JP2006123890A - Rolling bearing device and its manufacturing method - Google Patents

Rolling bearing device and its manufacturing method Download PDF

Info

Publication number
JP2006123890A
JP2006123890A JP2005275674A JP2005275674A JP2006123890A JP 2006123890 A JP2006123890 A JP 2006123890A JP 2005275674 A JP2005275674 A JP 2005275674A JP 2005275674 A JP2005275674 A JP 2005275674A JP 2006123890 A JP2006123890 A JP 2006123890A
Authority
JP
Japan
Prior art keywords
flange portion
forging
rolling
rolling bearing
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.)
Granted
Application number
JP2005275674A
Other languages
Japanese (ja)
Other versions
JP4752420B2 (en
Inventor
Shigetaka Ashida
重孝 芦田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to JP2005275674A priority Critical patent/JP4752420B2/en
Publication of JP2006123890A publication Critical patent/JP2006123890A/en
Application granted granted Critical
Publication of JP4752420B2 publication Critical patent/JP4752420B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device having a flange part which is reduced in weight while ensuring the strength, and its manufacturing method. <P>SOLUTION: The rolling bearing device has a bearing ring member 2 with a flange part 4 integrated therewith by the forging. The flange part 4 is cold-forged so that the reduction ratio (the original thickness/the thickness after the rolling) is ≥150%. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、転がり軸受装置及びその製造方法に関する。   The present invention relates to a rolling bearing device and a manufacturing method thereof.

従来より、転がり軸受装置においては、軽量化への取り組みが盛んに行われている。特に、軌道輪部材にフランジ部を有する転がり軸受装置については、フランジ部により重量が増加するため、より一層の軽量化が求められる。また、フランジ部は、転がり軸受装置と他の部材とを連結するために設けられるのが通例であるため、高い強度が要求される。
上記のような転がり軸受装置としての、例えば車両用ハブユニットは、自動車の軽量化が強力に推進されるのに伴って、より一層の軽量化が求められている。この車両用ハブユニットは、自動車の車輪を懸架装置に対して回転自在に支持するためのもので、ホイールやディスクロータなどが取り付けられるフランジ部を有するハブホイールと、このハブホイールを支持する転がり軸受とを有している。
上記の車両用ハブユニットにおいて、軽量化を図るために、フランジ部を含んだハブホイール全体を合成樹脂によって形成したものが提案されている（例えば、特許文献１参照）。 2. Description of the Related Art Conventionally, efforts have been actively made to reduce the weight of rolling bearing devices. In particular, a rolling bearing device having a flange portion on the bearing ring member is required to be further reduced in weight because the weight increases due to the flange portion. Further, since the flange portion is usually provided to connect the rolling bearing device and other members, high strength is required.
For example, a vehicle hub unit as a rolling bearing device as described above is required to be further reduced in weight as the weight reduction of automobiles is strongly promoted. This vehicle hub unit is for rotatably supporting a wheel of an automobile with respect to a suspension device. The hub wheel has a flange portion to which a wheel, a disk rotor, or the like is attached, and a rolling bearing that supports the hub wheel. And have.
In the above-described vehicle hub unit, in order to reduce the weight, there has been proposed one in which the entire hub wheel including the flange portion is formed of a synthetic resin (see, for example, Patent Document 1).

特開平１０−１００６０４号公報Japanese Patent Laid-Open No. 10-1000060

ところが、特許文献１に記載のハブユニットは、ハブホイールに芯金などの補強部材が適宜埋め込まれてはいるものの、ハブホイール全体が樹脂によって形成されているので、過度の応力が作用した場合を考慮すると、その強度が必ずしも十分とは言い難い場合があった。
本発明は、上記問題点に鑑みてなされたものであり、強度を確保しつつ軽量化することができるフランジ部付きの転がり軸受装置及びその製造方法を提供することを目的とする。 However, in the hub unit described in Patent Document 1, although a reinforcing member such as a cored bar is appropriately embedded in the hub wheel, the entire hub wheel is formed of resin, so that excessive stress is applied. In consideration, the strength may not always be sufficient.
This invention is made | formed in view of the said problem, and it aims at providing the rolling bearing apparatus with a flange part which can be reduced in weight while ensuring intensity | strength, and its manufacturing method.

本発明は、鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置であって、前記フランジ部は、圧延比（圧延前の厚さ／圧延後の厚さ）が１５０％以上となるように冷間鍛造加工されていることを特徴とする。
上記のように構成された転がり軸受装置では、フランジ部の圧延比が１５０％以上となるように冷間鍛造加工されるので、加工硬化によって、フランジ部の強度を熱間鍛造加工した場合と比べて１．５倍以上にすることができる。従って、フランジ部の強度を同一に設定した場合には、フランジ部の軸方向厚さを熱間鍛造加工した場合と比べて２／３以下にすることができる。また、上記の圧延比が１５０％未満では、充分な加工硬化を得ることができない。 The present invention is a rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging, and the flange portion has a rolling ratio (thickness before rolling / thickness after rolling). It is characterized by being cold forged so as to be 150% or more.
In the rolling bearing device configured as described above, since the cold forging is performed so that the rolling ratio of the flange portion is 150% or more, the strength of the flange portion is compared with the case where the strength of the flange portion is hot forged by work hardening. 1.5 times or more. Therefore, when the strength of the flange portion is set to be the same, the axial thickness of the flange portion can be reduced to 2/3 or less as compared with the case of hot forging. Further, when the rolling ratio is less than 150%, sufficient work hardening cannot be obtained.

また、上記の転がり軸受装置において、前記冷間鍛造加工は、冷間揺動鍛造加工であるのが好ましい。
この場合には、冷間揺動鍛造加工によってフランジ部に加えられる応力が高くなるので、当該フランジ部の強度をより一層向上させることができる。また、冷間揺動鍛造加工によって圧延比を大きくすることができるので、粗形品のフランジ部を大きく変形させることができる。従って、鍛造プレス加工によって成形される粗形品のフランジ部の径を、比較的小さくすることが可能となり、その鍛造プレス加工を単発で行うことができる。 In the rolling bearing device, the cold forging process is preferably a cold swing forging process.
In this case, since the stress applied to the flange portion by the cold swing forging process is increased, the strength of the flange portion can be further improved. Further, since the rolling ratio can be increased by cold swing forging, the flange portion of the coarse product can be greatly deformed. Therefore, the diameter of the flange portion of the rough product formed by forging press processing can be made relatively small, and the forging press processing can be performed in a single shot.

