JP2019132302A - Jig and assembling method - Google Patents

Jig and assembling method Download PDF

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JP2019132302A
JP2019132302A JP2018012922A JP2018012922A JP2019132302A JP 2019132302 A JP2019132302 A JP 2019132302A JP 2018012922 A JP2018012922 A JP 2018012922A JP 2018012922 A JP2018012922 A JP 2018012922A JP 2019132302 A JP2019132302 A JP 2019132302A
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tapered roller
roller bearing
shim
rotating body
rotation axis
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JP6622331B2 (en
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健司 庭田
kenji Niwata
健司 庭田
政一 木畑
Masakazu Kihata
政一 木畑
裕輝 舟木
Hiroki Funaki
裕輝 舟木
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/06—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing sleeves or bearing races
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Automatic Assembly (AREA)
  • General Details Of Gearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

To promote the reduction or the like of assembling man-hours of a bearing device using a conical roller bearing.SOLUTION: A jig for use in assembling of a bearing device using a tapered roller bearing comprises a main body unit arranged at a first end part side of a first split body of a case, and a withdrawal unit supported to the main body unit. The withdrawal unit is constituted so as to withdraw a rotating body assembled to the first split body to the first end part side in a rotation axial direction together with a first tapered roller bearing, a second tapered roller bearing and a first shim, and the main body unit includes a shim abutment part abutting on the first shim in the rotation axial direction, and a case abutment part abutting on the first end part of the first split body in the rotation axial direction.SELECTED DRAWING: Figure 6

Description

本発明は円錐ころ軸受を用いた軸受装置の組み立て技術に関する。   The present invention relates to a technique for assembling a bearing device using a tapered roller bearing.

回転体を円錐ころ軸受で支持する場合、外輪の変位を防止して円滑な回転を維持するため、円錐ころ軸受の外輪とケースとの間にシムを介在させ、外輪に回転軸方向の圧力を付与する構成が知られている。回転体の回転軸を通る平面でケースが分割された構成の場合、一方の分割体に対して、回転体、円錐ころ軸受及びシムの組立体を組み付けた後、他方の分割体を一方の分割体に組み付ける。しかし、シムの厚みは外輪を加圧する目的で設定されているので、回転体、円錐ころ軸受及びシムの組立体は、そのままでは一方の分割体に装着できない。そこで、回転体に装着された円錐ころ軸受の外輪及びシムに治具によって回転軸方向の圧力を予め付与しておき、これを一方の分割体に組み付けることが提案されている（特許文献１〜４）。   When a rotating body is supported by a tapered roller bearing, a shim is interposed between the outer ring of the tapered roller bearing and the case in order to prevent the outer ring from being displaced and maintain a smooth rotation. The structure to give is known. When the case is divided by a plane passing through the rotation axis of the rotating body, after assembling the rotating body, tapered roller bearing and shim assembly to one divided body, the other divided body is divided into one. Assemble to the body. However, since the thickness of the shim is set for the purpose of pressurizing the outer ring, the rotating body, the tapered roller bearing and the shim assembly cannot be mounted on one of the divided bodies as they are. Therefore, it has been proposed that pressure in the direction of the rotation axis is applied in advance to the outer ring and shim of the tapered roller bearing mounted on the rotating body by a jig, and this is assembled to one of the divided bodies (Patent Documents 1 to 3). 4).

特開２００９−１８５９７０号公報JP 2009-185970 A 特開２００９−３０７４４号公報JP 2009-30744 A 特開２０１０−４３６７２号公報JP 2010-43672 A 特開２０１５−１３２３６４号公報JP-A-2015-132364

特許文献１〜４に開示された方法では、ケースの分割体に、回転体及び円錐ころ軸受の組立体を組み付ける前に、外輪及びシムを治具によって加圧する工程に加えて、分割体に組立体を移載する工程が必要とされる。したがって、工数が増える。また、外輪及びシムを治具によって加圧する工程においては、回転体等を一時的に支持するための台座等も必要となり、組み立て作業空間においてその設置スペースを確保しなければならない点でも不利である。   In the methods disclosed in Patent Documents 1 to 4, before the assembly of the rotating body and the tapered roller bearing is assembled to the divided body of the case, the outer ring and the shim are assembled to the divided body in addition to the step of pressing with a jig. A process of transferring the solid is required. Therefore, man-hours increase. Further, in the process of pressurizing the outer ring and the shim with a jig, a pedestal or the like for temporarily supporting the rotating body is required, which is disadvantageous in that the installation space must be secured in the assembly work space. .

本発明の目的は、円錐ころ軸受を用いた軸受装置の組み立てに関し、工数の削減や組立作業空間の省スペース化を図ることにある。   An object of the present invention relates to the assembly of a bearing device using a tapered roller bearing, and is to reduce man-hours and to save the assembly work space.

本発明によれば、
回転体と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受及び第二の円錐ころ軸受を介して回転自在に支持するケースとを備える軸受装置の組み立てに用いる治具であって、
前記ケースは、前記回転軸方向の第一の端部と第二の端部とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部と、該第一の開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部が形成され、
前記第一の取付部の底部と前記第一の円錐ころ軸受の外輪との間には、環状の第一のシムが設けられ、
前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間には、環状の第二のシムが設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体及び第二の分割体から構成され、
前記治具は、
前記第一の分割体の前記第一の端部側に配置される本体ユニットと、
前記本体ユニットに支持された引き寄せユニットと、を備え、
前記引き寄せユニットは、
前記第一の円錐ころ軸受及び第二の円錐ころ軸受並びに前記第一のシムと共に前記第一の分割体に組み付けられた前記回転体を、前記回転軸方向で前記第一の端部側に引き寄せるように構成され、
前記本体ユニットは、
前記回転軸方向に前記第一のシムと当接するシム当接部と、
前記回転軸方向に前記第一の分割体の前記第一の端部に当接するケース当接部と、を含む、
ことを特徴とする治具が提供される。 According to the present invention,
A jig used for assembling a bearing device comprising: a rotating body; and a case that rotatably supports the rotating body via a first tapered roller bearing and a second tapered roller bearing spaced apart in the direction of the rotation axis. ,
The case includes a first end and a second end in the rotation axis direction,
The first end portion is formed with a first opening for exposing the rotating body and a first attachment portion to which the first tapered roller bearing is attached on the back side of the first opening. ,
The second end portion is formed with a second opening for exposing the rotating body and a second attachment portion to which the second tapered roller bearing is attached on the back side of the second opening. ,
An annular first shim is provided between the bottom of the first mounting portion and the outer ring of the first tapered roller bearing,
An annular second shim is provided between the bottom of the second mounting portion and the outer ring of the second tapered roller bearing,
The case is composed of a first divided body and a second divided body divided by a plane passing through the rotation axis of the rotating body,
The jig is
A main body unit disposed on the first end side of the first divided body;
A drawing unit supported by the main unit,
The attraction unit is
The first tapered roller bearing, the second tapered roller bearing, and the first shim together with the first divided body draw the rotating body toward the first end in the direction of the rotation axis. Configured as
The main unit is
A shim contact portion that contacts the first shim in the rotational axis direction;
A case abutting portion that abuts on the first end of the first divided body in the rotation axis direction,
The jig characterized by this is provided.

