JP4147636B2 - Bearing device and manufacturing method thereof - Google Patents

Bearing device and manufacturing method thereof Download PDF

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Publication number
JP4147636B2
JP4147636B2 JP25880698A JP25880698A JP4147636B2 JP 4147636 B2 JP4147636 B2 JP 4147636B2 JP 25880698 A JP25880698 A JP 25880698A JP 25880698 A JP25880698 A JP 25880698A JP 4147636 B2 JP4147636 B2 JP 4147636B2
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JP
Japan
Prior art keywords
caulking
rolling
curved surface
shaft body
bearing device
Prior art date
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Expired - Lifetime
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JP25880698A
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Japanese (ja)
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JP2000087978A (en
Inventor
信一郎 柏木
直樹 森村
一寿 戸田
匡 御手洗
啓款 村上
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JTEKT Corp
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JTEKT Corp
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Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to JP25880698A priority Critical patent/JP4147636B2/en
Priority to US09/392,240 priority patent/US6398419B1/en
Priority to DE69932782T priority patent/DE69932782T2/en
Priority to EP99117710A priority patent/EP0992698B1/en
Publication of JP2000087978A publication Critical patent/JP2000087978A/en
Priority to US10/084,186 priority patent/US6739758B2/en
Priority to US10/084,187 priority patent/US7121730B2/en
Priority to US11/174,491 priority patent/US7104696B2/en
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Publication of JP4147636B2 publication Critical patent/JP4147636B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched

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  • Rolling Contact Bearings (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、軸体に転がり軸受を装着してなる軸受装置とその製造方法とに関する。
【０００２】
【従来の技術】
従来のこの種の軸受装置の一例として、図６に示すような車両用ハブユニットがある。
【０００３】
図例の車両用ハブユニットＢは、軸体としてのハブホイール８０の軸部８１に複列外向きアンギュラ玉軸受８２を外嵌装着し、この軸部８１の自由端をローリングかしめにより径方向外向きに膨出変形させて、この膨出変形したかしめ部８５を軸受８２の内輪８４の外端面に対して押し付けることによってハブホイール８０に軸受８２を抜け止め固定するようになっている。
【０００４】
なお、かしめ部８５は、図７に示すように、その外端面の全体が丸みを帯びた曲面形状になっている。このかしめ部８５の外端面の曲面は、単一の曲率半径ｒ０からなる。
【０００５】
上記ハブホイール８０における軸部８１の円筒形自由端を図８に示すようなかしめ治具９０を用いてローリングかしめする。このとき、かしめ治具９０の先端を軸部８１にあてがい、かしめ治具９０を一点鎖線Ｏ回りに一定角度θでローリングさせる。これにより、軸部８１の自由端が径方向外向きに膨出変形されることになり、この膨出変形したかしめ部８５により内輪８４が抜け止めされるようになる。