また、前記転がり軸受装置は、前記フランジ部に車輪が取り付けられる車両用ハブユニットであるのが好ましい。
この場合には、車輪が取り付けられることから高い強度が求められるフランジ部の強度を向上させることができる。このフランジ部の強度が向上することで、当該フランジ部の重量を軽減させることができるので、ハブユニットを軽量化することが可能となる。従って、自動車の懸架装置におけるばね下重量が軽くなり、走行安定性、乗り心地及び燃費を向上させることができる。 Moreover, it is preferable that the said rolling bearing apparatus is a vehicle hub unit by which a wheel is attached to the said flange part.
In this case, since the wheel is attached, the strength of the flange portion for which high strength is required can be improved. Since the strength of the flange portion is improved, the weight of the flange portion can be reduced, so that the hub unit can be reduced in weight. Therefore, the unsprung weight in the suspension device of the automobile is reduced, and the running stability, riding comfort and fuel consumption can be improved.

また、本発明の転がり軸受装置の製造方法は、鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置の製造方法であって、前記軌道輪部材の粗形品を鍛造プレス加工によって成形し、前記フランジ部の圧延比が１５０％以上となるように当該粗形品のフランジ部に冷間揺動鍛造加工することを特徴とする。   The rolling bearing device manufacturing method of the present invention is a rolling bearing device manufacturing method including a bearing ring member in which a flange portion is integrally formed by forging, and a rough product of the bearing ring member is obtained. It is formed by forging press processing, and cold swing forging is performed on the flange portion of the rough product so that the rolling ratio of the flange portion is 150% or more.

また、本発明は、鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置であって、前記フランジ部は、加工温度が当該フランジ部を構成する材質のＡ１変態温度以下でかつ、圧延比（圧延前の厚さ／圧延後の厚さ）が１５０％以上となるように鍛造加工されていることを特徴としている。
上記のように構成された転がり軸受装置においても、フランジ部は、鍛造加工されることで、加工硬化が生じ、フランジ部の強度を熱間鍛造加工した場合と比べて１．５倍以上にすることができる。従って、フランジ部の強度を同一に設定した場合には、フランジ部の軸方向厚さを熱間鍛造加工した場合と比べて２／３以下にすることができる。 Moreover, this invention is a rolling bearing device provided with the bearing ring member in which the flange part was integrally formed by the forging process, Comprising: The said flange part is A1 transformation temperature of the material which the process temperature comprises the said flange part It is characterized by being forged so that the rolling ratio (thickness before rolling / thickness after rolling) is 150% or more.
Also in the rolling bearing device configured as described above, the flange portion is forged to cause work hardening, and the strength of the flange portion is increased by 1.5 times or more compared to the case of hot forging. be able to. Therefore, when the strength of the flange portion is set to be the same, the axial thickness of the flange portion can be reduced to 2/3 or less as compared with the case of hot forging.

また、上記の転がり軸受装置において、前記鍛造加工は、揺動鍛造加工であることが好ましく、この場合、上記と同様、揺動鍛造加工によってフランジ部に加えられる応力が高くなるので、当該フランジ部の強度をより一層向上させることができる。また、揺動鍛造加工によって圧延比を大きくすることができるので、鍛造加工前の粗形品におけるフランジ部となる部分を大きく変形させることができる。従って、この粗形品におけるフランジ部となる部分の径を比較的小さくすることが可能となり、粗形品の成形加工を容易にできる。   In the above rolling bearing device, the forging process is preferably a swing forging process. In this case, the stress applied to the flange part by the swing forging process is increased as described above. The strength of the can be further improved. In addition, since the rolling ratio can be increased by swing forging, the portion to be the flange portion in the rough product before forging can be greatly deformed. Therefore, the diameter of the portion that becomes the flange portion in the rough product can be made relatively small, and the molding of the rough product can be facilitated.

また、前記転がり軸受装置は、前記フランジ部に車輪が取り付けられる車両用ハブユニットであるのが好ましく、この場合、上記同様、フランジ部の強度を向上させることができ、当該フランジ部の重量を軽減させることができるので、ハブユニットを軽量化することが可能となる。従って、自動車の懸架装置におけるバネ下重量が軽くなり、走行安定性、乗り心地及び燃費を向上させることができる。   The rolling bearing device is preferably a vehicle hub unit in which a wheel is attached to the flange portion. In this case, the strength of the flange portion can be improved as described above, and the weight of the flange portion is reduced. Therefore, it is possible to reduce the weight of the hub unit. Therefore, the unsprung weight in the automobile suspension system is reduced, and the running stability, ride comfort and fuel consumption can be improved.

また、本発明は、鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置の製造方法であって、前記軌道輪部材の粗形品に対して、加工温度が当該粗形品を構成する材質のＡ１変態温度以下でかつ、圧延比が１５０％以上となるように鍛造加工することで、前記粗形品に前記フランジ部を形成する工程を有していることを特徴としている。
本発明に係る転がり軸受の製造方法によれば、上述したように、フランジ部の強度を同一に設定した場合には、熱間鍛造加工した場合と比べて、フランジ部の軸方向厚さを２／３以下にすることができる。 The present invention also relates to a method of manufacturing a rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging, wherein the processing temperature is applied to a rough product of the bearing ring member. It has a step of forming the flange portion in the rough shape product by forging so that the rolling ratio is 150% or more and the A1 transformation temperature of the material constituting the rough shape product. It is a feature.
According to the method for manufacturing a rolling bearing according to the present invention, as described above, when the strength of the flange portion is set to be the same, the axial thickness of the flange portion is 2 as compared with the case of hot forging. / 3 or less.

