で、簡便に効率良く検査できる軸受の製造方法
および製造装置を提供することである。この発明の他の
目的は、最終検査の工程における検査精度の向上を図
り、優れた精度の軸受の製造を可能とすることである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a bearing manufacturing method and a manufacturing apparatus capable of easily and efficiently inspecting shaft runout of a bearing of a type in which a shaft is supported by a radial bearing surface such as a sliding bearing in a final inspection step. It is to be. Another object of the present invention is to improve the inspection accuracy in the final inspection process, and to manufacture a bearing with excellent accuracy.

【0005】[0005]

【課題を解決するための手段】この発明の軸受の製造方
法は、ラジアル軸受面で軸を支持する軸受の単体、また
は前記軸受が組込まれた軸受ユニットである被検査軸受
を最終検査する工程を含む軸受の製造方法であって、前
記最終検査の工程を次のように行うことを特徴とする。
すなわち、被検査軸受を着脱自在に嵌合させる座部、お
よびラジアル軸受未装備のモータを備えた検査装置本体
を準備する。上記座部に被検査軸受を嵌合させることに
より上記モータのロータ軸を被検査軸受で支持させた状
態で上記モータを回転させ、ロータ軸の振れを変位検出
手段で検出する。このように、通常のモータに対してラ
ジアル軸受を未装備としたモータ、および被検査軸受の
座部を有する検査装置本体を準備しておき、前記座部に
被検査軸受を嵌合させるだけで、実際のモータに使用し
た場合と同様な環境でロータ軸の振れを測定することが
できる。そのため、軸受の振れに対する精度を簡便に効
率良く、かつ高精度に検査することができる。この発明
方法において、上記ロータ軸として、この製造方法で製
造される製品となる軸受を使用する実機のロータ軸相当
のロータ軸を用いても良い。このように、実機相当のロ
ータ軸を用いることで、できるだけ実機に近い環境でロ
ータ軸の振れを測定することができ、そのため検査精度
が向上し、より優れた精度の軸受を製造することができ
る。
A method of manufacturing a bearing according to the present invention includes a step of performing a final inspection of a single bearing that supports a shaft on a radial bearing surface or a bearing to be inspected, which is a bearing unit incorporating the bearing. A method of manufacturing a bearing, comprising: performing the final inspection step as follows.
That is, an inspection device main body including a seat to which a bearing to be inspected is detachably fitted and a motor without a radial bearing are prepared. By fitting the bearing to be inspected to the seat, the motor is rotated while the rotor shaft of the motor is supported by the bearing to be inspected, and deflection of the rotor shaft is detected by displacement detecting means. As described above, a motor without a radial bearing for a normal motor and an inspection device main body having a seat of a bearing to be inspected are prepared in advance, and the bearing to be inspected is simply fitted to the seat. In addition, the runout of the rotor shaft can be measured in an environment similar to that when the motor is used for an actual motor. Therefore, it is possible to easily and efficiently inspect the accuracy with respect to the runout of the bearing and to perform the inspection with high accuracy. In the method of the present invention, a rotor shaft equivalent to a rotor shaft of an actual machine using a bearing which is a product manufactured by this manufacturing method may be used as the rotor shaft. As described above, by using the rotor shaft equivalent to the actual machine, the run-out of the rotor shaft can be measured in an environment as close as possible to the actual machine, so that the inspection accuracy is improved and a bearing with higher accuracy can be manufactured. .

【0006】この発明の軸受の検査装置は、ラジアル軸
受面で軸を支持する軸受の単体、または前記軸受が組込
まれた軸受ユニットである被検査軸受を最終検査する装
置を含む軸受の製造装置であって、前記最終検査を行う
装置を次の構成としたものである。すなわち、この検査
の装置は、被検査軸受を着脱自在に嵌合させる座部を有
する検査装置本体と、上記座部に嵌合した被検査軸受で
ロータ軸を支持するラジアル軸受未装備のモータと、上
記ロータ軸の振れを検出する変位検出手段とを備えたも
のとする。この発明の製造装置によると、この発明の上
記製造方法において、最終検査を行う過程で、軸受の振
れに対する精度を簡便に効率良く、かつ高精度に検査す
ることができる。
A bearing inspection apparatus according to the present invention is a bearing manufacturing apparatus including a bearing alone for supporting a shaft on a radial bearing surface, or a final inspection apparatus for a bearing to be inspected, which is a bearing unit incorporating the bearing. The apparatus for performing the final inspection has the following configuration. That is, the inspection apparatus includes an inspection apparatus main body having a seat portion to which the bearing to be inspected is removably fitted, and a motor without a radial bearing for supporting the rotor shaft with the bearing to be inspected fitted to the seat portion. And a displacement detecting means for detecting the deflection of the rotor shaft. According to the manufacturing apparatus of the present invention, in the above-described manufacturing method of the present invention, in the process of performing the final inspection, the accuracy with respect to the runout of the bearing can be easily and efficiently inspected with high accuracy.