【０００６】
【発明が解決しようとする課題】
上記従来例では、かしめ部８５の外端面が単一の曲率半径ｒ０からなる曲面にされているが、このような従来のかしめ部８５では、かしめ過程の初期から最終近くまでほぼ一定の押圧力でかしめている。
【０００７】
このようなかしめ形態とする場合、かしめ部８５の径方向途中部分については内輪８４側に対して押し付けにくいために、部分的に離れた状態になりやすいなど、抜け荷重に対する抗力つまり抜け抗力が不足する結果になりやすい。そのため、特にモーメント荷重を受けたときなど、かしめ部８５の外周縁側が内輪８４から離れやすくなる。
【０００８】
したがって、本発明は、軸受装置において、かしめ部による抜け抗力を向上させることを目的とする。
【０００９】
【課題を解決するための手段】
請求項１の発明にかかる軸受装置は、軸体に転がり軸受を外嵌装着し、この軸体の自由端側をローリングかしめにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定したもので、前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に設定され、前記複合曲面の各曲面の曲率半径が、外径側のものほど大きくなるように設定されている。
前記複合曲面は、請求項２の発明にかかる軸受装置のように、直線を含まない３つの異なる曲率曲線を連接した複合曲面であってもよい。
【００１０】
このような本発明でのかしめ部は、例えばかしめ過程で内輪側への押圧力を調整することによって得られる特有の形状になっているから、特に曲面の曲率半径が、外径側のものほど大きくなるように設定しているから、かしめ部のほぼ全域を内輪の外端面に対してほぼ均等に押し付けることが可能になるとともに、軸方向厚みを従来例に比べて厚くできるようになっていると言える。このため、抜け抗力を従来例に比べて増大できることになり、特にモーメント荷重を受けたときでもかしめ部が内輪側から離れにくくなる。
かしめ部を上記の特有の形状にするには、かしめ工程の初期段階から最終段階に進行するにしたがい、かしめ治具のローリング角度順次小さくすればよい。または、先端の凸部の外周に環状陥没部を設け、この環状陥没部の内底面を、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に形成するとともに、前記複合曲面の各曲面の曲率半径を外径側のものほど大きくなるように設定したかしめ治具を用意し、このかしめ治具を用いて、一定角度でローリングかしめしてもよい。
【００１１】
【発明の実施の形態】
本発明の詳細を図面に示す実施形態に基づいて説明する。ここでは、軸受装置として車両用ハブユニットを例に挙げる。
【００１２】
図１ないし図３は本発明の一実施形態にかかり、図１は、車両用ハブユニットの縦断側面図、図２は、かしめ部の拡大図、図３は、かしめ形態を説明するための工程図である。
【００１３】
図中、Ａは軸受装置としての車両用ハブユニットの全体を示しており、１は軸体としてのハブホイール、２は転がり軸受としての複列外向きアンギュラ玉軸受、３はかしめ部である。
【００１４】
ハブホイール１は、図示しない車輪が取り付けられる環状板部１１と、複列外向きアンギュラ玉軸受２が外装されるとともに、軸端に複列外向きアンギュラ玉軸受２を固定するためのかしめ部３が形成される軸部１２とを備えている。
【００１５】
複列外向きアンギュラ玉軸受２は、軸部１２の小径外周面１２ａに外嵌される単一軌道を有する内輪２１と、二列の軌道溝を有する単一の外輪２２と、二列で配設される複数の玉２３と、二つの冠形保持器２４，２５とを備えており、前述のハブホイール１の軸部１２の大径外周面１２ｂを一方内輪とする構成になっている。なお、外輪２２の外周には、径方向外向きのフランジ２６が設けられており、このフランジ２６を介して図示しない車軸ケースなどに非回転に取り付けられる。
【００１６】
この実施形態では、ハブホイール１の軸部１２のかしめ部３の形状に特徴がある。
【００１７】
つまり、図２に示すように、かしめ部３の外端面において変形起点Ｙ側から外周縁までの領域が、３つの異なる曲率半径ｒ１，ｒ２，ｒ３の曲線を連接した複合曲面に設定されている。前述の３つの曲率半径ｒ１，ｒ２，ｒ３の大小関係としては、例えば外径側の曲面の曲率半径ほど大きく、つまりｒ１＜ｒ２＜ｒ３とするのが好ましい。
【００１８】
次に、上述したかしめ部３の形成方法について説明する。まず、ハブホイール１の軸部１２の小径部１２ａに対して内輪２１を例えば圧入により外嵌装着してから、軸部１２の自由端を、従来技術での説明に利用した図８に示すようなかしめ治具９０を用いてローリングかしめする。このとき、かしめ治具９０の先端を軸部１２にあてがい、かしめ治具９０を一点鎖線Ｏ回りにローリングさせるのであるが、かしめ全工程の初期段階から最終段階までを、３段階に分けて、図３（ａ）ないし（ｃ）に示すように、第１段階から第３段階までの各段階の進行にしたがいローリング角度θ１〜θ３をθ１＞θ２＞θ３と順次小さく設定するように調整している。これにより、軸部１２の自由端が径方向外向きに膨出変形されつつ、各段階においてかしめ部３の外端面の曲率半径がｒ１，ｒ２，ｒ３と順次変化することになり、図２に示すような複合曲面からなる外端面形状のかしめ部３が得られる。
【００１９】