本発明の転がり軸受装置及びその製造方法によれば、その強度を確保しつつフランジ部の軸方向厚さを薄くすることができるので、当該転がり軸受装置の軽量化を図ることができる。   According to the rolling bearing device and the manufacturing method thereof of the present invention, the axial thickness of the flange portion can be reduced while securing the strength thereof, and thus the weight of the rolling bearing device can be reduced.

以下、図面を参照しつつ、本発明の実施形態を説明する。
図１は、本発明の転がり軸受装置の一実施形態であるハブユニット１が組み込まれた自動車の車輪部Ｗの断面図を示しており、図２は、ハブユニット１の断面を示している。
なお、図１の左右方向がハブユニット１の軸方向であり、図の左側を軸方向内側、右側を軸方向外側という。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross-sectional view of a wheel portion W of an automobile in which a hub unit 1 which is an embodiment of a rolling bearing device of the present invention is incorporated, and FIG. 2 shows a cross-section of the hub unit 1.
The left-right direction in FIG. 1 is the axial direction of the hub unit 1, and the left side in the drawing is referred to as the axially inner side, and the right side is referred to as the axially outer side.

図１に示すように、このハブユニット１は、自動車の車輪本体６を懸架装置（図示せず）に対して回転自在に支持するためのもので、転がり軸受３と、転がり軸受３の軌道輪部材となるハブホイール２と、ハブホイール２に一体に設けられた円環状のフランジ部４とを備えている。フランジ部４の軸方向外側の外面４ａには、ディスクブレーキ装置のディスクロータ５と、車輪本体６のホイール６ａとが取り付けられている。   As shown in FIG. 1, the hub unit 1 is for rotatably supporting a wheel body 6 of an automobile with respect to a suspension device (not shown), and includes a rolling bearing 3 and a bearing ring of the rolling bearing 3. A hub wheel 2 serving as a member and an annular flange portion 4 provided integrally with the hub wheel 2 are provided. A disc rotor 5 of the disc brake device and a wheel 6 a of the wheel body 6 are attached to the outer surface 4 a on the outer side in the axial direction of the flange portion 4.

図２を参照して、ハブホイール２は、炭素鋼（例えば、Ｓ５５Ｃ）や軸受用鋼などで構成されたもので、軸方向内側に設けられる小径部７と、小径部７の軸方向内側の端部が径方向外側に屈曲変形されたかしめ部８と、小径部７より径が大きく当該小径部７から軸方向外側に向かって連続して設けられた大径部９とを具備している。また、ハブホイール２における大径部９には、その外周面から径方向外側に延びる上記のフランジ部４が設けられている。このフランジ部４は、冷間揺動鍛造加工されており、大径部９と一体に設けられている。大径部９の軸方向外側端部には、軸方向内側に凹むくりぬき部９１が形成されている。   Referring to FIG. 2, the hub wheel 2 is made of carbon steel (for example, S55C) or bearing steel, and includes a small diameter portion 7 provided on the inner side in the axial direction and an inner side in the axial direction of the small diameter portion 7. A crimped portion 8 whose end is bent and deformed radially outward, and a large-diameter portion 9 having a diameter larger than that of the small-diameter portion 7 and continuously provided from the small-diameter portion 7 toward the axially outer side. . The large-diameter portion 9 of the hub wheel 2 is provided with the flange portion 4 that extends radially outward from the outer peripheral surface thereof. This flange portion 4 is cold-oscillated forged and is provided integrally with the large-diameter portion 9. At the axially outer end portion of the large-diameter portion 9, a hollowed portion 91 that is recessed inward in the axial direction is formed.

転がり軸受３は、例えば複列玉軸受で、一対の外輪軌道面１１ａ，１１ｂを有する外輪１２と、内周面がハブホイール２の小径部７の外周面７ａに密接するように挿嵌された内輪部材１３とを備えている。そして、内輪部材１３には、軸方向内側の外輪軌道面１１ａに対向する内輪軌道面１４ａが径方向外側に設けられており、ハブホイール２の大径部１０の外周面１０ａには、軸方向外側の外輪軌道面１１ｂに対向する内輪軌道面１４ｂが設けられている。   The rolling bearing 3 is, for example, a double row ball bearing, and is fitted so that the outer ring 12 having a pair of outer ring raceway surfaces 11 a and 11 b and the inner peripheral surface are in close contact with the outer peripheral surface 7 a of the small diameter portion 7 of the hub wheel 2. And an inner ring member 13. The inner ring member 13 is provided with an inner ring raceway surface 14a facing the outer ring raceway surface 11a on the inner side in the axial direction on the outer side in the radial direction, and the outer peripheral surface 10a of the large-diameter portion 10 of the hub wheel 2 has an axial direction. An inner ring raceway surface 14b facing the outer outer ring raceway surface 11b is provided.

また、転がり軸受３には、互いに対向する内外輪軌道面に転動自在に配列された転動体である一対の玉１５と、これらの玉１５をそれぞれ周方向に所定の間隔で保持する一対の保持器１６とが設けられている。
さらに、転がり軸受３は、外輪１２の外周面１２ａから径方向外側に延設されて操舵機構のナックル１７が固定される軸受フランジ１８と、ハブホイール２と外輪１２との間に形成される環状空間Ｂを軸方向両端から密封するシール部材１９とを有している。 Further, the rolling bearing 3 includes a pair of balls 15 that are rolling elements that are arranged to freely roll on inner and outer ring raceway surfaces facing each other, and a pair of balls 15 that hold the balls 15 at predetermined intervals in the circumferential direction. A cage 16 is provided.
Further, the rolling bearing 3 is formed in an annular shape formed between the hub wheel 2 and the outer ring 12 and a bearing flange 18 that extends radially outward from the outer peripheral surface 12 a of the outer ring 12 and to which the knuckle 17 of the steering mechanism is fixed. And a seal member 19 that seals the space B from both ends in the axial direction.

次に、上記のハブユニット１の製造方法が有する複数の工程の内の一工程である、ハブホイール２に一体に設けられたフランジ部４を形成する工程について説明する。このフランジ部４は、上述のように冷間揺動鍛造加工によって形成されている。   Next, a process of forming the flange portion 4 provided integrally with the hub wheel 2 which is one of a plurality of processes included in the method for manufacturing the hub unit 1 will be described. The flange portion 4 is formed by cold swing forging as described above.