【0007】この発明の軸受の製造装置において、上記
検査装置本体に上記モータのステータを設置し、上記ロ
ータ軸にロータを固定し、上記ロータを軸方向に非接触
で支持するスラスト受けを設け、上記変位検出手段は上
記ロータを介してロータ軸の振れを検出するものとして
も良い。この場合、スラスト受けによりロータの軸方向
の支持を非接触で行うため、ロータのラジアル方向の動
きをスラスト支持によって阻害することがなく、被検査
軸受の振れを精度良く検出することができる。また、ロ
ータを介してロータ軸の振れを検出するため、径の大き
な箇所で検出が行え、これによっても測定精度が向上す
る。上記スラスト受けは静圧気体軸受であっても良い。
このように静圧支持とした場合、ロータのラジアル方向
の動きの阻害が一層確実に回避でき、また優れた回転安
定性が得られ、したがってより一層精度の良い振れ検出
が行える。
In the bearing manufacturing apparatus of the present invention, a stator of the motor is installed in the inspection apparatus main body, a rotor is fixed to the rotor shaft, and a thrust receiver for supporting the rotor in a non-contact manner in the axial direction is provided. The displacement detecting means may detect a runout of the rotor shaft via the rotor. In this case, since the axial support of the rotor is performed in a non-contact manner by the thrust receiver, the radial movement of the rotor is not hindered by the thrust support, and the deflection of the bearing to be inspected can be accurately detected. Further, since the run-out of the rotor shaft is detected via the rotor, the detection can be performed at a location having a large diameter, thereby improving the measurement accuracy. The thrust receiver may be a hydrostatic gas bearing.
In the case of the static pressure support as described above, the hindrance of the radial movement of the rotor can be more reliably avoided, and excellent rotational stability can be obtained, so that more accurate deflection detection can be performed.

【0008】この発明の軸受の製造装置において、ロー
タ軸は竪方向に設けられたものであっても良い。ロータ
軸が竪方向である場合、被検査軸受も竪方向に配置する
ことになるため、検査装置本体の座部に嵌め込むだけで
安定状態に設置できる。また、記憶媒体となるディスク
の駆動装置に応用される軸受では、竪軸となる場合が多
く、使用形態に近い状態で軸受の検査が行える。
[0008] In the bearing manufacturing apparatus of the present invention, the rotor shaft may be provided vertically. When the rotor shaft is in the vertical direction, the bearing to be inspected is also arranged in the vertical direction, so that it can be installed in a stable state simply by fitting it into the seat of the inspection apparatus main body. Further, a bearing applied to a drive device for a disk serving as a storage medium often has a vertical axis, and the bearing can be inspected in a state close to a usage form.

【0009】この発明の軸受の製造装置において、上記
被検査軸受となる単体または軸受ユニットの軸受は、モ
ータのロータ軸支持用の軸受であって、焼結含油軸受か
らなる滑り軸受、または焼結金属からなる円筒状の多孔
質体の内径面に傾斜状の動圧溝を有するラジアル軸受面
を形成し、かつ潤滑剤を含浸させた動圧軸受であっても
良い。記憶媒体類のディスクの駆動用スピンドルモータ
は、この種の軸受が使用されることが多いが、このよう
な軸受を、この発明の製造装置で簡便に効率良く検査す
ることができる。この発明の製造装置において、上記ロ
ータ軸として、この製造装置で製造される製品となる軸
受を使用する実機のロータ軸相当のロータ軸を用いても
良い。
In the bearing manufacturing apparatus according to the present invention, the bearing of the single unit or the bearing unit serving as the bearing to be inspected is a bearing for supporting the rotor shaft of the motor, and is a sliding bearing made of a sintered oil-impregnated bearing or a sintered bearing. A dynamic pressure bearing in which a radial bearing surface having inclined hydrodynamic grooves is formed on the inner diameter surface of a cylindrical porous body made of metal and impregnated with a lubricant may be used. This type of bearing is often used as a spindle motor for driving disks of storage media, and such a bearing can be easily and efficiently inspected by the manufacturing apparatus of the present invention. In the manufacturing apparatus of the present invention, a rotor shaft equivalent to a rotor shaft of an actual machine using a bearing which is a product manufactured by the manufacturing apparatus may be used as the rotor shaft.

