JP4552951B2 - Manufacturing method of bearing device - Google Patents

Manufacturing method of bearing device Download PDF

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Publication number
JP4552951B2
JP4552951B2 JP2007028283A JP2007028283A JP4552951B2 JP 4552951 B2 JP4552951 B2 JP 4552951B2 JP 2007028283 A JP2007028283 A JP 2007028283A JP 2007028283 A JP2007028283 A JP 2007028283A JP 4552951 B2 JP4552951 B2 JP 4552951B2
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Prior art keywords
inner ring
jig
press
ring
hub
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JP2008190692A (en
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達男 若林
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NSK Ltd
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NSK Ltd
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    • 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
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • F16C35/0635—Fixing them on the shaft the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、軸受装置の製造方法に関し、より詳細には自動車等の車輪を回転自在に支持する車輪用軸受装置の製造方法に関する。   The present invention relates to a method of manufacturing a bearing device, and more particularly to a method of manufacturing a wheel bearing device that rotatably supports a wheel of an automobile or the like.

従来の車輪用軸受装置として、図７に示すものが提案されている（例えば特許文献１参照）。   As a conventional wheel bearing device, one shown in FIG. 7 has been proposed (see, for example, Patent Document 1).

図７に示す車輪用軸受装置は、内周に複列の転走面３を形成した外方部材１と、これら各転走面３に対向する転走面４を形成した内方部材２と、これら外方部材１および内方部材２の転走面３，４間に介在した複列の転動体５とで構成される。   The wheel bearing device shown in FIG. 7 includes an outer member 1 in which double-row rolling surfaces 3 are formed on the inner periphery, and an inner member 2 in which rolling surfaces 4 that face the respective rolling surfaces 3 are formed. The outer member 1 and the inner member 2 are composed of double-row rolling elements 5 interposed between the rolling surfaces 3 and 4.

外方部材１は固定側の部材となるものであって、車体取付フランジ１ａを外周に有し、全体が一体の部品とされている。車体取付フランジ１ａは、車体（図示せず）に設置されたナックルにボルト（図示せず）で締結される。   The outer member 1 is a member on the fixed side, has a vehicle body mounting flange 1a on the outer periphery, and is formed as an integral part as a whole. The vehicle body mounting flange 1a is fastened to a knuckle installed on the vehicle body (not shown) with a bolt (not shown).

内方部材２は回転側の部材となるものであって、外周に車輪取付用のフランジ９ａを有するハブ輪９と、このハブ輪９のインボード側（車両の中央寄りとなる側）端部の外周に嵌合した内輪１０とでなり、複列の転走面４のうちアウトボード側（車両の車幅方向外側寄りとなる側）列の転走面４がハブ輪９に、インボード側列の転走面４が内輪１０にそれぞれ形成されている。   The inner member 2 is a member on the rotation side, and has a hub wheel 9 having a wheel mounting flange 9a on the outer periphery thereof, and an inboard side (side closer to the center of the vehicle) end portion of the hub wheel 9 Of the double-row rolling surface 4 and the rolling surface 4 on the outboard side (the side closer to the outside in the vehicle width direction) of the double-row rolling surface 4 is connected to the hub wheel 9. Side-row rolling surfaces 4 are respectively formed on the inner ring 10.

内輪１０の内径面１０ａにおけるインボード側端部の全周には、内径面１０ａよりも大径となる段部１０ｂが設けられている。ハブ輪９のインボード側端部の外周には環状凹部１１が設けられており、このハブ輪９の環状凹部１１よりも先端側の部分、つまりインボード側の部分を外径側へ塑性変形させて、その塑性変形部分１２を内輪１０のインボード側を向く面１０ｂａに対向させることにより、内輪１０の抜け止めが図られている。   A stepped portion 10b having a larger diameter than the inner diameter surface 10a is provided on the entire circumference of the inboard side end portion of the inner diameter surface 10a of the inner ring 10. An annular recess 11 is provided on the outer periphery of the end portion on the inboard side of the hub wheel 9, and a portion on the tip side of the annular recess 11 of the hub wheel 9, that is, a portion on the inboard side is plastically deformed to the outer diameter side. Thus, the inner ring 10 is prevented from coming off by making the plastically deformed portion 12 face the surface 10ba of the inner ring 10 facing the inboard side.

ハブ輪９の環状凹部１１よりもインボード側の部分の外径側への塑性変形は、その内径面側に治具を圧入することにより行われる。治具は、先端側が小径となったテーパ状の外径面を有するものとされている。   The plastic deformation to the outer diameter side of the portion on the inboard side of the annular recess 11 of the hub wheel 9 is performed by press-fitting a jig into the inner diameter surface side thereof. The jig has a tapered outer diameter surface with a small diameter at the tip side.