図３（ａ）は、揺動鍛造加工が完了したハブホイール２（完成品）の断面を示しており、（ｂ）は、揺動鍛造加工する前の粗形品２Ａの断面を示している。
この粗形品２Ａは、熱間鍛造プレス加工が施されたもので、別ラインの油圧式の鍛造プレス機（図示せず）によって、単発（１回のプレス鍛造）で成形されている。なお、図３における上下方向がハブユニット１の軸方向であり、図３の上側が図１，２における軸方向外側、図３の下側が図１，２における軸方向内側に該当する。また、図３（ａ）の完成品２は、かしめ部８の加工が行われていない状態を示している。 FIG. 3A shows a cross section of the hub wheel 2 (finished product) after the rocking forging process is completed, and FIG. 3B shows a cross section of the rough product 2A before the rocking forging process. .
This rough shaped product 2A is subjected to hot forging press processing, and is formed by a single shot (one press forging) by a hydraulic forging press machine (not shown) of another line. 3 corresponds to the axial direction of the hub unit 1, the upper side in FIG. 3 corresponds to the axially outer side in FIGS. 1 and 2, and the lower side in FIG. 3 corresponds to the axially inner side in FIGS. Moreover, the finished product 2 in FIG. 3A shows a state where the crimping portion 8 is not processed.

図３（ｂ）に示すように、粗形品２Ａは、軸方向下側に設けられる小径部２１と、小径部２１より径が大きく当該小径部２１から軸方向上側に向かって連続して設けられた大径部２２と、大径部２２の軸方向上側の外周面２２ａから径方向外側かつ軸方向上側へ延びる粗形品フランジ部２３とを有している。粗形品フランジ部２３は、完成品２のフランジ部４に対して径が小さく、軸方向厚さｔ２が完成品２の軸方向厚さｔ１より厚く形成されている。
なお、図３（ｂ）に示す粗形品２Ａの時点において、当該粗形品２Ａの小径部２１及び大径部２２は、図３（ａ）に示す完成品２の小径部７及び大径部９と一致した形状に形成されている。 As shown in FIG. 3B, the coarse product 2A is provided with a small diameter portion 21 provided on the lower side in the axial direction and a diameter larger than the small diameter portion 21 and continuously from the small diameter portion 21 toward the upper side in the axial direction. The large-diameter portion 22 is provided, and a rough flange portion 23 extending radially outward and axially upward from the outer peripheral surface 22a on the axially upper side of the large-diameter portion 22 is provided. The rough product flange portion 23 is smaller in diameter than the flange portion 4 of the finished product 2 and has an axial thickness t2 larger than the axial thickness t1 of the finished product 2.
At the time of the coarse product 2A shown in FIG. 3B, the small diameter portion 21 and the large diameter portion 22 of the coarse product 2A are the same as the small diameter portion 7 and the large diameter of the finished product 2 shown in FIG. It is formed in a shape that matches the portion 9.

図４（ａ），（ｂ）は、粗形品２Ａの粗形品フランジ部２３が、冷間揺動鍛造加工によって完成品２のフランジ部４に成形される過程を示している。なお、図４における揺動鍛造機２４は、上下型２５，２６のみを示すに留めており、その他の構成機器は図示を省略している。
図４に示すように、冷間揺動鍛造加工には、揺動鍛造機２４が用いられており、この揺動鍛造機２４には、粗形品２Ａの軸方向上側で揺動運動する上型２５と、粗形品フランジ部２３を支持すべく上型２５と軸方向に対向して配置された下型２６とが設けられている。下型２６は、油圧によって軸方向上下に移動可能であり、上型２５との間で粗形品２Ａを加圧できるようになっている。 4A and 4B show a process in which the rough product flange portion 23 of the rough product 2A is formed into the flange portion 4 of the finished product 2 by cold swing forging. In addition, the rocking forging machine 24 in FIG. 4 is only showing the upper and lower dies 25 and 26, and the other components are not shown.
As shown in FIG. 4, an oscillating forging machine 24 is used for the cold oscillating forging process, and the oscillating forging machine 24 is used to oscillate on the upper side in the axial direction of the rough product 2A. A die 25 and an upper die 25 and a lower die 26 arranged in an axial direction so as to support the rough product flange portion 23 are provided. The lower mold 26 can move in the axial direction up and down by hydraulic pressure, and can press the rough shaped product 2 </ b> A with the upper mold 25.

上型２５は、その軸方向下側にすり鉢状のノーズ部２７が設けられており、そのノーズ部２７の軸方向下側の成形面２７ａには、成形しようとする形状が転写されている。
ノーズ部２７を有する上型２５は、その軸（揺動軸）Ｙが鉛直軸Ｚに対して所定の角度θで傾斜しており、この角度θを維持した状態で鉛直軸Ｚ周りに回転して揺動運動するようになっている。この揺動運動の揺動モーションは、円モーションであり、揺動中心点は、任意の位置となる。 The upper mold 25 is provided with a mortar-shaped nose portion 27 on the lower side in the axial direction, and a shape to be molded is transferred to a molding surface 27 a on the lower side in the axial direction of the nose portion 27.
The upper die 25 having the nose portion 27 has its axis (oscillation axis) Y inclined at a predetermined angle θ with respect to the vertical axis Z, and rotates around the vertical axis Z while maintaining this angle θ. And swinging. The swing motion of this swing motion is a circular motion, and the swing center point is an arbitrary position.

