JP2019015566A - Tester for eccentric rotating component - Google Patents

Tester for eccentric rotating component Download PDF

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JP2019015566A
JP2019015566A JP2017131992A JP2017131992A JP2019015566A JP 2019015566 A JP2019015566 A JP 2019015566A JP 2017131992 A JP2017131992 A JP 2017131992A JP 2017131992 A JP2017131992 A JP 2017131992A JP 2019015566 A JP2019015566 A JP 2019015566A
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eccentric
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eccentric rotating
rotating
shaft
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JP6891674B2 (en
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誠 藤波
Makoto Fujinami
誠 藤波
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NSK Ltd
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Abstract

To provide a tester for eccentric rotating components with which, of a simple configuration though, it is possible to apply an eccentric rotating load in the radial direction to an eccentric rotating component, and which is suitable for confirming the rotation performance and durability of the eccentric rotating component.SOLUTION: The tester for eccentric rotating components comprises a revolving shaft eccentric to the center of rotation and having at least one eccentric part around which eccentric rotating components are mountable, and at least one load shaft arranged at a position parallel to the revolving shaft and apart from the revolving shaft and having a load-bearing part at a position that overlaps the eccentric part in the axial direction, the load-bearing part coming in contact with the eccentric rotating component or a jig provided around it as the rotation of the revolving shaft goes on, with an eccentric rotating load thereby applied to the eccentric rotating component.SELECTED DRAWING: Figure 1

Description

本発明は、偏芯回転部品用試験装置に関し、より詳細には、偏芯回転する部位に使用される軸受等の偏芯回転部品に荷重を負荷する偏芯回転部品用試験装置に関する。   The present invention relates to a testing apparatus for eccentric rotating parts, and more particularly to a testing apparatus for eccentric rotating parts that applies a load to an eccentric rotating part such as a bearing used in a part that rotates eccentrically.

従来、減速機やコンプレッサなどの回転機械には、偏芯回転する部位に転がり軸受（以下、偏芯軸受と称す。）が使用されている。例えば、特許文献１に記載の減速機や特許文献２に記載のコンプレッサでは、回転軸の回転に伴って、偏芯軸受にラジアル方向の偏芯回転荷重が負荷される。   Conventionally, rolling bearings (hereinafter referred to as “eccentric bearings”) are used in parts that rotate eccentrically in rotating machines such as speed reducers and compressors. For example, in the reduction gear described in Patent Document 1 and the compressor described in Patent Document 2, an eccentric rotational load in the radial direction is applied to the eccentric bearing as the rotation shaft rotates.

偏芯軸受の回転性能や耐久性は、回転機械の寿命に大きく左右することから、偏芯軸受の試験を行うことが求められている。また、従来、偏芯軸受の試験を行う試験装置としては、スラスト転がり軸受にスラスト荷重を負荷し、実機に近い状態で軸受の性能を評価するものが開示されている（例えば、特許文献３及び４参照）。   Since the rotational performance and durability of the eccentric bearing greatly depend on the life of the rotating machine, it is required to test the eccentric bearing. Conventionally, as a test apparatus for testing an eccentric bearing, an apparatus that applies a thrust load to a thrust rolling bearing and evaluates the performance of the bearing in a state close to an actual machine has been disclosed (for example, Patent Document 3 and 4).

特許第２８９９０４７号公報Japanese Patent No. 2899047 特開２００２−３３９９７５号公報JP 2002-339975 A 特開２００７−２４８３０５号公報JP 2007-248305 A 特開２００３−１２０６６４号公報JP 2003-120664 A

しかしながら、従来の試験機では、特許文献３及び４のように、スラスト転がり軸受にスラスト荷重を負荷して軸受の性能を評価する試験装置は知られているが、ラジアル方向の偏芯回転荷重を再現するものがなく、ラジアル方向の偏芯回転荷重を負荷する転がり軸受を試験する場合、実機を使って該試験を行うしかなかった。また、製品の仕様などが変わった場合に、対応する偏芯軸受の耐久性を試験することが困難であった。   However, in the conventional testing machines, as in Patent Documents 3 and 4, there is known a test apparatus that evaluates the performance of the bearing by applying a thrust load to the thrust rolling bearing, but the eccentric rotational load in the radial direction is known. There was nothing to reproduce, and when testing a rolling bearing that applied an eccentric rotational load in the radial direction, the test could only be performed using an actual machine. In addition, when the product specifications change, it is difficult to test the durability of the corresponding eccentric bearing.

