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JP4239249B2 - Manufacturing method of bearing device - Google Patents

Manufacturing method of bearing device Download PDF

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Publication number
JP4239249B2
JP4239249B2 JP25880898A JP25880898A JP4239249B2 JP 4239249 B2 JP4239249 B2 JP 4239249B2 JP 25880898 A JP25880898 A JP 25880898A JP 25880898 A JP25880898 A JP 25880898A JP 4239249 B2 JP4239249 B2 JP 4239249B2
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JP
Japan
Prior art keywords
caulking
diameter side
shaft body
end surface
bearing device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP25880898A
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Japanese (ja)
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JP2000087980A (en
Inventor
信一郎 柏木
基司 河村
知博 石井
匡 御手洗
啓款 村上
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JTEKT Corp
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JTEKT Corp
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Publication date
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Priority to JP25880898A priority Critical patent/JP4239249B2/en
Publication of JP2000087980A publication Critical patent/JP2000087980A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—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
    • 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

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

Abstract

PROBLEM TO BE SOLVED: To stabilize the shape of a caulked part by specifying the shape of an outside diameter end face of the caulked part. SOLUTION: In a bearing device A in which a rolling bearing 2 is prevented from slipping off and fixed by rolling-caulking a free end side of a shaft body 1 with the rolling bearing 2 fitted thereto, an outside diameter end face of a caulked part 3 is formed to be a flat surface approximately parallel to the axis of the shaft body 1. Since the outside diameter of the caulked part 3 can be controlled thereby, the interference of the caulked part 3 with an adjacent member at, for example, a place where the bearing device A is used, can be avoided.