下型２６は、粗形品２Ａの大径部２２を挿通可能な貫通孔２８が形成されており、この貫通孔２８を形成する下型縁部２６ａが、粗形品フランジ部２３を軸方向下側から支持している。そして、下型２６は、粗形品２Ａを支持しつつ上型２５に向かって所定の圧力で加圧している。
上記のように、粗形品フランジ部２３が、上型２５のノーズ部２７と下型２６との間で加圧された状態で、ノーズ部２７が鉛直軸Ｚを中心に円モーションの揺動運動を行う。この揺動運動によって、粗形品フランジ部２３の軸方向上側の鍛造面２３ａと、ノーズ２７の成形面２７ａとが局部的に接触し、この接触部分が周方向に連続的に移動する。このようにして、粗形品フランジ部２３に、円周方向の局部的な鍛造加工が連続して施される。そして、粗形品フランジ部２３は、揺動運動が周回するごとに外径が徐々に大きくなるとともに、軸方向厚さが徐々に薄くなるように変形する。この工程は、粗形品フランジ部２３の軸方向厚さｔ１（図３参照）を完成品２のフランジ部４の軸方向厚さｔ２（図３参照）で除した値で表される圧延比が１５０％以上となるように繰り返し連続して行われ、粗形品フランジ部２３が、完成品２のフランジ部４へと成形される。上記の圧延比を１５０％以上とするのは、圧延比が１５０％未満では充分な加工硬化を得ることができないからである。また、その圧延比は、２５０％以下であるのが好ましい。圧延比が２５０％を超えると、フランジ部４の厚さが小さくなり過ぎて圧延割れが生じるからである。 The lower die 26 is formed with a through hole 28 through which the large-diameter portion 22 of the coarse product 2A can be inserted, and the lower die edge 26a forming the through hole 28 extends the rough product flange portion 23 in the axial direction. Support from below. The lower mold 26 pressurizes the upper mold 25 with a predetermined pressure while supporting the coarse product 2A.
As described above, in the state where the rough product flange portion 23 is pressurized between the nose portion 27 and the lower die 26 of the upper die 25, the nose portion 27 swings the circular motion around the vertical axis Z. Do exercise. By this swinging movement, the forged surface 23a on the upper side in the axial direction of the rough product flange portion 23 and the molding surface 27a of the nose 27 are in local contact, and this contact portion continuously moves in the circumferential direction. Thus, the local forging process of the circumferential direction is continuously given to the rough product flange part 23. The coarse product flange portion 23 is deformed so that the outer diameter gradually increases and the axial thickness gradually decreases as the swinging motion circulates. This step is a rolling ratio expressed by a value obtained by dividing the axial thickness t1 (see FIG. 3) of the rough flange portion 23 by the axial thickness t2 (see FIG. 3) of the flange portion 4 of the finished product 2. Is repeatedly performed continuously so that it becomes 150% or more, and the rough product flange portion 23 is formed into the flange portion 4 of the finished product 2. The reason why the rolling ratio is 150% or more is that sufficient work hardening cannot be obtained when the rolling ratio is less than 150%. The rolling ratio is preferably 250% or less. This is because if the rolling ratio exceeds 250%, the thickness of the flange portion 4 becomes too small and rolling cracks occur.

上記のように製造されたハブユニット１のフランジ部４は、冷間鍛造加工による加工硬化によってその強度を向上させることができる。具体的には、冷間鍛造加工によって成形されたフランジ部４は、繊維状組織が切断されることなく組織が微細化されるので、フランジ部４の強度を熱間鍛造加工する場合と比べて１．５倍以上にすることができる。
本願発明者による試験結果では、フランジ部４を熱間鍛造加工で形成した場合には、フランジ部４の硬さが１５〜２３ＨＲＣであったのに対して、フランジ部４を冷間鍛造加工で形成した場合には、フランジ部４の硬さが３３ＨＲＣ以上となった。つまり、冷間鍛造加工で形成したフランジ部４は、熱間鍛造加工で形成したフランジ部４に比べてその硬さが１．５倍以上に向上する。すなわち、フランジ部４の強度が１．５倍以上に向上する。 The flange portion 4 of the hub unit 1 manufactured as described above can have its strength improved by work hardening by cold forging. Specifically, since the structure of the flange portion 4 formed by cold forging is refined without cutting the fibrous structure, the strength of the flange portion 4 is compared with the case of hot forging. It can be 1.5 times or more.
According to the test results by the inventors of the present application, when the flange portion 4 is formed by hot forging, the flange portion 4 has a hardness of 15 to 23 HRC, whereas the flange portion 4 is cold forged. When formed, the hardness of the flange portion 4 was 33 HRC or more. That is, the hardness of the flange portion 4 formed by cold forging is improved by 1.5 times or more compared to the flange portion 4 formed by hot forging. That is, the strength of the flange portion 4 is improved by 1.5 times or more.

また、強度が向上することで、フランジ部４の厚さを薄くすることが可能となり、熱間鍛造加工する場合に比べて２／３以下の厚さにすることができる。そして、フランジ部４の厚さを薄くすることで、ハブユニット１の材料コストを削減することができる。すなわち、ハブユニット１の構造強度を確保しつつ、軽量化を図ることができるので、懸架装置におけるばね下重量が軽くなり、自動車の走行安定性、乗り心地及び燃費を向上させることができる。   Further, by improving the strength, the thickness of the flange portion 4 can be reduced, and the thickness can be reduced to 2/3 or less as compared with the case of hot forging. And the material cost of the hub unit 1 can be reduced by making the thickness of the flange part 4 thin. That is, since the weight reduction can be achieved while ensuring the structural strength of the hub unit 1, the unsprung weight in the suspension device is reduced, and the running stability, riding comfort and fuel consumption of the automobile can be improved.