特許文献１には、表面粗さの違いによる偏芯軸受の耐久性を確認する試験を行っているが、試験には単純なラジアル荷重を付与する荷重試験機が用いられており、偏芯回転荷重を再現した試験は行われていない。   In Patent Document 1, a test for confirming the durability of the eccentric bearing due to the difference in surface roughness is performed. However, a load tester that applies a simple radial load is used for the test, and the eccentric rotation is performed. There are no tests that reproduce the load.

本発明は、前述した課題を鑑みてなされたものであり、その目的は、簡単な構成で、偏芯回転部品にラジアル方向の偏心回転荷重を与えることができ、偏芯回転部品の回転性能や耐久性を確認するのに好適な偏芯回転部品用試験装置を提案することである。   The present invention has been made in view of the above-described problems, and the object thereof is to provide an eccentric rotational load in a radial direction to an eccentric rotating component with a simple configuration. It is to propose a test apparatus for an eccentric rotating part suitable for confirming durability.

本発明の上記目的は、下記の構成により達成される。
（１） 回転中心に対して偏芯し、周囲に偏芯回転部品を配置可能な少なくとも１つの偏芯部を有する回転軸と、
前記回転軸と平行、且つ、該回転軸から離れた位置に配置されており、前記偏芯部と軸方向において重なる位置に荷重負荷部を有する少なくとも１つの荷重軸と、
を備え、
前記荷重負荷部は、前記回転軸の回転に伴って、前記偏芯回転部品又はその周囲に設けられた治具に接触することで、前記偏芯回転部品に偏芯回転荷重を負荷する偏芯回転部品用試験装置。
（２） 前記回転軸は、複数の前記偏芯部を有し、
前記荷重負荷部は、複数の前記偏芯部と軸方向において重なる位置に設けられ、
前記荷重負荷部は、複数の前記偏芯部の周囲に配置された複数の前記偏芯回転部品に前記偏芯回転荷重を負荷する（１）に記載の偏芯回転部品用試験装置。
（３） 前記回転軸は、複数の前記偏芯部を有し、
前記荷重軸は、前記偏芯部と軸方向において重なる位置に設けられる前記荷重負荷部をそれぞれ有する複数の前記荷重軸を備え、
複数の前記荷重負荷部は、複数の前記偏芯部の周囲に配置された複数の前記偏芯回転部品に前記偏芯回転荷重をそれぞれ負荷する（１）に記載の偏芯回転部品用試験装置。
（４） 前記偏芯回転部品は、転がり軸受である（１）〜（３）のいずれかに記載の偏芯回転部品用試験装置。 The above object of the present invention can be achieved by the following constitution.
(1) a rotating shaft that is eccentric with respect to the center of rotation and has at least one eccentric portion on which an eccentric rotating component can be arranged;
At least one load shaft that is disposed in a position parallel to the rotation shaft and away from the rotation shaft and having a load load portion at a position overlapping the eccentric portion in the axial direction;
With
The load-loading portion contacts the eccentric rotating component or a jig provided around the eccentric rotating component along with the rotation of the rotating shaft, thereby causing an eccentric rotating load to be applied to the eccentric rotating component. Test equipment for rotating parts.
(2) The rotating shaft has a plurality of the eccentric portions,
The load load portion is provided at a position overlapping with the plurality of eccentric portions in the axial direction,
The said load load part is a test apparatus for eccentric rotating parts as described in (1) which loads the said eccentric rotating load to the said several eccentric rotating parts arrange | positioned around the said several eccentric part.
(3) The rotating shaft has a plurality of the eccentric portions,
The load shaft includes a plurality of the load shafts each having the load load portion provided at a position overlapping with the eccentric portion in the axial direction,
The test apparatus for eccentric rotating parts according to (1), wherein the plurality of load loading parts respectively load the eccentric rotating load to the plurality of eccentric rotating parts arranged around the plurality of eccentric parts. .
(4) The eccentric rotating component testing apparatus according to any one of (1) to (3), wherein the eccentric rotating component is a rolling bearing.