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の製造方法に関する。
【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、上記ハブホイール８０の軸部８１は、かしめ前において、図７中の仮想線で示すように、軸部８１の自由端側に円筒形部分を設けた形状になっており、この円筒形部分を図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回りにローリングさせる。これにより、軸部８１の円筒形部分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。
【０００５】
【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の外端面が丸みを帯びた曲面に形成されているとともに、このかしめ部８５の外径側端面がハブホイール８０の軸線Ｊに対して傾斜する斜面に形成されている。
【０００６】
ところで、前述のかしめ部８５の外径側端面の形状は、特に管理していないので、かしめ作業ごとに、かしめ部８５の外径側端面の傾き角度がばらつくことがあり、かしめ部８５の外径寸法Ｄが製品ごとに不揃いになりやすい。
【０００７】
このようにかしめ部８５の外径寸法Ｄを管理していなければ、かしめ部８５が車両用ハブユットＢの使用場所において近隣の部材に対して干渉するおそれがある。ここに改良の余地がある。
【０００８】
したがって、本発明は、軸受装置の製造方法において、かしめ部の形状安定性を図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の発明に係る軸受装置の製造方法は、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軸受装置の製造方法であって、前記軸体のかしめ前において、前記軸体の自由端側に円筒形部を設けるとともに、この円筒形部の外径側端縁と内径側端縁とにテーパ状の面取りを形成し、次に、前記円筒形部を径方向外向きに変形させて前記内輪の外端面に対して押し付けてかしめ部を形成し、前記かしめ部の外径側端面を軸体の軸線とほぼ平行な平坦面に形成した。
【００１０】
請求項２の発明に係る軸受装置の製造方法は、請求項１に記載の軸受装置の製造方法において、前記円筒形部の変形過程においては、先ず、前記円筒形部の端面と外径側のテーパ状の面取りとが面一になり、続いて、先に面一になった平坦面と内径側のテーパ状の面取りとが面一になりつつ、内輪の外端面に対して押し付けられる。
請求項３の発明に係る軸受装置の製造方法は、請求項１または２に記載の軸受装置の製造方法において、前記円筒形部の外径側端縁と内径側端縁とに形成されたテーパ状の面取りの角度を管理することにより、前記かしめ部の外径側端面を軸端の軸線とほぼ平行な平坦面に形成した。
【００１１】
このような発明の構成では、要するに、かしめ部の外径側端面を軸体の軸線とほぼ平行な平坦面に形成している。これにより、かしめ部の外径寸法を管理しやすくなるので、本発明にかかる軸受装置の製造方法で製造された軸受装置のかしめ部をその軸受装置の使用場所において近隣の部材に対して干渉させないようにする場合に有利になる。
【００１２】
また、かしめ前の軸体の自由端形状を工夫すれば、ローリングかしめを行うだけで前述した形状のかしめ部を得ることが可能になり、余分な工程を増やす必要がなくなる。
【００１３】
【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。
【００１４】
図１ないし図４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、軸体のかしめ前の状態を示す側面図、図４は、かしめ形態を説明するための工程図である。
【００１５】
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。
【００１６】
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。
【００１７】
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。
【００１８】
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の外径側端面の形状に特徴がある。
【００１９】
つまり、かしめ部３の外径側端面の形状は、図２に示すように、ハブホイール１の軸線Ｊとほぼ平行な平坦面に形成されている。このようなかしめ部３を得るためには、図３に示すように、かしめ前においてハブホイール１の軸部１２の自由端側に円筒形部分１２ｃを設け、この円筒形部分１２ｃの外径側端縁と内径側端縁とにテーパ状の面取り１２ｄ，１２ｅを形成している。
【００２０】
なお、前述の面取り１２ｄ，１２ｅは、その軸方向幅Ｗと、面取り角度θ１，θ２とが軸部１２の円筒形部分１２ｃの厚み寸法に応じて適宜設定される。
【００２１】
このようなハブホイール１の軸部１２の小径外周面１２ａに対して内輪２１を圧入により外嵌装着してから、軸部１２の円筒形部分１２ｃ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の円筒形部分１２ｃ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。これにより、軸部１２の円筒形部分１２ｃ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３により内輪２１が抜け止めされるようになる。
【００２２】
このローリングかしめによる円筒形部分１２ｃの膨出変形過程で、まず、図４（ａ）に示すように、円筒形部分１２ｃの端面と外径側面取り１２ｄとが面一になり、続いて、図４（ｂ）に示すように、先に面一になった平坦面と内径側面取り１２ｅとが面一になりつつ、内輪２１の外端面に対して押し付けられることになる。ここで、本実施形態と従来例とについて、かしめ前の円筒形部分１２ｃの軸方向寸法を同一とした場合、図４（ｂ）中の実線と一点鎖線とで示すように、本実施形態のかしめ部３の外径側端面の径方向位置が、一点鎖線で示す従来例のかしめ部の外径側端面の径方向位置よりも径方向外側に位置するようになる。この場合、実質的に、内輪２１を押し付けているかしめ長さが従来例に比べてΔＬだけ長くなるので、曲げモーメントに対し有利になる。
【００２３】
以上説明したように、かしめ部３の外径側端面の形状を平坦にするようにすれば、かしめ部３の外径寸法Ｄを高精度に管理できるようになるとともに、かしめ部３の外形形状を安定にできるようになる。これにより、ハブユニットＡの使用場所において近隣の部材に対してかしめ部３が干渉することを避けるようにできる他、抜け抗力を安定して確保できるようになって信頼性向上に貢献できるようになる。
【００２４】
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。
【００２５】
（１） 上記実施形態では、軸受装置として車両の特に従動輪用のハブユニットを例に挙げたが、図５に示すような駆動輪用のハブユニットとしたり、あるいは自動車などのスライドドアのガイドローラならびにその他の軸受装置全般とすることができる。なお、図５では、軸体１の中空部分にドライブシャフト４をスプライン嵌合して、ナット５で結合している。
【００２６】
【発明の効果】
請求項１および２の発明では、かしめ部の外径側端面の形状を特定することにより、かしめ部の外径寸法を管理できるように工夫しているので、例えば本発明にかかる軸受装置の使用場所において近隣の部材にかしめ部が干渉することを回避できるようになる。
【００２７】
特に、請求項２の発明のように、かしめ前の軸体の自由端側形状を工夫すれば、ローリングかしめを行うだけで前述した形状のかしめ部を得ることができるので、余分な工程を増やす必要がなくなり、製造コストを抑制するうえで有利となる。
【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の軸体のかしめ前状態を示す要部拡大図
【図４】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５】本発明の他の実施形態の車両用ハブユニットの縦断側面図
【図６】従来例の車両用ハブユニットの縦断側面図
【図７】図５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[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a bearing device in which a rolling bearing is mounted on a shaft body.
[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]
The shaft portion 81 of the hub wheel 80 has a shape in which a cylindrical portion is provided on the free end side of the shaft portion 81 as shown by an imaginary line in FIG. 7 before caulking. The portion is rolled and caulked 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 one-dot chain line O. As a result, the cylindrical portion 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.
[0005]
[Problems to be solved by the invention]
In the above conventional example, the outer end surface of the caulking portion 85 is formed in a rounded curved surface, and the outer diameter side end surface of the caulking portion 85 is formed on a slope inclined with respect to the axis J of the hub wheel 80. Yes.