特開２００６−１６１９７０号公報JP 2006-161970 A

上述した従来の車輪用軸受装置の品質管理において、塑性変形部分１２の塑性変形量を一定とする必要がある。そのためには、ハブ輪９のインボード側端部へのテーパ治具１３の圧入量を一定とする必要がある。また、内輪１０のインボード側を向く面１０ｂａの位置精度を高めない限り、塑性変形部分１２のアウトボード側を向く面と内輪１０のインボード側を向く面１０ｂａとの間に隙間を設定する必要があるが、この隙間が大きくなると、内輪１０が位置ずれする可能性がある。そして、内輪１０の位置ずれが発生すると、転動体５が軌道面３，４の正規でない位置を転走するようになり、傷が付き、異音や寿命低下の原因となる。さらに、内輪１０の位置ずれが軸受予圧や軸受隙間を確認する工程以後で発生すると、軸受予圧や軸受隙間の出荷保証ができなくなってしまう。   In the quality control of the conventional wheel bearing device described above, the plastic deformation amount of the plastic deformation portion 12 needs to be constant. For that purpose, it is necessary to make the press-fitting amount of the taper jig 13 to the inboard side end of the hub wheel 9 constant. Further, unless the positional accuracy of the surface 10ba facing the inboard side of the inner ring 10 is increased, a gap is set between the surface facing the outboard side of the plastic deformation portion 12 and the surface 10ba facing the inboard side of the inner ring 10. Although it is necessary, if this gap becomes large, the inner ring 10 may be displaced. And when the position shift of the inner ring 10 occurs, the rolling element 5 rolls at a non-regular position on the raceway surfaces 3, 4, resulting in scratches and abnormal noise and a decrease in life. Furthermore, if the displacement of the inner ring 10 occurs after the process of confirming the bearing preload and the bearing gap, it is impossible to guarantee the shipment of the bearing preload and the bearing gap.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、品質管理を容易ならしめる軸受装置の製造方法を提供することにある。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a method of manufacturing a bearing device that facilitates quality control.

上記目的は、本発明に係る下記（１）〜（２）の軸受装置の製造方法により達成される。   The above object is achieved by the following (1) to (2) manufacturing method of a bearing device according to the present invention.

（１）内周に複列の転走面を有する外方部材と、前記外方部材の前記各転走面に対向する転走面を外周に複列に有する内方部材と、前記外方部材及び前記内方部材の相対向する前記転走面の間にそれぞれ介装された複数の転動体と、を備え、前記内方部材が、当該内方部材の一方の前記転走面が形成されたハブ輪と、当該内方部材の他方の前記転走面が形成されて前記ハブ輪の一端部に外嵌した内輪と、を含み、前記ハブ輪の先端側部分を塑性変形させて前記内輪に軸方向に対向させ、それにより前記内輪の抜け止めを行った軸受装置の製造方法であって、前記ハブ輪の前記先端側部分を塑性変形せしめる治具に、前記先端側部分に圧入される圧入部と、前記圧入部の後方に当該圧入部よりも大径の段部を設け、前記治具の前記段部と前記ハブ輪の前記先端側部分あるいは前記内輪の端部とを当接させて前記治具の前記圧入部の圧入量を管理することを特徴とする軸受装置の製造方法。
（２）前記治具の前記段部と前記ハブ輪の前記先端側部分あるいは前記内輪の端部とが当接した後にさらに前記治具を圧入することを特徴とする（１）に記載の軸受装置の製造方法。 (1) An outer member having a double-row rolling surface on the inner periphery, an inner member having a rolling surface facing the respective rolling surfaces of the outer member in a double row on the outer periphery, and the outer A plurality of rolling elements interposed between the opposing rolling surfaces of the member and the inner member, and the inner member is formed by one of the rolling surfaces of the inner member. And the inner ring formed on the other end of the hub ring with the other rolling surface of the inner member formed thereon, and plastically deforming the tip side portion of the hub ring to A bearing device manufacturing method wherein the inner ring is axially opposed to the inner ring, thereby preventing the inner ring from coming off, and is press-fitted into the tip side part into a jig that plastically deforms the tip side part of the hub ring. And a step having a diameter larger than that of the press-fitting portion is provided behind the press-fitting portion. Method of manufacturing a bearing device characterized in that it manages the press-fitting of the press-fit portion of the jig is brought into contact with said distal end side portion or the inner ring of the end portion of the wheel.
(2) The bearing according to (1), wherein the jig is further press-fitted after the stepped portion of the jig and the end portion of the hub ring or the end of the inner ring abut. Device manufacturing method.

本発明によれば、治具に段部を設け、その段部がハブ輪の先端側部分あるいは内輪の端部と当接するまで治具を圧入しているので、治具の圧入量を管理でき、ハブ輪の先端側部分の塑性変形量を厳密に且つ容易に管理することができる。段部がハブ輪の先端側部分あるいは内輪の端部に当接したことの検出には、例えば治具の圧入荷重を監視して荷重の立ち上がりを見るとか、段部の当接面に圧力センサを設けるなどの種々の方法をとり得る。   According to the present invention, the step is provided in the jig, and the jig is press-fitted until the step comes into contact with the tip end portion of the hub wheel or the end of the inner ring. The amount of plastic deformation at the tip end portion of the hub wheel can be managed strictly and easily. In order to detect that the stepped portion has contacted the tip end portion of the hub ring or the end of the inner ring, for example, the press-fitting load of the jig is monitored to check the rise of the load, or the pressure sensor is applied to the contact surface of the stepped portion. Various methods, such as providing, can be taken.