また、冷間揺動鍛造加工によってフランジ部４に加えられる応力がより一層大きくなるので、フランジ部４の加工硬化による強度の向上がより一層大きくなる。従って、フランジ部４の厚さを薄くしてもハブユニット１の構造強度を充分に確保することができる。さらに、冷間揺動鍛造加工を採用することによって圧延比を大きくすることができるので、粗形品２Ａのフランジ部２３を大きく変形させることができる。従って、鍛造プレス加工によって成形される粗形品２Ａのフランジ部２３の径を、比較的小さくすることが可能となり、粗形品２Ａの鍛造プレス加工を単発で行うことができる。さらに、粗形品フランジ部２３を成形するためのプレス圧力も、より小さくすることが可能となり、粗形品２Ａを成形する鍛造プレス機を小型化することができる。従って、設備費を大幅に削減することができるとともに、コスト削減に大きく貢献することができる。   In addition, since the stress applied to the flange portion 4 by the cold swing forging process is further increased, the strength improvement by work hardening of the flange portion 4 is further increased. Accordingly, the structural strength of the hub unit 1 can be sufficiently ensured even if the thickness of the flange portion 4 is reduced. Furthermore, since the rolling ratio can be increased by adopting the cold swing forging process, the flange portion 23 of the rough shaped product 2A can be greatly deformed. Therefore, the diameter of the flange portion 23 of the rough shaped product 2A formed by forging press processing can be made relatively small, and the forging press processing of the rough shaped product 2A can be performed in a single shot. Furthermore, the pressing pressure for forming the rough product flange portion 23 can be further reduced, and the forging press machine for forming the rough product 2A can be downsized. Therefore, it is possible to greatly reduce the equipment cost and greatly contribute to the cost reduction.

また、本実施形態におけるフランジ部４の鍛造加工は、上述のように、常温域で行われる冷間鍛造によって行ったので、鍛造加工に伴う加工硬化が顕著に得られ、フランジ部４の強度をより一層向上させることができる。
なお、フランジ部４を成形するための揺動鍛造加工は、その加工温度を粗形品２Ａの材質におけるＡ１変態温度（炭素鋼の場合、７２３℃）以下に設定して行えばよく、この加工温度の範囲で、鍛造加工すれば加工硬化によってその強度を向上させることができる。強度が向上することで、フランジ部４の強度を同一に設定した場合には、フランジ部４の厚さを薄くすることが可能となり、熱間鍛造加工する場合に比べて２／３以下の厚さにすることができる。このように、強度を確保しつつフランジ部４の厚さを薄くすることができるので、上記実施形態にて示した冷間鍛造加工の場合と同様、ハブユニット１全体として軽量化を図ることができる。また、フランジ部４の厚さを薄くすることで、ハブユニット１の材料コストを削減することもできる。 Moreover, since the forging process of the flange part 4 in this embodiment was performed by the cold forging performed in a normal temperature range as mentioned above, the work hardening accompanying a forging process is notably obtained, and the intensity | strength of the flange part 4 is obtained. This can be further improved.
The swing forging process for forming the flange portion 4 may be performed by setting the processing temperature to be equal to or lower than the A1 transformation temperature (723 ° C. in the case of carbon steel) in the material of the rough product 2A. If forging is performed within the temperature range, the strength can be improved by work hardening. When the strength of the flange portion 4 is set to be the same by improving the strength, the thickness of the flange portion 4 can be reduced, and the thickness is 2/3 or less compared to the case of hot forging. Can be Thus, since the thickness of the flange portion 4 can be reduced while securing the strength, the hub unit 1 as a whole can be reduced in weight as in the case of the cold forging process described in the above embodiment. it can. Moreover, the material cost of the hub unit 1 can also be reduced by reducing the thickness of the flange portion 4.

例えば、炭素鋼の場合、Ａ１変態温度は７２３℃であり、この温度以下の範囲で比較的高い温度領域、例えば４００〜７２３℃の範囲に加工温度を設定して鍛造加工を行ってもよい。上記のような加工温度範囲とした、いわゆる温間鍛造加工によれば、被加工材の加工硬化を得ることができるとともに、被加工材の塑性変形が容易になる等、加工性を向上させることができる。
すなわち、フランジ部４の鍛造加工を温間鍛造加工とすることで、加工硬化によってフランジ部４の強度を向上させつつ、鍛造加工時の加工性を向上させることができるので、鍛造時に加圧する際の荷重を小さくすることができる。これによって、より小型の油圧プレス器等で鍛造加工が可能となり、さらなる低コスト化が可能となる。 For example, in the case of carbon steel, the A1 transformation temperature is 723 ° C., and the forging may be performed by setting the processing temperature within a relatively high temperature range, for example, a range of 400 to 723 ° C. within this temperature range. According to the so-called warm forging process with the above processing temperature range, work hardening of the work material can be obtained and workability can be improved such that plastic deformation of the work material becomes easy. Can do.
That is, by making the forging process of the flange part 4 a warm forging process, the workability at the time of forging can be improved while improving the strength of the flange part 4 by work hardening. The load can be reduced. Thus, forging can be performed with a smaller hydraulic press or the like, and further cost reduction can be achieved.

さらに、揺動鍛造加工によって圧延比を大きくすることができるので、粗形品２Ａの粗形品フランジ部２３を大きく変形させることができる。従って、粗形品フランジ部２３の径を比較的小さくすることが可能となり、これによって、粗形品２Ａを得る際の鍛造プレス加工を単発で行うことができる等、粗形品２Ａの成形加工を容易にできる。さらに、粗形品フランジ部２３の径を小さくできるので、粗形品２Ａを成形する鍛造プレス機を小型化することができる。従って、設備費を大幅に削減することができるとともに、コスト削減に大きく貢献することができる。   Furthermore, since the rolling ratio can be increased by swing forging, the rough product flange portion 23 of the rough product 2A can be greatly deformed. Accordingly, the diameter of the rough shaped product flange portion 23 can be made relatively small, whereby the forging press work for obtaining the rough shaped product 2A can be performed in a single shot, etc. Can be easily done. Furthermore, since the diameter of the rough product flange portion 23 can be reduced, the forging press machine for forming the rough product 2A can be downsized. Therefore, the facility cost can be greatly reduced and the cost can be greatly reduced.

なお、本発明は上述した実施形態に限定されるものではない。例えば、上記実施形態において、粗形品２Ａは、熱間鍛造プレス加工による成形によって得られたものを用いたが、例えば、冷間あるいは温間鍛造加工によって成形しても良いし、鋳造及び旋削等の加工によって成形しても良い。
また、本発明のハブユニット１（転がり軸受装置）は、フランジ部４を有するものであれば良く、自動車のハブユニットとして用いられるものに限定するものではない。また、フランジ部４は、外輪１２の外周面に設けられてもよい。 In addition, this invention is not limited to embodiment mentioned above. For example, in the above embodiment, the coarse product 2A is obtained by molding by hot forging press processing, but may be formed by, for example, cold or warm forging processing, casting and turning You may shape | mold by processes, such as.
Moreover, the hub unit 1 (rolling bearing device) of the present invention is not limited to the one used as a hub unit of an automobile, as long as it has the flange portion 4. Further, the flange portion 4 may be provided on the outer peripheral surface of the outer ring 12.