[0006]
By the way, since the shape of the outer diameter side end surface of the caulking portion 85 is not particularly controlled, the inclination angle of the outer diameter side end surface of the caulking portion 85 may vary for each caulking operation. The diameter D tends to be uneven for each product.
[0007]
If the outer diameter D of the caulking portion 85 is not managed as described above, the caulking portion 85 may interfere with neighboring members at the place where the vehicle hub unit B is used. There is room for improvement here.
[0008]
Therefore, an object of the present invention is to achieve shape stability of a caulking portion in a method for manufacturing a bearing device.
[0009]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a bearing device manufacturing method comprising: a rolling bearing is externally attached to a shaft body; and the free end side of the shaft body is bulged and deformed radially outward by rolling caulking. A method of manufacturing a bearing device in which a deformed caulking portion is pressed against an outer end surface of an inner ring of a rolling bearing to prevent the rolling bearing from being fixed to the shaft body, wherein the shaft body is free before the caulking of the shaft body. A cylindrical part is provided on the end side, and a tapered chamfer is formed on the outer diameter side edge and the inner diameter side edge of the cylindrical part, and then the cylindrical part is deformed radially outward. The caulking portion is formed by pressing against the outer end surface of the inner ring, and the outer diameter side end surface of the caulking portion is formed on a flat surface substantially parallel to the axis of the shaft body.
[0010]
According to a second aspect of the present invention, there is provided a bearing device manufacturing method according to the first aspect of the present invention, in the process of deforming the cylindrical portion, first the end surface of the cylindrical portion and the outer diameter side of the cylindrical portion. The tapered chamfer is flush with the flat surface, and then the flat surface and the tapered chamfer on the inner diameter side are pressed against the outer end surface of the inner ring while being flush with each other.
A method for manufacturing a bearing device according to a third aspect of the present invention is the method for manufacturing a bearing device according to claim 1 or 2, wherein the taper is formed on an outer diameter side edge and an inner diameter side edge of the cylindrical portion. By controlling the angle of the chamfered shape, the outer diameter side end surface of the caulking portion was formed into a flat surface substantially parallel to the axis of the shaft end.
[0011]
In the configuration of such an invention, in short, the outer diameter side end surface of the caulking portion is formed on a flat surface substantially parallel to the axis of the shaft body. As a result, the outer diameter of the caulking portion can be easily managed, so that the caulking portion of the bearing device manufactured by the method for manufacturing a bearing device according to the present invention does not interfere with neighboring members at the place where the bearing device is used. It is advantageous when doing so.
[0012]
Also, if devised free end shape of the caulking front of the shaft, it is possible to obtain a crimped portion of the shape described above only performs a rolling caulking, it is not necessary to increase the extra step.
[0013]
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.
[0014]
1 to 4 relate to an 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 state before caulking of a shaft body. The side view shown and FIG. 4 are process drawings for explaining the caulking form.
[0015]
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.
[0016]
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.
[0017]
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.
[0018]
This embodiment is characterized by the shape of the outer diameter side end face of the caulking portion 3 of the shaft portion 12 of the hub wheel 1.
[0019]
That is, the shape of the outer diameter side end surface of the caulking portion 3 is formed on a flat surface substantially parallel to the axis J of the hub wheel 1 as shown in FIG. In order to obtain such a caulking portion 3, as shown in FIG. 3, a cylindrical portion 12c is provided on the free end side of the shaft portion 12 of the hub wheel 1 before caulking, and the outer diameter side of the cylindrical portion 12c is provided. Tapered chamfers 12d and 12e are formed on the edge and the inner diameter side edge.
