JPH0321860B2 - - Google Patents
Info
- Publication number
- JPH0321860B2 JPH0321860B2 JP28016684A JP28016684A JPH0321860B2 JP H0321860 B2 JPH0321860 B2 JP H0321860B2 JP 28016684 A JP28016684 A JP 28016684A JP 28016684 A JP28016684 A JP 28016684A JP H0321860 B2 JPH0321860 B2 JP H0321860B2
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- thin wire
- fixed
- friction torque
- torque
- 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.)
- Expired
Links
- 238000012360 testing method Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、転がり軸受の摩擦トルク試験機に
関し、詳しくは、0.1rpm程度の極低速で回転駆
動、特に揺動するときの摩擦トルク試験機に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a friction torque tester for rolling bearings, and more specifically, a friction torque tester for rotating bearings at extremely low speeds of about 0.1 rpm, especially when swinging. It is related to.
転がり軸受の用途として、例えばコンピユータ
機器のアクチユエータスイングアーム等において
比較的小さい角度（6゜〜18゜）で極低速（0.1rpm
以下）で揺動させる場合があるが、極低速で揺動
させるために、通常回転の場合には見られないト
ルクむらを生じることがある。
Rolling bearings are used for applications such as actuator swing arms of computer equipment, etc. at extremely low speeds (0.1 rpm) at relatively small angles (6° to 18°).
(below), but because it is oscillated at an extremely low speed, torque unevenness that is not seen during normal rotation may occur.
このような現象を把握するため、極低速におけ
る揺動トルクの試験を行なう必要があるが、従来
知られている摩擦トルク試験機は、殆んどが
1rpm又はそれ以上の速度において試験するもの
であつて、前記のごとき試験条件を満足すること
ができない。 In order to understand this phenomenon, it is necessary to test the oscillating torque at extremely low speeds, but most conventional friction torque testing machines
The test is performed at a speed of 1 rpm or higher, and the above test conditions cannot be met.
そこで、この発明は極低速における揺動トルク
を試験できる転がり軸受のトルク試験機を提供す
ることを目的とする。 Therefore, an object of the present invention is to provide a torque testing machine for rolling bearings that can test rocking torque at extremely low speeds.
この発明は、往復移動台に試験用転がり軸受を
その軸芯が移動方向に対し直角に向くよう、かつ
内外軸受輪のいずれか一方を固定して取付け、外
輪を固定する場合は内輪と一体の回転軸に、また
内輪を固定する場合は外輪に直接又は外輪と一体
の巻付け部材に、それぞれ細線を巻付けて接線方
向に一定張力で引張り、上記細線の張力測定器を
試験機基台上に設けた構成としたものである。
In this invention, a rolling bearing for testing is mounted on a reciprocating table so that its axis is oriented perpendicular to the direction of movement, and one of the inner and outer bearing rings is fixed, and when the outer ring is fixed, it is mounted integrally with the inner ring. When fixing the inner ring, wrap a thin wire around the rotating shaft, or directly around the outer ring or on a wrapping member that is integrated with the outer ring, and pull it with a constant tension in the tangential direction. The configuration is as follows.
上記の往復移動台を微速度で移動させると、細
線の張力が増大し、移動方向の力とのバランス点
を越えると細線を巻付けた軸受輪又はこれと一体
の部材が回転する。このとき正回転の摩擦トルク
が測定記録される。また、移動台が一定ストロー
クを移動したのち移動方向を変えると、軸受輪の
回転方向が反転し、このとき逆回転の摩擦トルク
が測定記録される。
When the above-mentioned reciprocating table is moved at a very slow speed, the tension of the thin wire increases, and when the balance point with the force in the moving direction is exceeded, the bearing ring around which the thin wire is wound or a member integrated therewith rotates. At this time, the friction torque of forward rotation is measured and recorded. Furthermore, when the moving table changes its direction of movement after moving a certain stroke, the direction of rotation of the bearing ring is reversed, and at this time, the friction torque of the reverse rotation is measured and recorded.