そして、治具の段部とハブ輪の先端側部分あるいは前記内輪の端部とが当接した後にさらに治具を圧入するようにすれば、軸方向に対向するハブ輪の先端側部分と内輪との隙間をさらに少なくし、あるいは、両者を接触させることができ、内輪の位置ずれをより抑制することができる。追加の圧入は、内輪が塑性変形しない荷重で定圧にて行ってもよいし、圧入荷重を監視して荷重が立ち上がるまで行ってもよい。   If the jig is further press-fitted after the stepped portion of the jig and the tip end portion of the hub ring or the end portion of the inner ring abut, the tip end side portion of the hub ring and the inner ring facing each other in the axial direction. Can be further reduced, or both can be brought into contact with each other, and displacement of the inner ring can be further suppressed. The additional press-fitting may be performed at a constant pressure with a load that does not cause plastic deformation of the inner ring, or may be performed until the load rises by monitoring the press-fitting load.

以下、図を参照して本発明の好適な実施形態を説明する。
図１は本発明の一実施形態の軸受装置の製造方法が適用された軸受装置の断面図、図２は図１の軸受装置におけるハブ輪の塑性加工を説明する要部拡大断面図、図３は図１の軸受装置におけるハブ輪の塑性加工の変形例を説明する要部拡大断面図、図４はハブ輪の成形加工を説明する断面図である。 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a cross-sectional view of a bearing device to which a manufacturing method of a bearing device according to an embodiment of the present invention is applied. FIG. 2 is an enlarged cross-sectional view of a main part for explaining plastic working of a hub ring in the bearing device of FIG. FIG. 4 is an enlarged sectional view of a main part for explaining a modification of plastic working of the hub wheel in the bearing device of FIG. 1, and FIG. 4 is a sectional view for explaining molding of the hub wheel.

本実施形態は、内輪回転タイプで且つ駆動輪支持用の車輪用軸受装置に適用したものである。尚、本明細書において、車両に取付けた状態で車両の車幅方向外側寄りとなる側をアウトボード側と言い、車両の中央寄りとなる側をインボード側と呼ぶ。   The present embodiment is applied to a wheel bearing device for inner wheel rotation type and driving wheel support. In the present specification, the side closer to the outer side in the vehicle width direction of the vehicle when attached to the vehicle is referred to as the outboard side, and the side closer to the center of the vehicle is referred to as the inboard side.

図１に示す車輪用軸受装置は、内周に複列の転走面３を形成した外方部材１と、これら各転走面３に対向する転走面４を形成した内方部材２と、これら外方部材１および内方部材２の転走面３，４間に介在した複列の転動体５とで構成される。   The wheel bearing device shown in FIG. 1 includes an outer member 1 in which double-row rolling surfaces 3 are formed on the inner periphery, and an inner member 2 in which rolling surfaces 4 that face the respective rolling surfaces 3 are formed. The outer member 1 and the inner member 2 are composed of double-row rolling elements 5 interposed between the rolling surfaces 3 and 4.

この車輪用軸受装置は、複列のアンギュラ玉軸受型とされていて、転動体５はボールからなり、各列毎に保持器６で保持されている。各転走面３，４は断面円弧状であり、各転走面３，４はボール接触角が背面合わせとなるように形成されている。外方部材１と内方部材２との間の軸受空間の両端は、シール７，８によりそれぞれ密封されている。   This wheel bearing device is a double-row angular ball bearing type, and the rolling elements 5 are formed of balls, and are held by a cage 6 for each row. Each rolling surface 3, 4 has an arc shape in cross section, and each rolling surface 3, 4 is formed so that the ball contact angle is aligned with the back surface. Both ends of the bearing space between the outer member 1 and the inner member 2 are sealed by seals 7 and 8, respectively.

外方部材１は固定側の部材となるものであって、車体取付フランジ１ａを外周に有し、全体が一体の部品とされている。車体取付フランジ１ａは、車体（図示せず）に設置されたナックルにボルト（図示せず）で締結される。   The outer member 1 is a member on the fixed side, has a vehicle body mounting flange 1a on the outer periphery, and is formed as an integral part as a whole. The vehicle body mounting flange 1a is fastened to a knuckle installed on the vehicle body (not shown) with a bolt (not shown).

内方部材２は回転側の部材となるものであって、外周に車輪取付用のフランジ９ａを有するハブ輪９と、このハブ輪９のインボード側端部の外周に嵌合した内輪１０とでなり、複列の転走面４のうちアウトボード側列の転走面４がハブ輪９に、インボード側列の転走面４が内輪１０にそれぞれ形成されている。   The inner member 2 is a member on the rotation side, and has a hub wheel 9 having a wheel mounting flange 9a on the outer periphery, and an inner ring 10 fitted to the outer periphery of the inboard side end portion of the hub wheel 9. Thus, out of the double row rolling surfaces 4, the rolling surface 4 in the outboard side row is formed on the hub wheel 9, and the rolling surface 4 in the inboard side row is formed on the inner ring 10, respectively.

ハブ輪９はインボード側端部の外周に段差部とされた内輪嵌合面９ｂを有し、この内輪嵌合面９ｂに内輪１０が嵌合する。ハブ輪９の転走面４は、高周波焼入れ処理した表面硬化処理面とされている。また、内輪１０は、表面から芯部までの全体が焼き入れ処理により硬化させてある。   The hub wheel 9 has an inner ring fitting surface 9b that is a stepped portion on the outer periphery of the inboard side end, and the inner ring 10 is fitted to the inner ring fitting surface 9b. The rolling surface 4 of the hub wheel 9 is a surface hardened surface that has been induction hardened. Further, the inner ring 10 is entirely hardened by quenching from the surface to the core.