【0010】[0010]

【発明の実施の形態】この発明の一実施形態を図1ない
し図3と共に説明する。図3は、軸受の製造装置および
製造方法の全体を示すブロック図である。この軸受の製
造装置は、大別して、主製造工程S1、組立工程S2、
および最終検査の検査工程S3を各々行う主製造装置
A、組立装置B、および検査装置Cで構成される。主製
造工程S1は、所定の素材から最終検査を行うまでの軸
受の単体を製造する工程である。組立工程S2は、その
製造された単体の軸受を軸受ユニットに組み込む工程で
ある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a block diagram showing an entire bearing manufacturing apparatus and manufacturing method. This bearing manufacturing apparatus is roughly divided into a main manufacturing process S1, an assembly process S2,
And a main manufacturing apparatus A, an assembling apparatus B, and an inspecting apparatus C that respectively perform an inspection step S3 of the final inspection. The main manufacturing process S1 is a process of manufacturing a single bearing from a predetermined material to a final inspection. The assembling step S2 is a step of incorporating the manufactured single bearing into a bearing unit.

【0011】図1は、図3の検査装置Cを示す断面図で
ある。検査装置本体1は、被検査軸受20を着脱自在に
嵌合させる座部2を上面に有し、この座部2に嵌合した
被検査軸受20でロータ軸4が支持されるラジアル軸受
未装備のモータ3と、このモータ3のロータ6を介して
ロータ軸4の振れを検出する手段である変位計8とが内
部に設置されている。ロータ軸4は竪方向(鉛直方向)
に設けられており、その下端に対応してスラスト受け7
が検査装置本体1に設けられている。モータ3は、検査
装置本体1に設置されたステータコイル等のステータ5
と、ステータ5の外周に位置するロータ磁石6aを有す
るロータ6とを備え、ロータ6の中心にロータ軸4が貫
通状態に固定されている。ロータ軸4は、この製造方法
ないし製造装置で製造される製品となる軸受を使用する
実機(例えば、コンピュータ周辺機器または音響機器等
のような精密機械におけるCD−ROMやDVD等のデ
ィスク類ドライブ装置)におけるモータのロータ軸相当
のロータ軸である。
FIG. 1 is a sectional view showing the inspection apparatus C of FIG. The inspection apparatus main body 1 has a seat 2 on its upper surface to which the bearing to be inspected 20 is detachably fitted, and is not equipped with a radial bearing in which the rotor shaft 4 is supported by the bearing to be inspected 20 fitted to the seat 2. And a displacement meter 8 which is a means for detecting the run-out of the rotor shaft 4 via the rotor 6 of the motor 3 are installed inside. Rotor shaft 4 is vertical (vertical)
And a thrust receiver 7 corresponding to the lower end thereof.
Are provided in the inspection apparatus main body 1. The motor 3 includes a stator 5 such as a stator coil installed in the inspection apparatus main body 1.
And a rotor 6 having a rotor magnet 6 a located on the outer periphery of the stator 5. The rotor shaft 4 is fixed to the center of the rotor 6 in a penetrating state. The rotor shaft 4 is provided with an actual machine (for example, a disk drive device such as a CD-ROM or a DVD in a precision machine such as a computer peripheral device or an audio device) using a bearing which is a product manufactured by this manufacturing method or manufacturing device. ) Is a rotor shaft corresponding to the rotor shaft of the motor.