また、本発明によれば、
回転体と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受及び第二の円錐ころ軸受を介して回転自在に支持するケースとを備える軸受装置を組み立てる組立方法であって、
前記ケースは、前記回転軸方向の第一の端部と第二の端部とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部と、該第一の開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部が形成され、
前記第一の取付部の底部と前記第一の円錐ころ軸受の外輪との間には、環状の第一のシムが設けられ、
前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間には、環状の第二のシムが設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体及び第二の分割体から構成され、
前記組立方法は、
前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間から外した状態で、前記第一の円錐ころ軸受と前記第二の円錐ころ軸受と前記第一のシムと前記回転体とを前記第一の分割体に組み付ける工程と、
前記回転体を、前記回転軸方向で前記第一の端部側に付勢する工程と、
前記回転体を前記第一の端部側に付勢した状態で、前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間に配置する工程と、を含む、
ことを特徴とする組立方法が提供される。 Moreover, according to the present invention,
An assembly method for assembling a bearing device including a rotating body and a case that rotatably supports the rotating body via a first tapered roller bearing and a second tapered roller bearing that are spaced apart in the direction of the rotation axis,
The case includes a first end and a second end in the rotation axis direction,
The first end portion is formed with a first opening for exposing the rotating body and a first attachment portion to which the first tapered roller bearing is attached on the back side of the first opening. ,
The second end portion is formed with a second opening for exposing the rotating body and a second attachment portion to which the second tapered roller bearing is attached on the back side of the second opening. ,
An annular first shim is provided between the bottom of the first mounting portion and the outer ring of the first tapered roller bearing,
An annular second shim is provided between the bottom of the second mounting portion and the outer ring of the second tapered roller bearing,
The case is composed of a first divided body and a second divided body divided by a plane passing through the rotation axis of the rotating body,
The assembly method is as follows:
With the second shim removed from between the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing, the first tapered roller bearing and the first Assembling two tapered roller bearings, the first shim and the rotating body into the first divided body;
Urging the rotating body toward the first end in the direction of the rotation axis;
In a state where the rotating body is biased toward the first end, the second shim is attached to the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing. Placing between
An assembly method is provided.

本発明によれば、円錐ころ軸受を用いた軸受装置の組み立てに関し、工数の削減や組立作業空間の省スペース化を図ることができる。   According to the present invention, it is possible to reduce the number of man-hours and save the assembly work space with respect to the assembly of the bearing device using the tapered roller bearing.

軸受装置の外観図。The external view of a bearing apparatus. 図１のＩ−Ｉ線に沿う断面図。Sectional drawing which follows the II line | wire of FIG. 図１の軸受装置の組立方法の説明図。Explanatory drawing of the assembly method of the bearing apparatus of FIG. 図１の軸受装置の組立方法の説明図。Explanatory drawing of the assembly method of the bearing apparatus of FIG. 治具の外観図。External view of a jig. 図５の治具の使用例を示す説明図。Explanatory drawing which shows the usage example of the jig | tool of FIG. （Ａ）及び（Ｂ）は図１の軸受装置の組立方法の説明図。(A) And (B) is explanatory drawing of the assembly method of the bearing apparatus of FIG. （Ａ）及び（Ｂ）は別例の説明図。(A) And (B) is explanatory drawing of another example.

図１は組み立て対象の例である軸受装置１の外観図、図２は図１のＩ−Ｉ線に沿う断面図である。軸受装置１は、四輪駆動自動車等の車両の後輪駆動機構を構成する装置であり、特に、差動装置の一部である回転方向変換機構を構成する装置である。すなわち、車両の前部に配置された駆動ユニット（例えばエンジン、変速機）からプロペラシャフトを介して軸受装置１に駆動力が伝達される。軸受装置１は、プロペラシャフトからの車両前後方向の回転軸回りの駆動力を車幅方向の回転軸回りの駆動力に変換し、左右の後輪に伝達する。以下、軸受装置１の構成を説明する。   FIG. 1 is an external view of a bearing device 1 that is an example of an assembly target, and FIG. 2 is a cross-sectional view taken along the line II of FIG. The bearing device 1 is a device that constitutes a rear wheel drive mechanism of a vehicle such as a four-wheel drive automobile, and in particular, is a device that constitutes a rotation direction conversion mechanism that is a part of a differential device. That is, a driving force is transmitted to the bearing device 1 via a propeller shaft from a driving unit (for example, an engine or a transmission) disposed in the front portion of the vehicle. The bearing device 1 converts the driving force around the rotational axis in the vehicle front-rear direction from the propeller shaft into the driving force around the rotational axis in the vehicle width direction and transmits the driving force to the left and right rear wheels. Hereinafter, the configuration of the bearing device 1 will be described.

軸受装置１は、ピニオン軸８と、回転体３とこれらを回転自在に支持するケース２とを備える。ピニオン軸８の一端には上述したプロペラシャフトと連結される継手８ｂが固定され、他端にはピニオンギア８ａが設けられている。軸受装置１を車両に設置した場合、ピニオン軸８の軸方向は車両前後方向とされる。   The bearing device 1 includes a pinion shaft 8, a rotating body 3, and a case 2 that rotatably supports these. A joint 8b connected to the above-described propeller shaft is fixed to one end of the pinion shaft 8, and a pinion gear 8a is provided to the other end. When the bearing device 1 is installed in a vehicle, the axial direction of the pinion shaft 8 is the vehicle longitudinal direction.

回転体３は、回転軸３１と回転軸３１に設けられたリングギア３２とを備える。リングギア３２とピニオンギア８ａとはハイポイドギアを構成する。軸受装置１を車両に設置した場合、回転軸３１の軸方向は車幅方向とされる。破線Ｃは回転軸３１の回転軸心を示している。   The rotating body 3 includes a rotating shaft 31 and a ring gear 32 provided on the rotating shaft 31. The ring gear 32 and the pinion gear 8a constitute a hypoid gear. When the bearing device 1 is installed in a vehicle, the axial direction of the rotary shaft 31 is the vehicle width direction. A broken line C indicates the rotation axis of the rotation shaft 31.

回転軸３１は軸方向に部分的に径が異なる中空の円筒体であり、軸方向で一方の端部３１ａと他方の端部３１ｂとを有する。端部３１ａ、端部３１ｂはクラッチ装置９、９にそれぞれ接続される。その接続のため、端部３１ａの外周面にはスプライン３１１が形成され、端部３１ｂの外周面にはスプライン３１２が形成されている。クラッチ装置９、９の一方は左車輪用、他方は右車輪用とされ、回転体３の回転駆動力を左右の車軸に断続する。その断続を制御することで左右輪の差動機能を実現する。   The rotating shaft 31 is a hollow cylindrical body partially having a different diameter in the axial direction, and has one end 31a and the other end 31b in the axial direction. The end 31a and the end 31b are connected to the clutch devices 9 and 9, respectively. For this connection, a spline 311 is formed on the outer peripheral surface of the end portion 31a, and a spline 312 is formed on the outer peripheral surface of the end portion 31b. One of the clutch devices 9, 9 is for the left wheel and the other is for the right wheel, and the rotational driving force of the rotating body 3 is intermittently connected to the left and right axles. The differential function of the left and right wheels is realized by controlling the intermittent operation.

回転軸３１は軸方向の途中部外周面にはスプライン３１３が形成されている。リングギア３２のボス部内周面には、スプライン３１３と係合するスプライン３２０が形成されている。このスプライン係合により、ピニオン軸８から伝達される駆動力がリングギア３２を介して回転軸３１に伝達される。   The rotary shaft 31 has a spline 313 formed on the outer peripheral surface in the middle of the axial direction. A spline 320 that engages with the spline 313 is formed on the inner peripheral surface of the boss portion of the ring gear 32. Due to this spline engagement, the driving force transmitted from the pinion shaft 8 is transmitted to the rotary shaft 31 via the ring gear 32.