図１（Ｂ）に一部を拡大して示すように、内輪１０の内径面１０ａにおけるインボード側端部の全周には、内径面１０ａよりも大径となる段部１０ｂが設けられている。ハブ輪９のインボード側端部の外周には環状凹部１１が設けられており、このハブ輪９の環状凹部１１よりも先端側の部分、つまりインボード側の部分を外径側へ塑性変形させて、その塑性変形部分１２を内輪段部１０ｂのインボード側を向く面１０ｂａに対向させることにより、内輪１０の抜け止めが図られている。   As shown in a partially enlarged view in FIG. 1B, a step portion 10b having a larger diameter than the inner diameter surface 10a is provided on the entire circumference of the inboard side end portion of the inner diameter surface 10a of the inner ring 10. Yes. An annular recess 11 is provided on the outer periphery of the end portion on the inboard side of the hub wheel 9, and a portion on the tip side of the annular recess 11 of the hub wheel 9, that is, a portion on the inboard side is plastically deformed to the outer diameter side. Thus, the inner ring 10 is prevented from coming off by making the plastically deformed portion 12 face the surface 10ba facing the inboard side of the inner ring step 10b.

具体的には、図２（Ａ）に示す塑性加工前の状態で、ハブ輪９の環状凹部１１は、そのアウトボード側に向く側面１１ａが内輪段部１０ｂのインボード側を向く面１０ｂａよりも若干インボード側寄りとなる位置に設けられている。また、この状態で、ハブ輪９のインボード側の端面は、内輪１０のインボード側の端面１０ｃよりも若干アウトボード側寄りとなる位置とされている。   Specifically, in the state before the plastic working shown in FIG. 2A, the annular recess 11 of the hub wheel 9 has a side surface 11a facing the outboard side from a surface 10ba facing the inboard side of the inner ring step portion 10b. Is also located slightly closer to the inboard side. Further, in this state, the end surface on the inboard side of the hub wheel 9 is positioned slightly closer to the outboard side than the end surface 10c on the inboard side of the inner ring 10.

上記加工前の状態から、図２（Ｂ）のように、ハブ輪９の環状凹部１１よりもインボード側の部分を、その内径面側に治具１３を圧入して外径側へ塑性変形させる。治具１３は、先端側が小径となったテーパ状（テーパの角度θ）の外径面に成形された圧入部１３ａと圧入部１３ａの後方に圧入部１３ａよりも大径の段部１３ｂとを有するものとされている。   From the state before the processing, as shown in FIG. 2 (B), the portion on the inboard side of the annular recess 11 of the hub wheel 9 is press-fitted with the jig 13 on the inner diameter side thereof, and plastically deformed to the outer diameter side. Let The jig 13 includes a press-fit portion 13a formed on a tapered outer diameter surface having a small diameter on the tip side (taper angle θ) and a step portion 13b having a larger diameter than the press-fit portion 13a behind the press-fit portion 13a. It is supposed to have.

治具１３の圧入部１３ａがハブ輪９の内径面側に圧入され、それにより、ハブ輪９の環状凹部１１よりもインボード側の部分が外径側に塑性変形される。圧入部１３ａが所定量圧入されたところで、治具１３の段部１３ｂが、ハブ輪９のインボード側端部のインボード側を向く突端面９ｃに当接する。段部１３ｂがハブ輪９の突端面９ｃに当接したことの検出には、例えば治具１３の圧入荷重を監視して荷重の立ち上がりを見るとか、段部１３ｂの当接面に圧力センサを設けるなどの種々の方法をとり得る。そして、治具１３の段部１３ｂとハブ輪９の突端面９ｃとの当接を基に治具１３の圧入量を管理する。   The press-fitting portion 13a of the jig 13 is press-fitted to the inner diameter surface side of the hub wheel 9, so that the portion on the inboard side of the hub wheel 9 relative to the annular recess 11 is plastically deformed to the outer diameter side. When the press-fitting portion 13a is press-fitted by a predetermined amount, the stepped portion 13b of the jig 13 comes into contact with the protruding end surface 9c facing the inboard side of the inboard side end portion of the hub wheel 9. In order to detect that the stepped portion 13b has come into contact with the protruding end surface 9c of the hub wheel 9, for example, by monitoring the press-fit load of the jig 13 and seeing the rise of the load, or using a pressure sensor on the contacting surface of the stepped portion 13b. Various methods, such as providing, can be taken. Then, the press-fitting amount of the jig 13 is managed based on the contact between the step 13 b of the jig 13 and the protruding end surface 9 c of the hub wheel 9.

これにより、図２（Ｃ）のように、環状凹部１１におけるアウトボード側に向く側面１１ａを、内輪段部１０ｂにおけるインボード側を向く面１０ｂａのみに対向させる。このとき、ハブ輪９の塑性変形部分１２は、内輪１０よりもインボード側へ突出しない。また、ハブ輪９における塑性変形部分１２の外径面と、内輪１０における段部１０ｂとの間には若干の隙間δが確保される。   Thus, as shown in FIG. 2C, the side surface 11a facing the outboard side in the annular recess 11 is made to face only the surface 10ba facing the inboard side in the inner ring step portion 10b. At this time, the plastically deformed portion 12 of the hub wheel 9 does not protrude toward the inboard side from the inner ring 10. In addition, a slight gap δ is secured between the outer diameter surface of the plastic deformation portion 12 of the hub wheel 9 and the step portion 10b of the inner ring 10.