このように、かしめ過程での各段階において押圧力を順次弱める方向に調整しているから、かしめ部３の軸方向圧縮量を極力抑えながら内輪２１の外端面に対するかしめ部３の当接部位全域をほぼ均等に押し付けることができるようになり、かしめ部３の全体の軸方向厚みが従来例に比べて厚くできる。したがって、このようなかしめ形態で得られるかしめ部３では、複列外向きアンギュラ玉軸受２の抜け抗力を従来よりも増大させることができる。
【００２０】
なお、本発明は上記実施形態のみに限定されるものではなく、種々な応用や変形が考えられる。
【００２１】
（１） 上記実施形態では、かしめ部３の外端面を複合曲面とするためにローリングかしめのローリング角度を調節するようにしているが、図４に示すようなローリングかしめ治具９０′を用いることができる。図４に示すローリングかしめ治具９０′は、上記図２に示すようなかしめ部３を得る場合のものであり、その先端の凸部９１の外周に環状陥没部９２を設け、この環状陥没部９２の内底面を例えば３つの曲率半径ｒ１，ｒ２，ｒ３からなる複合曲面に形成した形状になっている。このローリングかしめ治具９０′を用いて図８に示すような形態で一定角度θでローリングかしめする。この場合、ローリングかしめの最終段階で環状陥没部９２の内底面の形状がかしめ部３の外端面に転写されることになる。
【００２２】
（２） 上記実施形態あるいは上記（１）の実施形態において、かしめ部３の外周縁側をかしめ過程の最後にそれまでの過程よりも強く押圧することにより、図５に示すように外周縁側を丸くした形状のかしめ部３を得るようにしてもよい。この場合、かしめ過程の最終段階で途中過程よりも強く押圧するので、かしめ部３の外周縁側の軸方向厚みｈが上記実施形態よりも薄くなるものの、かしめ部３の外周縁がかしめ直後にスプリングバックして離れる現象を発生させにくい形態とすることができる。そのため、複列外向きアンギュラ玉軸受２の抜け抗力を上記実施形態よりも増大させることが可能になる。
【００２３】
（３） 上記実施形態では、かしめ部３の外端面を３つの複合曲面としているが、２つの複合曲面や３つ以上の複合曲面とすることができる。
【００２４】
（４） 上記実施形態では、軸受装置として車両用ハブユニットを例に挙げたが、例えば自動車などのスライドドアのガイドローラやその他の軸受装置全般とすることができる。
【００２５】
【発明の効果】
本発明では、かしめ部の外端面の形状を工夫することにより、内輪の外端面に対してかしめ部の当接部位全域をほぼ均等な強さで押圧させた形態としながら、軸方向厚みを可及的に厚くするようにしているから、かしめ部による抜け抗力を従来よりも増大できるようになる。そのため、特にモーメント荷重を受けたときでもかしめ部が内輪側から離れにくくなる。
【図面の簡単な説明】
【図１】本発明の一実施形態の車両用ハブユニットの縦断側面図
【図２】図１のかしめ部の拡大図
【図３】図１のかしめ部のかしめ形態を説明するための工程図
【図４】本発明の他のかしめ形態で用いるローリングかしめ治具の縦断側面図
【図５】本発明の他の実施形態で、図２に対応する図
【図６】従来例の車両用ハブユニットの縦断側面図
【図７】図６のかしめ部の拡大図
【図８】ローリングかしめ形態を示す説明図
【符号の説明】
Ａ 車両用ハブユニット
１ ハブホイール
１２ ハブホイールの軸部
２ 複列外向きアンギュラ玉軸受
２１ 軸受の内輪
３ かしめ部
ｒ１〜ｒ３ かしめ部の外端面（複合曲面）各部の曲率半径[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bearing device in which a rolling bearing is mounted on a shaft body and a manufacturing method thereof .
[0002]
[Prior art]
As an example of this type of conventional bearing device, there is a vehicle hub unit as shown in FIG.
[0003]
In the illustrated vehicle hub unit B, a double-row outward angular contact ball bearing 82 is externally attached to a shaft portion 81 of a hub wheel 80 as a shaft body, and the free end of the shaft portion 81 is radially outward by rolling caulking. By bulging and deforming in the direction, the bulging and crimping caulking portion 85 is pressed against the outer end surface of the inner ring 84 of the bearing 82 to fix the bearing 82 to the hub wheel 80 to prevent it from coming off.
[0004]
As shown in FIG. 7, the caulking portion 85 has a curved surface shape in which the entire outer end surface is rounded. The curved surface of the outer end surface of the caulking portion 85 has a single radius of curvature r0.
