JPH076871B2 - Radial load device for vibration and acoustic measurement of rolling bearings - Google Patents
Radial load device for vibration and acoustic measurement of rolling bearingsInfo
- Publication number
- JPH076871B2 JPH076871B2 JP5004039A JP403993A JPH076871B2 JP H076871 B2 JPH076871 B2 JP H076871B2 JP 5004039 A JP5004039 A JP 5004039A JP 403993 A JP403993 A JP 403993A JP H076871 B2 JPH076871 B2 JP H076871B2
- Authority
- JP
- Japan
- Prior art keywords
- radial load
- vibration
- lever
- load device
- acoustic measurement
- 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 - Lifetime
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は転がり軸受の内輪回転時
に生じる振動・音響の測定において、転がり軸受にラジ
アル荷重を加える装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for applying a radial load to a rolling bearing in measuring vibration and sound generated when the inner ring of the rolling bearing rotates.
【0002】[0002]
【従来の技術及び発明が解決しようとする課題】転がり
軸受の振動・音響測定は転がり軸受の研究、理論解析の
基礎資料を得る手段として重要であり、なかんずく本測
定におけるラジアル荷重のかかり具合は直接測定精度を
左右するので、測定中ラジアル荷重の付加状態の監視、
変動のチェックに研究者は多くの労力を費やしていた。2. Description of the Related Art Vibration and acoustic measurement of rolling bearings is important as a means to obtain basic data for research and theoretical analysis of rolling bearings. Above all, the degree of radial load applied in this measurement is direct. Since it affects the measurement accuracy, it can monitor the radial load applied during measurement.
Researchers have put a lot of effort into checking fluctuations.
【0003】転がり軸受の振動・音響測定用ラジアル荷
重装置に関し、従来はベルトおよびばねを用い、図2に
示す如く被測定転がり軸受1の外輪1bの外径円周方向
にベルト3をかけ、ベルト3の一ヶ所に取り付けられた
ばね4に所定の伸びを与えてラジアル方向のばね力すな
わちラジアル荷重を発生させ、転がり軸受1にラジアル
荷重Fを負荷する方法がとられていた。しかしながら、
このようにベルト3によって転がり軸受1の外輪1bに
ラジアル荷重Fを伝達する方法では、ベルト3の張力
が転がり軸受1の固有振動数に大きく影響を及ぼし、
ベルト3による外輪1bの拘束が不安定なため、振動・
音響の測定値が経過時間に対して激しく変化することに
よって、実際上振動・音響の正確な測定ができなくなる
等の問題点があった。この発明の目的はこれら従来の問
題を解決して、荷重装置の剛性が転がり軸受の固有振動
数に影響を及ぼさないようにすると共に荷重装置が振動
・音響測定値の時間的変動を誘起しないようにしようと
するものである。A radial load device for vibration / acoustic measurement of a rolling bearing has conventionally used a belt and a spring, and a belt 3 is applied to the outer ring 1b of the rolling bearing 1 to be measured as shown in FIG. A method has been adopted in which the spring 4 attached to one place of 3 is given a predetermined extension to generate a spring force in the radial direction, that is, a radial load, and the radial load F is applied to the rolling bearing 1. However,
As described above, in the method of transmitting the radial load F to the outer ring 1b of the rolling bearing 1 by the belt 3, the tension of the belt 3 greatly affects the natural frequency of the rolling bearing 1,
Since the restraint of the outer ring 1b by the belt 3 is unstable, vibration /
There is a problem that the measured value of the sound changes drastically with the passage of time, which makes it impossible to measure the vibration and sound accurately. An object of the present invention is to solve these conventional problems so that the rigidity of the load device does not affect the natural frequency of the rolling bearing, and the load device does not induce temporal fluctuations of vibration / acoustic measurement values. Is what you are trying to do.
【0004】[0004]
【課題を解決するための手段】回転軸に取り付けられた
転がり軸受の内輪回転時の振動・音響を測定する際に、
前記軸受にラジアル荷重を加えるための、転がり軸受の
振動・音響測定用ラジアル荷重装置において、この発明
では、てこ(梃子)と、そのてこの腕の一端に取り付け
られたおもりと、前記てこの腕の他端に取り付けられ、
先端が前記軸受の外輪を垂直に押圧して、前記ラジアル
荷重を加える低剛性、弾性の突起とにより前記荷重装置
を構成するものである。[Means for Solving the Problems] When measuring the vibration and sound of an inner ring of a rolling bearing mounted on a rotating shaft,
In a radial load device for vibration / acoustic measurement of a rolling bearing for applying a radial load to the bearing, according to the present invention, a lever (lever), a weight attached to one end of the lever arm, and the lever arm are provided. Attached to the other end of
The tip is configured to vertically press the outer ring of the bearing to form the loading device with a low-rigidity and elastic protrusion that applies the radial load.