そして、図２（Ｃ）の例において、治具１３の段部１３ｂとハブ輪９の突端面９ｃとが当接した時点で、塑性変形部分１２は、内輪端部１０ｂのインボード側を向く面１０ｂａに接触した状態にある。従って、治具１３の追加の圧入は必ずしも必要ではない。   In the example of FIG. 2C, the plastically deformed portion 12 faces the inboard side of the inner ring end portion 10b when the stepped portion 13b of the jig 13 and the protruding end surface 9c of the hub wheel 9 come into contact with each other. The surface is in contact with the surface 10ba. Therefore, additional press-fitting of the jig 13 is not always necessary.

一方、図３の例では、治具１３の段部１３ｂとハブ輪９の突端面９ｃとが当接した時点で、塑性変形部分１２と内輪段部１０ｂのインボード側を向く面１０ｂａとの間に隙間δ２が存する。そこで、治具１３の段部１３ｂとハブ輪９の突端面９ｃとが当接した後、追加的に治具１３を圧入することが好ましい。治具１３の追加の圧入により、隙間δ２を少なくし、あるいは、塑性変形部分１２と内輪段部１０ｂのインボード側を向く面１０ｂａとを接触させることができる。治具１３の追加の圧入は、内輪１０が塑性変形しない荷重で定圧にて行ってもよいし、圧入荷重を監視して荷重が立ち上がるまで行ってもよい。   On the other hand, in the example of FIG. 3, when the step 13b of the jig 13 and the protruding end surface 9c of the hub wheel 9 abut, the plastic deformation portion 12 and the surface 10ba facing the inboard side of the inner ring step 10b. There is a gap δ2 between them. Therefore, it is preferable that the jig 13 is additionally press-fitted after the stepped portion 13b of the jig 13 and the protruding end surface 9c of the hub wheel 9 abut. By the additional press-fitting of the jig 13, the gap δ2 can be reduced, or the plastic deformation portion 12 and the surface 10ba facing the inboard side of the inner ring step portion 10b can be brought into contact with each other. The additional press-fitting of the jig 13 may be performed at a constant pressure with a load that does not cause plastic deformation of the inner ring 10, or may be performed until the load rises by monitoring the press-fit load.

塑性変形部分１２と内輪段部１０ｂのインボード側を向く面１０ｂａとの間の隙間δ２は、塑性変形部分１２の塑性変形量によって変化し、この塑性変形部分１２の塑性変形量は、治具１３の圧入量に依存し、そして治具１３の圧入量は、治具１３の段部１３ｂとハブ輪９の突端面９ｃとの当接を基に管理される。よって、内輪１０が嵌合しているハブ輪９の内輪嵌合面９ｂと突端面９ｃとの位置関係が一定であることが必要とされる。   The gap δ2 between the plastic deformation portion 12 and the surface 10ba facing the inboard side of the inner ring step portion 10b varies depending on the plastic deformation amount of the plastic deformation portion 12, and the plastic deformation amount of the plastic deformation portion 12 is determined by the jig. 13, and the press-fitting amount of the jig 13 is managed based on the contact between the stepped portion 13 b of the jig 13 and the protruding end surface 9 c of the hub wheel 9. Therefore, the positional relationship between the inner ring fitting surface 9b of the hub wheel 9 with which the inner ring 10 is fitted and the protruding end surface 9c is required to be constant.

ここで、図４（Ａ）に示すように、ハブ輪９は、一般に、フランジ９ａのアウトボード側を向く面９ａａまたはパイロット平面９ａｂを基準面とし、ダイヤモンドホイールで成形した砥石１９を用いて軌道面４と内輪嵌合面９ｂとが一体成形される。この時、図４（Ｂ）に拡大して示すように、ハブ輪９の突端面９ｃをも一体研削すれば、内輪嵌合面９ｂと突端面９ｃとの位置関係が一定となり、治具１３の圧入量を厳格に管理することができて好ましい。   Here, as shown in FIG. 4A, the hub wheel 9 is generally tracked using a grindstone 19 formed with a diamond wheel, with the surface 9aa or pilot plane 9ab facing the outboard side of the flange 9a as a reference surface. The surface 4 and the inner ring fitting surface 9b are integrally formed. At this time, as shown in an enlarged view in FIG. 4B, if the protruding end surface 9c of the hub wheel 9 is also ground integrally, the positional relationship between the inner ring fitting surface 9b and the protruding end surface 9c becomes constant, and the jig 13 It is preferable that the amount of press-fitting can be strictly controlled.

