JPH07120334A - Apparatus for measuring thrust load at rotary supporting part - Google Patents
Apparatus for measuring thrust load at rotary supporting partInfo
- Publication number
- JPH07120334A JPH07120334A JP5263670A JP26367093A JPH07120334A JP H07120334 A JPH07120334 A JP H07120334A JP 5263670 A JP5263670 A JP 5263670A JP 26367093 A JP26367093 A JP 26367093A JP H07120334 A JPH07120334 A JP H07120334A
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- thrust load
- ring
- inner ring
- raceway
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明に係る回転支持部分のス
ラスト荷重測定装置は、例えば工作機械の使用時に主軸
に加わるスラスト荷重を測定する為、この主軸の回転支
持部分に組み込んだ状態で使用する。BACKGROUND OF THE INVENTION The thrust load measuring device for a rotary support portion according to the present invention is used in a state in which it is incorporated in the rotary support portion of the main spindle in order to measure the thrust load applied to the main spindle when a machine tool is used. .
【０００２】[0002]
【従来の技術】各種工作機械には高速で回転する主軸が
組み込まれている。工作機械の使用時には、この主軸の
先端部に固定した工具によって、被加工物に切削等の加
工を施す。この際、上記主軸にはスラスト荷重が加わる
場合が多い。この荷重が過大になると、上記工具を傷め
るだけでなく、主軸を支持する転がり軸受の寿命を著し
く縮める原因となる。従って、工具並びに工作機械の耐
久性を確保する為には、上記主軸に加わるスラスト荷重
を測定し、このスラスト荷重が所定値を越える様な場合
には、上記工具或は被加工物の送り速度を遅くすると言
った考慮が必要になる。2. Description of the Related Art Various machine tools incorporate a spindle that rotates at high speed. When the machine tool is used, a work fixed to the tip of the main spindle is used to perform processing such as cutting on the workpiece. At this time, a thrust load is often applied to the main shaft. If this load becomes excessive, not only will the tool be damaged, but it will also cause the life of the rolling bearing that supports the main shaft to be significantly shortened. Therefore, in order to ensure the durability of the tool and the machine tool, the thrust load applied to the spindle is measured, and if the thrust load exceeds a predetermined value, the feed speed of the tool or the work piece is measured. You need to take into account the fact that you will slow down.
【０００３】この様な目的で回転支持部に加わるスラス
ト荷重を測定する為の転がり軸受として従来から、例え
ば実開平２−１２４３２１〜３号公報に記載されたもの
が知られている。図５〜７は、この内の実開平２−１２
４３２１号公報に記載されたセンサ付転がり軸受を示し
ている。As a rolling bearing for measuring the thrust load applied to the rotary support portion for such a purpose, one described in, for example, Japanese Utility Model Laid-Open No. 2-124321-3 is conventionally known. Figures 5 to 7 show the actual flat 2-12 of this.
The rolling bearing with a sensor described in Japanese Patent No. 4321 is shown.
【０００４】内輪１の外周面に形成した内輪軌道２と、
外輪３の内周面に形成した外輪軌道４との間には複数の
転動体５、５を転動自在に設けて、上記内輪１と外輪３
との相対回転を自在としている。使用時には上記外輪３
を、軸受固定部材である図示しないハウジングに内嵌固
定すると共に、上記内輪１に、回転部材である回転軸６
の中間部を内嵌固定する。この結果、上記ハウジングの
内側に回転軸６が、回転自在に支持される。An inner ring raceway 2 formed on the outer peripheral surface of the inner ring 1,
A plurality of rolling elements 5, 5 are rotatably provided between the outer ring 3 and the outer ring raceway 4 formed on the inner peripheral surface of the outer ring 3, and the inner ring 1 and the outer ring 3 are
It is freely rotatable relative to. The outer ring 3 when used
Is fitted in and fixed to a housing (not shown) which is a bearing fixing member, and the inner ring 1 is provided with a rotating shaft 6 which is a rotating member.