ハブユニットが組み込まれた自動車の車輪部の部分断面図である。It is a fragmentary sectional view of the wheel part of the automobile in which the hub unit was incorporated. ハブユニットの部分断面図である。It is a fragmentary sectional view of a hub unit. （ａ）は、ハブホイールを示す断面図であり、（ｂ）は、粗形品を示す断面図である。(A) is sectional drawing which shows a hub wheel, (b) is sectional drawing which shows a rough shape product. フランジ部の成形過程を模式的に示す断面図である。It is sectional drawing which shows the shaping | molding process of a flange part typically.

符号の説明Explanation of symbols

１ ハブユニット（転がり軸受装置）
２ ハブホイール（軌道輪部材）
２Ａ （ハブホイールの）粗形品
３ 複列玉軸受（転がり軸受）
４ フランジ部
６ 車輪本体（車輪）
２３ 粗形品フランジ部 1 Hub unit (rolling bearing device)
2 Hub wheel (Raceway member)
2A Coarse product (of hub wheel) 3 Double row ball bearing (rolling bearing)
4 Flange 6 Wheel body (wheel)
23 Rough flange part

Claims (8)

鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置であって、
前記フランジ部は、圧延比（圧延前の厚さ／圧延後の厚さ）が１５０％以上となるように冷間鍛造加工されていることを特徴とする転がり軸受装置。 A rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging,
The rolling bearing device, wherein the flange portion is cold forged so that a rolling ratio (thickness before rolling / thickness after rolling) is 150% or more. 前記冷間鍛造加工は、冷間揺動鍛造加工であることを特徴とする請求項１に記載の転がり軸受装置。   The rolling bearing device according to claim 1, wherein the cold forging process is a cold swing forging process. 前記転がり軸受装置は、前記フランジ部に車輪が取り付けられる車両用ハブユニットであることを特徴とする請求項１または２に記載の転がり軸受装置。   The rolling bearing device according to claim 1, wherein the rolling bearing device is a vehicle hub unit in which a wheel is attached to the flange portion. 鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置の製造方法であって、
前記軌道輪部材の粗形品を鍛造プレス加工によって成形し、前記フランジ部の圧延比が１５０％以上となるように当該粗形品のフランジ部に冷間揺動鍛造加工することを特徴とする転がり軸受装置の製造方法。 A method of manufacturing a rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging,
A rough shaped product of the bearing ring member is formed by forging press processing, and cold swing forging is performed on the flange portion of the rough shaped product so that a rolling ratio of the flange portion is 150% or more. A method of manufacturing a rolling bearing device. 鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置であって、
前記フランジ部は、加工温度が当該フランジ部を構成する材質のＡ１変態温度以下でかつ、圧延比（圧延前の厚さ／圧延後の厚さ）が１５０％以上となるように鍛造加工されていることを特徴とする転がり軸受装置。 A rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging,
The flange portion is forged so that the processing temperature is equal to or lower than the A1 transformation temperature of the material constituting the flange portion, and the rolling ratio (thickness before rolling / thickness after rolling) is 150% or more. A rolling bearing device characterized by comprising: 前記鍛造加工は、揺動鍛造加工であることを特徴とする請求項５に記載の転がり軸受装置。   The rolling bearing device according to claim 5, wherein the forging process is a swing forging process. 前記転がり軸受装置は、前記フランジ部に車輪が取り付けられる車両用ハブユニットであることを特徴とする請求項５又は６に記載の転がり軸受装置。   The rolling bearing device according to claim 5 or 6, wherein the rolling bearing device is a vehicle hub unit in which a wheel is attached to the flange portion. 鍛造加工によりフランジ部が一体に形成された軌道輪部材を備えている転がり軸受装置の製造方法であって、
前記軌道輪部材の粗形品に対して、加工温度が当該粗形品を構成する材質のＡ１変態温度以下でかつ、圧延比が１５０％以上となるように鍛造加工することで、前記粗形品に前記フランジ部を形成する工程を有していることを特徴とする転がり軸受装置の製造方法。 A method of manufacturing a rolling bearing device including a bearing ring member in which a flange portion is integrally formed by forging,
The rough shape of the bearing ring member is forged so that the processing temperature is not higher than the A1 transformation temperature of the material constituting the rough shape and the rolling ratio is not less than 150%. A method for manufacturing a rolling bearing device, comprising the step of forming the flange portion on a product.
JP2005275674A 2004-10-01 2005-09-22 Rolling bearing device and manufacturing method thereof Expired - Fee Related JP4752420B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005275674A JP4752420B2 (en) 2004-10-01 2005-09-22 Rolling bearing device and manufacturing method thereof

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004290418 2004-10-01
JP2004290418 2004-10-01
JP2005275674A JP4752420B2 (en) 2004-10-01 2005-09-22 Rolling bearing device and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JP2006123890A true JP2006123890A (en) 2006-05-18
JP4752420B2 JP4752420B2 (en) 2011-08-17