図面に示す実施例のトルク試験機は、基台１上
に２本のガイドレール２を設け両方のガイドレー
ル２間にボール送りねじ３を設置し、その送りね
じ３をガイドレール２の両端部において軸受４に
よつて支持するとともに、その一端に１〜
100rpmの範囲で速度が変えられる低速可変モー
タ５を取付けている。
The torque tester of the embodiment shown in the drawings has two guide rails 2 on a base 1, a ball feed screw 3 between both guide rails 2, and a ball feed screw 3 that is connected to both ends of the guide rail 2. is supported by a bearing 4 at one end thereof, and a
A low-speed variable motor 5 whose speed can be changed within a range of 100 rpm is installed.
上記のガイドレール２上には移動台６がスライ
ド自在に搭載され、また移動台６の下面に上記の
送りねじ３をねじ結合した状態で貫通せしめ、モ
ータ５によつて移動台６が往復移動できるように
なつている。 A movable base 6 is slidably mounted on the guide rail 2, and the feed screw 3 is threaded through the lower surface of the movable base 6, and the movable base 6 is reciprocated by the motor 5. I'm starting to be able to do it.
また、一方のガイドレール２に移動台６の前後
にリミツトスイツチ７を位置調整自在に取付け、
移動台６のストロークをこれにより設定してい
る。 In addition, a limit switch 7 is attached to one of the guide rails 2 at the front and back of the moving platform 6 so that the position can be adjusted freely.
The stroke of the moving table 6 is thereby set.
上記移動台６上にコの字形の支持台８を設置
し、その支持台８の上下に対向した部分にそれぞ
れ試験用転がり軸受９を取付けている。これらの
軸受９は、第４図に示すように、内輪１０に回転
軸１１を挿入固定し、外輪１２を支持台８に嵌合
固定している。上記の回転軸１１の軸芯は移動台
６の移動方向に対して直角であり、その軸まわり
にプーリ１３を挿入固定している。 A U-shaped support stand 8 is installed on the movable stand 6, and test rolling bearings 9 are attached to upper and lower opposed parts of the support stand 8, respectively. In these bearings 9, as shown in FIG. 4, a rotating shaft 11 is inserted and fixed into an inner ring 10, and an outer ring 12 is fitted and fixed into a support base 8. The axis of the rotating shaft 11 is perpendicular to the moving direction of the moving table 6, and a pulley 13 is inserted and fixed around the axis.
上記のプーリ１３はら旋状のガイド溝１４を有
し、そのガイド溝１４に木綿糸、テグス等の細線
１５を巻付けるとともに、その両端をプーリ１３
の接線方向に引出し、その一端をコイルばね１６
を介して基台１の一部に連結し、他端を基台１上
に設置した張力測定器１７に連結している。 The above-mentioned pulley 13 has a spiral guide groove 14, and a thin wire 15 such as cotton thread or thread is wound around the guide groove 14, and both ends of the wire are wrapped around the pulley 13.
, and one end of the coil spring 16 is pulled out in the tangential direction.
The other end is connected to a tension measuring device 17 installed on the base 1.
この張力測定器１７としては、図示のように変
位測定器１８と板ばね１９との組合せからなるも
ののほか、ワイヤ式ストレインゲージ、板ばねと
ストレインゲージの組合せ等がある。 The tension measuring device 17 includes a combination of a displacement measuring device 18 and a leaf spring 19 as shown in the figure, a wire type strain gauge, a combination of a leaf spring and a strain gauge, and the like.
上記のコイルばね１６は、細線１５に一定の張
力を付与し、また、張力測定器１７は板ばね１９
のたわみ量を変位測定器１８を作動せしめ、これ
によつて細線１５の張力を測定する。 The coil spring 16 described above applies a constant tension to the thin wire 15, and the tension measuring device 17 applies a constant tension to the thin wire 15.
The displacement measuring device 18 is operated to measure the amount of deflection of the thin wire 15, thereby measuring the tension of the thin wire 15.
実施例の試験機は、以上のごとき構成であり、
次にその作用について説明する。 The testing machine of the example has the above configuration,
Next, its effect will be explained.
モータ５を所定の低速回転で駆動し、送りねじ
３の回転によつて移動台６をコイルばね１６予め
コイルばね１６を介して張力測定器１７は十分な
張力Ｔを付与した状態でモータ５を所定の回転数
で駆動し、送りねじ３の回転によつて移動台６を
コイルばね１６の方向に移動させる。このとき試
験用転がり軸受９の摩擦トルクに応じた力（△
T1）だけ測定器１７に作用する力が増大する。 The motor 5 is driven at a predetermined low speed rotation, and the tension measuring device 17 applies sufficient tension T to the movable table 6 by the rotation of the feed screw 3 via the coil spring 16. It is driven at a predetermined rotational speed, and the rotation of the feed screw 3 moves the moving table 6 in the direction of the coil spring 16. At this time, a force (△
The force acting on the measuring device 17 increases by T 1 ).
移動台６が一方のリミツトスイツチ７に当たる
とモータ５が逆転し、移動台６は今度は測定器１
７の方向に移動する。このとき軸受９は逆転し、
その摩擦トルクに応じた力（△T2）だけ測定器
１７に作用する力が減少する。 When the moving table 6 hits one of the limit switches 7, the motor 5 reverses, and the moving table 6 now moves to the measuring instrument 1.
Move in direction 7. At this time, the bearing 9 is reversed,
The force acting on the measuring device 17 is reduced by a force (ΔT 2 ) corresponding to the friction torque.
正転時と逆転時における測定器１７に作用する
細線１５の張力は、第５図のように記録され、軸
受９の摩擦トルクτは、プーリ１３の半径をＲと
すると
τ＝１／２（△T1＋△T2）Ｒ
として求められる。 The tension of the thin wire 15 acting on the measuring device 17 during forward rotation and reverse rotation is recorded as shown in FIG. It is obtained as △T 1 +△T 2 )R.
なお、△T1と△T2は、初期の細線１５の張力
Ｔが軸受９のトルクを一部包含するため、すなわ
ちトルクの正確なゼロ点ではないため、必ずしも
等しくない。 Note that ΔT 1 and ΔT 2 are not necessarily equal because the initial tension T of the thin wire 15 partially includes the torque of the bearing 9, that is, it is not the exact zero point of the torque.
このように、移動台６を一定の速度とストロー
クで移動させることにより、正転、逆転時の摩擦
トルクすなわち揺動トルクが測定記録される。 In this manner, by moving the movable table 6 at a constant speed and stroke, the friction torque, that is, the swing torque during forward and reverse rotations is measured and recorded.
上記実施例の装置について、具体的数値の一例
を次に示す。 An example of specific numerical values for the apparatus of the above embodiment is shown below.
試験用軸受９の回転速度 0.1rpm
試験用軸受９の揺動角 18゜
減 速 比 1/150
上記の実施例は、プーリ１３を介在することに
より、所要の減速比を得ているが、モータ５、送
りねじ３等によつて十分な減速比が得られる場合
は、プーリ１３を省略し、細線１５を内輪１０と
一体の部材、すなわち回転軸１１に直接細線１５
を巻付けてもよい。 Rotational speed of the test bearing 9: 0.1rpm Swing angle of the test bearing 9: 18° Reduction ratio: 1/150 In the above embodiment, the required reduction ratio is obtained by interposing the pulley 13, but the motor 5. If a sufficient reduction ratio can be obtained by the feed screw 3 etc., the pulley 13 is omitted and the thin wire 15 is directly attached to a member integrated with the inner ring 10, that is, the rotating shaft 11.
You can also wrap it around.
また、外輪１２の摩擦トルクを試験する場合
は、外輪１２に直接或いは外輪１２に嵌合したプ
ーリ等の巻付け部材のまわりに細線１５を巻付
け、内輪１０を支持台８に固定する。この場合も
同様にして外輪１２の揺動トルクを試験すること
ができる。 Further, when testing the friction torque of the outer ring 12, the inner ring 10 is fixed to the support base 8 by wrapping a thin wire 15 around the outer ring 12 directly or around a wrapping member such as a pulley fitted to the outer ring 12. In this case as well, the swinging torque of the outer ring 12 can be tested in the same manner.
この発明のトルク試験機は以上のごときもので
あるから、転がり軸受の揺動トルクを極低速にお
いて試験することができる。
Since the torque testing machine of the present invention is as described above, it is possible to test the rocking torque of a rolling bearing at an extremely low speed.