[0020]
Note that the chamfers 12d and 12e described above have the axial width W and the chamfer angles θ1 and θ2 appropriately set according to the thickness dimension of the cylindrical portion 12c of the shaft portion 12.
[0021]
FIG. 8 shows the cylindrical portion 12c of the shaft portion 12 used for explanation in the prior art after the inner ring 21 is externally fitted to the small-diameter outer peripheral surface 12a of the shaft portion 12 of the hub wheel 1 by press fitting. The caulking jig 90 as shown in FIG. At this time, the tip of the caulking jig 90 is applied to the cylindrical portion 12 c of the shaft portion 12, and the caulking jig 90 is rolled around the alternate long and short dash line O. As a result, the cylindrical portion 12c of the shaft portion 12 is bulged and deformed outward in the radial direction, and the inner ring 21 is prevented from being detached by the swollen caulked portion 3.
[0022]
In the bulging deformation process of the cylindrical portion 12c due to the rolling caulking, first, as shown in FIG. 4A, the end surface of the cylindrical portion 12c and the outer diameter chamfer 12d are flush with each other. As shown in FIG. 4 (b), the flat surface that is first flush with the inner diameter chamfer 12e is pressed against the outer end surface of the inner ring 21 while being flush with each other. Here, when the axial direction dimensions of the cylindrical portion 12c before caulking are the same for this embodiment and the conventional example, as shown by the solid line and the alternate long and short dash line in FIG. The radial position of the end surface on the outer diameter side of the caulking portion 3 is positioned on the outer side in the radial direction with respect to the radial position of the end surface on the outer diameter side of the caulking portion of the conventional example shown by the one-dot chain line. In this case, the caulking length for pressing the inner ring 21 is substantially longer than that of the conventional example by ΔL, which is advantageous for the bending moment.
[0023]
As described above, if the shape of the end surface on the outer diameter side of the caulking portion 3 is made flat, the outer diameter D of the caulking portion 3 can be managed with high accuracy, and the outer shape of the caulking portion 3 can be managed. Can be stabilized. As a result, it is possible to avoid the caulking portion 3 from interfering with neighboring members at the place where the hub unit A is used, and to stably secure the pull-out resistance so as to contribute to improving the reliability. Become.
[0024]
In addition, this invention is not limited only to the said embodiment, Various application and deformation | transformation can be considered.
[0025]
(1) In the above-described embodiment, a hub unit for a driven wheel of a vehicle is exemplified as an example of a bearing device. However, a hub unit for a driving wheel as shown in FIG. 5 or a guide for a slide door of an automobile or the like is used. Rollers and other bearing devices in general can be used. In FIG. 5, the drive shaft 4 is spline-fitted into the hollow portion of the shaft body 1 and coupled with a nut 5.
[0026]
【The invention's effect】
In the inventions of claims 1 and 2, the invention is devised so that the outer diameter dimension of the caulking portion can be managed by specifying the shape of the outer diameter side end surface of the caulking portion. For example, the use of the bearing device according to the present invention It is possible to avoid the caulking portion from interfering with neighboring members at the place.
[0027]
In particular, if the shape of the free end side of the shaft body before caulking is devised as in the invention of claim 2, the caulking portion having the above-described shape can be obtained only by rolling caulking, and therefore an extra step is increased. This is no longer necessary and is advantageous in reducing manufacturing costs.
[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 an enlarged view of a main portion showing a state before caulking of the shaft body of FIG. 4 is a process diagram for explaining a caulking configuration of a caulking portion in FIG. 1. FIG. 5 is a vertical side view of a vehicle hub unit according to another embodiment of the present invention. FIG. 7 is an enlarged view of the caulking portion of FIG. 5. FIG. 8 is an explanatory view showing a rolling caulking configuration.
A Vehicle hub unit 1 Hub wheel 12 Shaft portion 2 of hub wheel Double row outward angular ball bearing 21 Bearing inner ring 3 Caulking portion