【0012】検査装置本体1は、底側部材1aと天板側
部材1bとでケース状に設けられ、天板側部材1bには
底付き円筒状部1cが下面に突出させてある。座部2
は、この底付き円筒状部1cの内面と、底付き円筒状部
1cの開口周縁における天板側部材1bの上面部分とで
形成される。モータ3のステータ5は、底付き円筒状部
1cの外周に設けられている。座部2の底面の中央に
は、ロータ軸4が隙間を介して貫通するガイド孔9が設
けられ、また底側部材1aの上面にはロータ軸4の下端
が遊嵌するガイド凹部10が設けられている。これらガ
イド孔9およびガイド凹部10は、被検査軸受20が設
置されていないときに、ロータ軸4の概略位置および姿
勢を保つ案内手段であり、ロータ軸4に対して比較的大
きな隙間を生じる内径とされている。ガイド凹部10
は、具体的には、底側部材1aの上面にボルト11で固
定された軸端対向部材12に設けられている。
The inspection apparatus body 1 is provided in a case shape with a bottom member 1a and a top plate member 1b, and a bottomed cylindrical portion 1c protrudes from the lower surface of the top plate member 1b. Seat 2
Is formed by the inner surface of the bottomed cylindrical portion 1c and the upper surface portion of the top plate side member 1b at the periphery of the opening of the bottomed cylindrical portion 1c. The stator 5 of the motor 3 is provided on the outer periphery of the bottomed cylindrical portion 1c. A guide hole 9 through which the rotor shaft 4 penetrates through a gap is provided at the center of the bottom surface of the seat 2, and a guide recess 10 into which the lower end of the rotor shaft 4 is loosely provided is provided on the upper surface of the bottom member 1a. Have been. The guide holes 9 and the guide recesses 10 are guide means for maintaining the approximate position and posture of the rotor shaft 4 when the bearing 20 to be inspected is not installed, and have a relatively large inner diameter with respect to the rotor shaft 4. It has been. Guide recess 10
Is provided on a shaft end opposing member 12 fixed to the upper surface of the bottom member 1a with bolts 11.

【0013】スラスト受け7は、ロータ軸4を含むロー
タ6の全体を、検査装置本体1に対して浮上状態に非接
触で支持する手段であり、静圧軸受で構成される。この
静圧軸受からなるスラスト受け7は、軸端対向部材12
に設けられた絞り13から、ロータ6の中央付近と軸端
対向部材12との間で形成される軸受隙間に圧縮空気等
の圧縮気体を供給するものとされている。絞り13は、
給気入口14から圧縮気体の供給手段(図示せず)に配
管等で接続される。変位計8は、ロータ6の外径面の変
位を非接触で検出する手段であり、ロータ6の外径面に
先端が近接して検査装置本体1に取付けられている。ロ
ータ軸4の先端は、被検査軸受20が嵌め込み易いよう
に、先端部4aが先細りのテーパ状に形成されている。
The thrust receiver 7 is a means for supporting the entire rotor 6 including the rotor shaft 4 in a floating state with respect to the inspection apparatus main body 1 in a non-contact manner, and is constituted by a hydrostatic bearing. The thrust receiver 7 composed of this hydrostatic bearing is provided with a shaft end opposing member 12.
The compressed gas, such as compressed air, is supplied from a throttle 13 provided to a bearing gap formed between the vicinity of the center of the rotor 6 and the shaft end facing member 12. The aperture 13 is
The supply port 14 is connected to a supply means (not shown) for compressed gas through piping or the like. The displacement meter 8 is a means for detecting the displacement of the outer diameter surface of the rotor 6 in a non-contact manner, and is attached to the inspection apparatus main body 1 with its tip close to the outer diameter surface of the rotor 6. The tip of the rotor shaft 4 has a tip 4a that is tapered so that the bearing to be inspected 20 can be easily fitted.

【0014】被検査軸受20は、円筒状の滑り軸受21
と、この軸受21を内径面に嵌合状態に取付けた円筒状
の軸受ハウジング22とで、アセンブリ部品である軸受
ユニットに形成されたものである。軸受ハウジング22
は、外径面に軸受使用機器への取付用のフランジ部22
aを有している。被検査軸受20は、軸受ハウジング2
2の外径面で検査装置の座部2に嵌合し、フランジ部2
2aで検査装置本体1の上面に係合する。この嵌合状態
で、被検査軸受20は、座部2の底面に対して浮いた状
態となる。軸受21は、焼結金属からなる円筒状の多孔
質体で形成され、内面にラジアル軸受面21aを有して
いて、潤滑油またはグリースを含浸した焼結含油軸受と
されている。ラジアル軸受面21aは、軸方向に離れた
2か所に設けられている。この軸受21は、これらラジ
アル軸受面21aに、図2のように傾斜状の動圧溝21
bを多数平行に設け、動圧軸受としたものであっても良
い。
The bearing 20 to be inspected is a cylindrical sliding bearing 21.
And a cylindrical bearing housing 22 in which the bearing 21 is mounted on the inner diameter surface in a fitted state, to form a bearing unit as an assembly component. Bearing housing 22
Has a flange portion 22 on the outer diameter surface for mounting to a bearing using device.
a. The bearing 20 to be inspected is the bearing housing 2
2 fits into the seat 2 of the inspection device with the outer diameter surface, and the flange 2
2a engages the upper surface of the inspection apparatus main body 1. In this fitted state, the bearing 20 to be inspected floats with respect to the bottom surface of the seat 2. The bearing 21 is formed of a cylindrical porous body made of a sintered metal, has a radial bearing surface 21a on the inner surface, and is a sintered oil-impregnated bearing impregnated with lubricating oil or grease. The radial bearing surfaces 21a are provided at two places separated in the axial direction. The bearing 21 is provided on the radial bearing surface 21a with an inclined dynamic pressure groove 21 as shown in FIG.
A plurality of b may be provided in parallel to form a dynamic pressure bearing.