なお、実施例のように、ボールねじ送り機構に
よる高精度な移動台を利用することにより、極低
速における揺動試験を高精度に行うことができ
る。 Note that, as in the embodiment, by using a highly accurate moving table using a ball screw feeding mechanism, a rocking test at extremely low speed can be performed with high accuracy.
第１図は実施例の縦断正面図、第２図は同上の
平面図、第３図は−線の断面図、第４図は同
上の一部拡大平面図、第５図は摩擦トルクの測定
記録結果のグラフである。
１……基台、２……ガイドレール、３……送り
ねじ、５……モータ、６……移動台、７……リミ
ツトスイツチ、８……支持台、９……試験用転が
り軸受、１０……内輪、１１……回転軸、１２…
…外輪、１３……プーリ、１５……細線、１６…
…コイルばね、１７……張力測定器、１８……板
ばね。
Fig. 1 is a longitudinal sectional front view of the embodiment, Fig. 2 is a plan view of the same as above, Fig. 3 is a sectional view taken along the - line, Fig. 4 is a partially enlarged plan view of the same as above, Fig. 5 is measurement of friction torque. This is a graph of the recording results. DESCRIPTION OF SYMBOLS 1...Base, 2...Guide rail, 3...Feed screw, 5...Motor, 6...Moving table, 7...Limit switch, 8...Support stand, 9...Test rolling bearing, 10... ...Inner ring, 11...Rotating shaft, 12...
...Outer ring, 13...Pulley, 15...Thin wire, 16...
... Coil spring, 17 ... Tension measuring device, 18 ... Leaf spring.
Claims (1)
移動方向に対し直角に向くよう、かつ内外軸受輪
のいずれか一方を固定して取付け、外輪を固定す
る場合は内輪と一体の回転軸に、また内輪を固定
する場合は外輪に直接又は外輪と一体の巻付け部
材に、それぞれ細線を巻付けて接線方向に一定張
力で引張り、上記細線の張力測定器を試験機基台
上に設けてなる転がり軸受の摩擦トルク試験機。 ２ 往復移動台を基台に設けた送りねじにより移
動できるようにした特許請求の範囲第１項に記載
の転がり軸受の摩擦トルク試験機。[Scope of Claims] 1. Mount the test rolling bearing on a reciprocating table so that its axis is oriented perpendicular to the direction of movement, and with one of the inner and outer bearing rings fixed. If the outer ring is fixed, the inner ring should be fixed. When fixing the inner ring, wrap a thin wire around the rotating shaft that is integrated with the outer ring, or directly around the outer ring or on a wrapping member that is integrated with the outer ring, and pull it with a constant tension in the tangential direction. Friction torque testing machine for rolling bearings installed on a base. 2. A friction torque tester for rolling bearings according to claim 1, wherein the reciprocating table is movable by a feed screw provided on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28016684A JPS61151440A (en) | 1984-12-25 | 1984-12-25 | Friction torque testing machine of rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28016684A JPS61151440A (en) | 1984-12-25 | 1984-12-25 | Friction torque testing machine of rolling bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61151440A JPS61151440A (en) | 1986-07-10 |
| JPH0321860B2 true JPH0321860B2 (en) | 1991-03-25 |
Family
ID=17621224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28016684A Granted JPS61151440A (en) | 1984-12-25 | 1984-12-25 | Friction torque testing machine of rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61151440A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9689776B2 (en) | 2014-11-06 | 2017-06-27 | Southwest Research Institute | Apparatus for generating and applying linear forces |
| CN105928706B (en) * | 2016-04-22 | 2018-05-01 | 中国地质大学（武汉） | Rolling bearing fault diagnosis analogue experiment installation at a kind of highwall-drilling machine crossbeam |
| CN110501162B (en) * | 2019-09-02 | 2021-01-22 | 南昌航空大学 | A longitudinal and radial sloshing detection device for aero-engine rotor rolling bearings |
-
1984
- 1984-12-25 JP JP28016684A patent/JPS61151440A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61151440A (en) | 1986-07-10 |
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