本発明の偏芯回転部品用試験装置によれば、回転中心に対して偏芯し、周囲に偏芯回転部品を配置可能な少なくとも１つの偏芯部を有する回転軸と、回転軸と平行、且つ、該回転軸から離れた位置に配置されており、偏芯部と軸方向において重なる位置に荷重負荷部を有する少なくとも１つの荷重軸と、を備え、荷重負荷部は、回転軸の回転に伴って、偏芯回転部品又はその周囲に設けられた治具に接触することで、偏芯回転部品に偏芯回転荷重を負荷する。これにより、簡単な構成で、偏芯回転部品にラジアル方向の偏心回転荷重を与えることができ、偏芯回転部品の回転性能や耐久性を簡単に確認することができる。   According to the eccentric rotating part testing apparatus of the present invention, a rotating shaft that is eccentric with respect to the center of rotation and has at least one eccentric portion on which the eccentric rotating part can be arranged, and a parallel to the rotating axis, And at least one load shaft that is disposed at a position away from the rotation shaft and has a load load portion at a position overlapping with the eccentric portion in the axial direction, and the load load portion is configured to rotate the rotation shaft. Accordingly, an eccentric rotational load is applied to the eccentric rotating component by contacting the eccentric rotating component or a jig provided around the eccentric rotating component. Thereby, it is possible to apply an eccentric rotational load in the radial direction to the eccentric rotating component with a simple configuration, and it is possible to easily check the rotational performance and durability of the eccentric rotating component.

本発明の第１実施形態に係る偏芯回転部品用試験装置の概略図である。It is the schematic of the testing apparatus for eccentric rotating parts which concerns on 1st Embodiment of this invention. 図１のＩＩ−ＩＩ線に沿った断面図である。It is sectional drawing along the II-II line of FIG. （ａ）は、１本の荷重軸が偏芯回転荷重を負荷する場合の荷重負荷部と治具との位置関係を示す模式図であり、（ｂ）は、その場合の軸受への偏芯回転荷重のかかり方を模式的に示すグラフである。(A) is a schematic diagram which shows the positional relationship of a load load part and jig | tool when one load axis applies eccentric rotation load, (b) is eccentricity to the bearing in that case. It is a graph which shows typically how to apply rotational load. （ａ）は、２本の荷重軸が偏芯回転荷重を負荷する場合の荷重負荷部と治具との位置関係を示す模式図であり、（ｂ）は、その場合の軸受への偏芯回転荷重のかかり方を模式的に示すグラフである。(A) is a schematic diagram which shows the positional relationship of a load load part and jig | tool when two load shafts apply eccentric rotation load, (b) is eccentricity to the bearing in that case. It is a graph which shows typically how to apply rotational load. 本発明の第２実施形態に係る偏芯回転部品用試験装置の概略図である。It is the schematic of the testing apparatus for eccentric rotating parts which concerns on 2nd Embodiment of this invention. （ａ）は、１本の荷重軸が偏芯回転荷重を負荷する場合の荷重負荷部と治具との位置関係を示す模式図であり、（ｂ）は、その場合の軸受への偏芯回転荷重のかかり方を模式的に示すグラフである。(A) is a schematic diagram which shows the positional relationship of a load load part and jig | tool when one load axis applies eccentric rotation load, (b) is eccentricity to the bearing in that case. It is a graph which shows typically how to apply rotational load. 本発明の第３実施形態に係る偏芯回転部品用試験装置の概略図である。It is the schematic of the testing apparatus for eccentric rotating parts which concerns on 3rd Embodiment of this invention. （ａ）は、図７のように、荷重軸が２本の場合の荷重負荷部と治具との位置関係を示す模式図であり、（ｂ）は、その場合の軸受への偏芯回転荷重のかかり方を模式的に示すグラフである。(A) is a schematic diagram showing the positional relationship between the load-loading portion and the jig when there are two load shafts as shown in FIG. 7, and (b) is an eccentric rotation to the bearing in that case. It is a graph which shows typically how to apply a load. 本発明の第３実施形態の変形例に係る偏芯回転部品用試験装置の概略図である。It is the schematic of the testing apparatus for eccentric rotating parts which concerns on the modification of 3rd Embodiment of this invention.

以下、本発明の各実施形態に係る偏芯回転部品用試験装置について図面を参照して詳細に説明する。なお、以下の説明では、本試験装置にて偏芯回転荷重が負荷される偏心回転部品として、転がり軸受が用いられている。   Hereinafter, a testing apparatus for eccentric rotating parts according to each embodiment of the present invention will be described in detail with reference to the drawings. In the following description, a rolling bearing is used as an eccentric rotating part to which an eccentric rotating load is applied in the test apparatus.

（第１実施形態）
先ず、本発明の第１実施形態に係る偏芯回転部品用試験装置１０について説明する。図１及び図２に示すように、偏芯回転部品用試験装置１０は、基台１１に対して互いに平行に起立する１対の支持板１２、１３を備え、１対の支持板１２、１３は、回転軸２０と少なくとも１つの荷重軸（本実施形態では、４本）３０〜３３とを支持する。 (First embodiment)
First, the eccentric rotating part testing apparatus 10 according to the first embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the eccentric rotating component test apparatus 10 includes a pair of support plates 12 and 13 that stand parallel to each other with respect to a base 11, and a pair of support plates 12 and 13. Supports the rotating shaft 20 and at least one load shaft (four in this embodiment) 30-33.