【0015】上記構成の検査装置Cを用いた検査方法を
説明する。検査に際しては、被検査軸受20を、ロータ
軸4に通して検査装置本体1の座部2に嵌合させる(図
1に鎖線で示す状態)。この状態で、静圧気体軸受から
なるスラスト受け7を動作させ、モータ3を回転させな
がら、ロータ6の外周面の変位を変位計8で検出する。
この変位検出値から、ロータ軸4の振れが検出される。
この検査装置ないし検査方法によると、被検査軸受20
を検査装置本体1の座部2に嵌合させるだけで、被検査
軸受20の振れが検出でき、従来のようなモータへの組
み込みや変位計のセットの手間が不要となる。そのた
め、簡便に効率良く検査することができる。
An inspection method using the inspection apparatus C having the above configuration will be described. At the time of inspection, the inspection target bearing 20 is passed through the rotor shaft 4 and fitted to the seat 2 of the inspection apparatus main body 1 (a state shown by a chain line in FIG. 1). In this state, the displacement of the outer peripheral surface of the rotor 6 is detected by the displacement gauge 8 while operating the thrust receiver 7 composed of the hydrostatic gas bearing and rotating the motor 3.
The deflection of the rotor shaft 4 is detected from the detected displacement value.
According to the inspection device or the inspection method, the inspection target bearing 20
By simply fitting the bearing into the seat 2 of the inspection apparatus main body 1, the run-out of the bearing 20 to be inspected can be detected, and the trouble of assembling into a motor and setting a displacement meter as in the related art is unnecessary. Therefore, the inspection can be performed easily and efficiently.

【0016】なお、上記実施形態の製造装置および製造
方法では、最終検査の工程で、軸受ユニットからなる被
検査軸受20を検査するものとしたが、軸受21の単体
を被検査軸受とするものでとしても良い。その場合、検
査装置本体1の座部2の形状を、単体の軸受21が嵌合
する形状,大きさのものとすれば良く、他は同じで良
い。
In the manufacturing apparatus and the manufacturing method of the above embodiment, the bearing 20 to be inspected, which is a bearing unit, is inspected in the final inspection step, but the bearing 21 alone is used as the bearing to be inspected. It is good. In that case, the shape of the seat portion 2 of the inspection apparatus main body 1 may be a shape and a size to which the single bearing 21 fits, and the other portions may be the same.

【0017】[0017]

【発明の効果】この発明の軸受の製造方法は、軸受を最
終検査する工程において、被検査軸受を嵌合させる座
部、およびラジアル軸受未装備のモータを備えた検査装
置本体を準備し、上記座部に被検査軸受を嵌合させてモ
ータ回転に伴うロータ軸の振れを検出する方法であるた
め、座部に被検査軸受を嵌合させるだけで、振れの検出
が行え、軸受単体または軸受ユニットの状態の検査を、
簡便に効率良く行うことができる。この発明の軸受の製
造装置は、軸受を最終検査する装置に、被検査軸受を着
脱自在に嵌合させる座部を有する検査装置本体と、上記
座部に嵌合した被検査軸受でロータ軸を支持するラジア
ル軸受未装備のモータと、上記ロータ軸の振れを検出す
る変位検出手段とを備えたものであるため、座部に被検
査軸受を嵌合させるだけで、振れの検出が行え、軸受単
体または軸受ユニットの状態の検査を、簡便に効率良く
行うことができる。
According to the method of manufacturing a bearing of the present invention, in the step of final inspection of a bearing, an inspection apparatus main body provided with a seat for fitting a bearing to be inspected and a motor without a radial bearing is provided. Since this method detects the run-out of the rotor shaft accompanying the rotation of the motor by fitting the bearing to be inspected to the seat, the run-out can be detected simply by fitting the bearing to be inspected to the seat. Inspection of the condition of the unit
It can be performed simply and efficiently. A bearing manufacturing apparatus according to the present invention includes an inspection apparatus main body having a seat for detachably fitting a bearing to be inspected to an apparatus for final inspection of the bearing, and a rotor shaft formed by the bearing to be inspected fitted to the seat. Since it is equipped with a motor without a radial bearing to be supported and a displacement detecting means for detecting run-out of the rotor shaft, run-out can be detected simply by fitting the bearing to be inspected to the seat. Inspection of the state of a single unit or a bearing unit can be performed simply and efficiently.