The middle part of is fixed internally. As a result, the rotary shaft 6 is rotatably supported inside the housing.
【０００５】上記外輪３の端部外周面には、この外輪３
の一部を平削する事により、平坦面７を形成している。
そして、この平坦面７に、歪みゲージ８を添着してい
る。９はこの歪みゲージ８の検出信号を取り出す為の引
出線、１０はこの引出線９と図示しない導線とを接続す
る為のコンセントである。On the outer peripheral surface of the end portion of the outer ring 3, the outer ring 3
The flat surface 7 is formed by planing a part of the.
A strain gauge 8 is attached to this flat surface 7. Reference numeral 9 is a lead wire for taking out the detection signal of the strain gauge 8, and 10 is an outlet for connecting the lead wire 9 and a conductor wire (not shown).
【０００６】上記回転軸６にスラスト荷重が加わると、
このスラスト荷重は転動体５、５を介して外輪３に伝達
される。この結果この外輪３が、上記スラスト荷重の大
きさに応じて歪み、この歪みの大きさが、上記歪みゲー
ジ８によって検出される。そこで、この歪みゲージ８の
検出信号により、上記回転軸６に加わるスラスト荷重を
知る事ができる。When a thrust load is applied to the rotary shaft 6,
This thrust load is transmitted to the outer ring 3 via the rolling elements 5 and 5. As a result, the outer ring 3 is distorted according to the magnitude of the thrust load, and the magnitude of this strain is detected by the strain gauge 8. Therefore, the thrust load applied to the rotary shaft 6 can be known from the detection signal of the strain gauge 8.
【０００７】[0007]
【発明が解決しようとする課題】ところが、上述の様に
構成される従来構造によって、回転支持部分に加わるス
ラスト荷重を知る場合、次のの様な、解決すべき問
題がある。However, when the thrust load applied to the rotation supporting portion is known by the conventional structure configured as described above, there are the following problems to be solved.
【０００８】外輪３の端部外周面に平坦面７を形成す
る作業は面倒で、センサ付転がり軸受の製作費を高くす
る原因となる。The work of forming the flat surface 7 on the outer peripheral surface of the end portion of the outer ring 3 is troublesome, and causes an increase in the manufacturing cost of the rolling bearing with sensor.
【０００９】歪みゲージ８を上記平坦面７に確実に添
着する作業が面倒で、やはりセンサ付転がり軸受の製作
費を高くする原因となる。 即ち、上記歪みゲージ８を平坦面７に添着するのは、接
着剤により行なうのが一般的である。一方、上記平坦面
７の加工時には、加工部分にクーラントと呼ばれる切削
油を注ぐ為、加工直後の平坦面７にはこの切削油が付着
している。しかも、外輪３を含め、転がり軸受の構成部
材の表面には、防錆の為に油を付着したままにしておく
必要がある。この為、上記歪みゲージを平坦面７に接着
するには、この平坦面７部分の油を除去しなければなら
ず、平坦面７の防錆を図る為には、接着後に再び平坦面
７に油を塗布する必要がある。従って、接着が確実に行
なわれたか否かを確認する為の検査行程を含め、歪みゲ
ージ８を平坦面７に添着する為の作業が面倒になる。The work of securely attaching the strain gauge 8 to the flat surface 7 is troublesome, which also causes an increase in the manufacturing cost of the rolling bearing with sensor. That is, the strain gauge 8 is generally attached to the flat surface 7 with an adhesive. On the other hand, when the flat surface 7 is machined, a cutting oil called a coolant is poured into the machined portion, so that the cutting oil adheres to the flat surface 7 immediately after the machining. Moreover, it is necessary to keep oil adhered to the surfaces of the components of the rolling bearing, including the outer ring 3, for rust prevention. Therefore, in order to bond the strain gauge to the flat surface 7, the oil on the flat surface 7 must be removed. To prevent the flat surface 7 from rusting, the flat surface 7 is bonded to the flat surface 7 again after the bonding. It is necessary to apply oil. Therefore, the work for attaching the strain gauge 8 to the flat surface 7 is troublesome, including the inspection process for confirming whether or not the bonding is reliably performed.