回転軸２０は、１対の支持板１２、１３に軸受１４、１４を介して回転自在に支持されている。支持板１２から延出する回転軸２０の端部は、駆動源１５と接続されている。また、回転軸２０には、１対の支持板１２、１３の中間部に、回転中心Ｘに対して偏芯量ｅだけ偏芯し、周囲に偏芯回転部品である転がり軸受１を配置可能な少なくとも１つの円形の偏芯部２１を有する。なお、偏芯部２１は、回転軸２０と一体回転するものであればよく、回転軸２０に嵌合固定されてもよいし、一体に形成されてもよい。また、回転軸２０は、ベルトやギヤやカップリングなどを介して駆動源１５により駆動されてもよい。   The rotary shaft 20 is rotatably supported by a pair of support plates 12 and 13 via bearings 14 and 14. The end of the rotating shaft 20 extending from the support plate 12 is connected to the drive source 15. Further, the rotary shaft 20 can be eccentrically arranged by an eccentric amount e with respect to the rotation center X in the middle portion of the pair of support plates 12 and 13, and the rolling bearing 1 that is an eccentric rotating component can be disposed around the rotary shaft 20. And at least one circular eccentric portion 21. In addition, the eccentric part 21 should just be what rotates integrally with the rotating shaft 20, may be fitted and fixed to the rotating shaft 20, and may be formed integrally. The rotating shaft 20 may be driven by the drive source 15 via a belt, a gear, a coupling, or the like.

また、本実施形態では、転がり軸受１は、転動体２と保持器３とからなるケージアンドローラであるため、転動体２が偏芯部２１の外周面を転動するように配置され、また、転がり軸受１の周囲には、転動体２が転動する内周面を備えるリング状の治具１６が配置される。さらに、回転軸２０の周囲で、偏芯部２１の軸方向両側には、転がり軸受１及び治具１６の軸方向位置を規制するための１対の規制部材２２、２２が取り付けられている。   In the present embodiment, the rolling bearing 1 is a cage and roller composed of the rolling element 2 and the cage 3, so that the rolling element 2 is arranged to roll on the outer peripheral surface of the eccentric portion 21, and Around the rolling bearing 1, a ring-shaped jig 16 having an inner peripheral surface on which the rolling element 2 rolls is disposed. Further, a pair of restricting members 22 and 22 for restricting the axial positions of the rolling bearing 1 and the jig 16 are attached to both sides of the eccentric portion 21 in the axial direction around the rotating shaft 20.

また、４本の荷重軸３０〜３３は、回転軸２０と平行、且つ、回転軸２０からそれぞれ等しい距離だけ離れた位置に、円周方向等間隔となるように、１対の支持板１２、１３に取り付けられている。なお、図示しないが、各荷重軸３０〜３３は、１対の支持板１２、１３に、調整ボルトなどで固定位置、即ち、回転軸２０と荷重軸３０〜３３との間の軸間距離を調整可能なように取り付けられている。   The four load shafts 30 to 33 are parallel to the rotary shaft 20 and are spaced apart by an equal distance from the rotary shaft 20 at equal intervals in the circumferential direction. 13 is attached. Although not shown, each of the load shafts 30 to 33 is fixed to the pair of support plates 12 and 13 with an adjustment bolt or the like, that is, an inter-axis distance between the rotary shaft 20 and the load shafts 30 to 33. It is mounted so that it can be adjusted.

また、各荷重軸３０〜３３には、回転軸２０の偏芯部２１と軸方向において重なる位置に、治具１６の外周面と接触可能な円筒状の荷重負荷部３４が外嵌固定されている。各荷重軸３０〜３３は、回転軸２０の回転中心Ｘから治具１６の半径分だけ離れた位置に、荷重負荷部３４の外周面が位置するように配置される。   Further, a cylindrical load load portion 34 that can come into contact with the outer peripheral surface of the jig 16 is externally fitted and fixed to each of the load shafts 30 to 33 at a position overlapping the eccentric portion 21 of the rotating shaft 20 in the axial direction. Yes. The load shafts 30 to 33 are arranged such that the outer peripheral surface of the load load portion 34 is located at a position away from the rotation center X of the rotary shaft 20 by the radius of the jig 16.

このように構成された偏芯回転部品用試験装置１０では、回転軸２０が回転すると偏芯部２１が偏芯量ｅで偏芯回転する。これに伴い、転がり軸受１及びリング状の治具１６も偏芯回転する。そして、回転軸２０の回転に伴って、各荷重軸３０〜３３の荷重負荷部３４が、リング状の治具１６に順に接触することで、荷重軸３０〜３３の軸たわみにより、転がり軸受１にラジアル方向の偏芯回転荷重Ｐを負荷することができる。   In the eccentric rotating component testing apparatus 10 configured as described above, when the rotating shaft 20 rotates, the eccentric portion 21 rotates eccentrically by the eccentric amount e. Along with this, the rolling bearing 1 and the ring-shaped jig 16 also rotate eccentrically. As the rotary shaft 20 rotates, the load bearing portions 34 of the load shafts 30 to 33 sequentially come into contact with the ring-shaped jig 16, so that the rolling bearing 1 is caused by the shaft deflection of the load shafts 30 to 33. It is possible to apply an eccentric rotational load P in the radial direction.

なお、転がり軸受１に偏芯回転荷重Ｐを負荷する荷重軸の本数は、転がり軸受１が使用される実機の負荷状況に応じて決定されればよい。その場合、例えば、転がり軸受１に偏芯回転荷重Ｐを負荷しない荷重軸は、取り外してもよいが、調整ボルトなどで、該荷重を負荷しない位置まで移動すればよい。
例えば、１本の荷重軸３０が転がり軸受１に偏芯回転荷重Ｐを負荷する場合には、図３に示すように、１回転（３６０度）あたり１回の荷重ピークが発生する。 Note that the number of load shafts that apply the eccentric rotational load P to the rolling bearing 1 may be determined in accordance with the load state of the actual machine in which the rolling bearing 1 is used. In this case, for example, the load shaft that does not apply the eccentric rotational load P to the rolling bearing 1 may be removed, but may be moved to a position where the load is not applied by an adjustment bolt or the like.
For example, when one load shaft 30 applies an eccentric rotational load P to the rolling bearing 1, as shown in FIG. 3, a load peak occurs once per rotation (360 degrees).

また、１８０°位相離れた２本の荷重軸３０、３２が転がり軸受１に偏芯回転荷重Ｐを負荷する場合には、図４に示すように、１回転（３６０度）あたり２回の荷重ピークが発生する。   In addition, when the two load shafts 30 and 32 that are 180 degrees apart from each other apply an eccentric rotational load P to the rolling bearing 1, as shown in FIG. 4, two loads per one rotation (360 degrees). A peak occurs.

偏心回転荷重の大きさは、荷重軸３０〜３３の剛性（軸径、形状、支持スパン）やピッチ円直径（ＰＣＤ）を変えることで容易に変更できる。
また、荷重軸３０〜３３の支持部にばねを設け、ばねの反力で荷重を設定してもよい。
また、本実施形態では、荷重軸３０〜３３のピッチ円直径（ＰＣＤ）を変えることで、転がり軸受１の負荷圏の範囲を容易に変更できる。即ち、ＰＣＤを小さくすると、転がり軸受１の負荷圏が大きくなる。 The magnitude of the eccentric rotational load can be easily changed by changing the rigidity (shaft diameter, shape, support span) and pitch circle diameter (PCD) of the load shafts 30 to 33.
Moreover, a spring may be provided in the support part of the load shafts 30 to 33, and the load may be set by the reaction force of the spring.
Moreover, in this embodiment, the range of the load zone of the rolling bearing 1 can be easily changed by changing the pitch circle diameter (PCD) of the load shafts 30 to 33. That is, when the PCD is reduced, the load area of the rolling bearing 1 is increased.

以上説明したように、本実施形態の偏芯回転部品用試験装置１０では、回転中心Ｘに対して偏芯し、周囲に転がり軸受１を配置可能な偏芯部２１を有する回転軸２０と、回転軸２０と平行、且つ、該回転軸２０から離れた位置に配置されており、偏芯部２１と軸方向において重なる位置に荷重負荷部３４を有する少なくとも１つの荷重軸３０〜３３と、を備え、荷重負荷部３４は、回転軸２０の回転に伴って、リング状の治具１６に接触することで、転がり軸受１に偏芯回転荷重を負荷する。これにより、簡単な構成で、転がり軸受１にラジアル方向の偏心回転荷重を与えることができ、転がり軸受１の回転性能や耐久性を簡単に確認することができる。   As described above, in the eccentric rotating component testing apparatus 10 of the present embodiment, the rotating shaft 20 having the eccentric portion 21 that is eccentric with respect to the rotation center X and on which the rolling bearing 1 can be disposed, At least one load shaft 30 to 33 that is arranged in a position parallel to the rotation shaft 20 and away from the rotation shaft 20 and has a load load portion 34 at a position overlapping the eccentric portion 21 in the axial direction. The load loading unit 34 loads the eccentric rotational load on the rolling bearing 1 by contacting the ring-shaped jig 16 as the rotating shaft 20 rotates. Thereby, the eccentric rotational load of a radial direction can be given to the rolling bearing 1 by simple structure, and the rotational performance and durability of the rolling bearing 1 can be confirmed easily.

（第２実施形態）
図５は、本発明の第２実施形態に係る偏芯回転部品用試験装置１０ａを示す。
本実施形態では、回転軸２０は、互いに隣接する複数の偏芯部２１ａ、２１ｂ（本実施形態では、２つ）を有する。各偏芯部２１ａ、２１ｂは、回転中心Ｘに対して偏芯量ｅだけ偏芯しており、互いの偏芯方向が１８０°位相でずれている。各偏芯部２１ａ、２１ｂの周囲には、複数の転がり軸受１ａ、１ｂが配置されると共に、転がり軸受１ａ、１ｂの周囲には、複数のリング状の治具１６ａ、１６ｂが配置される。 (Second Embodiment)
FIG. 5 shows a test apparatus 10a for eccentric rotating parts according to the second embodiment of the present invention.
In the present embodiment, the rotating shaft 20 has a plurality of eccentric portions 21a and 21b (two in this embodiment) that are adjacent to each other. The eccentric portions 21a and 21b are eccentric with respect to the rotation center X by the eccentric amount e, and the eccentric directions of the eccentric portions 21a and 21b are shifted by 180 ° phase. A plurality of rolling bearings 1a and 1b are arranged around the eccentric parts 21a and 21b, and a plurality of ring-shaped jigs 16a and 16b are arranged around the rolling bearings 1a and 1b.

また、本実施形態の偏芯回転部品用試験装置１０ａは、２本の荷重軸３０ａ、３１ａを有する構成とし、各荷重軸３０ａ、３１ａの荷重負荷部３４は、複数の偏芯部２１ａ、２１ｂの両方と軸方向において重なるように位置及び大きさが設定されている。   In addition, the eccentric rotating component testing apparatus 10a of the present embodiment has two load shafts 30a and 31a, and the load load portion 34 of each load shaft 30a and 31a includes a plurality of eccentric portions 21a and 21b. The position and size are set so as to overlap with both in the axial direction.

このように構成された偏芯回転部品用試験装置１０ａでは、回転軸２０が回転すると偏芯部２１ａ、２１ｂが偏芯量ｅで偏芯回転する。これに伴い、転がり軸受１ａ、１ｂ及びリング状の治具１６ａ、１６ｂも偏芯回転する。そして、回転軸２０の回転に伴って、各荷重軸３０ａ、３１ａの荷重負荷部３４が、リング状の治具１６ａ、１６ｂに順に接触することで、荷重軸３０ａ、３１ａの軸たわみにより、転がり軸受１ａ、１ｂに偏芯回転荷重Ｐを負荷することができる。この場合、各転がり軸受１ａ、１ｂには、それぞれ１回転（３６０度）あたり２回の荷重ピークが発生する。   In the eccentric rotating part testing apparatus 10a configured as described above, when the rotary shaft 20 rotates, the eccentric portions 21a and 21b rotate eccentrically by the eccentric amount e. Along with this, the rolling bearings 1a and 1b and the ring-shaped jigs 16a and 16b also rotate eccentrically. As the rotary shaft 20 rotates, the load load portions 34 of the load shafts 30a and 31a come into contact with the ring-shaped jigs 16a and 16b in order, thereby rolling due to the shaft deflection of the load shafts 30a and 31a. An eccentric rotational load P can be applied to the bearings 1a and 1b. In this case, each rolling bearing 1a, 1b has two load peaks per rotation (360 degrees).

また、１本の荷重軸３０ａが転がり軸受１ａ、１ｂに偏芯回転荷重Ｐを負荷する場合には、図６に示すように、各転がり軸受１ａ、１ｂには、それぞれ１回転（３６０度）あたり１回の荷重ピークが発生する。
その他の構成及び作用については、第１実施形態のものと同様である。 When one load shaft 30a applies an eccentric rotational load P to the rolling bearings 1a and 1b, as shown in FIG. 6, each rolling bearing 1a and 1b has one rotation (360 degrees). A load peak occurs once.
Other configurations and operations are the same as those in the first embodiment.

（第３実施形態）
図７は、本発明の第２実施形態に係る偏芯回転部品用試験装置１０ｂを示す。
本実施形態では、回転軸２０側の構成、即ち、複数の転がり軸受１ａ、１ｂ、転がり軸受１ａ、１ｂ、及び、複数のリング状の治具１６ａ、１６ｂの構成については、第２実施形態と同様とする。
一方、２本の荷重軸３０ｂ、３１ｂは、円周方向において近接して配置されており、偏芯部２１ａ、２１ｂと軸方向においてそれぞれ重なる位置に設けられる複数の荷重負荷部３４ａ、３４ｂを有する。即ち、荷重軸３０ｂの荷重負荷部３４ａは、偏芯部２１ａと軸方向において重なる位置に設けられ、荷重軸３１ｂの荷重負荷部３４ｂは、偏芯部２１ｂと軸方向において重なる位置に設けられる。 (Third embodiment)
FIG. 7 shows a test apparatus 10b for eccentric rotating parts according to the second embodiment of the present invention.
In the present embodiment, the configuration on the rotating shaft 20 side, that is, the configuration of the plurality of rolling bearings 1a and 1b, the rolling bearings 1a and 1b, and the plurality of ring-shaped jigs 16a and 16b, is the same as that of the second embodiment. The same shall apply.
On the other hand, the two load shafts 30b and 31b are arranged close to each other in the circumferential direction, and have a plurality of load load portions 34a and 34b provided at positions overlapping with the eccentric portions 21a and 21b in the axial direction, respectively. . That is, the load load portion 34a of the load shaft 30b is provided at a position overlapping the eccentric portion 21a in the axial direction, and the load load portion 34b of the load shaft 31b is provided at a position overlapping the eccentric portion 21b in the axial direction.

このため、本実施形態の偏芯回転部品用試験装置１０ｂでは、回転軸２０が回転すると偏芯部２１ａ、２１ｂの偏芯回転に伴い、転がり軸受１ａ、１ｂ及びリング状の治具１６ａ、１６ｂも偏芯回転する。そして、回転軸２０の回転に伴って、各荷重軸３０ｂ、３１ｂの荷重負荷部３４ａ、３４ｂが、リング状の治具１６ａ、１６ｂに順に接触することで、荷重軸３０ｂ、３１ｂの軸たわみにより、転がり軸受１ａ、１ｂに偏芯回転荷重Ｐをそれぞれ負荷することができる。この場合、図８に示すように、各転がり軸受１ａ、１ｂに発生する１回転（３６０度）あたり１回の荷重ピークが、略１８０度ごとに交互に発生する。
その他の構成及び作用については、第１及び第２実施形態のものと同様である。 For this reason, in the eccentric rotating part testing apparatus 10b of the present embodiment, when the rotating shaft 20 rotates, the rolling bearings 1a and 1b and the ring-shaped jigs 16a and 16b are accompanied with the eccentric rotation of the eccentric portions 21a and 21b. Also rotates eccentrically. As the rotary shaft 20 rotates, the load-loading portions 34a and 34b of the load shafts 30b and 31b come into contact with the ring-shaped jigs 16a and 16b in order, so that the load shafts 30b and 31b are deflected. The eccentric rotational load P can be applied to the rolling bearings 1a and 1b, respectively. In this case, as shown in FIG. 8, a load peak once per rotation (360 degrees) generated in each of the rolling bearings 1a and 1b is alternately generated approximately every 180 degrees.
Other configurations and operations are the same as those in the first and second embodiments.

なお、図９に示す変形例の偏芯回転部品用試験装置１０ｃのように、２本の荷重軸３０ｂ、３１ｂは、１８０度位相がずれた位置に配置されてもよい。この場合、各転がり軸受１ａ、１ｂに発生する１回転（３６０度）あたり１回の荷重ピークが、同時に発生する。   In addition, the two load shafts 30b and 31b may be arrange | positioned in the position which the phase shifted | deviated 180 degree | times like the testing apparatus 10c for eccentric rotation components of the modification shown in FIG. In this case, one load peak occurs simultaneously per one rotation (360 degrees) generated in each of the rolling bearings 1a and 1b.

尚、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良等が可能である。
例えば、上記実施形態では、偏芯回転部品として、転動体と保持器とからなる転がり軸受（所謂、ケージアンドローラ）を用いているが、これに限らず、転動体と保持器の他に、外輪及び内輪の少なくとも一つを含む転がり軸受であってもよい。例えば、転がり軸受が外輪を有する場合、荷重負荷部は、回転軸の回転に伴って、転がり軸受の外輪に接触するようにしてもよい。
また、試験対象である偏芯回転部品は、転がり軸受に限らず、偏芯部の周囲に取り付けられるものであればよく、例えば、ワンウェイクラッチを試験対象としてもよい。 In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
For example, in the above embodiment, a rolling bearing composed of a rolling element and a cage (so-called cage and roller) is used as the eccentric rotating component, but not limited thereto, in addition to the rolling element and the cage, It may be a rolling bearing including at least one of an outer ring and an inner ring. For example, when the rolling bearing has an outer ring, the load load section may come into contact with the outer ring of the rolling bearing as the rotating shaft rotates.
Further, the eccentric rotating component to be tested is not limited to the rolling bearing, but may be any one that can be attached around the eccentric portion. For example, a one-way clutch may be used as the test subject.

１、１ａ、１ｂ 転がり軸受（偏芯回転部品）
１０ 偏芯回転部品用試験装置
１６ リング状の治具
２０ 回転軸
２１ 偏芯部
３０、３０ａ、３０ｂ、３１、３１ａ、３１ｂ、３２、３３ 荷重軸
３４、３４ａ、３４ｂ 荷重負荷部
Ｘ 回転中心 1, 1a, 1b Rolling bearings (eccentric rotating parts)
DESCRIPTION OF SYMBOLS 10 Eccentric rotating component test apparatus 16 Ring-shaped jig | tool 20 Rotating shaft 21 Eccentric part 30, 30a, 30b, 31, 31a, 31b, 32, 33 Load shaft 34, 34a, 34b Load load part X Rotation center

Claims (4)

回転中心に対して偏芯し、周囲に偏芯回転部品を配置可能な少なくとも１つの偏芯部を有する回転軸と、
前記回転軸と平行、且つ、該回転軸から離れた位置に配置されており、前記偏芯部と軸方向において重なる位置に荷重負荷部を有する少なくとも１つの荷重軸と、
を備え、
前記荷重負荷部は、前記回転軸の回転に伴って、前記偏芯回転部品又はその周囲に設けられた治具に接触することで、前記偏芯回転部品に偏芯回転荷重を負荷する偏芯回転部品用試験装置。 A rotating shaft having at least one eccentric portion that is eccentric with respect to the center of rotation and in which an eccentric rotating component can be disposed around;
At least one load shaft that is disposed in a position parallel to the rotation shaft and away from the rotation shaft and having a load load portion at a position overlapping the eccentric portion in the axial direction;
With
The load-loading portion contacts the eccentric rotating component or a jig provided around the eccentric rotating component along with the rotation of the rotating shaft, thereby causing an eccentric rotating load to be applied to the eccentric rotating component. Test equipment for rotating parts. 前記回転軸は、複数の前記偏芯部を有し、
前記荷重負荷部は、複数の前記偏芯部と軸方向において重なる位置に設けられ、
前記荷重負荷部は、複数の前記偏芯部の周囲に配置された複数の前記偏芯回転部品に前記偏芯回転荷重を負荷する請求項１に記載の偏芯回転部品用試験装置。 The rotating shaft has a plurality of the eccentric portions,
The load load portion is provided at a position overlapping with the plurality of eccentric portions in the axial direction,
2. The testing apparatus for eccentric rotating parts according to claim 1, wherein the load loading unit applies the eccentric rotating load to a plurality of the eccentric rotating parts arranged around the plurality of eccentric parts. 前記回転軸は、複数の前記偏芯部を有し、
前記荷重軸は、前記偏芯部と軸方向において重なる位置に設けられる前記荷重負荷部をそれぞれ有する複数の前記荷重軸を備え、
複数の前記荷重負荷部は、複数の前記偏芯部の周囲に配置された複数の前記偏芯回転部品に前記偏芯回転荷重をそれぞれ負荷する請求項１に記載の偏芯回転部品用試験装置。 The rotating shaft has a plurality of the eccentric portions,
The load shaft includes a plurality of the load shafts each having the load load portion provided at a position overlapping with the eccentric portion in the axial direction,
2. The testing apparatus for eccentric rotating parts according to claim 1, wherein the plurality of load loading parts respectively apply the eccentric rotating load to the plurality of eccentric rotating parts arranged around the plurality of eccentric parts. . 前記偏芯回転部品は、転がり軸受である請求項１〜３のいずれか１項に記載の偏芯回転部品用試験装置。   The test apparatus for an eccentric rotating component according to claim 1, wherein the eccentric rotating component is a rolling bearing.
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