回転体３は、回転軸３１の軸方向に離間した円錐ころ軸受４及び５を介してケース２に回転自在に支持されている。円錐ころ軸受４は端部３１ａ側に位置しており、外輪４１、内輪４２及び外輪４１と内輪４２との間の複数のころ４３を備える。複数のころ４３は保持器で保持されている。円錐ころ軸受５は端部３１ｂ側に位置しており、外輪５１、内輪５２及び外輪５１と内輪５２との間の複数のころ５３を備える。複数のころ５３は保持器で保持されている。   The rotating body 3 is rotatably supported by the case 2 via tapered roller bearings 4 and 5 spaced apart in the axial direction of the rotating shaft 31. The tapered roller bearing 4 is located on the end 31 a side and includes an outer ring 41, an inner ring 42, and a plurality of rollers 43 between the outer ring 41 and the inner ring 42. The plurality of rollers 43 are held by a cage. The tapered roller bearing 5 is located on the end 31 b side, and includes an outer ring 51, an inner ring 52, and a plurality of rollers 53 between the outer ring 51 and the inner ring 52. The plurality of rollers 53 are held by a cage.

リングギア３２のボス部には、円錐ころ軸受４の内輪４２を取り付ける取付部３２１が形成されている。回転軸３１には、円錐ころ軸受５の内輪５２を取り付ける取付部３１４が形成されている。取付部３２１、取付部３１４はいずれも内輪４２又は５２の内周面と端面とが当接するように径を変化させた肩部である。   An attachment portion 321 for attaching the inner ring 42 of the tapered roller bearing 4 is formed on the boss portion of the ring gear 32. A mounting portion 314 for attaching the inner ring 52 of the tapered roller bearing 5 is formed on the rotating shaft 31. Each of the attachment portion 321 and the attachment portion 314 is a shoulder portion whose diameter is changed so that the inner peripheral surface and the end surface of the inner ring 42 or 52 come into contact with each other.

ケース２は、回転軸心Ｃを通る面で分割された分割体２Ａ及び２Ｂから構成されており、これらをボルトで締結することで組み立てられる。分割体２Ａにはピニオン軸８が回転自在に支持されている。回転体３は分割体２Ａと分割体２Ｂとにより回転自在に支持される。   The case 2 is composed of divided bodies 2A and 2B divided by a plane passing through the rotation axis C, and is assembled by fastening them with bolts. A pinion shaft 8 is rotatably supported on the divided body 2A. The rotating body 3 is rotatably supported by the divided body 2A and the divided body 2B.

ケース２には、回転軸３１の軸方向で一方の端部２０と他方の端部２１とを有する。回転軸３１の端部３１ａ、３１ｂとの関係で言うと、端部２０側に端部３１ａが位置し、かつ、端部３１ａはケース２から外側に突出している。また、端部２１側に端部３１ｂが位置し、かつ、端部３１ｂはケース２から外側に突出している。   The case 2 has one end 20 and the other end 21 in the axial direction of the rotating shaft 31. In terms of the relationship with the end portions 31 a and 31 b of the rotating shaft 31, the end portion 31 a is located on the end portion 20 side, and the end portion 31 a protrudes outward from the case 2. Further, the end portion 31 b is located on the end portion 21 side, and the end portion 31 b projects outward from the case 2.

以下、ケース２の端部２０及び２１における構成について説明するが、これらは略半分ずつ、分割体２Ａと２Ｂとで構成されることになる。   Hereinafter, although the structure in the edge parts 20 and 21 of case 2 is demonstrated, these are comprised by the division bodies 2A and 2B about half each.

端部２０には、回転体３（特に回転軸３１の端部３１ａ付近）を露出させる、回転軸３１と同軸で円形の開口部２００が形成されている。開口部２００の奥側（端部２１側）には円錐ころ軸受４を取り付ける取付部２０１が形成されている。取付部２０１は底部２０１ａを有し、回転軸３１と同軸で円形の穴又は凹部である。取付部２０１は円錐ころ軸受４の外輪４１の外周面と端面とが当接するように径を変化させた肩部であり、外輪４１と底部２０１ａとの間には環状のシム６が設けられている。シム６はここでは板状で無端の円環である。開口部２００の径と比較すると、シム６の内径は小さく、外径は大きい。   The end 20 is formed with a circular opening 200 that is coaxial with the rotating shaft 31 and exposes the rotating body 3 (particularly near the end 31a of the rotating shaft 31). A mounting portion 201 for attaching the tapered roller bearing 4 is formed on the back side (end portion 21 side) of the opening 200. The attachment portion 201 has a bottom portion 201a, and is a circular hole or recess that is coaxial with the rotation shaft 31. The mounting portion 201 is a shoulder portion whose diameter is changed so that the outer peripheral surface and the end surface of the outer ring 41 of the tapered roller bearing 4 are in contact with each other, and an annular shim 6 is provided between the outer ring 41 and the bottom portion 201a. Yes. The shim 6 is a plate-like endless ring here. Compared to the diameter of the opening 200, the inner diameter of the shim 6 is small and the outer diameter is large.

端部２１には、回転体３（特に回転軸３１の端部３１ｂ付近）を露出させる、回転軸３１と同軸で円形の開口部２１０が形成されている。開口部２１０の奥側（端部２０側）には円錐ころ軸受５を取り付ける取付部２１１が形成されている。取付部２１１は底部２１１ａを有し、回転軸３１と同軸で円形の穴又は凹部である。取付部２１１は円錐ころ軸受５の外輪５１の外周面と端面とが当接するように径を変化させた肩部であり、外輪５１と底部２１１ａとの間には環状のシム７が設けられている。シム７はここでは板状で無端の円環である。開口部２１０の径と比較すると、シム７の内径は小さく、外径は大きい。   The end 21 is formed with a circular opening 210 that is coaxial with the rotating shaft 31 and exposes the rotating body 3 (particularly near the end 31b of the rotating shaft 31). A mounting portion 211 for attaching the tapered roller bearing 5 is formed on the back side (end portion 20 side) of the opening 210. The attachment portion 211 has a bottom portion 211a, and is a circular hole or recess that is coaxial with the rotation shaft 31. The attachment portion 211 is a shoulder portion whose diameter is changed so that the outer peripheral surface and the end surface of the outer ring 51 of the tapered roller bearing 5 are in contact with each other, and an annular shim 7 is provided between the outer ring 51 and the bottom portion 211a. Yes. The shim 7 is a plate-like endless ring here. Compared to the diameter of the opening 210, the inner diameter of the shim 7 is small and the outer diameter is large.

シム６とシム７との厚さにより、円錐ころ軸受４及び５の各外輪４１、５１には、回転軸３１の軸方向中央部に向かう圧力が予め付与される。これにより、円錐ころ軸受４及び５の各外輪４１、５１と各ころ４３、５３との隙間調整や、ピニオンギア８ａに対するリングギア３２の位置調整を行うことができる。   Due to the thickness of the shim 6 and the shim 7, pressure toward the central portion in the axial direction of the rotary shaft 31 is applied in advance to the outer rings 41 and 51 of the tapered roller bearings 4 and 5. Thereby, the clearance adjustment between each outer ring | wheel 41,51 of each tapered roller bearing 4 and 5 and each roller 43,53 can be performed, and the position adjustment of the ring gear 32 with respect to the pinion gear 8a can be performed.

＜軸受装置の組立方法＞
軸受装置１の組立方法の例について説明する。軸受装置１は、ケース２が回転軸心Ｃを通る面で分割された分割体２Ａと分割体２Ｂとで構成されている。上記の通り、シム６とシム７とは円錐ころ軸受４及び５の各外輪４１、５１に圧力を付与する目的でその厚さが設定されている。このため、例えば、回転体３に円錐ころ軸受４及び５並びにシム６及び７を加圧無しで組み付けた状態では、分割体２Ａ、２Ｂのいずれにもこの組立体を装着することはできない。なぜならこの組立体におけるシム６の外側端面からシム７の外側端面までの距離は、底部２０１ａから底部２１１ａまでの距離よりも長くなってしまうからである。そこで本実施形態では以下の組み付け手順を採用する。 <Assembly method of bearing device>
An example of a method for assembling the bearing device 1 will be described. The bearing device 1 is configured by a divided body 2A and a divided body 2B in which the case 2 is divided by a plane passing through the rotation axis C. As described above, the thickness of the shim 6 and the shim 7 is set for the purpose of applying pressure to the outer rings 41 and 51 of the tapered roller bearings 4 and 5. For this reason, for example, in a state where the tapered roller bearings 4 and 5 and the shims 6 and 7 are assembled to the rotating body 3 without applying pressure, the assembly cannot be mounted on any of the divided bodies 2A and 2B. This is because the distance from the outer end surface of the shim 6 to the outer end surface of the shim 7 in this assembly is longer than the distance from the bottom 201a to the bottom 211a. Therefore, in this embodiment, the following assembly procedure is adopted.