【００１０】本発明の回転支持部分のスラスト荷重測定
装置は、上述の様な事情に鑑みて発明したものである。The thrust load measuring device of the rotary support portion of the present invention was invented in view of the above-mentioned circumstances.
【００１１】[0011]
【課題を解決するための手段】本発明の回転支持部分の
スラスト荷重測定装置は、外周面に内輪軌道を有する内
輪と、内周面に外輪軌道を有する外輪と、上記内輪軌道
と外輪軌道との間に転動自在に設けられた複数の転動体
と、上記内輪と外輪との内の一方の軌道輪である静止軌
道輪を、回転不能に支持する軸受固定部材と、上記内輪
と外輪との他方の軌道輪である回転軌道輪に嵌合した状
態で回転する回転部材とから成る回転支持部分に組み込
まれ、この回転部材に加わるスラスト荷重を測定するも
のである。A thrust load measuring device for a rotary support portion of the present invention comprises an inner ring having an inner ring raceway on an outer peripheral surface, an outer ring having an outer ring raceway on an inner peripheral surface, and the inner ring raceway and the outer ring raceway. A plurality of rolling elements rotatably provided between the inner ring and the outer ring, and a stationary bearing ring that is one of the inner ring and the outer ring, the bearing fixing member that non-rotatably supports the inner ring and the outer ring. It is incorporated in a rotation support portion composed of a rotating member that rotates in a state of being fitted to a rotating bearing ring which is the other bearing ring, and measures the thrust load applied to this rotating member.
【００１２】この様な本発明の回転支持部分のスラスト
荷重測定装置の場合、上記軸受固定部材の周面には、上
記静止軌道輪の端面と対向する段部が設けられており、
この段部と上記静止軌道輪の端面との間には荷重センサ
が挟持されており、上記静止軌道輪は上記回転支持部分
の周面に、スラスト方向の変位自在に緩く嵌合してい
る。In the case of the thrust load measuring device for the rotation supporting portion of the present invention as described above, a step portion facing the end surface of the stationary race is provided on the peripheral surface of the bearing fixing member.
A load sensor is sandwiched between this step portion and the end surface of the stationary raceway wheel, and the stationary raceway wheel is loosely fitted to the peripheral surface of the rotary support portion so as to be displaceable in the thrust direction.
【００１３】[0013]
【作用】上述の様に構成される本発明の回転支持部分の
スラスト荷重測定装置は、次の様に作用して、回転部材
に加わるスラスト荷重を測定する。即ち、回転部材に加
わるスラスト荷重は回転軌道輪に伝わり、更に、転動体
を介して静止軌道輪に伝わる。この結果荷重センサが、
静止軌道輪の端面と軸受固定部材の段部との間で、上記
スラスト荷重に基づいて挟持される。従って、上記荷重
センサの検出信号により、上記スラスト荷重を知る事が
できる。The thrust load measuring device for the rotary support portion of the present invention constructed as described above acts as follows to measure the thrust load applied to the rotary member. That is, the thrust load applied to the rotating member is transmitted to the rotating race ring and further transmitted to the stationary race ring through the rolling elements. As a result, the load sensor
It is sandwiched between the end surface of the stationary race ring and the step portion of the bearing fixing member based on the thrust load. Therefore, the thrust load can be known from the detection signal of the load sensor.
【００１４】[0014]
【実施例】図１〜２は本発明の第一実施例を示してい
る。外周面に深溝型の内輪軌道２を有する内輪１と、内
周面に深溝型の外輪軌道４を有する外輪３と、上記内輪
軌道２と外輪軌道４との間に転動自在に設けられた複数
の転動体５（玉）とにより、深溝型の玉軸受を構成して
いる。静止軌道輪である外輪３は、軸受固定部材である
ハウジング１１の内側に、軸方向（図１の左右方向）に
亙る変位自在に、緩く嵌合支持している。但し、上記外
輪３の外周面とハウジング１１の内周面との間には、キ
ー係合部を設ける等により、この外輪３が回転する事を
防止している。又、上記内輪１には、回転部材である、
図示しない主軸を嵌合固定して、この主軸と内輪１とを
一体的に結合している。1 and 2 show a first embodiment of the present invention. An inner ring 1 having a deep groove type inner ring raceway 2 on the outer peripheral surface, an outer ring 3 having a deep groove type outer ring raceway 4 on the inner peripheral surface, and a rollable installation between the inner ring raceway 2 and the outer ring raceway 4 A plurality of rolling elements 5 (balls) form a deep groove type ball bearing. The outer race 3 which is a stationary raceway is loosely fitted and supported inside the housing 11 which is a bearing fixing member so as to be displaceable in the axial direction (the left-right direction in FIG. 1). However, a key engaging portion is provided between the outer peripheral surface of the outer ring 3 and the inner peripheral surface of the housing 11 to prevent the outer ring 3 from rotating. Further, the inner ring 1 is a rotating member,
A main shaft (not shown) is fitted and fixed, and the main shaft and the inner ring 1 are integrally connected.
【００１５】上記ハウジング１１の内周面端部には鍔部
１２を形成し、この鍔部１２の内側面（図１の左側面）
を段部１３としている。そして、この段部１３と上記外
輪３との間に、荷重センサ１４を挟持している。図１〜
２に示した第一実施例の場合には、この荷重センサ１４
として、パーマロイや軟鉄などの強磁性体窓付きで円筒
状のコア１５に磁化用のコイル１６を巻回したものを使
用している。この荷重センサ１４にスラスト荷重を加え
ると、上記コア１５の円筒部にひずみを生じ、磁束密度
が変化する。この様な荷重センサ１４は、コア１５を、
上記段部１３と外輪３の端面との間で挟持している。A flange portion 12 is formed at an end portion of the inner peripheral surface of the housing 11, and an inner side surface of the flange portion 12 (left side surface in FIG. 1).
Is the stepped portion 13. A load sensor 14 is sandwiched between the step portion 13 and the outer ring 3. Figure 1
In the case of the first embodiment shown in FIG.
As the magnetic field, a magnetized coil 16 is wound around a cylindrical core 15 having a ferromagnetic window such as permalloy or soft iron. When a thrust load is applied to the load sensor 14, the cylindrical portion of the core 15 is distorted and the magnetic flux density changes. In such a load sensor 14, the core 15 is
It is sandwiched between the step portion 13 and the end surface of the outer ring 3.
【００１６】上記コア１５は上記外輪３の端面部分に、
抑え環１７によって支持している。金属板により、断面
Ｌ字形で全体が円環状に形成された、この抑え環１７
は、円筒部１８の一端（図１の右端）に抑え板部１９
を、他端（図１の左端）に係止部２０を、それぞれ形成
している。上記コア部１５は、上記円筒部１８の内側に
保持されて、上記抑え板部１９と上記外輪３の端面との
間に挟持される。この状態で、上記係止部２０は、上記
外輪の端部外周面に形成された係止溝２１に係合して、
上記抑え環１７と外輪３との分離防止を図っている。The core 15 is provided on the end surface portion of the outer ring 3,
It is supported by the retaining ring 17. This retaining ring 17 is formed in an annular shape with an L-shaped cross section by a metal plate.
Is attached to one end (right end in FIG. 1) of the cylindrical portion 18 by the restraining plate portion 19
Is formed at the other end (the left end in FIG. 1). The core portion 15 is held inside the cylindrical portion 18 and is sandwiched between the restraining plate portion 19 and the end surface of the outer ring 3. In this state, the engaging portion 20 engages with the engaging groove 21 formed on the outer peripheral surface of the end portion of the outer ring,
It is intended to prevent the retaining ring 17 and the outer ring 3 from being separated from each other.
【００１７】尚、上記円筒部１８の外径は、外輪３の外
径よりも少し小さくし、上記係止部２０は上記係止溝２
１の内側に、軸方向に亙る変位自在に、緩く係合してい
る。これは、上記抑え環１７の存在が、上記荷重センサ
１４によるスラスト荷重の測定値に影響を及ぼさない様
にする為である。The outer diameter of the cylindrical portion 18 is made slightly smaller than the outer diameter of the outer ring 3, and the engaging portion 20 has the engaging groove 2
It is loosely engaged with the inside of 1 so as to be displaceable in the axial direction. This is because the presence of the restraining ring 17 does not affect the measured value of the thrust load by the load sensor 14.
【００１８】スラスト荷重を測定する場合には、上記コ
イル１６に交流電流を流しておく。スラスト荷重に基づ
いて上記コア１５が歪むと、上記コイル１６に流れる交
流電流に基づく磁束密度が変化する。そこで、交流ブリ
ッジにより、上記スラスト荷重に基づくコイル１６のイ
ンピーダンス変化を測定すれば、上記スラスト荷重の大
きさを測定できる。When measuring the thrust load, an alternating current is passed through the coil 16. When the core 15 is distorted due to the thrust load, the magnetic flux density based on the alternating current flowing through the coil 16 changes. Therefore, the magnitude of the thrust load can be measured by measuring the impedance change of the coil 16 based on the thrust load by the AC bridge.
【００１９】即ち、本発明の回転支持部分のスラスト荷
重測定装置を組み込んだ工作機械等の運転時に、回転軸
に加わるスラスト荷重は、内輪１から転動体５を介して
外輪３に伝わる。この結果、荷重センサを構成するコア
１５が、外輪３の端面とハウジング１１の段部１３との
間で、上記スラスト荷重に基づいて挟持される。この結
果、上記コイル１６のインピーダンスが変化するので、
このインピーダンスを測定する事により、上記スラスト
荷重を知る事ができる。That is, during operation of a machine tool or the like incorporating the thrust load measuring device for the rotary support portion of the present invention, the thrust load applied to the rotary shaft is transmitted from the inner ring 1 to the outer ring 3 via the rolling elements 5. As a result, the core 15 that constitutes the load sensor is sandwiched between the end surface of the outer ring 3 and the step portion 13 of the housing 11 based on the thrust load. As a result, the impedance of the coil 16 changes,
The thrust load can be known by measuring this impedance.
【００２０】次に、図３は本発明の第二実施例を示して
いる。本実施例の場合には、互いに間隔をあけて配置さ
れた１対の銅箔２２、２２の間隔ｄの変動に基づき、ス
ラスト荷重の測定を自在としている。即ち、外輪３の端
面に形成した凹部２３に円環状の絶縁材２４を埋設し、
この絶縁材２４の表面に一方の銅箔２２を、全周に亙り
連続して、或は間欠的に添着している。一方、金属等、
十分な剛性と弾性とを有する材料により造られた保持環
２５の片面で、上記外輪３の端面と対向する部分に固定
された絶縁材２４の表面には他方の銅箔２２を添着して
いる。そして、これら両銅箔２２、２２に、リード線２
６、２６の端部を接続している。Next, FIG. 3 shows a second embodiment of the present invention. In the case of the present embodiment, the thrust load can be freely measured based on the variation of the distance d between the pair of copper foils 22, 22 arranged at a distance from each other. That is, the annular insulating material 24 is embedded in the recess 23 formed in the end surface of the outer ring 3,
One copper foil 22 is attached to the surface of the insulating material 24 continuously or intermittently over the entire circumference. On the other hand, metal etc.
The copper foil 22 of the other side is attached to the surface of the insulating material 24 fixed to a portion of the holding ring 25 made of a material having sufficient rigidity and elasticity, which is opposed to the end surface of the outer ring 3. . The lead wire 2 is attached to the copper foils 22 and 22.
The ends of 6, 26 are connected.