【0005】[0005]
【実施例】図1に示す実施例に基づいて本発明の詳細を
説明する。図1では図2と対応する部分に同じ符号を付
してある。図1において1は振動または音響測定される
転がり軸受、1aはその内輪、1bは外輪、1cはボー
ル、6はおもり、7はてこ(梃子)、7aはおもり6に
よって生ずる力を伝達するためのてこの腕、7bはてこ
の支点、8はおもり6のてこの腕7aに接続するための
接続棒である。9は低剛性の弾性物質(例えばゴム)の
指(突起とも言う)である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on the embodiment shown in FIG. In FIG. 1, parts corresponding to those in FIG. 2 are designated by the same reference numerals. In FIG. 1, 1 is a rolling bearing for vibration or acoustic measurement, 1a is its inner ring, 1b is an outer ring, 1c is a ball, 6 is a weight, 7 is a lever, and 7a is for transmitting the force generated by the weight 6. The lever arm, 7b is a lever fulcrum, and 8 is a connecting rod for connecting to the lever arm 7a of the weight 6. Reference numeral 9 is a finger (also referred to as a protrusion) made of an elastic material (for example, rubber) having low rigidity.
【0006】今、てこの腕7aにおける接続棒8の取付
点とてこの支点7b間の距離およびてこの腕7aにおけ
る指9の取付点とてこの支点7b間の距離でてこの原理
が成立し、おもり6によって生ずる図面上“下向きの
力”はてこの原理によって指9の位置に図面上“上向き
の力”となって現れる。実施例では前記両取付点と支点
7bとの距離は1:1としている。Now, the lever principle is established by the distance between the attachment point of the connecting rod 8 and the lever fulcrum 7b on the lever arm 7a and the distance between the attachment point of the finger 9 on the lever 7a and the lever fulcrum 7b. The "downward force" in the drawing caused by the weight 6 appears as "upward force" in the drawing at the position of the finger 9 according to the principle of leverage. In the embodiment, the distance between the both attachment points and the fulcrum 7b is 1: 1.
【0007】複数本の指9はてこの支点7bからいずれ
も等距離すなわち図面上紙面と垂直な方向に配列されて
おり、その上端は外輪1bを鉛直方向に押圧するように
配置してある。かくしておもりとてこの原理によって生
じた力は1乃至数本の指9を介して被測定転がり軸受1
の外輪1bにラジアル荷重として加えられる。ここで、
指9のもつ低剛性は被測定転がり軸受1単体のラジアル
剛性の10%以下の値が適当である。All of the plurality of fingers 9 are arranged equidistantly from the fulcrum 7b of the lever, that is, in a direction perpendicular to the plane of the drawing, and their upper ends are arranged so as to press the outer ring 1b in the vertical direction. Thus, the force generated by the principle of leverage and the lever is applied to the rolling bearing 1 to be measured through one to several fingers 9.
Is applied to the outer ring 1b as a radial load. here,
The low rigidity of the finger 9 is appropriately 10% or less of the radial rigidity of the rolling bearing 1 to be measured alone.
【0008】また、てこの支点7bについて、実際には
Y−Zメカニカルスタンドを付加し、支点7bの上下移
動を可能にし、てこの腕7aの水平調整により、おもり
6に対するラジアル荷重の微調整を容易に行えるように
してある。なお、回転軸2と内輪1aを例えばナット1
0等により固着することによって被測定軸受1の軸方向
の滑り移動をおさえ回転を安定させることができ、振動
・音響の測定値の時間変化がいっそう軽減される。In addition, a YZ mechanical stand is actually added to the lever 7b so that the lever 7b can be moved up and down, and the lever 7a is horizontally adjusted to finely adjust the radial load on the weight 6. It's easy to do. In addition, the rotating shaft 2 and the inner ring 1a are connected to, for example, the nut 1
By sticking with 0 or the like, it is possible to suppress the sliding movement of the measured bearing 1 in the axial direction and stabilize the rotation, and further reduce the time change of the measured values of vibration and sound.
【0009】[0009]
【発明の効果】以上述べたように、本発明の装置によれ
ば 剛性の小さいゴム等の指9を用いているため、荷重
装置の剛性が転がり軸受の固有振動数にほとんど影響を
及ぼさない。 てこにより荷重を与えているため、外輪1bに対す
る拘束が安定し、荷重装置に起因した振動・音響の測定
値の時間変化がほとんどない。As described above, according to the device of the present invention, since the finger 9 made of rubber or the like having low rigidity is used, the rigidity of the load device hardly affects the natural frequency of the rolling bearing. Since the load is applied by the lever, the restraint on the outer ring 1b is stable, and there is almost no temporal change in the measured values of vibration and sound due to the load device.
【0010】以上のことから、振動・音響の測定精度を
従来より大幅に向上できる。また更に、被測定軸受に対
する荷重装置のセッティングに熟練を要しない等の効果
もある。From the above , the vibration / acoustic measurement accuracy can be greatly improved as compared with the prior art. Furthermore, there is an effect that no skill is required for setting the load device for the bearing to be measured.