図３を参照して、まず、回転体３に円錐ころ軸受４及び５並びにシム６を組み付けた組立体Ａ１を作成する。シム７は組み付けない。組立体Ａ１を、先に分割体２Ａに搭載して組立体Ａ２とする。分割体２Ａにはには予めピニオン軸８等が組み付けられており、ピニオン軸８の軸方向を上下方向とし、継手８ｂ側が下向きとされる。これにより、図３に示すように組立体Ａ１を水平姿勢で分割体２Ａに載せることができ、作業性を向上できる。図４は組立体Ａ２の平面図である。なお、組立体Ａ１を先に分割体２Ｂに組み付けることも可能であるが、分割体２Ａに組み付ける方が作業性がよい。   Referring to FIG. 3, first, an assembly A <b> 1 in which tapered roller bearings 4 and 5 and shim 6 are assembled to rotating body 3 is created. The shim 7 is not assembled. The assembly A1 is first mounted on the divided body 2A to form an assembly A2. A pinion shaft 8 or the like is preliminarily assembled to the divided body 2A, and the axial direction of the pinion shaft 8 is the vertical direction, and the joint 8b side is downward. Thereby, as shown in FIG. 3, the assembly A1 can be placed on the divided body 2A in a horizontal posture, and workability can be improved. FIG. 4 is a plan view of the assembly A2. The assembly A1 can be assembled to the divided body 2B first, but the workability is better when assembled to the divided body 2A.

この段階でもシム７は組み付けない。シム７を組み付けない結果、その厚さ分だけ余裕ができる。つまり、底部２０１ａから底部２１１ａまでの距離内に、シム６の外側端面から円錐ころ軸受５の外側端面までの距離が収まるので、組立体Ａ１を分割体２Ａに組み付けることができる。逆に言うと、この段階ではシム７を組みつけるための隙間が、円錐ころ軸受５の外輪５１と、底部２１１ａの間にはない。図７（Ａ）はこの段階における回転軸３１の端部３１ｂ側を示す斜視図である。シム７は端部３１ｂにかけられるものの、外輪５１と、底部２１１ａとの間に差し込むことは困難である。   At this stage, the shim 7 is not assembled. As a result of not installing the shim 7, there is a margin for the thickness. That is, since the distance from the outer end surface of the shim 6 to the outer end surface of the tapered roller bearing 5 is within the distance from the bottom 201a to the bottom 211a, the assembly A1 can be assembled to the divided body 2A. Conversely, at this stage, there is no gap for assembling the shim 7 between the outer ring 51 of the tapered roller bearing 5 and the bottom 211a. FIG. 7A is a perspective view showing the end 31b side of the rotating shaft 31 at this stage. Although the shim 7 is put on the end portion 31b, it is difficult to insert the shim 7 between the outer ring 51 and the bottom portion 211a.

次に、シム７を外輪５１と、底部２１１ａとの間に差し込むための隙間を形成する作業を行う。ここでは、図５に示す治具１０を用いる。治具１０は分割体２Ａの端部２０側に配置される。図６は治具１０の使用状態における断面図を示している。まず、治具１０の構成について説明する。   Next, an operation for forming a gap for inserting the shim 7 between the outer ring 51 and the bottom 211a is performed. Here, the jig 10 shown in FIG. 5 is used. The jig 10 is disposed on the end 20 side of the divided body 2A. FIG. 6 shows a cross-sectional view of the jig 10 in use. First, the configuration of the jig 10 will be described.

治具１０は、本体ユニット１２と、本体ユニット１２に支持された引き寄せユニット１１とを備える。概説すると、引き寄せユニット１１により回転体３を分割体２Ａの端部２０側に引き寄せることで、シム７を外輪５１と、底部２１１ａとの間に差し込むための隙間を形成する。   The jig 10 includes a main unit 12 and a drawing unit 11 supported by the main unit 12. In general, a gap for inserting the shim 7 between the outer ring 51 and the bottom 211a is formed by pulling the rotating body 3 toward the end 20 side of the divided body 2A by the pulling unit 11.

引き寄せユニット１１は、回転軸３１の軸方向に延びる軸部１１０と、軸部１１０の一端部に設けられた頭部１１１とを備える。軸部１１０の他端部は外周にねじ１１０ａが形成されたねじ軸を構成している。本実施形態の場合、回転軸３１の端部３１ａは外周面にスプライン３１１が、内周面にねじ３１０が形成された円筒部を構成しており、ねじ１１０ａは、ねじ３１０と螺合する。本実施形態では、ねじ３１０は治具１０のために形成されている。   The pulling unit 11 includes a shaft portion 110 extending in the axial direction of the rotation shaft 31 and a head portion 111 provided at one end portion of the shaft portion 110. The other end portion of the shaft portion 110 constitutes a screw shaft having a screw 110a formed on the outer periphery. In the case of the present embodiment, the end 31 a of the rotating shaft 31 constitutes a cylindrical portion in which a spline 311 is formed on the outer peripheral surface and a screw 310 is formed on the inner peripheral surface, and the screw 110 a is screwed with the screw 310. In the present embodiment, the screw 310 is formed for the jig 10.

本体ユニット１１は、分割体２Ａの端部２０側に配置される。本体ユニット１１は、本体部１３と、可動部１４とを備える。可動部１４は本体部１３に対して回転軸３１の軸方向に変位可能である。   The main unit 11 is arranged on the end 20 side of the divided body 2A. The main body unit 11 includes a main body portion 13 and a movable portion 14. The movable portion 14 can be displaced in the axial direction of the rotation shaft 31 with respect to the main body portion 13.

本体部１３は、内筒部１３０と、外周部１３１とを一体的に備える。内筒部１３０は引き寄せユニット１１の軸部１１０が挿入される筒体である。内筒部１３０の内周面には、軸部１１０を回転自在に支持する軸受１３４が設けられている。内筒部１３０の内周面には、また、回転軸３１のスプライン３１１と係合するスプライン１３１が形成されている。これらのスプライン係合により、治具１０に対する回転軸３１の回り止めを行える。回転軸３１のスプライン３１１はクラッチ９との係合用のスプラインであるが、本実施形態では、治具１０に対する回転軸３１の回り止めとしても活用している。   The main body 13 integrally includes an inner cylinder portion 130 and an outer peripheral portion 131. The inner cylinder portion 130 is a cylinder body into which the shaft portion 110 of the pulling unit 11 is inserted. A bearing 134 that rotatably supports the shaft portion 110 is provided on the inner peripheral surface of the inner cylinder portion 130. A spline 131 that engages with the spline 311 of the rotating shaft 31 is also formed on the inner peripheral surface of the inner cylindrical portion 130. These spline engagements can prevent the rotation shaft 31 from rotating relative to the jig 10. The spline 311 of the rotary shaft 31 is a spline for engagement with the clutch 9. In this embodiment, the spline 311 is also used as a detent for the rotary shaft 31 with respect to the jig 10.