Claims (3)

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の製造方法であって、
前記軸体のかしめ前において、前記軸体の自由端側に円筒形部を設けるとともに、この円筒形部の外径側端縁と内径側端縁とにテーパ状の面取りを形成し、
次に、前記円筒形部を径方向外向きに変形させて前記内輪の外端面に対して押し付けてかしめ部を形成し、
前記かしめ部の外径側端面を軸体の軸線とほぼ平行な平坦面に形成した、ことを特徴とする軸受装置の製造方法。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 method of manufacturing a bearing device in which a rolling bearing is secured to a shaft body by pressing the shaft,
Before caulking the shaft body, a cylindrical portion is provided on the free end side of the shaft body, and a tapered chamfer is formed on the outer diameter side edge and the inner diameter side edge of the cylindrical portion,
Next, the cylindrical portion is deformed radially outward and pressed against the outer end surface of the inner ring to form a crimped portion,
A bearing device manufacturing method, wherein an outer diameter side end surface of the caulking portion is formed on a flat surface substantially parallel to an axis of a shaft body. 前記円筒形部の変形過程においては、先ず、前記円筒形部の端面と外径側のテーパ状の面取りとが面一になり、続いて、先に面一になった平坦面と内径側のテーパ状の面取りとが面一になりつつ、内輪の外端面に対して押し付けられる、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。In the process of deforming the cylindrical portion, first, the end surface of the cylindrical portion and the tapered chamfer on the outer diameter side are flush with each other, and then the flat surface and the inner diameter side that are flush with each other first. 2. The method for manufacturing a bearing device according to claim 1 , wherein the taper chamfer is pressed against the outer end surface of the inner ring while being flush with the tapered chamfer. 前記円筒形部の外径側端縁と内径側端縁とに形成されたテーパ状の面取りの角度を管理することにより、前記かしめ部の外径側端面を軸端の軸線とほぼ平行な平坦面に形成した、ことを特徴とする請求項１または２に記載の軸受装置の製造方法。By controlling the angle of the tapered chamfer formed at the outer diameter side edge and the inner diameter side edge of the cylindrical part, the outer diameter side end surface of the caulking part is flat and substantially parallel to the axis of the shaft end. was formed on the surface, a manufacturing method of a bearing device according to claim 1 or 2, characterized in that.
JP25880898A 1998-09-11 1998-09-11 Manufacturing method of bearing device Expired - Fee Related JP4239249B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10871192B2 (en) * 2018-11-15 2020-12-22 Aktiebolaget Skf Flanged inner ring for orbital forming operation

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
EP1312819B1 (en) * 2000-08-21 2007-02-21 JTEKT Corporation Bearing device and method of manufacturing the bearing device
JP4940529B2 (en) * 2000-08-21 2012-05-30 株式会社ジェイテクト Bearing device and manufacturing method thereof
JP5150990B2 (en) * 2001-04-27 2013-02-27 株式会社ジェイテクト Manufacturing method of axle bearing device
JP2005324714A (en) * 2004-05-17 2005-11-24 Ntn Corp Bearing device for wheel
JP4779953B2 (en) * 2006-03-02 2011-09-28 日本精工株式会社 Bearing unit manufacturing method and bearing unit
EP3156675B1 (en) * 2014-06-13 2018-12-12 NSK Ltd. Bearing device and method for manufacturing bearing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10871192B2 (en) * 2018-11-15 2020-12-22 Aktiebolaget Skf Flanged inner ring for orbital forming operation

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