【００２１】又、上記保持環２５の片面外周部分には、
薄肉の突壁２７を、全周に亙って形成し、この突壁２７
の先端縁を、上記外輪３の端面に突き当てている。この
様に突壁２７の先端縁を上記外輪３の端面に突き当てた
状態で、上記両銅箔２２、２２同士が、間隔ｄなる隙間
を介して対向する。In addition, on the outer peripheral portion of one side of the holding ring 25,
A thin projecting wall 27 is formed over the entire circumference.
Of the outer ring 3 is abutted against the end surface of the outer ring 3. In this way, with the tip edge of the projecting wall 27 abutting against the end surface of the outer ring 3, the two copper foils 22, 22 face each other with a gap of the distance d.
【００２２】上記外輪３にスラスト荷重が加わると、上
記突壁２７が弾性的に圧縮されて、上記１対の銅箔２
２、２２間の間隔ｄが変化する。この変化に伴って、こ
れら銅箔２２、２２間の静電容量が変化するので、上記
リード線２６、２６によってこの静電容量を測定すれ
ば、上記スラスト荷重を求める事ができる。その他の構
成及び作用は、前述した第一実施例と同様である為、同
等部分には同一符号を付して、重複する説明を省略す
る。When a thrust load is applied to the outer ring 3, the projecting wall 27 is elastically compressed, and the pair of copper foils 2 are
The distance d between 2 and 22 changes. Since the capacitance between the copper foils 22 and 22 changes with this change, the thrust load can be obtained by measuring the capacitance with the lead wires 26 and 26. Other configurations and operations are the same as those in the first embodiment described above, and therefore, the same reference numerals are given to the same portions and duplicate description will be omitted.
【００２３】次に、図４は本発明の第三実施例を示して
いる。本実施例の場合には、外輪３の端面と段部１３と
の間に設けた保持環２５ａに保持された複数の圧電素子
２８を、円周方向に亙って等間隔に保持している。そし
て、外輪３に加わるスラスト荷重を、この圧電素子２８
によって支える様にしている。従って、この圧電素子２
８の出力電圧を測定すれば、上記スラスト荷重を求める
事ができる。Next, FIG. 4 shows a third embodiment of the present invention. In the case of the present embodiment, the plurality of piezoelectric elements 28 held by the holding ring 25a provided between the end surface of the outer ring 3 and the step portion 13 are held at equal intervals in the circumferential direction. . Then, the thrust load applied to the outer ring 3 is applied to the piezoelectric element 28.
I am trying to support it. Therefore, this piezoelectric element 2
The thrust load can be obtained by measuring the output voltage of No. 8.
【００２４】[0024]
【発明の効果】本発明の回転支持部分のスラスト荷重測
定装置は、以上に述べた通り構成され作用するので、組
立作業が容易で、製作費の低廉化を図れる。又、荷重セ
ンサ部分と転がり軸受部分とを容易に分解組み立てでき
るので、一方のみが破損した場合に、破損した部分のみ
を交換して、破損していない部分の再利用が可能にな
る。この為、修繕費の低廉化も図れる。Since the thrust load measuring device for the rotary support portion of the present invention is constructed and operates as described above, the assembling work is easy and the manufacturing cost can be reduced. Further, since the load sensor portion and the rolling bearing portion can be easily disassembled and assembled, when only one is damaged, only the damaged portion can be replaced and the undamaged portion can be reused. Therefore, repair costs can be reduced.
【図１】本発明の第一実施例を示す部分断面図。FIG. 1 is a partial sectional view showing a first embodiment of the present invention.
【図２】第一実施例に使用する荷重センサの斜視図。FIG. 2 is a perspective view of a load sensor used in the first embodiment.
【図３】本発明の第二実施例を示す部分断面図。FIG. 3 is a partial sectional view showing a second embodiment of the present invention.
【図４】同第三実施例を示す部分断面図。FIG. 4 is a partial sectional view showing the third embodiment.
【図５】従来構造の１例を示す断面図。FIG. 5 is a sectional view showing an example of a conventional structure.
【図６】同じく端面図。FIG. 6 is an end view of the same.
【図７】同じく部分平面図。FIG. 7 is a partial plan view of the same.
１ 内輪 ２ 内輪軌道 ３ 外輪 ４ 外輪軌道 ５ 転動体 ６ 回転軸 ７ 平坦面 ８ 歪みゲージ ９ 引出線 １０ コンセント １１ ハウジング １２ 鍔部 １３ 段部 １４ 荷重センサ １５ コア １６ コイル １７ 抑え環 １８ 円筒部 １９ 抑え板部 ２０ 係止部 ２１ 係止溝 ２２ 銅箔 ２３ 凹部 ２４ 絶縁体 ２５、２５ａ 保持環 ２６ リード線 ２７ 突壁 ２８ 圧電素子 1 Inner ring 2 Inner ring raceway 3 Outer ring 4 Outer ring raceway 5 Rolling element 6 Rotating shaft 7 Flat surface 8 Strain gauge 9 Leader wire 10 Outlet 11 Housing 12 Collar part 13 Step part 14 Load sensor 15 Core 16 Coil 17 Suppression ring 18 Cylindrical part 19 Suppression Plate portion 20 Locking portion 21 Locking groove 22 Copper foil 23 Recess 24 Insulator 25, 25a Holding ring 26 Lead wire 27 Projection wall 28 Piezoelectric element
Claims (1)
面に外輪軌道を有する外輪と、上記内輪軌道と外輪軌道
との間に転動自在に設けられた複数の転動体と、上記内
輪と外輪との内の一方の軌道輪である静止軌道輪を、回
転不能に支持する軸受固定部材と、上記内輪と外輪との
他方の軌道輪である回転軌道輪に嵌合した状態で回転す
る回転部材とから成る回転支持部分に組み込まれ、この
回転部材に加わるスラスト荷重を測定する回転支持部分
のスラスト荷重測定装置であって、上記軸受固定部材の
周面には、上記静止軌道輪の端面と対向する段部が設け
られており、この段部と上記静止軌道輪の端面との間に
は荷重センサが挟持されており、上記静止軌道輪は上記
回転支持部分の周面に、スラスト方向の変位自在に緩く
嵌合している回転支持部分のスラスト荷重測定装置。1. An inner ring having an inner ring raceway on an outer peripheral surface, an outer ring having an outer ring raceway on an inner peripheral surface, a plurality of rolling elements rotatably provided between the inner ring raceway and the outer ring raceway, Rotate in a state where a stationary bearing ring, which is one of the inner ring and the outer ring, is fixed to a bearing fixing member that non-rotatably supports it, and a rotating bearing ring that is the other bearing ring of the inner ring and the outer ring. A thrust load measuring device for a rotary support portion, which is incorporated in a rotary support portion composed of a rotary member for measuring the thrust load applied to the rotary member, wherein A step portion facing the end surface is provided, and a load sensor is sandwiched between the step portion and the end surface of the stationary bearing ring. Rotation support that is loosely fitted so that it can be displaced in any direction. Thrust load measuring device for holding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263670A JPH07120334A (en) | 1993-10-21 | 1993-10-21 | Apparatus for measuring thrust load at rotary supporting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263670A JPH07120334A (en) | 1993-10-21 | 1993-10-21 | Apparatus for measuring thrust load at rotary supporting part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07120334A true JPH07120334A (en) | 1995-05-12 |
Family
ID=17392716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5263670A Pending JPH07120334A (en) | 1993-10-21 | 1993-10-21 | Apparatus for measuring thrust load at rotary supporting part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07120334A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149520A1 (en) * | 2007-06-04 | 2008-12-11 | Ntn Corporation | Bearing device |
| JP2009192390A (en) * | 2008-02-15 | 2009-08-27 | Ntn Corp | Wheel bearing with sensor |
| JP2011257009A (en) * | 2011-08-26 | 2011-12-22 | Nsk Ltd | Bearing device, and method of assembling the same |
| JP2012507694A (en) * | 2008-11-04 | 2012-03-29 | ピエツォクリスト・アドヴァンスト・ゼンゾリクス・ゲー・エム・ベー・ハー | Force measuring ring with annular housing |
| US8424209B2 (en) | 2007-07-04 | 2013-04-23 | Nsk Ltd. | Assembling method of bearing unit |
| CN104535256A (en) * | 2014-12-24 | 2015-04-22 | 北京航空航天大学 | Measuring device for measuring micro thrust |
| CN104535240A (en) * | 2014-12-24 | 2015-04-22 | 北京航空航天大学 | Micro-thrust measurement device with thermal protection system |
| JP2021004816A (en) * | 2019-06-27 | 2021-01-14 | 日本精工株式会社 | Load calculation system |
-
1993
- 1993-10-21 JP JP5263670A patent/JPH07120334A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149520A1 (en) * | 2007-06-04 | 2008-12-11 | Ntn Corporation | Bearing device |
| US8424209B2 (en) | 2007-07-04 | 2013-04-23 | Nsk Ltd. | Assembling method of bearing unit |
| JP2009192390A (en) * | 2008-02-15 | 2009-08-27 | Ntn Corp | Wheel bearing with sensor |
| JP2012507694A (en) * | 2008-11-04 | 2012-03-29 | ピエツォクリスト・アドヴァンスト・ゼンゾリクス・ゲー・エム・ベー・ハー | Force measuring ring with annular housing |
| JP2011257009A (en) * | 2011-08-26 | 2011-12-22 | Nsk Ltd | Bearing device, and method of assembling the same |
| CN104535256A (en) * | 2014-12-24 | 2015-04-22 | 北京航空航天大学 | Measuring device for measuring micro thrust |
| CN104535240A (en) * | 2014-12-24 | 2015-04-22 | 北京航空航天大学 | Micro-thrust measurement device with thermal protection system |
| JP2021004816A (en) * | 2019-06-27 | 2021-01-14 | 日本精工株式会社 | Load calculation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5111098A (en) | Unitary rotational speed sensor | |
| EP1130362B1 (en) | Method of manufacturing a magnetic encoder | |
| JP6275406B2 (en) | Magnetic encoder device and rotation detection device | |
| JPH07120334A (en) | Apparatus for measuring thrust load at rotary supporting part | |
| US6370967B1 (en) | Torque sensor with joint means for producing a consistent magnetic effect | |
| JPH08240221A (en) | Antifriction bearing unit with rotational speed detector | |
| JP2008286219A (en) | Bearing device and bearing preload detecting device | |
| US5574361A (en) | Switched reluctance angular velocity sensor | |
| JPS5946526A (en) | Electromagnetic stress sensor | |
| JPH0954107A (en) | Tone wheel for detecting rotational speed and its manufacture | |
| JPH09166136A (en) | Rolling bearing unit with rotating speed detector | |
| JPH09145496A (en) | Magnetostrictive torque sensor | |
| JPH07123677A (en) | Brushless motor | |
| JPH11132877A (en) | Torque sensor and stator | |
| JP4477416B2 (en) | Rotation position detector | |
| JP2003156364A (en) | Direct actuator having slide position detector | |
| JPH08303452A (en) | Rolling bearing unit with rotating speed detecting device | |
| JPH03218427A (en) | Magnetostriction type torque sensor | |
| JPH06738Y2 (en) | Torque detector | |
| JPH0755601A (en) | Magnetostriction type torque sensor | |
| JPH03277156A (en) | Outer rotor type spindle motor | |
| JP3001028B2 (en) | Magnetostrictive torque sensor | |
| JP2009127766A (en) | Bearing device | |
| JPS6179020A (en) | Detection method and device for contact position between shaft and sleeve of bearing for dynamic pressure fluid | |
| JP2601170Y2 (en) | Rolling bearing unit with rotation speed detector |