【図1】この発明の実施例を示す原理図で、Aは正面
図、BはAのC−C′断面図。FIG. 1 is a principle view showing an embodiment of the present invention, in which A is a front view and B is a sectional view taken along the line CC ′ of A.
【図2】従来の転がり軸受の振動・音響測定用ラジアル
荷重装置の原理的な構成図。FIG. 2 is a principle configuration diagram of a conventional radial load device for vibration / acoustic measurement of a rolling bearing.
Claims (1)
輪回転時の振動・音響を測定する際に、前記軸受にラジ
アル荷重を加えるための、転がり軸受の振動・音響測定
用ラジアル荷重装置において、 てこ(梃子)と、 そのてこの腕の一端に取り付けられたおもりと、 前記てこの腕の他端に取り付けられ、先端が前記軸受の
外輪を垂直に押圧して、前記ラジアル荷重を加える低剛
性、弾性の突起とを具備することを特徴とする、 転がり軸受の振動・音響測定用ラジアル荷重装置。1. A radial load device for measuring vibration and sound of a rolling bearing for applying a radial load to the bearing when measuring vibration and sound when an inner ring of a rolling bearing mounted on a rotating shaft rotates. A lever (lever), a weight attached to one end of the lever arm, and a lower rigidity attached to the other end of the lever arm, the tip of which vertically presses the outer ring of the bearing to apply the radial load. A radial load device for vibration / acoustic measurement of rolling bearings, characterized by comprising elastic protrusions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5004039A JPH076871B2 (en) | 1993-01-13 | 1993-01-13 | Radial load device for vibration and acoustic measurement of rolling bearings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5004039A JPH076871B2 (en) | 1993-01-13 | 1993-01-13 | Radial load device for vibration and acoustic measurement of rolling bearings |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06213771A JPH06213771A (en) | 1994-08-05 |
JPH076871B2 true JPH076871B2 (en) | 1995-01-30 |
Family
ID=11573818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5004039A Expired - Lifetime JPH076871B2 (en) | 1993-01-13 | 1993-01-13 | Radial load device for vibration and acoustic measurement of rolling bearings |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH076871B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3373718B2 (en) * | 1996-03-21 | 2003-02-04 | 松下電工株式会社 | Bearing damage detection method |
JP5301303B2 (en) * | 2009-02-02 | 2013-09-25 | Ntn株式会社 | Inspection method and inspection apparatus |
JP5567089B2 (en) * | 2012-09-24 | 2014-08-06 | 東芝エレベータ株式会社 | Boarding board detector for passenger conveyor |
CN103308311A (en) * | 2013-06-20 | 2013-09-18 | 常熟长城轴承有限公司 | Roller bearing vibration measuring device |
CN108303256A (en) * | 2018-01-31 | 2018-07-20 | 西安工业大学 | Three-point mount formula circumference radial loaded and test device |
-
1993
- 1993-01-13 JP JP5004039A patent/JPH076871B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH06213771A (en) | 1994-08-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108692925B (en) | Elastic ring rigidity measuring device and method | |
EP0223736B1 (en) | Measuring appliance for altitude distances | |
JP2002082014A (en) | Device and method of accurately measuring non- stationary aerodynamic | |
JPH076871B2 (en) | Radial load device for vibration and acoustic measurement of rolling bearings | |
JPH04164231A (en) | Device for testing fatigue of blade | |
JPH025369Y2 (en) | ||
JPH10260123A (en) | Device for testing physical property of elastic body | |
US2625152A (en) | Vibrator with amplitude measuring circuit | |
CN108020389A (en) | Fishing lines reel hand-transmitted vibration test device and its test method | |
US4881552A (en) | Tooth stability monitor | |
JPH0814874A (en) | Measuring device | |
JPS59214721A (en) | Vibration detecting set of portable vibrometer | |
CN113074680B (en) | Device and method for measuring axial maximum play amount of rotor | |
JPS5920661Y2 (en) | Load measuring device for nail pulling test machine | |
GB1382036A (en) | Means for measuring the unbalance of vehicle wheels | |
JPS6352037A (en) | Friction measuring method for magnetic disk | |
SU134815A1 (en) | Device for measuring intraocular pressure | |
JPH0329734Y2 (en) | ||
SU735960A1 (en) | Device for measuring dynamic elasticity modulus of material specimen | |
JPS6411891B2 (en) | ||
TWI650539B (en) | Twisting force measuring system and body trainer having the same | |
JPH0590345U (en) | Material testing machine | |
SU823903A1 (en) | Device for checking expansion springs | |
JPS60859Y2 (en) | Sewing machine needle hook clearance measuring device | |
JPS5825284Y2 (en) | Naisokukuteiki |