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

【図1】この発明の一実施形態にかかる軸受の製造装置
における検査装置の断面図である。
FIG. 1 is a cross-sectional view of an inspection device in a bearing manufacturing device according to an embodiment of the present invention.

【図2】被検査軸受の一例を示す断面図である。FIG. 2 is a sectional view showing an example of a bearing to be inspected.

【図3】同軸受の製造装置および製造工程の全体を示す
ブロック図である。
FIG. 3 is a block diagram showing an entire manufacturing apparatus and manufacturing process of the bearing.

【図4】従来の軸受使用機器の概略断面図である。FIG. 4 is a schematic sectional view of a conventional device using a bearing.

【符号の説明】[Explanation of symbols]

1…検査装置本体 2…座部 3…モータ 4…ロータ軸 5…ロータ 6…ステータ 7…スラスト受け 8…変位計 20…被検査軸受 21…軸受 22…軸受ハウジング DESCRIPTION OF SYMBOLS 1 ... Inspection apparatus main body 2 ... Seat part 3 ... Motor 4 ... Rotor shaft 5 ... Rotor 6 ... Stator 7 ... Thrust receiver 8 ... Displacement meter 20 ... Bearing to be inspected 21 ... Bearing 22 ... Bearing housing

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 ラジアル軸受面で軸を支持する軸受の単
体、または前記軸受が組込まれた軸受ユニットである被
検査軸受を最終検査する工程を含む軸受の製造方法であ
って、前記最終検査の工程では、被検査軸受を着脱自在
に嵌合させる座部、およびラジアル軸受未装備のモータ
を備えた検査装置本体を準備し、上記座部に被検査軸受
を嵌合させることにより上記モータのロータ軸を被検査
軸受で支持させた状態で上記モータを回転させ、ロータ
軸の振れを変位検出手段で検出する軸受の製造方法。
1. A method for manufacturing a bearing, comprising a step of final inspection of a bearing alone which supports a shaft on a radial bearing surface, or a bearing to be inspected, which is a bearing unit in which the bearing is incorporated. In the process, a seat for detachably fitting the bearing to be inspected, and an inspection apparatus body including a motor without a radial bearing are prepared, and the rotor for the motor is fitted to the seat by fitting the bearing to be inspected. A method for manufacturing a bearing, wherein the motor is rotated while the shaft is supported by the bearing to be inspected, and the deflection of the rotor shaft is detected by displacement detecting means.
【請求項2】 上記ロータ軸として、この製造方法で製
造される製品となる軸受を使用する実機のロータ軸相当
のロータ軸を用いる請求項1記載の軸受の製造方法。
2. The method for manufacturing a bearing according to claim 1, wherein a rotor shaft equivalent to a rotor shaft of an actual machine using a bearing which is a product manufactured by the manufacturing method is used as the rotor shaft.
【請求項3】 ラジアル軸受面で軸を支持する軸受の単
体、または前記軸受が組込まれた軸受ユニットである被
検査軸受を最終検査する装置を含む軸受の製造装置であ
って、前記最終検査を行う装置は、被検査軸受を着脱自
在に嵌合させる座部を有する検査装置本体と、上記座部
に嵌合した被検査軸受でロータ軸を支持するラジアル軸
受未装備のモータと、上記ロータ軸の振れを検出する変
位検出手段とを備えた軸受の製造装置。
3. A bearing manufacturing apparatus including a device for final inspection of a bearing alone or a bearing unit in which the bearing is supported by a radial bearing surface, or a bearing unit into which the bearing is incorporated, wherein the final inspection is performed. The apparatus to be tested includes an inspection device main body having a seat for detachably fitting the bearing to be inspected, a motor without a radial bearing for supporting the rotor shaft with the bearing to be inspected fitted to the seat, and the rotor shaft An apparatus for manufacturing a bearing, comprising: a displacement detecting means for detecting run-out of a bearing.
【請求項4】 上記検査装置本体に上記モータのステー
タを設置し、上記ロータ軸にロータを固定し、上記ロー
タを軸方向に非接触で支持するスラスト受けを設け、上
記変位検出手段は上記ロータを介してロータ軸の振れを
検出するものとした請求項3記載の軸受の製造装置。