また、隙間δ２は、内輪段部１０ｂのインボード側を向く面１０ｂａの位置精度を考慮して設定される場合がある。そこで、内輪段部１０ｂのインボード側を向く面１０ｂａを、段差部とされたハブ輪９の内輪嵌合面９ｂのインボード側に向く面９ｂａ（図４参照）に当接する内輪１０のアウトボード側を向く端面１０ｄ（図１参照）を基準に加工するようにすれば、内輪段部１０ｂのインボード側を向く面１０ｂａの位置精度を高めることができ、隙間δ２を根本的に少なくすることができて好ましい。   The gap δ2 may be set in consideration of the positional accuracy of the surface 10ba facing the inboard side of the inner ring step portion 10b. Therefore, the surface 10ba facing the inboard side of the inner ring step portion 10b is out of the inner ring 10 contacting the surface 9ba (see FIG. 4) facing the inboard side of the inner ring fitting surface 9b of the hub wheel 9 which is a stepped portion. If the processing is performed based on the end face 10d facing the board side (see FIG. 1), the positional accuracy of the face 10ba facing the inboard side of the inner ring step portion 10b can be improved, and the gap δ2 is fundamentally reduced. This is preferable.

再び図１を参照して、この車輪用軸受装置の車両への組み付けにおいては、ハブ輪９の中央孔１４に、等速ジョイント１５の片方の継手部材となる外輪１６のステム部１６ａが挿通されてスプライン嵌合され、ステム部１６ａの先端に螺合するナット１７の締め付けにより、等速ジョイント外輪１６が内方部材２に結合される。このとき、等速ジョイント外輪１６に設けられたアウトボード側に向く段面１６ｂが、内輪１０のインボード側に向く端面１０ｃに押し付けられ、等速ジョイント外輪１６とナット１７とで内方部材２が幅締めされる。車輪取付用のフランジ９ａは、ハブ輪９のアウトボード側端に位置しており、このフランジ９ａにブレーキロータを介して駆動輪となる車輪（いずれも図示せず）がボルト１８で取付けられる。   Referring to FIG. 1 again, in assembling the wheel bearing device to the vehicle, the stem portion 16a of the outer ring 16 serving as one joint member of the constant velocity joint 15 is inserted into the central hole 14 of the hub wheel 9. The constant velocity joint outer ring 16 is coupled to the inner member 2 by tightening the nut 17 that is spline-fitted and screwed into the tip of the stem portion 16a. At this time, the step surface 16 b provided on the constant velocity joint outer ring 16 facing the outboard side is pressed against the end surface 10 c facing the inboard side of the inner ring 10, and the inner member 2 is formed by the constant velocity joint outer ring 16 and the nut 17. Is tightened. The wheel mounting flange 9a is located at the end of the hub wheel 9 on the outboard side, and a wheel (not shown) serving as a driving wheel is attached to the flange 9a with a bolt 18 via a brake rotor.

以上、説明したように、本実施形態の軸受装置の製造方法によれば、治具１３に段部１３ｂを設け、その段部１３ｂがハブ輪９の突端面９ｃと当接するまで治具１３を圧入しているので、治具１３の圧入量を管理でき、ハブ輪９の塑性変形部分１２の塑性変形量を厳密に且つ容易に管理することができる。   As described above, according to the manufacturing method of the bearing device of the present embodiment, the jig 13 is provided with the stepped portion 13b, and the jig 13 is mounted until the stepped portion 13b comes into contact with the protruding end surface 9c of the hub wheel 9. Since the press-fitting is performed, the press-fitting amount of the jig 13 can be managed, and the plastic deformation amount of the plastic deformation portion 12 of the hub wheel 9 can be managed strictly and easily.

そして、治具１３の段部１３ｂとハブ輪９の突端面９ｃとが当接した後にさらに治具１３を圧入するようにすれば、軸方向に対向するハブ輪９の塑性変形部分１２と内輪１０との隙間δ２をさらに少なくし、あるいは、両者を接触させることができ、内輪１０の位置ずれをより抑制することができる。   If the jig 13 is further press-fitted after the stepped portion 13b of the jig 13 and the protruding end surface 9c of the hub wheel 9 are brought into contact, the plastic deformation portion 12 and the inner ring of the hub wheel 9 facing in the axial direction. The gap δ2 with respect to 10 can be further reduced, or both can be brought into contact with each other, and the displacement of the inner ring 10 can be further suppressed.

尚、本発明は、上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。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

例えば、上述した実施形態では、治具１３の段部１３ｂをハブ輪９の突端面９ｃに当接させることにより治具１３の圧入量を管理するようにしているが、ハブ輪９の突端面９ｃに当接させることに替えて、図５に示すように、内輪１０のインボード側に向く端面１０ｃに当接させるようにしてもよい。   For example, in the above-described embodiment, the press-fitting amount of the jig 13 is managed by bringing the stepped portion 13b of the jig 13 into contact with the protruding end surface 9c of the hub wheel 9. Instead of contacting with 9c, as shown in FIG. 5, the inner ring 10 may be brought into contact with the end face 10c facing the inboard side.

内輪１０のインボード側に向く端面１０ｃは、内輪１０のアウトボード側を向く端面１０ｄ（図１参照）を基準として研削される。そのため、内輪１０のインボード側に向く端面１０ｃは、内輪アウトボード側端面１０ｄと対向するハブ輪端面９ｂａ（図４参照）に対して位置のばらつきがほとんどない。そこで、内輪１０のインボード側に向く端面１０ｃを治具１３の段部１３ｂとの当接面とし、治具の圧入量を管理することができる。   The end surface 10c facing the inboard side of the inner ring 10 is ground on the basis of the end surface 10d (see FIG. 1) facing the outboard side of the inner ring 10. Therefore, the end surface 10c facing the inboard side of the inner ring 10 has almost no positional variation with respect to the hub wheel end surface 9ba (see FIG. 4) facing the inner ring outboard side end surface 10d. Therefore, the end face 10c facing the inboard side of the inner ring 10 can be used as a contact surface with the stepped portion 13b of the jig 13, and the press-fitting amount of the jig can be managed.

内輪１０のインボード側に向く端面１０ｃを治具１３の段部１３ｂとの当接面とする場合に、両者の当接後にさらに治具１３の追加の圧入を行うと、内輪１０が軸方向に弾性変形する一方でハブ輪９の塑性変形部分１２はさらに塑性変形し、治具１３が取り外された後に内輪１０が弾性変形から復元して塑性変形部分１２と内輪端部１０ｂのインボード側を向く面１０ｂａとの係合がより強固なものとなるので、好ましい。尚、内輪１０の変形が弾性変形であるので、転走面４や転動体５に圧こんが生じる虞もない。   When the end surface 10c facing the inboard side of the inner ring 10 is a contact surface with the stepped portion 13b of the jig 13, if the jig 13 is further press-fitted after the contact between the two, the inner ring 10 is axially moved. The plastic deformation portion 12 of the hub wheel 9 is further plastically deformed while the inner ring 10 is restored from the elastic deformation after the jig 13 is removed, and the plastic deformation portion 12 and the inner ring end portion 10b on the inboard side. This is preferable because the engagement with the surface 10ba facing the surface becomes stronger. In addition, since the deformation | transformation of the inner ring | wheel 10 is elastic deformation, there is no possibility that indentation may arise in the rolling surface 4 or the rolling element 5. FIG.

また、上述した実施形態ではハブ輪９のインボード側端部の外周に環状凹部１１を設け、このハブ輪９の環状凹部１１よりも先端側の部分を外径側へ塑性変形させるものとして説明したが、本発明の軸受装置の製造方法の実施において環状凹部１１は省略することもできる。即ち、図６（Ａ）には治具１３の段部１３ｂをハブ輪９の突端面９ｃに当接させる場合、また、同図（Ｂ）には治具１３の段部１３ｂを内輪１０のインボード側に向く端面１０ｃに当接させる場合のハブ輪９の組成加工の変形例をそれぞれ示しているが、いずれの場合もハブ輪９のインボード側端部の外周に環状凹部１１は設けておらず、ハブ輪９のインボード側端部において内輪段部１０ｂのインボード側を向く面１０ｂよりもインボード側に配置される先端側部分を外径側に塑性変形させ、塑性変形部分１２´を内輪段部１０ｂのインボード側を向く面１０ｂａに対向させている。なお、本願での塑性加工としては、ハブ輪を拡径させる加工、あるいはかしめ広げる加工が考えられる。   In the above-described embodiment, the annular recess 11 is provided on the outer periphery of the end portion on the inboard side of the hub wheel 9, and the portion closer to the distal end side than the annular recess 11 of the hub wheel 9 is plastically deformed to the outer diameter side. However, the annular recess 11 can be omitted in the implementation of the method for manufacturing the bearing device of the present invention. 6A shows the case where the step 13b of the jig 13 is brought into contact with the protruding end surface 9c of the hub wheel 9, and FIG. 6B shows the step 13b of the jig 13 of the inner ring 10. Although the modification example of the composition processing of the hub wheel 9 when contacting the end surface 10c facing the inboard side is shown, the annular recess 11 is provided on the outer periphery of the inboard side end portion of the hub wheel 9 in any case. However, the tip side portion disposed on the inboard side of the inner ring step portion 10b facing the inboard side at the inboard side end portion of the hub wheel 9 is plastically deformed to the outer diameter side, and the plastic deformation portion 12 'is made to oppose the surface 10ba which faces the inboard side of the inner ring step part 10b. In addition, as the plastic processing in the present application, processing for expanding the diameter of the hub wheel, or processing for expanding by caulking can be considered.

（Ａ）は本発明の一実施形態に係る軸受装置の製造方法が適用される軸受装置の断面図、（Ｂ）は同図（Ａ）における点線円Ｉで囲まれた部分の拡大断面図である。(A) is sectional drawing of the bearing apparatus with which the manufacturing method of the bearing apparatus which concerns on one Embodiment of this invention is applied, (B) is an expanded sectional view of the part enclosed by the dotted-line circle I in the figure (A). is there. （Ａ）〜（Ｃ）は図１の軸受装置におけるハブ輪の塑性加工を説明する要部拡大断面図である。(A)-(C) are principal part expanded sectional views explaining the plastic working of the hub ring in the bearing apparatus of FIG. 図１の軸受装置におけるハブ輪の塑性加工の変形例を説明する要部拡大断面図である。It is a principal part expanded sectional view explaining the modification of the plastic processing of the hub ring in the bearing apparatus of FIG. （Ａ）はハブ輪の成形加工を説明する断面図、（Ｂ）は同図（Ａ）における点線ＩＩで囲まれた部分の拡大断面図である。(A) is sectional drawing explaining the shaping | molding process of a hub ring, (B) is an expanded sectional view of the part enclosed by the dotted line II in the same figure (A). 図１の軸受装置におけるハブ輪の塑性加工の他の変形例を説明する要部拡大断面図である。It is a principal part expanded sectional view explaining the other modification of the plastic processing of the hub ring in the bearing apparatus of FIG. （Ａ）及び（Ｂ）は図１の軸受装置におけるハブ輪の塑性加工の他の変形例を説明する要部拡大断面図である。(A) And (B) is a principal part expanded sectional view explaining the other modification of the plastic processing of the hub ring in the bearing apparatus of FIG. （Ａ）は従来の軸受装置の断面図、（Ｂ）は同図（Ａ）における点線円ＩＩＩで囲まれた部分の拡大断面図ある。(A) is sectional drawing of the conventional bearing apparatus, (B) is an expanded sectional view of the part enclosed by the dotted-line circle III in the same figure (A).

符号の説明Explanation of symbols

１ 外方部材
２ 内方部材
３ 転走面
４ 転走面
５ 転動体
９ ハブ輪
１０ 内輪
１１ 環状凹部
１２ 塑性変形部分
１３ 治具
１３ａ 圧入部
１３ｂ 段部 DESCRIPTION OF SYMBOLS 1 Outer member 2 Inner member 3 Rolling surface 4 Rolling surface 5 Rolling body 9 Hub ring 10 Inner ring 11 Annular recessed part 12 Plastic deformation part 13 Jig 13a Press-fit part 13b Step part

Claims (2)

内周に複列の転走面を有する外方部材と、前記外方部材の前記各転走面に対向する転走面を外周に複列に有する内方部材と、前記外方部材及び前記内方部材の相対向する前記転走面の間にそれぞれ介装された複数の転動体と、を備え、
前記内方部材が、当該内方部材の一方の前記転走面が形成されたハブ輪と、当該内方部材の他方の前記転走面が形成されて前記ハブ輪の一端部に外嵌した内輪と、を含み、
前記ハブ輪の先端側部分を塑性変形させて前記内輪に軸方向に対向させ、それにより前記内輪の抜け止めを行った軸受装置の製造方法であって、
前記ハブ輪の前記先端側部分を塑性変形せしめる治具に、前記先端側部分に圧入される圧入部と、前記圧入部の後方に当該圧入部よりも大径の段部を設け、
前記治具の前記段部と前記ハブ輪の前記先端側部分あるいは前記内輪の端部とを当接させて前記治具の前記圧入部の圧入量を管理することを特徴とする軸受装置の製造方法。 An outer member having a double row rolling surface on the inner periphery, an inner member having a rolling surface facing the respective rolling surfaces of the outer member in a double row on the outer periphery, the outer member, and the A plurality of rolling elements interposed between the opposing rolling surfaces of the inner member, and
The inner member has a hub ring formed with one of the rolling surfaces of the inner member, and the other rolling surface of the inner member is formed and fitted on one end of the hub ring. Including an inner ring,
A method of manufacturing a bearing device in which a distal end portion of the hub ring is plastically deformed and axially opposed to the inner ring, thereby preventing the inner ring from coming off,
A jig that plastically deforms the tip side portion of the hub wheel is provided with a press-fit portion that is press-fitted into the tip-side portion, and a step portion that is larger in diameter than the press-fit portion behind the press-fit portion,
Manufacturing the bearing device, wherein the stepped portion of the jig and the tip end side portion of the hub ring or the end portion of the inner ring are brought into contact with each other to manage the press-fitting amount of the press-fitting portion of the jig. Method. 前記治具の前記段部と前記ハブ輪の前記先端側部分あるいは前記内輪の端部とが当接した後にさらに前記治具を圧入することを特徴とする請求項１に記載の軸受装置の製造方法。   2. The bearing device according to claim 1, wherein the jig is further press-fitted after the stepped portion of the jig and the tip end portion of the hub ring or the end of the inner ring abut. Method.
JP2007028283A 2007-02-07 2007-02-07 Manufacturing method of bearing device Expired - Fee Related JP4552951B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005036905A (en) * 2003-07-16 2005-02-10 Nsk Ltd Method of manufacturing wheel supporting hub unit
JP2006096269A (en) * 2004-09-30 2006-04-13 Jtekt Corp Rolling bearing device, and its manufacturing method
JP2006132711A (en) * 2004-11-08 2006-05-25 Nsk Ltd Method of manufacturing hub unit for supporting wheel
JP2006161970A (en) * 2004-12-08 2006-06-22 Ntn Corp Wheel bearing device
JP2007024132A (en) * 2005-07-14 2007-02-01 Ntn Corp Wheel bearing device and its caulking method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61290221A (en) * 1985-06-19 1986-12-20 株式会社　北浦工業 Method of fixing nut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005036905A (en) * 2003-07-16 2005-02-10 Nsk Ltd Method of manufacturing wheel supporting hub unit
JP2006096269A (en) * 2004-09-30 2006-04-13 Jtekt Corp Rolling bearing device, and its manufacturing method
JP2006132711A (en) * 2004-11-08 2006-05-25 Nsk Ltd Method of manufacturing hub unit for supporting wheel
JP2006161970A (en) * 2004-12-08 2006-06-22 Ntn Corp Wheel bearing device
JP2007024132A (en) * 2005-07-14 2007-02-01 Ntn Corp Wheel bearing device and its caulking method

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