外周部１３１は、シム当接部１３２と支持部１３３とを備える。シム当接部１３２は、シム６の外側端面に当接するよう、回転軸３１の軸方向で端部３１ｂ側へ向かって突出しており、かつ、本実施形態の場合、回転軸心Ｃの回りに全周に渡って形成されている。したがって、シム当接部１３２は円筒状の外形を有している。   The outer peripheral part 131 includes a shim contact part 132 and a support part 133. The shim contact portion 132 protrudes toward the end portion 31b in the axial direction of the rotation shaft 31 so as to contact the outer end surface of the shim 6, and in this embodiment, around the rotation axis C. It is formed over the entire circumference. Therefore, the shim contact portion 132 has a cylindrical outer shape.

支持部１３３は、可動部１４を支持する部分である。本実施形態の場合、可動部１４は、板状でＣ字型を有している。支持部１３３は可動部１４の外形に倣って板状でＣ字型を有している。支持部１３３と可動部１４とは複数の支持軸１５を介して連結されている。支持軸１５は軸部１５０と、軸部１５０の一方端部に設けられた頭部１５１とを備える。軸部１５０の他端部の外周面にはねじが形成されており、可動部１４のねじ穴１４１に螺合して両者が固定される。軸部１５０は支持部１３０を貫通しており、かつ、支持部１３０に対して軸方向にスライド自在とされている。頭部１５１は軸部１５０のスライドのストッパとなっており、支持部１３０の表面に当接する。以上の構成により、可動部１４は複数の支持軸１５の案内により、支持部１３３に対して回転軸３１の軸方向に変位可能である。   The support part 133 is a part that supports the movable part 14. In the case of this embodiment, the movable part 14 is plate-shaped and has a C-shape. The support part 133 has a plate shape and a C-shape following the outer shape of the movable part 14. The support part 133 and the movable part 14 are connected via a plurality of support shafts 15. The support shaft 15 includes a shaft portion 150 and a head portion 151 provided at one end portion of the shaft portion 150. A screw is formed on the outer peripheral surface of the other end portion of the shaft portion 150 and is screwed into the screw hole 141 of the movable portion 14 to be fixed. The shaft portion 150 penetrates the support portion 130 and is slidable in the axial direction with respect to the support portion 130. The head portion 151 serves as a stopper for sliding the shaft portion 150 and abuts against the surface of the support portion 130. With the above configuration, the movable portion 14 can be displaced in the axial direction of the rotation shaft 31 with respect to the support portion 133 by guiding the support shafts 15.

可動部１４の端面１４０は、分割体２Ａの端部２０に当接するケース当接部を構成している。以下、端面１４０のことをケース当接部１４０という。   The end surface 140 of the movable portion 14 constitutes a case contact portion that contacts the end portion 20 of the divided body 2A. Hereinafter, the end surface 140 is referred to as a case contact portion 140.

本実施形態の場合、支持部１３３と可動部１４との間には弾性部材１６が設けられており、弾性部材１６は可動部１４を支持部１３３から離間するように付勢している。本実施形態の場合、弾性部材１６はコイルばねであり、支持軸１５毎に設けられている。軸部１５０はコイルばねである弾性部材１６を挿通しており、弾性部材１６の支持部材としても機能している。   In the present embodiment, an elastic member 16 is provided between the support portion 133 and the movable portion 14, and the elastic member 16 biases the movable portion 14 away from the support portion 133. In this embodiment, the elastic member 16 is a coil spring and is provided for each support shaft 15. The shaft portion 150 is inserted through the elastic member 16 that is a coil spring, and also functions as a support member for the elastic member 16.

治具１０を用いた組立方法について説明する。図６に示すように、治具１０は端部２０の側に配置され、引き寄せユニット１１のねじ１１０ａが回転軸３１のねじ３１０に螺合される。矢印Ｄ１で示すように引き寄せユニット１１を回転軸心Ｃの回りで締め付け方向に回転する。回転軸３１は、スプライン１３１、３１１の係合で回り止めがされているため、ねじ込みが進むと、引き寄せユニット１１と回転軸３１とが近付く方向に力が働く。この過程で、シム当接部１３２はシム６の外側端面に当接し、シム６を介して外輪４１に矢印Ｄ２で示すように圧力がかかる。   An assembly method using the jig 10 will be described. As shown in FIG. 6, the jig 10 is disposed on the end 20 side, and the screw 110 a of the drawing unit 11 is screwed to the screw 310 of the rotating shaft 31. As shown by the arrow D1, the pulling unit 11 is rotated around the rotation axis C in the tightening direction. Since the rotation shaft 31 is prevented from rotating by the engagement of the splines 131 and 311, when the screwing proceeds, a force acts in a direction in which the drawing unit 11 and the rotation shaft 31 approach each other. In this process, the shim contact portion 132 contacts the outer end surface of the shim 6, and pressure is applied to the outer ring 41 through the shim 6 as indicated by an arrow D2.

また、矢印Ｄ３で示すようにケース当接部１４０が分割体２Ａの端部２０に当接する。このため、引き寄せユニット１１を締め付け方向に回転していくと、回転軸３１が矢印Ｄ３で示すように、分割体２Ａに対してその軸方向で端部２０側に変位する。この結果、端部２１側において、円錐ころ軸受５の外輪５１と、底部２１１ａとの間にシム７を差し込む隙間が形成されていく。このため、図７（Ａ）の状態から図７（Ｂ）に示すように、シム７を外輪５１と、底部２１１ａとの間に配置することができる。   Further, as indicated by an arrow D3, the case contact portion 140 contacts the end portion 20 of the divided body 2A. For this reason, when the pulling unit 11 is rotated in the tightening direction, the rotating shaft 31 is displaced toward the end 20 in the axial direction with respect to the divided body 2A as indicated by an arrow D3. As a result, a gap into which the shim 7 is inserted is formed between the outer ring 51 of the tapered roller bearing 5 and the bottom 211a on the end 21 side. For this reason, as shown in FIG. 7B from the state of FIG. 7A, the shim 7 can be disposed between the outer ring 51 and the bottom portion 211a.

ケース当接部１４０が分割体２Ａの端部２０に当接している間、弾性部材１６の弾性変形によって、ケース当接部１４０が分割体２Ａの端部２０に過大な荷重が作用することを防止できる。また、ケース当接部１４０はＣ字型で帯状の面であるため、応力が集中することを防止し、分割体２Ａの端部２０に過大な荷重が作用することを防止することができる。   While the case contact portion 140 is in contact with the end portion 20 of the divided body 2A, an excessive load acts on the end portion 20 of the divided body 2A due to the elastic deformation of the elastic member 16. Can be prevented. Moreover, since the case contact part 140 is a C-shaped and belt-like surface, it is possible to prevent stress from being concentrated and to prevent an excessive load from acting on the end part 20 of the divided body 2A.

シム７を外輪５１と、底部２１１ａとの間に配置したのち、分割体２Ｂを分割体２Ａに組み付け、両者をボルトで締結する。その後、治具１０を取り外して軸受装置１の組立作業が終了する。   After the shim 7 is disposed between the outer ring 51 and the bottom 211a, the divided body 2B is assembled to the divided body 2A, and both are fastened with bolts. Then, the jig | tool 10 is removed and the assembly operation | work of the bearing apparatus 1 is complete | finished.

以上のように本実施形態では、分割体２Ａ上で組立体２Ａの組み付け、シム６を介した外輪４１への加圧、シム７の組み付けを行うことができる。外輪への加圧作業を、別の台座等を用いて行う必要がなく、台座等を用いた場合に比べて、工数の削減や組立作業空間の省スペース化を図ることができる。また、組み立て作業の大部分を、分割体２Ａの端部２０の側から行うことができ、作業者が手作業で組付作業を行う場合に、その作業性を向上することができる。   As described above, in this embodiment, the assembly 2A can be assembled on the divided body 2A, the outer ring 41 can be pressurized via the shim 6, and the shim 7 can be assembled. It is not necessary to press the outer ring using another pedestal or the like, and man-hours can be reduced and the assembly work space can be saved as compared with the case where a pedestal or the like is used. In addition, most of the assembly work can be performed from the end 20 side of the divided body 2A, and when the worker performs the assembly work manually, the workability can be improved.

＜他の実施形態＞
上記実施形態では、ケース当接部１４０を可動部１４に形成し、本体部１３に対して変位可能な構成としたが、変位不能に固定された構成としてもよい。但し、この場合、上述した弾性部材１６の変形による緩衝作用がないため、ケース当接部１４０と分割体２Ａの端部との当接面積がより広くなるようにケース当接部１４０を形成し、分割体２Ａの一部に対して応力が集中することがないようにすることが好ましい。 <Other embodiments>
In the above-described embodiment, the case contact portion 140 is formed on the movable portion 14 and can be displaced with respect to the main body portion 13. However, in this case, since there is no buffering effect due to the deformation of the elastic member 16 described above, the case contact portion 140 is formed so that the contact area between the case contact portion 140 and the end portion of the divided body 2A becomes wider. It is preferable that stress is not concentrated on a part of the divided body 2A.

上記実施形態では、引き寄せユニット１１のねじ１１０ａに対する回転軸３１の締結部位をねじ３１０としたが、図８（Ａ）に示すように別の治具１７を利用してもよい。治具１７は回転軸３１の内部を挿通する軸１７０の一方端部に頭部１７１が他方端部にねじ穴１７０ａが設けられた構成である。頭部１７１は回転軸３１の端部３１ｂと当接するストッパとなり、ねじ穴１７０に引き寄せユニット１１のねじ１１０ａを螺合する。部品点数が増えるが、回転軸３１にねじ３１０を形成する必要がない。   In the above embodiment, the fastening portion of the rotating shaft 31 with respect to the screw 110a of the pulling unit 11 is the screw 310, but another jig 17 may be used as shown in FIG. The jig 17 has a configuration in which a head 171 is provided at one end of a shaft 170 that passes through the inside of the rotary shaft 31 and a screw hole 170a is provided at the other end. The head 171 serves as a stopper that comes into contact with the end 31 b of the rotary shaft 31, and the screw 110 a of the pulling unit 11 is screwed into the screw hole 170. Although the number of parts increases, it is not necessary to form the screw 310 on the rotating shaft 31.

上記実施形態では、引き寄せユニット１１と回転軸３１との連結及び引き寄せにねじ構造を用いたが、ねじ構造以外であってもよい。引き寄せユニット１１と回転軸３１との連結は、ねじ以外に径方向にピン等を差し込むような係合構造であってもよい。引き寄せはトグルクランプ等、他の機構やシリンダ等のアクチュエータを用いてもよい。   In the above embodiment, the screw structure is used for the connection and drawing between the pulling unit 11 and the rotary shaft 31, but other than the screw structure may be used. The connection between the pulling unit 11 and the rotary shaft 31 may be an engagement structure in which a pin or the like is inserted in the radial direction in addition to the screw. For the pulling, another mechanism such as a toggle clamp or an actuator such as a cylinder may be used.

上記実施形態では、回転軸３１を分割体２Ａの端部２０側へ引き寄せる構成としたが、引き寄せに限られず、回転軸３１を端部３１ｂ側から端部２０側へ付勢できればよい。図８（Ｂ）はその一例を示す。同図の例では、端部２０にストッパ１９を配置する一方、回転軸３１の端部３１ｂに油圧シリンダ１８を配置し、油圧シリンダ１８を伸長して回転軸３１を分割体２Ａに対して端部２０側に変位させている。   In the said embodiment, although it was set as the structure which draws the rotating shaft 31 to the edge part 20 side of 2 A of division bodies, it is not restricted to drawing, The rotating shaft 31 should just be urged | biased from the edge part 31b side to the edge part 20 side. FIG. 8B shows an example. In the example of the figure, the stopper 19 is disposed at the end 20, while the hydraulic cylinder 18 is disposed at the end 31 b of the rotating shaft 31, and the hydraulic cylinder 18 is extended to extend the rotating shaft 31 with respect to the divided body 2A. It is displaced to the part 20 side.

上記実施形態では、軸受装置１として、差動装置の一部である回転方向変換機構を構成する装置を例示したが、本発明は円錐ころ軸受により回転体をケースに支持する装置に広く適用可能である。   In the above embodiment, the bearing device 1 is exemplified by a device that constitutes a rotation direction conversion mechanism that is a part of the differential device. However, the present invention can be widely applied to devices that support a rotating body on a case with a tapered roller bearing. It is.

＜実施形態のまとめ＞
１．上記実施形態の治具(例えば10)は、
回転体(例えば3)と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受(例えば4)及び第二の円錐ころ軸受(例えば5)を介して回転自在に支持するケース(例えば2)とを備える軸受装置(例えば1)の組み立てに用いる治具(例えば10)であって、
前記ケースは、前記回転軸方向の第一の端部(例えば20)と第二の端部(例えば21)とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部(例えば200)と、該第一開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部(例えば201)が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部(例えば210)と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部(例えば211)が形成され、
前記第一の取付部の底部(例えば201a)と前記第一の円錐ころ軸受の外輪(例えば41)との間には、環状の第一のシム(例えば6)が設けられ、
前記第二の取付部の底部(例えば211a)と前記第二の円錐ころ軸受の外輪(例えば51)との間には、環状の第二のシム(例えば7)が設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体(例えば2A)及び第二の分割体(例えば2B)から構成され、
前記治具は、
前記第一の分割体の前記第一の端部側に配置される本体ユニット(例えば11)と、
前記本体ユニットに支持された引き寄せユニット(例えば12)と、を備え、
前記引き寄せユニットは、
前記第一の円錐ころ軸受及び第二の円錐ころ軸受並びに前記第一のシムと共に前記第一の分割体に組み付けられた前記回転体を、前記回転軸方向で前記第一の端部側に引き寄せるように構成され、
前記本体ユニットは、
前記回転軸方向に前記第一のシムと当接するシム当接部(例えば132)と、
前記回転軸方向に前記第一の分割体の前記第一の端部に当接するケース当接部(例えば140)と、を含む。 <Summary of Embodiment>
1. The jig of the above embodiment (for example, 10) is
A rotating body (e.g. 3) and a case (e.g. a rotatable supporting body via a first tapered roller bearing (e.g. 4) and a second tapered roller bearing (e.g. 5) spaced apart in the direction of the rotational axis (e.g. 2) and a jig (for example, 10) used for assembling a bearing device (for example, 1),
The case includes a first end (for example, 20) and a second end (for example, 21) in the rotation axis direction,
A first opening (for example, 200) that exposes the rotating body, and a first mounting portion to which the first tapered roller bearing is mounted on the back side of the first opening are exposed to the first end. (E.g. 201) is formed,
A second opening (for example, 210) that exposes the rotating body and a second attachment to which the second tapered roller bearing is attached on the back side of the second opening are exposed to the second end. Part (for example 211) is formed,
An annular first shim (for example, 6) is provided between the bottom of the first mounting portion (for example, 201a) and the outer ring (for example, 41) of the first tapered roller bearing,
An annular second shim (for example, 7) is provided between the bottom of the second mounting portion (for example, 211a) and the outer ring (for example, 51) of the second tapered roller bearing,
The case is composed of a first divided body (for example, 2A) and a second divided body (for example, 2B) divided by a plane passing through the rotation axis of the rotating body,
The jig is
A body unit (for example, 11) disposed on the first end side of the first divided body;
A drawing unit (for example, 12) supported by the main unit, and
The attraction unit is
The first tapered roller bearing, the second tapered roller bearing, and the first shim together with the first divided body draw the rotating body toward the first end in the direction of the rotation axis. Configured as
The main unit is
A shim contact portion (for example, 132) that contacts the first shim in the rotational axis direction;
A case contact portion (for example, 140) that contacts the first end portion of the first divided body in the rotation axis direction.

この実施形態によれば、前記第一の分割体で前記第一のシム及び前記第一の円錐ころ軸受けの外輪を加圧しつつ、前記回転体を前記第一の端部側に引き寄せることができる。この結果、前記第二の端部において、前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間に、前記第二のシムを挿入する隙間を形成することができる。こうして、前記第一の分割体上で組み立てを行うことができるため、工数の削減や組立作業空間の省スペース化を図ることができる。   According to this embodiment, it is possible to draw the rotating body toward the first end while pressing the outer ring of the first shim and the first tapered roller bearing with the first divided body. . As a result, a gap for inserting the second shim can be formed at the second end portion between the bottom portion of the second mounting portion and the outer ring of the second tapered roller bearing. Thus, since the assembly can be performed on the first divided body, the man-hours can be reduced and the assembly work space can be saved.

２．上記実施形態では、
前記引き寄せユニットは、ねじ(例えば110a,310,170a)の締め付けによって前記回転体を引き寄せる機構である。 2. In the above embodiment,
The pulling unit is a mechanism that pulls the rotating body by tightening screws (for example, 110a, 310, 170a).

この実施形態によれば、比較的簡単な構成で前記回転体の引き寄せ機構を構築することができる。   According to this embodiment, the pulling mechanism of the rotating body can be constructed with a relatively simple configuration.

３．上記実施形態では、
前記引き寄せユニットは、前記回転軸心と同軸回りに回転自在に前記本体ユニットに支持され、かつ、前記回転体の一端部(例えば31a)に形成されたねじ(例えば310)と螺合する。 3. In the above embodiment,
The pulling unit is supported by the body unit so as to be rotatable about the same axis as the rotation axis, and is screwed with a screw (for example, 310) formed at one end (for example, 31a) of the rotating body.

この実施形態によれば、作業者が前記第一の分割体の前記一端部側から組付作業を行い易くすることができる。   According to this embodiment, an operator can easily perform the assembly work from the one end side of the first divided body.

４．上記実施形態では、
前記回転体の前記一端部は、円筒部であり、
前記円筒部の内周面に前記ねじ(例えば310)が形成され、
前記円筒部の外周面にスプライン(例えば311)が形成され、
前記本体ユニットは、前記スプラインと係合するスプライン(例えば131)を有する。 4). In the above embodiment,
The one end of the rotating body is a cylindrical part,
The screw (for example, 310) is formed on the inner peripheral surface of the cylindrical portion,
Splines (for example, 311) are formed on the outer peripheral surface of the cylindrical portion,
The main unit has a spline (eg, 131) that engages with the spline.

この実施形態によれば、前記本体ユニットによって前記回転体の回り止めを行うことができ、作業者は前記引き寄せユニットを回転させるだけで前記回転体を引き寄せることができる。   According to this embodiment, the rotating body can be prevented from being rotated by the main body unit, and an operator can draw the rotating body only by rotating the pulling unit.

５．上記実施形態では、
前記本体ユニットは、
前記シム当接部を有すると共に前記引き寄せユニットを支持する本体部(例えば13)と、
前記ケース当接部を有し、前記本体部に対して前記回転軸方向に変位可能に前記本体部に取り付けられた可動部(例えば14)と、
前記本体部と前記可動部との間に設けられた弾性部材(例えば16)と、を含む。 5). In the above embodiment,
The main unit is
A main body (e.g., 13) having the shim abutting portion and supporting the pulling unit;
A movable portion (e.g., 14) attached to the main body so as to be displaceable in the direction of the rotation axis with respect to the main body, the case contact portion;
And an elastic member (for example, 16) provided between the main body portion and the movable portion.

この実施形態によれば、前記ケース当接部が前記第一の分割体に当接する圧力が過大になることを防止して、前記第一の分割体が損傷することを防止できる。   According to this embodiment, it can prevent that the pressure which the said case contact part contact | abuts to said 1st division body becomes excessive, and can prevent that said 1st division body is damaged.

６．上記実施形態の組立方法は、
回転体(例えば3)と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受(例えば4)及び第二の円錐ころ軸受(例えば5)を介して回転自在に支持するケース(例えば2)とを備える軸受装置(例えば1)を組み立てる組立方法であって、
前記ケースは、前記回転軸方向の第一の端部(例えば20)と第二の端部(例えば21)とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部(例えば200)と、該第一の開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部(例えば201)が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部(例えば210)と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部(例えば211)が形成され、
前記第一の取付部の底部(例えば201a)と前記第一の円錐ころ軸受の外輪(例えば41)との間には、環状の第一のシム(例えば6)が設けられ、
前記第二の取付部の底部(例えば211a)と前記第二の円錐ころ軸受の外輪(例えば51)との間には、環状の第二のシム(例えば7)が設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体(例えば2A)及び第二の分割体(例えば2B)から構成され、
前記組立方法は、
前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間から外した状態で、前記第一の円錐ころ軸受と前記第二の円錐ころ軸受と前記第一のシムと前記回転体とを前記第一の分割体に組み付ける工程(例えば図3,4)と、
前記回転体を、前記回転軸方向で前記第一の端部側に付勢する工程(例えば図6)と、
前記回転体を前記第一の端部側に付勢した状態で、前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間に配置する工程(例えば図7)と、を含む。 6). The assembly method of the above embodiment is
A rotating body (e.g. 3) and a case (e.g. a rotatable supporting body via a first tapered roller bearing (e.g. 4) and a second tapered roller bearing (e.g. 5) spaced apart in the direction of the rotational axis (e.g. 2) and an assembly method for assembling a bearing device (for example, 1) comprising:
The case includes a first end (for example, 20) and a second end (for example, 21) in the rotation axis direction,
A first opening (e.g., 200) that exposes the rotating body and a first attachment at which the first tapered roller bearing is attached to the back side of the first opening at the first end. Part (e.g. 201) is formed,
A second opening (for example, 210) that exposes the rotating body and a second attachment to which the second tapered roller bearing is attached on the back side of the second opening are exposed to the second end. Part (for example 211) is formed,
An annular first shim (for example, 6) is provided between the bottom of the first mounting portion (for example, 201a) and the outer ring (for example, 41) of the first tapered roller bearing,
An annular second shim (for example, 7) is provided between the bottom of the second mounting portion (for example, 211a) and the outer ring (for example, 51) of the second tapered roller bearing,
The case is composed of a first divided body (for example, 2A) and a second divided body (for example, 2B) divided by a plane passing through the rotation axis of the rotating body,
The assembly method is as follows:
With the second shim removed from between the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing, the first tapered roller bearing and the first Assembling two tapered roller bearings, the first shim and the rotating body to the first divided body (for example, FIGS. 3 and 4);
Urging the rotating body toward the first end in the direction of the rotation axis (for example, FIG. 6);
In a state where the rotating body is biased toward the first end, the second shim is attached to the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing. (For example, FIG. 7).

この実施形態によれば、前記第一の分割体で前記第一のシム及び前記第一の円錐ころ軸受けの外輪を加圧しつつ、前記回転体を前記第一の端部側に変位させることができる。この結果、前記第二の端部において、前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間に、前記第二のシムを挿入する隙間を形成することができる。こうして、前記第一の分割体上で組み立てを行うことができるため、工数の削減や組立作業空間の省スペース化を図ることができる。   According to this embodiment, the rotary member can be displaced toward the first end while pressing the first shim and the outer ring of the first tapered roller bearing with the first divided body. it can. As a result, a gap for inserting the second shim can be formed at the second end portion between the bottom portion of the second mounting portion and the outer ring of the second tapered roller bearing. Thus, since the assembly can be performed on the first divided body, the man-hours can be reduced and the assembly work space can be saved.

１ 軸受装置、２ ケース、２Ａ 分割体、２Ｂ 分割体、３ 回転体、１０ 治具、１３２ シム当接部、１４０ ケース当接部 DESCRIPTION OF SYMBOLS 1 Bearing apparatus, 2 case, 2A division body, 2B division body, 3 rotary body, 10 jig | tool, 132 shim contact part, 140 case contact part

Claims (6)

回転体と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受及び第二の円錐ころ軸受を介して回転自在に支持するケースとを備える軸受装置の組み立てに用いる治具であって、
前記ケースは、前記回転軸方向の第一の端部と第二の端部とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部と、該第一の開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部が形成され、
前記第一の取付部の底部と前記第一の円錐ころ軸受の外輪との間には、環状の第一のシムが設けられ、
前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間には、環状の第二のシムが設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体及び第二の分割体から構成され、
前記治具は、
前記第一の分割体の前記第一の端部側に配置される本体ユニットと、
前記本体ユニットに支持された引き寄せユニットと、を備え、
前記引き寄せユニットは、
前記第一の円錐ころ軸受及び第二の円錐ころ軸受並びに前記第一のシムと共に前記第一の分割体に組み付けられた前記回転体を、前記回転軸方向で前記第一の端部側に引き寄せるように構成され、
前記本体ユニットは、
前記回転軸方向に前記第一のシムと当接するシム当接部と、
前記回転軸方向に前記第一の分割体の前記第一の端部に当接するケース当接部と、を含む、
ことを特徴とする治具。 A jig used for assembling a bearing device comprising: a rotating body; and a case that rotatably supports the rotating body via a first tapered roller bearing and a second tapered roller bearing spaced apart in the direction of the rotation axis. ,
The case includes a first end and a second end in the rotation axis direction,
The first end portion is formed with a first opening for exposing the rotating body and a first attachment portion to which the first tapered roller bearing is attached on the back side of the first opening. ,
The second end portion is formed with a second opening for exposing the rotating body and a second attachment portion to which the second tapered roller bearing is attached on the back side of the second opening. ,
An annular first shim is provided between the bottom of the first mounting portion and the outer ring of the first tapered roller bearing,
An annular second shim is provided between the bottom of the second mounting portion and the outer ring of the second tapered roller bearing,
The case is composed of a first divided body and a second divided body divided by a plane passing through the rotation axis of the rotating body,
The jig is
A main body unit disposed on the first end side of the first divided body;
A drawing unit supported by the main unit,
The attraction unit is
The first tapered roller bearing, the second tapered roller bearing, and the first shim together with the first divided body draw the rotating body toward the first end in the direction of the rotation axis. Configured as
The main unit is
A shim contact portion that contacts the first shim in the rotational axis direction;
A case abutting portion that abuts on the first end of the first divided body in the rotation axis direction,
A jig characterized by that. 請求項１に記載の治具であって、
前記引き寄せユニットは、ねじの締め付けによって前記回転体を引き寄せる機構である、
ことを特徴とする治具。 The jig according to claim 1,
The pulling unit is a mechanism that pulls the rotating body by tightening a screw;
A jig characterized by that. 請求項１に記載の治具であって、
前記引き寄せユニットは、前記回転軸心と同軸回りに回転自在に前記本体ユニットに支持され、かつ、前記回転体の一端部に形成されたねじと螺合する、
ことを特徴とする治具。 The jig according to claim 1,
The pulling unit is supported by the main body unit so as to be rotatable about the same axis as the rotation axis, and is screwed with a screw formed at one end of the rotating body.
A jig characterized by that. 請求項３に記載の治具であって、
前記回転体の前記一端部は、円筒部であり、
前記円筒部の内周面に前記ねじが形成され、
前記円筒部の外周面にスプラインが形成され、
前記本体ユニットは、前記スプラインと係合するスプラインを有する、
ことを特徴とする治具。 The jig according to claim 3,
The one end of the rotating body is a cylindrical part,
The screw is formed on the inner peripheral surface of the cylindrical portion,
Splines are formed on the outer peripheral surface of the cylindrical portion,
The main unit has a spline that engages with the spline.
A jig characterized by that. 請求項１乃至請求項４のいずれか一項に記載の治具であって、
前記本体ユニットは、
前記シム当接部を有すると共に前記引き寄せユニットを支持する本体部と、
前記ケース当接部を有し、前記本体部に対して前記回転軸方向に変位可能に前記本体部に取り付けられた可動部と、
前記本体部と前記可動部との間に設けられた弾性部材と、を含む、
ことを特徴とする治具。 The jig according to any one of claims 1 to 4,
The main unit is
A main body having the shim contact portion and supporting the pulling unit;
A movable part having the case contact part and attached to the main body part so as to be displaceable in the direction of the rotation axis with respect to the main body part;
An elastic member provided between the main body portion and the movable portion,
A jig characterized by that. 回転体と、前記回転体を回転軸方向に離間した第一の円錐ころ軸受及び第二の円錐ころ軸受を介して回転自在に支持するケースとを備える軸受装置を組み立てる組立方法であって、
前記ケースは、前記回転軸方向の第一の端部と第二の端部とを備え、
前記第一の端部には、前記回転体を露出させる第一の開口部と、該第一の開口部の奥側において前記第一の円錐ころ軸受が取り付けられる第一の取付部が形成され、
前記第二の端部には、前記回転体を露出させる第二の開口部と、該第二の開口部の奥側において前記第二の円錐ころ軸受が取り付けられる第二の取付部が形成され、
前記第一の取付部の底部と前記第一の円錐ころ軸受の外輪との間には、環状の第一のシムが設けられ、
前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間には、環状の第二のシムが設けられ、
前記ケースは、前記回転体の回転軸心を通る面で分割された第一の分割体及び第二の分割体から構成され、
前記組立方法は、
前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間から外した状態で、前記第一の円錐ころ軸受と前記第二の円錐ころ軸受と前記第一のシムと前記回転体とを前記第一の分割体に組み付ける工程と、
前記回転体を、前記回転軸方向で前記第一の端部側に付勢する工程と、
前記回転体を前記第一の端部側に付勢した状態で、前記第二のシムを前記第一の分割体の前記第二の取付部の底部と前記第二の円錐ころ軸受の外輪との間に配置する工程と、を含む、
ことを特徴とする組立方法。 An assembly method for assembling a bearing device including a rotating body and a case that rotatably supports the rotating body via a first tapered roller bearing and a second tapered roller bearing that are spaced apart in the direction of the rotation axis,
The case includes a first end and a second end in the rotation axis direction,
The first end portion is formed with a first opening for exposing the rotating body and a first attachment portion to which the first tapered roller bearing is attached on the back side of the first opening. ,
The second end portion is formed with a second opening for exposing the rotating body and a second attachment portion to which the second tapered roller bearing is attached on the back side of the second opening. ,
An annular first shim is provided between the bottom of the first mounting portion and the outer ring of the first tapered roller bearing,
An annular second shim is provided between the bottom of the second mounting portion and the outer ring of the second tapered roller bearing,
The case is composed of a first divided body and a second divided body divided by a plane passing through the rotation axis of the rotating body,
The assembly method is as follows:
With the second shim removed from between the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing, the first tapered roller bearing and the first Assembling two tapered roller bearings, the first shim and the rotating body into the first divided body;
Urging the rotating body toward the first end in the direction of the rotation axis;
In a state where the rotating body is biased toward the first end, the second shim is attached to the bottom of the second mounting portion of the first divided body and the outer ring of the second tapered roller bearing. Placing between
An assembling method characterized by the above.
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