[0005]
The cylindrical free end of the shaft portion 81 of the hub wheel 80 is subjected to rolling caulking using a caulking jig 90 as shown in FIG. At this time, the tip of the caulking jig 90 is applied to the shaft portion 81, and the caulking jig 90 is rolled around the alternate long and short dash line O at a constant angle θ. As a result, the free end of the shaft portion 81 is bulged and deformed outward in the radial direction, and the inner ring 84 is prevented from coming off by the swollen caulking portion 85.
[0006]
[Problems to be solved by the invention]
In the above-described conventional example, the outer end surface of the caulking portion 85 is a curved surface having a single radius of curvature r0. However, with such a conventional caulking portion 85, the pressing force is almost constant from the initial stage of the caulking process to near the end. It's bullying.
[0007]
In the case of such a caulking configuration, since the caulking portion 85 in the middle in the radial direction is difficult to be pressed against the inner ring 84 side, the drag force against the falling load, that is, the pulling drag force is insufficient. The result is likely to be. Therefore, especially when a moment load is applied, the outer peripheral edge side of the caulking portion 85 is easily separated from the inner ring 84.
[0008]
Accordingly, an object of the present invention is to improve the pull-out resistance by the caulking portion in the bearing device.
[0009]
[Means for Solving the Problems]
In the bearing device according to the first aspect of the present invention, a rolling bearing is externally fitted to the shaft body, and the free end side of the shaft body is bulged and deformed outward in the radial direction by rolling caulking, and the swollen and crimped caulking is performed. The rolling bearing is secured to the shaft body by pressing the portion against the outer end surface of the inner ring of the rolling bearing, and the region from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking portion does not include a straight line. It is set to a composite curved surface in which at least two different curvature curves are connected, and the curvature radius of each curved surface of the composite curved surface is set to be larger toward the outer diameter side.
Said composite curved surfaces, like the bearing device according to the invention of claim 2, but it may also be a composite curved surface connecting three different curvatures curve that does not contain straight.
[0010]
Such a caulking portion in the present invention has a specific shape obtained by adjusting the pressing force to the inner ring side in the caulking process, for example, so that the curvature radius of the curved surface is particularly the one on the outer diameter side. Since it is set to be large, it is possible to press almost the entire area of the caulking portion almost uniformly against the outer end surface of the inner ring, and the axial thickness can be increased compared to the conventional example. It can be said. For this reason, the slip-off resistance can be increased as compared with the conventional example, and the caulking portion is hardly separated from the inner ring side even when a moment load is received.
In order to make the caulking portion have the above-described specific shape, the rolling angle of the caulking jig may be sequentially decreased as the caulking process proceeds from the initial stage to the final stage. Alternatively, an annular depression is provided on the outer periphery of the convex portion at the tip, and the inner bottom surface of the annular depression is formed into a complex curved surface connecting at least two different curvature curves not including a straight line, and each curved surface of the complex curved surface A caulking jig in which the radius of curvature of the outer diameter side is set to be larger may be prepared, and the caulking jig may be used for rolling caulking at a constant angle.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The details of the present invention will be described based on embodiments shown in the drawings. Here, a vehicle hub unit is taken as an example of the bearing device.
[0012]
1 to 3 relate to one embodiment of the present invention, FIG. 1 is a longitudinal side view of a vehicle hub unit, FIG. 2 is an enlarged view of a caulking portion, and FIG. 3 is a process for explaining a caulking form. FIG.
[0013]
In the figure, A represents the entire vehicle hub unit as a bearing device, wherein 1 is a hub wheel as a shaft body, 2 is a double-row outward angular ball bearing as a rolling bearing, and 3 is a caulking portion.
[0014]
The hub wheel 1 includes an annular plate portion 11 to which a wheel (not shown) is attached and a double-row outward angular ball bearing 2 and a caulking portion 3 for fixing the double-row outward angular ball bearing 2 to the shaft end. A shaft portion 12 is formed.
[0015]
The double-row outward angular ball bearing 2 is arranged in two rows, an inner ring 21 having a single race that is externally fitted to the small-diameter outer peripheral surface 12a of the shaft portion 12, and a single outer race 22 having two rows of race grooves. A plurality of balls 23 provided and two crown-shaped cages 24 and 25 are provided, and the large-diameter outer peripheral surface 12b of the shaft portion 12 of the hub wheel 1 described above is configured as one inner ring. A radially outward flange 26 is provided on the outer periphery of the outer ring 22, and is attached to a non-rotating axle case or the like via the flange 26.
[0016]
This embodiment is characterized by the shape of the caulking portion 3 of the shaft portion 12 of the hub wheel 1.
[0017]
That is, as shown in FIG. 2, the region from the deformation starting point Y side to the outer peripheral edge on the outer end surface of the caulking portion 3 is set to a complex curved surface connecting three curves having different curvature radii r1, r2, and r3. . The magnitude relationship between the above-mentioned three curvature radii r1, r2, and r3 is preferably as large as the curvature radius of the curved surface on the outer diameter side, that is, r1 <r2 <r3.
[0018]
Next, a method for forming the caulking portion 3 described above will be described. First, as shown in FIG. 8, the inner ring 21 is externally fitted to the small-diameter portion 12 a of the shaft portion 12 of the hub wheel 1 by, for example, press fitting, and the free end of the shaft portion 12 is used for explanation in the prior art. The caulking jig 90 is used for rolling caulking. At this time, the end of the caulking jig 90 is applied to the shaft portion 12, and the caulking jig 90 is rolled around the one-dot chain line O, but the initial stage to the final stage of the entire caulking process are divided into three stages. As shown in FIGS. 3A to 3C, the rolling angles θ1 to θ3 are adjusted so that θ1>θ2> θ3 is sequentially set to be smaller in accordance with the progress of each step from the first step to the third step. Yes. As a result, the radius of curvature of the outer end surface of the caulking portion 3 sequentially changes to r1, r2, and r3 at each stage while the free end of the shaft portion 12 bulges and deforms outward in the radial direction. A caulking portion 3 having an outer end surface shape composed of a composite curved surface as shown is obtained.
[0019]
In this way, since the pressing force is adjusted in the direction of gradually decreasing at each stage in the caulking process, the entire area where the caulking portion 3 abuts against the outer end surface of the inner ring 21 while suppressing the axial compression amount of the caulking portion 3 as much as possible. Can be pressed almost evenly, and the overall axial thickness of the caulking portion 3 can be made thicker than in the conventional example. Therefore, in the caulking portion 3 obtained in such a caulking form, the pull-out drag force of the double-row outward angular ball bearing 2 can be increased as compared with the conventional art.
[0020]
In addition, this invention is not limited only to the said embodiment, Various application and deformation | transformation can be considered.
[0021]
(1) In the above embodiment, the rolling caulking angle is adjusted so that the outer end surface of the caulking portion 3 is a complex curved surface. However, a rolling caulking jig 90 'as shown in FIG. 4 is used. Can do. A rolling caulking jig 90 'shown in FIG. 4 is for obtaining the caulking portion 3 as shown in FIG. 2, and an annular depression 92 is provided on the outer periphery of the convex portion 91 at the tip thereof. For example, the inner bottom surface of 92 is formed into a compound curved surface having three curvature radii r1, r2, and r3. Using this rolling caulking jig 90 ', rolling caulking is performed at a constant angle θ in the form as shown in FIG. In this case, the shape of the inner bottom surface of the annular depression 92 is transferred to the outer end surface of the caulking portion 3 at the final stage of rolling caulking.
[0022]
(2) In the above embodiment or the above embodiment (1), by pressing the outer peripheral edge side of the caulking portion 3 more strongly than the previous process at the end of the caulking process, the outer peripheral edge side is rounded as shown in FIG. The caulking portion 3 having the shape described above may be obtained. In this case, since the pressing is performed more strongly in the final stage of the caulking process than in the intermediate process, the axial thickness h on the outer peripheral edge side of the caulking part 3 is thinner than in the above embodiment, but the outer peripheral edge of the caulking part 3 is springed immediately after caulking. It is possible to adopt a form in which the phenomenon of back and separation is unlikely to occur. Therefore, it is possible to increase the pull-out resistance of the double-row outward angular ball bearing 2 as compared to the above embodiment.
[0023]
(3) In the above embodiment, the outer end surface of the caulking portion 3 has three composite curved surfaces, but can be two composite curved surfaces or three or more composite curved surfaces.
[0024]
(4) In the above embodiment, the vehicle hub unit is taken as an example of the bearing device. However, for example, a guide roller for a sliding door such as an automobile or other bearing devices in general can be used.
[0025]
【The invention's effect】
In the present invention , by adjusting the shape of the outer end surface of the caulking portion, the thickness in the axial direction can be increased while the entire contact portion of the caulking portion is pressed against the outer end surface of the inner ring with substantially equal strength. Since the thickness is increased as much as possible, it is possible to increase the drag resistance due to the caulking portion as compared with the conventional case. For this reason, the caulking portion is difficult to separate from the inner ring side even when a moment load is received.
[Brief description of the drawings]
1 is a longitudinal side view of a vehicle hub unit according to an embodiment of the present invention. FIG. 2 is an enlarged view of a caulking portion of FIG. 1. FIG. 3 is a process diagram for explaining a caulking configuration of the caulking portion of FIG. FIG. 4 is a longitudinal side view of a rolling caulking jig used in another caulking form of the present invention. FIG. 5 is a view corresponding to FIG. 2 in another embodiment of the present invention. FIG. 7 is an enlarged side view of the caulking portion of FIG. 6. FIG. 8 is an explanatory diagram showing a rolling caulking configuration.
A Vehicle hub unit 1 Hub wheel 12 Hub wheel shaft portion 2 Double row outward angular contact ball bearing 21 Inner ring 3 of bearing Caulking portion r1 to r3 Outer end surface (composite curved surface) radius of curvature of caulking portion

Claims (6)

軸体に転がり軸受を外嵌装着し、この軸体の自由端側をローリングかしめにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定した軸受装置であって、
前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に設定され、前記複合曲面の各曲面の曲率半径が、外径側のものほど大きくなるように設定されている、ことを特徴とする軸受装置。A rolling bearing is externally fitted to the shaft body, the free end of the shaft body is bulged and deformed radially outward by rolling caulking, and the swollen and deformed caulked portion is against the outer end surface of the inner ring of the rolling bearing. A bearing device in which the rolling bearing is secured to the shaft body by pressing the shaft,
A region from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking portion is set to a composite curved surface connecting at least two different curvature curves not including a straight line, and the curvature radius of each curved surface of the composite curved surface is an outer diameter. The bearing device is characterized in that it is set to be larger toward the side . 請求項１に記載の軸受装置において、前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない３つの異なる曲率曲線を連接した複合曲面に設定されている、ことを特徴とする軸受装置。The bearing device according to claim 1, wherein a region from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking portion is set to a composite curved surface connecting three different curvature curves not including a straight line. A bearing device. 軸体に転がり軸受を外嵌装着し、この軸体の自由端側をかしめ治具でローリングかしめすることにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定した軸受装置であって、
前記ローリングかしめ時のかしめ治具のローリング角度を、かしめ工程の初期段階から最終段階に進行するにしたがい順次小さくすることにより、前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に設定されている、ことを特徴とする軸受装置。A rolling bearing is externally attached to the shaft body, and the free end of the shaft body is bulged and deformed outward by rolling with a caulking jig, and the swollen and deformed caulked portion of the rolling bearing is A bearing device in which the rolling bearing is secured to the shaft body by being pressed against the outer end surface of the inner ring,
By gradually reducing the rolling angle of the caulking jig during the caulking process from the initial stage to the final stage of the caulking process, the area from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking part is A bearing device characterized in that it is set to a complex curved surface in which at least two different curvature curves not including a straight line are connected. 軸体に転がり軸受を外嵌装着し、この軸体の自由端側をかしめ治具でローリングかしめすることにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定した軸受装置の製造方法であって、
かしめ工程の初期段階から最終段階に進行するにしたがい前記かしめ治具のローリング角度順次小さくした、ことを特徴とする軸受装置の製造方法。A rolling bearing is externally attached to the shaft body, and the free end of the shaft body is bulged and deformed outward by rolling with a caulking jig, and the swollen and deformed caulked portion of the rolling bearing is A method of manufacturing a bearing device in which a rolling bearing is secured to a shaft body by pressing against an outer end surface of an inner ring,
A method of manufacturing a bearing device, wherein the rolling angle of the caulking jig is sequentially reduced as the caulking process proceeds from an initial stage to a final stage. 軸体に転がり軸受を外嵌装着し、この軸体の自由端側をかしめ治具でローリングかしめすることにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定した軸受装置であって、
前記かしめ治具は、先端の凸部の外周に環状陥没部を設け、この環状陥没部の内底面を、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に形成するとともに、前記複合曲面の各曲面の曲率半径を外径側のものほど大きくなるように設定し、
このかしめ治具を用いて一定角度でローリングかしめすることにより、前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に設定され、前記複合曲面の各曲面の曲率半径を外径側のものほど大きくなるように設定されている、ことを特徴とする軸受装置。A rolling bearing is externally attached to the shaft body, and the free end of the shaft body is bulged and deformed outward by rolling with a caulking jig, and the swollen and deformed caulked portion of the rolling bearing is A bearing device in which the rolling bearing is secured to the shaft body by being pressed against the outer end surface of the inner ring,
The caulking jig is provided with an annular depression on the outer periphery of the convex part at the tip, and the inner bottom surface of the annular depression is formed into a complex curved surface connecting at least two different curvature curves not including a straight line, and the complex Set the curvature radius of each curved surface to be larger on the outer diameter side,
By rolling caulking at a constant angle using this caulking jig, the area from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking part is a composite curved surface connecting at least two different curvature curves not including a straight line. The bearing device is characterized in that it is set so that the radius of curvature of each curved surface of the composite curved surface increases toward the outer diameter side . 軸体に転がり軸受を外嵌装着し、この軸体の自由端側をかしめ治具でローリングかしめすることにより径方向外向きに膨出変形させて、この膨出変形したかしめ部を転がり軸受の内輪の外端面に対して押し付けることによって軸体に転がり軸受を抜け止め固定した軸受装置の製造方法であって、
前記かしめ治具は、先端の凸部の外周に環状陥没部を設け、この環状陥没部の内底面を、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に形成するとともに、前記複合曲面の各曲面の曲率半径を外径側のものほど大きくなるように設定し、
このかしめ治具を用いて一定角度でローリングかしめすることにより、
前記かしめ部の外端面において変形起点側から外周縁までの領域が、直線を含まない少なくとも２つの異なる曲率曲線を連接した複合曲面に形成され、前記複合曲面の各曲面の曲率半径を外径側のものほど大きくなるように形成される、ことを特徴とする軸受装置の製造方法。A rolling bearing is externally attached to the shaft body, and the free end of the shaft body is bulged and deformed outward by rolling with a caulking jig, and the swollen and deformed caulked portion of the rolling bearing is A method of manufacturing a bearing device in which a rolling bearing is secured to a shaft body by pressing against an outer end surface of an inner ring,
The caulking jig is provided with an annular depression on the outer periphery of the convex part at the tip, and the inner bottom surface of the annular depression is formed into a complex curved surface connecting at least two different curvature curves not including a straight line, and the complex Set the curvature radius of each curved surface to be larger on the outer diameter side,
By caulking at a certain angle using this caulking jig ,
A region from the deformation starting point side to the outer peripheral edge on the outer end surface of the caulking portion is formed as a composite curved surface connecting at least two different curvature curves not including a straight line, and the curvature radius of each curved surface of the composite curved surface is set on the outer diameter side. A method for manufacturing a bearing device, characterized in that the bearing device is formed to be larger .
JP25880698A 1998-09-11 1998-09-11 Bearing device and manufacturing method thereof Expired - Lifetime JP4147636B2 (en)

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JP25880698A JP4147636B2 (en) 1998-09-11 1998-09-11 Bearing device and manufacturing method thereof
DE69932782T DE69932782T2 (en) 1998-09-11 1999-09-08 bearing device
EP99117710A EP0992698B1 (en) 1998-09-11 1999-09-08 Bearing device
US09/392,240 US6398419B1 (en) 1998-09-11 1999-09-08 Bearing device
US10/084,186 US6739758B2 (en) 1998-09-11 2002-02-28 Bearing device
US10/084,187 US7121730B2 (en) 1998-09-11 2002-02-28 Bearing device
US11/174,491 US7104696B2 (en) 1998-09-11 2005-07-06 Bearing device

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JP4760856B2 (en) * 2008-05-26 2011-08-31 株式会社ジェイテクト Axle bearing device
JP2014077527A (en) * 2012-10-12 2014-05-01 Ntn Corp Bearing device for wheel and method of manufacturing the same
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