4. A stator for the motor is mounted on the main body of the inspection apparatus, a rotor is fixed to the rotor shaft, and a thrust receiver for supporting the rotor in a non-contact manner in the axial direction is provided. 4. The bearing manufacturing apparatus according to claim 3, wherein the run-out of the rotor shaft is detected via the shaft.
【請求項5】 上記スラスト受けは静圧気体軸受である
請求項4記載の軸受の製造装置。
5. A bearing manufacturing apparatus according to claim 4, wherein said thrust receiver is a hydrostatic gas bearing.
【請求項6】 上記ロータ軸は竪方向に設けられたもの
である請求項3ないし請求項5のいずれかに記載の軸受
の製造装置。
6. The bearing manufacturing apparatus according to claim 3, wherein the rotor shaft is provided in a vertical direction.
【請求項7】 上記被検査軸受となる単体または軸受ユ
ニット中の軸受は、モータのロータ軸支持用の軸受であ
って、円筒状の焼結含油軸受からなる滑り軸受、または
焼結金属からなる円筒状の多孔質体の内径面に傾斜状の
動圧溝を有するラジアル軸受面を形成し、かつ潤滑剤を
含浸させた動圧軸受である請求項3ないし請求項6のい
ずれかに記載の軸受の製造装置。
7. The bearing as the bearing to be inspected, alone or in a bearing unit, is a bearing for supporting a rotor shaft of a motor, and is a sliding bearing made of a cylindrical sintered oil-impregnated bearing or made of a sintered metal. The dynamic pressure bearing according to any one of claims 3 to 6, wherein a radial bearing surface having an inclined dynamic pressure groove is formed on the inner diameter surface of the cylindrical porous body, and the lubricant is impregnated with the lubricant. Bearing manufacturing equipment.
【請求項8】 上記ロータ軸として、この製造装置で製
造される製品となる軸受を使用する実機のロータ軸相当
のロータ軸を用いた請求項3ないし請求項7のいずれか
に記載の軸受の製造装置。
8. The bearing according to claim 3, wherein a rotor shaft equivalent to a rotor shaft of an actual machine using a bearing which is a product manufactured by the manufacturing apparatus is used as the rotor shaft. manufacturing device.
JP11011382A 1999-01-20 1999-01-20 Method and device for manufacturing bearing Pending JP2000205857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11011382A JP2000205857A (en) 1999-01-20 1999-01-20 Method and device for manufacturing bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11011382A JP2000205857A (en) 1999-01-20 1999-01-20 Method and device for manufacturing bearing

Publications (1)

Publication Number Publication Date
JP2000205857A true JP2000205857A (en) 2000-07-28

Family

ID=11776471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11011382A Pending JP2000205857A (en) 1999-01-20 1999-01-20 Method and device for manufacturing bearing

Country Status (1)

Country Link
JP (1) JP2000205857A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7908737B2 (en) 2007-04-26 2011-03-22 Nidec Corporation Production method of fluid dynamic-pressure bearing in spindle motor
JP2013015410A (en) * 2011-07-04 2013-01-24 Nsk Ltd Attitude state evaluation apparatus and attitude state evaluation method
CN106885546A (en) * 2017-01-26 2017-06-23 安徽皖新电机有限公司 A kind of rotor axial direction glitch detection clamping device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7908737B2 (en) 2007-04-26 2011-03-22 Nidec Corporation Production method of fluid dynamic-pressure bearing in spindle motor
JP2013015410A (en) * 2011-07-04 2013-01-24 Nsk Ltd Attitude state evaluation apparatus and attitude state evaluation method
CN106885546A (en) * 2017-01-26 2017-06-23 安徽皖新电机有限公司 A kind of rotor axial direction glitch detection clamping device

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