Family

ID=36719012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005275674A Expired - Fee Related JP4752420B2 (en) 2004-10-01 2005-09-22 Rolling bearing device and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP4752420B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008062290A (en) * 2006-09-11 2008-03-21 Jatco Ltd Cold forming apparatus for sheet metal
JP2008296824A (en) * 2007-06-01 2008-12-11 Ntn Corp Flange structure
JP2010188829A (en) * 2009-02-17 2010-09-02 Jtekt Corp Wheel bearing device
JP2010188833A (en) * 2009-02-17 2010-09-02 Jtekt Corp Wheel bearing device
WO2012043706A1 (en) * 2010-09-30 2012-04-05 Ntn株式会社 Drive wheel bearing unit and method for manufacturing same
JP2012197932A (en) * 2011-03-07 2012-10-18 Jtekt Corp Manufacturing method for wheel roller bearing device
US8511903B2 (en) 2009-02-17 2013-08-20 Jtekt Corporation Wheel bearing device and manufacturing method therefor
JP2013166157A (en) * 2012-02-14 2013-08-29 Toyota Motor Corp Rocking die forging method, workpiece used therefor and method for determination of workpiece shape
CN105650111A (en) * 2015-12-15 2016-06-08 中国燃气涡轮研究院 Rolling bearing for vectoring nozzle
JP2018114534A (en) * 2017-01-18 2018-07-26 新日鐵住金株式会社 Hub and manufacturing method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64220A (en) * 1987-06-23 1989-01-05 Nippon Steel Corp Production of hot forged and non-tempered parts for machine structural purpose
JPH07314071A (en) * 1994-05-20 1995-12-05 Ntn Corp Working method for serration hole of bearing outer ring for hub unit
JPH07317755A (en) * 1994-05-20 1995-12-08 Ntn Corp Hub unit bearing outer wheel and manufacture thereof
JPH09276975A (en) * 1996-04-19 1997-10-28 Gooshiyuu:Kk Rotary member having rotor for abs and manufacture thereof
JP2000310228A (en) * 1999-04-23 2000-11-07 Nsk Ltd Rolling bearing unit for supporting wheel
JP2004100946A (en) * 2002-07-15 2004-04-02 Nsk Ltd Rolling bearing unit for supporting wheel
JP2004144182A (en) * 2002-10-24 2004-05-20 Koyo Seiko Co Ltd Rolling bearing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS64220A (en) * 1987-06-23 1989-01-05 Nippon Steel Corp Production of hot forged and non-tempered parts for machine structural purpose
JPH07314071A (en) * 1994-05-20 1995-12-05 Ntn Corp Working method for serration hole of bearing outer ring for hub unit
JPH07317755A (en) * 1994-05-20 1995-12-08 Ntn Corp Hub unit bearing outer wheel and manufacture thereof
JPH09276975A (en) * 1996-04-19 1997-10-28 Gooshiyuu:Kk Rotary member having rotor for abs and manufacture thereof
JP2000310228A (en) * 1999-04-23 2000-11-07 Nsk Ltd Rolling bearing unit for supporting wheel
JP2004100946A (en) * 2002-07-15 2004-04-02 Nsk Ltd Rolling bearing unit for supporting wheel
JP2004144182A (en) * 2002-10-24 2004-05-20 Koyo Seiko Co Ltd Rolling bearing device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008062290A (en) * 2006-09-11 2008-03-21 Jatco Ltd Cold forming apparatus for sheet metal
JP4606395B2 (en) * 2006-09-11 2011-01-05 ジヤトコ株式会社 Cold sheet metal forming equipment
JP2008296824A (en) * 2007-06-01 2008-12-11 Ntn Corp Flange structure
JP2010188829A (en) * 2009-02-17 2010-09-02 Jtekt Corp Wheel bearing device
JP2010188833A (en) * 2009-02-17 2010-09-02 Jtekt Corp Wheel bearing device
US8511903B2 (en) 2009-02-17 2013-08-20 Jtekt Corporation Wheel bearing device and manufacturing method therefor
WO2012043706A1 (en) * 2010-09-30 2012-04-05 Ntn株式会社 Drive wheel bearing unit and method for manufacturing same
JP2012197932A (en) * 2011-03-07 2012-10-18 Jtekt Corp Manufacturing method for wheel roller bearing device
JP2013166157A (en) * 2012-02-14 2013-08-29 Toyota Motor Corp Rocking die forging method, workpiece used therefor and method for determination of workpiece shape
CN105650111A (en) * 2015-12-15 2016-06-08 中国燃气涡轮研究院 Rolling bearing for vectoring nozzle
JP2018114534A (en) * 2017-01-18 2018-07-26 新日鐵住金株式会社 Hub and manufacturing method thereof

Also Published As

Publication number Publication date
JP4752420B2 (en) 2011-08-17

Similar Documents

Publication Publication Date Title
JP4752420B2 (en) Rolling bearing device and manufacturing method thereof
US10137541B2 (en) Method for manufacturing bearing ring member
US8424205B2 (en) Method for manufacturing a bearing ring member
JP2008173661A (en) Die device for manufacturing hub ring, and method for manufacturing hub ring
JP2006177466A (en) Outer ring of third generation hub bearing unit for supporting wheel of automobile and method of manufacturing the same
US8763255B2 (en) Manufacturing method for wheel rolling bearing device, and wheel rolling bearing device
JP4893585B2 (en) Manufacturing method of wheel bearing rolling bearing unit
JP5168852B2 (en) Bearing unit
JP2005195084A (en) Method for caulking to bearing device
JP2011147974A (en) Method for manufacturing member made of metal with outward flange part
JP2010188835A (en) Method of manufacturing wheel bearing device
JP5182144B2 (en) Method for manufacturing bearing ring member
JP4581233B2 (en) Rolling bearing unit for wheel support
JP6311414B2 (en) Manufacturing method of metal member with outward flange, manufacturing method of rolling bearing unit for supporting wheel, and manufacturing method of automobile
WO2014002924A1 (en) Method for manufacturing wheel bearing apparatus, and wheel bearing apparatus
JP5365256B2 (en) Wheel member for wheel support hub unit and manufacturing method thereof
JP2009287594A (en) Rolling bearing device and its manufacturing method
JP5423033B2 (en) Manufacturing method of wheel bearing device
JP6054124B2 (en) Wheel bearing device
JP6136653B2 (en) Manufacturing method of shaft member of wheel rolling bearing device, and manufacturing method of wheel rolling bearing device
JP2024006688A (en) Hub unit bearing and production method of hub unit bearing
JP2008064261A (en) Manufacturing method for outer ring of wheel supporting rolling bearing unit
JP2006334713A (en) Method for manufacturing driven wheel hub unit
JP2012184813A (en) Shaft member of rolling bearing for wheel and method for manufacturing the same
JP5446983B2 (en) Manufacturing method of hub unit

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080805

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080908

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110119

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110426

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110509

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140603

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees