JP2001180209A - Bearing unit for wheel with rotor for brake and manufacturing method therefor - Google Patents
Bearing unit for wheel with rotor for brake and manufacturing method thereforInfo
- Publication number
- JP2001180209A JP2001180209A JP37239399A JP37239399A JP2001180209A JP 2001180209 A JP2001180209 A JP 2001180209A JP 37239399 A JP37239399 A JP 37239399A JP 37239399 A JP37239399 A JP 37239399A JP 2001180209 A JP2001180209 A JP 2001180209A
- Authority
- JP
- Japan
- Prior art keywords
- wheel
- rotating
- braking
- hub
- rotor
- 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.)
- Withdrawn
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ロータ或はドラ
ム等の制動用回転体を支持固定した制動用回転体付車輪
用軸受ユニット、及び、この様な制動用回転体付車輪用
軸受ユニットの製造方法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing unit for a wheel with a rotating body for braking, which supports and fixes a rotating body for braking such as a rotor or a drum, and a bearing unit for a wheel with such a rotating body for braking. It relates to improvement of a manufacturing method.
【０００２】[0002]
【従来の技術】自動車の車輪を構成するホイール１及び
制動装置であるディスクブレーキを構成するロータ２
は、例えば図４に示す様な構造により、懸架装置を構成
するナックル３に回転自在に支承している。即ち、この
ナックル３に形成した円形の支持孔４部分に、本発明の
対象となる車輪用軸受ユニット５を構成する、静止輪で
ある外輪６を、複数本のボルト７により固定している。
一方、上記車輪用軸受ユニット５を構成するハブ８に上
記ホイール１及びロータ２を、複数本のスタッド９とナ
ット１０とにより結合固定している。2. Description of the Related Art A wheel 1 constituting a wheel of an automobile and a rotor 2 constituting a disc brake which is a braking device.
Is rotatably supported by a knuckle 3 constituting a suspension device, for example, by a structure as shown in FIG. That is, an outer ring 6 which is a stationary wheel and constitutes a wheel bearing unit 5 to which the present invention is applied is fixed to a circular support hole 4 formed in the knuckle 3 by a plurality of bolts 7.
On the other hand, the wheel 1 and the rotor 2 are connected and fixed to a hub 8 constituting the wheel bearing unit 5 by a plurality of studs 9 and nuts 10.
【０００３】上記外輪６の内周面には、それぞれが静止
側軌道面である複列の外輪軌道１１ａ、１１ｂを、外周
面には結合フランジ１２を、それぞれ形成している。こ
の様な外輪６は、この結合フランジ１２を上記ナックル
３に、上記各ボルト７で結合する事により、このナック
ル３に対し固定している。On the inner peripheral surface of the outer race 6, double rows of outer raceways 11a and 11b, each of which is a stationary raceway surface, are formed, and on the outer peripheral surface, a coupling flange 12 is formed. The outer ring 6 is fixed to the knuckle 3 by connecting the connecting flange 12 to the knuckle 3 with the bolts 7.
【０００４】これに対して、上記ハブ８の外周面の一部
で、上記外輪６の外端開口（外とは、自動車への組み付
け状態で幅方向外側となる部分を言い、図２〜３を除く
各図の左側。反対に、自動車への組み付け状態で幅方向
中央側となる、図２〜３を除く各図の右側を内と言
う。）から突出した部分には、取付フランジ１３を形成
している。上記ホイール１及びロータ２はこの取付フラ
ンジ１３の片側面（図示の例では外側面）に、上記各ス
タッド９とナット１０とにより、結合固定している。
又、上記ハブ８の中間部外周面で、上記複列の外輪軌道
１１ａ、１１ｂのうちの外側の外輪軌道１１ａに対向す
る部分には、内輪軌道１４ａを形成している。更に、上
記ハブ８の内端部に形成した小径段部１５に、内輪１６
を外嵌固定している。そして、この内輪１６の外周面に
形成した内輪軌道１４ｂを、上記複列の外輪軌道１１
ａ、１１ｂのうちの内側の外輪軌道１１ｂに対向させて
いる。On the other hand, a part of the outer peripheral surface of the hub 8 is an outer end opening of the outer ring 6 (the outer part is a part which is outward in the width direction when assembled to an automobile, and is shown in FIGS. On the other hand, the mounting flange 13 is provided at a portion protruding from the left side of each drawing except for FIGS. Has formed. The wheel 1 and the rotor 2 are connected and fixed to one side surface (outside surface in the illustrated example) of the mounting flange 13 by the studs 9 and the nuts 10.
An inner ring raceway 14a is formed on the outer peripheral surface of the intermediate portion of the hub 8 at a portion facing the outer raceway 11a outside the double row outer raceways 11a and 11b. Further, an inner ring 16 is attached to a small-diameter step portion 15 formed at the inner end of the hub 8.
Is externally fixed. Then, the inner ring raceway 14b formed on the outer peripheral surface of the inner ring 16 is connected to the double row outer ring raceway 11
a and 11b are opposed to the inner outer raceway 11b.
【０００５】これら各外輪軌道１１ａ、１１ｂと各内輪
軌道１４ａ、１４ｂとの間には、それぞれが転動体であ
る玉１７、１７を複数個ずつ、それぞれ保持器１８、１
８により保持した状態で転動自在に設けている。構成各
部材をこの様に組み合わせる事により、背面組み合わせ
である複列アンギュラ型の玉軸受を構成し、上記外輪６
の内側に上記ハブ８を、回転自在に、且つ、ラジアル荷
重及びスラスト荷重を支承自在に支持している。尚、上
記外輪６の両端部内周面と、上記ハブ８の中間部外周面
及び上記内輪１６の内端部外周面との間には、それぞれ
シールリング１９ａ、１９ｂを設けて、上記各玉１７、
１７を設けた空間と外部空間とを遮断している。更に、
図示の例は、駆動輪（ＦＲ車及びＲＲ車の後輪、ＦＦ車
の前輪、４ＷＤ車の全輪）用の車輪用軸受ユニット５で
ある為、上記ハブ８の中心部に、スプライン孔２０を形
成している。そして、このスプライン孔２０に、等速ジ
ョイント２１のスプライン軸２２を挿入している。[0005] Between each of the outer raceways 11a, 11b and each of the inner raceways 14a, 14b, a plurality of balls 17, 17 each of which is a rolling element, is provided with a plurality of cages 18, 1 respectively.
8 so that it can roll freely. By combining the constituent members in this manner, a double-row angular contact type ball bearing that is a back-to-back combination is formed.
The hub 8 is supported inside so as to be rotatable and capable of supporting a radial load and a thrust load. Seal rings 19a and 19b are provided between the inner peripheral surfaces of both ends of the outer ring 6 and the outer peripheral surface of the intermediate portion of the hub 8 and the inner peripheral portion of the inner ring 16, respectively. ,
17 and the external space are shut off. Furthermore,
Since the illustrated example is a wheel bearing unit 5 for drive wheels (rear wheels of FR and RR vehicles, front wheels of FF vehicles, and all wheels of 4WD vehicles), a spline hole 20 is formed in the center of the hub 8. Is formed. The spline shaft 22 of the constant velocity joint 21 is inserted into the spline hole 20.
【０００６】上述の様な車輪用転がり軸受ユニット５の
使用時には、図４に示す様に、外輪６をナックル３に固
定すると共に、ハブ８の取付フランジ１３に、図示しな
いタイヤを組み合わせたホイール１及びロータ２を固定
する。又、このうちのロータ２と、上記ナックル３に支
持した、図示しないサポート及びキャリパとを組み合わ
せて、制動用のディスクブレーキを構成する。制動時に
は、上記ロータ２を挟んで設けた１対のパッドをこのロ
ータ２の両側面に押し付ける。When the above-described rolling bearing unit 5 for a wheel is used, as shown in FIG. 4, the outer ring 6 is fixed to the knuckle 3 and the mounting flange 13 of the hub 8 is combined with a tire (not shown). And the rotor 2 is fixed. The rotor 2 is combined with a support (not shown) and a caliper (not shown) supported by the knuckle 3 to form a disc brake for braking. At the time of braking, a pair of pads provided so as to sandwich the rotor 2 is pressed against both side surfaces of the rotor 2.
【０００７】ところで、自動車の制動時にしばしば、ジ
ャダーと呼ばれる、不快な騒音を伴う振動が発生する事
が知られている。この様な振動の原因としては、ロータ
２の側面とパッドのライニングとの摩擦状態の不均一
等、各種の原因が知られているが、上記ロータ２の振れ
も、大きな原因となる事が知られている。即ち、このロ
ータ２の側面はこのロータ２の回転中心に対して、本来
直角となるべきものであるが、不可避的な製造誤差によ
り、完全に直角にする事は難しい。この結果、自動車の
走行時に上記ロータ２の側面は、多少とは言え、回転軸
方向（図４の左右方向）に振れる事が避けられない。こ
の様な振れ（図４の左右方向への変位量）が大きくなる
と、制動の為に１対のパッドのライニングを上記ロータ
２の両側面に押し付けた場合に、上記ジャダーが発生す
る。そして、上記各パッドのライニングとロータ２の両
側面との当接状態が不均一になり、その部分で上記ライ
ニングが偏摩耗する。[0007] By the way, it is known that vibrations accompanied by unpleasant noise, often called judder, are often generated when braking an automobile. There are various known causes of such vibrations, such as uneven friction between the side surface of the rotor 2 and the lining of the pad. However, it is known that the runout of the rotor 2 is also a major cause. Have been. That is, the side surface of the rotor 2 should be at right angles to the center of rotation of the rotor 2, but it is difficult to make it completely at right angles due to inevitable manufacturing errors. As a result, it is inevitable that the side surface of the rotor 2 swings in the direction of the rotation axis (the left-right direction in FIG. 4) when the vehicle is running. When such deflection (the amount of displacement in the left-right direction in FIG. 4) increases, the judder occurs when the linings of a pair of pads are pressed against both side surfaces of the rotor 2 for braking. Then, the contact state between the lining of each pad and both side surfaces of the rotor 2 becomes uneven, and the lining is unevenly worn at that portion.
【０００８】この様な原因で発生するジャダーを抑える
為には、上記ロータ２の側面の軸方向に亙る振れ（アキ
シアル振れ）を抑える（回転中心軸に対する側面の直角
度を向上させる）事が重要となる。そして、この振れを
抑える為には、上記ハブ８の回転中心に対する取付フラ
ンジ１３の取付面（上記取付フランジ１３の片側面）の
直角度と、この取付面自体の面精度とを向上させる必要
がある。これら直角度及び面精度に影響を及ぼす要素
は、それぞれ複数ずつ存在するが、特に影響の大きい要
素としては、直角度に関しては、上記取付面と軌道面
（外輪軌道１１ａ、１１ｂ及び内輪軌道１４ａ、１４
ｂ）との平行度が、面精度に就いては熱処理変形があ
る。又、このうちの平行度を高める為には、ハブ８の構
成各部のうち、上記取付フランジ１３の片側面と中間部
外周面に形成した内輪軌道１４ａ及び内端部に形成した
小径段部１５との位置関係、並びにこれら各部の形状及
び寸法を、精度良く仕上げる事が必要である。このうち
の内輪軌道１４ａ及び小径段部１５の形状及び寸法の精
度を、上記取付面との関係で高めれば、この取付面の上
記ハブ８の回転中心に対する直角度を向上させる事がで
きる。又、上記取付面から熱処理変形を取り除けば、こ
の取付面の面精度を向上させる事ができる。In order to suppress the judder generated due to such a cause, it is important to suppress the axial runout (axial runout) of the side surface of the rotor 2 (improve the perpendicularity of the side surface with respect to the rotation center axis). Becomes In order to suppress this run-out, it is necessary to improve the perpendicularity of the mounting surface of the mounting flange 13 (one side surface of the mounting flange 13) to the rotation center of the hub 8 and the surface accuracy of the mounting surface itself. is there. There are a plurality of elements each of which influences the squareness and the surface accuracy. Among the elements having a particularly large influence, the squareness and the mounting surface and the raceway surface (the outer raceways 11a and 11b and the inner raceway 14a, 14
As for the degree of parallelism with b), the surface precision has a heat treatment deformation. In order to increase the degree of parallelism, the inner ring raceway 14a formed on one side surface of the mounting flange 13 and the outer peripheral surface of the intermediate portion, and the small-diameter stepped portion 15 formed on the inner end portion, of the components of the hub 8, are provided. It is necessary to finish the positional relationship with the above, and the shapes and dimensions of these parts with high accuracy. If the accuracy of the shape and dimensions of the inner raceway 14a and the small-diameter step portion 15 is increased in relation to the mounting surface, the perpendicularity of the mounting surface to the rotation center of the hub 8 can be improved. Further, if the heat treatment deformation is removed from the mounting surface, the surface accuracy of the mounting surface can be improved.
【０００９】ロータ２の振れに結び付く、上記取付フラ
ンジ１３の振れを防止する為の技術としては、例えば特
開平１０−２１７００１号公報に記載されたものがあ
る。但し、この公報に記載された従来技術は、基準面と
して本来必要でない面を精密仕上する為、徒にコストが
嵩むだけでなく、構成各部を熱処理する事に就いての考
慮はなされていない。これに対して、上記内輪軌道１４
ａ及び小径段部１５には、表面を硬化させる為に、高周
波焼き入れ等の熱処理を施す必要がある。そして、これ
ら内輪軌道１４ａ及び小径段部１５の形状及び寸法は、
この様な熱処理に伴って多少なりとも変化する為、上記
公報に記載された従来技術では、上述の様に各部の精度
を十分に向上させる事は難しい。しかも、上記公報に記
載された発明の場合には、ハブの外周面に、それぞれが
このハブとは別体とされた１対の内輪を固定する構造で
ある為、これら各内輪の端面と内輪軌道との誤差等が、
取付フランジの取付面と内輪軌道との平行度の誤差とし
て入り込む。更には、ハブと内輪との当接部を、上記取
付フランジの取付面を基準として加工していない為、上
記取付面と内輪軌道との平行度を十分に向上させる事は
難しい。As a technique for preventing the mounting flange 13 from running, which is linked to the running of the rotor 2, there is a technique described in, for example, Japanese Patent Application Laid-Open No. Hei 10-217001. However, in the prior art described in this publication, since a surface which is not originally required as a reference surface is precisely finished, not only the cost is increased but also no consideration is given to heat treatment of each component. In contrast, the inner raceway 14
In order to harden the surface, heat treatment such as induction hardening or the like needs to be applied to a and the small-diameter stepped portion 15. The shapes and dimensions of the inner raceway 14a and the small-diameter step portion 15 are as follows.
As the heat treatment changes to some extent, it is difficult for the prior art described in the above publication to sufficiently improve the accuracy of each part as described above. In addition, in the case of the invention described in the above publication, a pair of inner rings, each of which is separate from the hub, is fixed to the outer peripheral surface of the hub. Error with the orbit,
It enters as an error in the degree of parallelism between the mounting surface of the mounting flange and the inner raceway. Furthermore, since the contact portion between the hub and the inner race is not machined with reference to the mounting surface of the mounting flange, it is difficult to sufficiently improve the parallelism between the mounting surface and the inner raceway.
【００１０】又、従来から、取付フランジ１３の振れと
ロータ２自体の形状誤差に基づく振れとを相殺する為、
車輪用軸受ユニット５とロータ２とを選択して組み合わ
せる場合もあった。ところが、この場合には組み合わせ
の為の選択作業が面倒になり、コストが嵩む原因とな
る。Conventionally, in order to cancel the runout of the mounting flange 13 and the runout based on the shape error of the rotor 2 itself,
In some cases, the wheel bearing unit 5 and the rotor 2 are selected and combined. However, in this case, the selection work for the combination is troublesome, which causes an increase in cost.
【００１１】[0011]
【先発明の説明】この様な事情に鑑みて考えられた車輪
用軸受ユニットとその製造方法として、特願平１１−３
８３２９号に係る発明がある。先ず、この先発明の実施
の形態の第１例に就いて、図５〜６により説明する。
尚、前述の図４に示した従来構造と同様の部分に関して
は、同一符号を付して重複する説明を省略する。静止側
周面である外輪６の内周面に形成した、それぞれが静止
側軌道面である複列の外輪軌道１１ａ、１１ｂを含む、
上記外輪６の中間部内周面で図５の上半部に斜格子で示
す部分は、高周波焼き入れにより、全周に亙り硬化させ
ている。DESCRIPTION OF THE PRIOR ART Japanese Patent Application No. 11-3 proposes a wheel bearing unit and a method of manufacturing the same in consideration of such circumstances.
There is an invention according to No. 8329. First, a first example of the embodiment of the present invention will be described with reference to FIGS.
The same parts as those in the conventional structure shown in FIG. 4 described above are denoted by the same reference numerals, and redundant description will be omitted. Including multiple rows of outer raceways 11a and 11b, each of which is a stationary raceway surface, formed on the inner circumferential surface of the outer race 6 which is a stationary circumferential surface.
The portion shown by the oblique lattice in the upper half of FIG. 5 on the inner peripheral surface of the intermediate portion of the outer ring 6 is hardened over the entire circumference by induction hardening.
【００１２】又、回転輪に相当するハブ８と内輪１６と
のうち、ハブ８の中間部外周面に直接内輪軌道１４ａを
形成すると共に、このハブ８の内端部に形成した小径段
部１５に、その外周面に内輪軌道１４ｂを形成した上記
内輪１６を外嵌固定している。この内輪１６は、ＳＵＪ
２の如き軸受鋼等の硬質金属により造り、心部まで焼き
入れ硬化させている。又、上記ハブ８の中間部外端寄り
部分で、上記外輪６の外端開口から突出した部分に取付
フランジ１３を設けて、車輪を構成するホイール１及び
制動用回転体であるロータ２（図４）或はドラムを結合
固定自在としている。この為に、上記取付フランジ１３
の円周方向複数個所で、上記ハブ８の回転中心をその中
心とする同一円周上に形成した複数の取付孔２３に、そ
れぞれスタッド２４の基端部を内嵌固定している。Further, of the hub 8 and the inner ring 16 corresponding to the rotating wheel, the inner ring raceway 14a is formed directly on the outer peripheral surface of the intermediate portion of the hub 8, and the small-diameter stepped portion 15 formed on the inner end of the hub 8 is formed. The inner race 16 having an inner raceway 14b formed on the outer peripheral surface thereof is externally fitted and fixed. This inner ring 16 is SUJ
2, and hardened and hardened to the core. A mounting flange 13 is provided at a portion protruding from an outer end opening of the outer race 6 at a portion near an outer end of the intermediate portion of the hub 8 so that a wheel 1 constituting a wheel and a rotor 2 which is a rotating body for braking (FIG. 4) Alternatively, the drum can be connected and fixed. For this reason, the mounting flange 13
At a plurality of locations in the circumferential direction, the base ends of the studs 24 are internally fitted and fixed to a plurality of mounting holes 23 formed on the same circumference with the center of rotation of the hub 8 as the center.
【００１３】又、上記ハブ８の外周面で図５〜６の上半
部に斜格子で示す部分は、高周波焼き入れにより、全周
に亙り硬化させている。このうち、上記取付フランジ１
３の基端部分は、走行時にこの取付フランジ１３に加わ
る大きなモーメントに拘らず、この基端部分が塑性変形
するのを防止する為に硬化させる。又、上記内輪軌道１
４ａ部分は、玉１７、１７との当接部に加わる大きな面
圧に拘らず、この内輪軌道１４ａに圧痕が形成されるの
を防止する為に硬化させる。又、上記小径段部１５は、
上記内輪１６から加わる大きなラジアル荷重に拘らず、
この小径段部１５が塑性変形するのを防止する為に硬化
させる。更には、この小径段部１５と上記内輪軌道１４
ａとの間部分は、走行時に加わる大きなモーメント荷重
やスラスト荷重に拘らず、この間部分が塑性変形するの
を防止する為に硬化させる。The portion of the outer peripheral surface of the hub 8 indicated by a diagonal lattice in the upper half of FIGS. 5 to 6 is hardened over the entire periphery by induction hardening. Of these, the mounting flange 1
The base end portion 3 is hardened to prevent the base end portion from being plastically deformed despite the large moment applied to the mounting flange 13 during traveling. In addition, the inner ring raceway 1
The portion 4a is hardened in order to prevent indentations from being formed on the inner raceway 14a regardless of the large surface pressure applied to the contact portions with the balls 17,17. The small-diameter step portion 15 is
Regardless of the large radial load applied from the inner ring 16,
The small-diameter stepped portion 15 is hardened to prevent plastic deformation. Further, the small-diameter step portion 15 and the inner raceway 14
The portion between a and a is hardened in order to prevent the portion from being plastically deformed irrespective of a large moment load or a thrust load applied during traveling.
【００１４】上述の様な車輪用軸受ユニット５に於い
て、上記ホイール１及びロータ２を結合固定する為の、
前記取付フランジ１３の外側面２５は、図５〜６の上半
部に斜格子で示した、上記ハブ８の中間部外周面を熱処
理の一種である高周波焼き入れ処理により硬化させた後
に、所定の形状に加工している。即ち、上記斜格子部分
に高周波熱処理を施して、この斜格子部分を硬化させる
と共に、上記ハブ８に熱処理に基づく変形が生じた後
に、上記外側面２５に旋削等の機械加工を施し、この外
側面２５を平坦面とする。In the wheel bearing unit 5 as described above, the wheel 1 and the rotor 2 are connected and fixed.
The outer surface 25 of the mounting flange 13 is hardened by induction hardening, which is a kind of heat treatment, on the outer peripheral surface of the middle portion of the hub 8 shown by oblique lattice in the upper half of FIGS. The shape is processed. That is, the oblique lattice portion is subjected to high-frequency heat treatment to harden the oblique lattice portion, and after the hub 8 is deformed due to the heat treatment, the outer surface 25 is subjected to machining such as turning. The side surface 25 is a flat surface.
【００１５】更に、上記ハブ８の中間部外周面に直接形
成した内輪軌道１４ａ、及びこのハブ８の内端部に形成
した小径段部１５の外周面及び段差面は、上記取付フラ
ンジ１３の外側面２５を平坦面に加工した後に、図６に
示す様に、この外側面２５を基準として所定の形状及び
寸法に加工する。即ち、この外側面２５にバッキングプ
レート２６を突き当てると共に、このバッキングプレー
ト２６と上記取付フランジ１３とを、磁気吸着力等によ
り結合させる。そして、このバッキングプレート２６を
回転させる事により上記ハブ８を回転させる。この際、
このハブ８の回転中心は、上記外側面２５に対し直交す
る軸となる。そこで、シュー２７（本発明の実施の形態
を示す図１〜２参照）を上記ハブ８の外周面に摺接さ
せ、このハブ８のラジアル方向に亙る位置決めを図りつ
つ、図６に破線を付した、上記内輪軌道１４ａと小径段
部１５の外周面及び段差面とに、研削加工或は精密旋削
加工の如き、これら各面の形状を所望にする為の機械加
工を施す。Further, the inner raceway 14a formed directly on the outer peripheral surface of the intermediate portion of the hub 8 and the outer peripheral surface and the step surface of the small-diameter stepped portion 15 formed on the inner end of the hub 8 are outside the mounting flange 13. After the side surface 25 is processed into a flat surface, as shown in FIG. That is, the backing plate 26 is abutted against the outer side surface 25, and the backing plate 26 and the mounting flange 13 are connected to each other by magnetic attraction. Then, the hub 8 is rotated by rotating the backing plate 26. On this occasion,
The center of rotation of the hub 8 is an axis orthogonal to the outer surface 25. Then, a shoe 27 (see FIGS. 1 and 2 showing an embodiment of the present invention) is slid on the outer peripheral surface of the hub 8 to position the hub 8 in the radial direction, while adding a broken line to FIG. The inner ring raceway 14a and the outer peripheral surface and the step surface of the small-diameter step portion 15 are subjected to mechanical processing such as grinding or precision turning to make the shapes of these surfaces desired.
【００１６】この様な機械加工は、上記外側面２５に対
し直交する軸を回転中心としつつ行なうので、この外側
面２５と、上記ハブ８の中間部外周面に直接形成した内
輪軌道１４ａ及び上記小径段部１５に外嵌した内輪１６
（図５）の外周面の内輪軌道１４ｂとの位置関係が、上
記高周波焼き入れ処理に基づく熱変形に拘らず、正規な
ものとなる。この結果、図５に示す様な車輪用軸受ユニ
ット５を組み立てた状態で、上記外側面２５の振れを僅
少に抑える事が可能になる。Since such machining is performed while using the axis orthogonal to the outer surface 25 as the center of rotation, the outer surface 25 and the inner raceway 14a formed directly on the outer peripheral surface of the intermediate portion of the hub 8 and the inner ring raceway 14a are formed. Inner ring 16 externally fitted to small diameter step 15
The positional relationship between the outer peripheral surface of FIG. 5 and the inner raceway 14b is normal regardless of the thermal deformation based on the induction hardening process. As a result, in a state where the wheel bearing unit 5 as shown in FIG. 5 is assembled, the runout of the outer side surface 25 can be slightly suppressed.
【００１７】更に、前記特願平１１−３８３２９号で
は、図７に示す様な製造方法も提案されている。この先
発明の実施の形態の第２例の場合には、ハブ８の外周面
に設けた取付フランジ１３の外側面２５を平坦面に仕上
げた後、このハブ８の外端部をチャック２８により把持
した状態で、このハブ８の中間部外周面に直接形成した
内輪軌道１４ａ、及びこのハブ８の内端部に形成した小
径段部１５の外周面及び段差面を、所定の形状及び寸法
に加工する。この際、上記チャック２８の軸方向片面
（図７の右端面）は上記外側面２５に突き当てて、この
外側面２５を加工の為の基準面として利用する。又、上
記チャック２８の内周面は、上記ハブ８の外端部に形成
した円筒部２９の外周面に当接させて、このハブ８のラ
ジアル方向に亙る変位を抑える。この様な本例の場合に
は、上記ハブ８の中間部外周面に直接形成した内輪軌道
１４ａ及びこのハブ８の内端部に形成した小径段部１５
の外周面のラジアル方向位置をより厳密に規制できる。
この結果、ホイール１及びロータ２（図４）のラジアル
方向に亙る変位を抑えて、自動車の走行時の振動を抑え
る事ができる。Further, Japanese Patent Application No. 11-38329 proposes a manufacturing method as shown in FIG. In the case of the second embodiment of the present invention, after the outer surface 25 of the mounting flange 13 provided on the outer peripheral surface of the hub 8 is finished to a flat surface, the outer end of the hub 8 is gripped by the chuck 28. In this state, the inner raceway 14a formed directly on the outer peripheral surface of the intermediate portion of the hub 8 and the outer peripheral surface and the step surface of the small-diameter step portion 15 formed on the inner end of the hub 8 are processed into predetermined shapes and dimensions. I do. At this time, one axial surface (the right end surface in FIG. 7) of the chuck 28 abuts against the outer surface 25, and the outer surface 25 is used as a reference surface for processing. The inner peripheral surface of the chuck 28 is brought into contact with the outer peripheral surface of a cylindrical portion 29 formed at the outer end of the hub 8 to suppress the displacement of the hub 8 in the radial direction. In the case of this embodiment, the inner raceway 14a formed directly on the outer peripheral surface of the intermediate portion of the hub 8 and the small-diameter step portion 15 formed on the inner end of the hub 8
, The radial position of the outer peripheral surface can be more strictly regulated.
As a result, the displacement of the wheel 1 and the rotor 2 (FIG. 4) in the radial direction can be suppressed, and the vibration of the automobile during traveling can be suppressed.
【００１８】[0018]
【発明が解決しようとする課題】上述の様な先発明の車
輪用軸受ユニットとその製造方法によれば、前述した特
開平１０−２１７００１号公報に記載された方法に比べ
て、制動時に発生する不快な騒音や振動の抑制を、特に
コストを高くする事なく有効に行なえる。但し、上記先
発明の場合も、取付フランジ１３とロータ２等の制動用
回転体との取付部の組み付け誤差を相殺するものではな
い為、これら騒音や振動の抑制を、より有効にしかも低
コストで行なう為には、更なる改良が望まれる。According to the above-described wheel bearing unit and the method of manufacturing the same according to the prior invention, the above-described method is generated during braking as compared with the method described in Japanese Patent Application Laid-Open No. 10-21701. Unpleasant noise and vibration can be effectively suppressed without increasing the cost. However, even in the case of the above-mentioned invention, since the mounting error of the mounting portion between the mounting flange 13 and the braking rotating body such as the rotor 2 is not offset, the suppression of these noises and vibrations can be more effectively performed at a lower cost. In order to do so, further improvements are desired.
【００１９】即ち、前述した先発明の場合には、ハブ８
及び内輪１６の回転中心に対する上記取付フランジ１３
の外側面２５の直角度を向上させる事はできるが、この
取付フランジ１３とロータ２との取付部に組み付け誤差
が存在した場合には、この組み付け誤差がそのままこの
ロータ２の両側面の直角度の悪化に結び付き、ジャダー
を発生させる。従って、このロータ２の両側面の直角度
を良好にする為には、上記取付部の組み付け誤差をなく
す必要がある。そして、この組み付け誤差をなくす為に
は、上記取付フランジ１３及びロータ２の形状精度等を
向上させる必要があり、その分、加工コストが嵩む。本
発明は、この様な事情に鑑みて、上記取付フランジ１３
とロータ２等の制動用回転体との取付部の組み付け誤差
が、このロータ２の両側面の直角度の悪化等、ジャダー
に結び付く品質の劣化につながらない、構造及び製造方
法を実現するものである。That is, in the case of the above-mentioned invention, the hub 8
And the mounting flange 13 with respect to the rotation center of the inner ring 16.
Can be improved, but if there is an assembling error in the mounting portion between the mounting flange 13 and the rotor 2, the assembling error is directly applied to the squareness of both side surfaces of the rotor 2. It leads to the deterioration of the skin and generates judder. Therefore, in order to improve the perpendicularity of both side surfaces of the rotor 2, it is necessary to eliminate the mounting error of the mounting portion. Then, in order to eliminate the assembling error, it is necessary to improve the shape accuracy and the like of the mounting flange 13 and the rotor 2, and the processing cost increases accordingly. In view of such circumstances, the present invention has
The present invention realizes a structure and a manufacturing method in which an assembling error of an attachment portion between the rotor 2 and a braking rotating body such as the rotor 2 does not lead to deterioration of quality linked to judder such as deterioration of a right angle of both side surfaces of the rotor 2. .
【００２０】[0020]
【課題を解決するための手段】本発明の制動用回転体付
車輪用軸受ユニットとその製造方法のうち、請求項１、
３に記載した制動用回転体付車輪用軸受ユニットは何れ
も、前述の図４に示した、従来から知られている制動用
回転体付車輪用軸受ユニットと同様に、静止側周面に静
止側軌道面を有し、使用状態で懸架装置に支持固定され
る静止輪と、回転側周面にその表面を熱処理硬化された
回転側軌道面を有する回転輪と、この回転側軌道面と上
記静止側軌道面との間に設けられた複数個の転動体と、
上記回転輪の外周面に設けられた取付フランジと、この
取付フランジの片側面に結合固定された、制動時に摩擦
材を押し付けられる被制動面を有する、ロータ或はドラ
ム等の制動用回転体とを備える。According to a first aspect of the present invention, there is provided a bearing unit for a wheel with a rotating body for braking and a method of manufacturing the same.
3, the bearing unit for a wheel with a rotating body for braking shown in FIG. 4 is similar to the bearing unit for a wheel with a rotating body for braking, which is conventionally known, as shown in FIG. A stationary wheel having a side raceway surface, supported and fixed to a suspension device in use, a rotating wheel having a rotating side raceway surface whose surface is heat-treated and cured on the rotating side peripheral surface, A plurality of rolling elements provided between the stationary side raceway surface,
A mounting flange provided on the outer peripheral surface of the rotating wheel, and a braking rotary body such as a rotor or a drum, having a surface to be braked which is fixedly coupled to one side of the mounting flange and against which a friction material is pressed during braking. Is provided.
【００２１】特に、請求項１に記載した制動用回転体付
車輪用軸受ユニットに於いては、上記回転側軌道面は、
上記取付フランジの片側面に上記制動用回転体を結合固
定した状態で、この制動用回転体の被制動面を基準とし
て所定の形状及び寸法に加工されたものである。In particular, in the bearing unit for a wheel with a rotating body for braking according to the first aspect, the rotating side raceway surface includes:
The braking rotator is formed into a predetermined shape and size with the braking rotator coupled and fixed to one side surface of the mounting flange with reference to the surface to be braked of the braking rotator.
【００２２】そして、請求項２に記載した制動用回転体
付車輪用軸受ユニットの製造方法は、上述の様な請求項
１に記載した制動用回転体付車輪用軸受ユニットを製造
すべく、回転輪のうちで回転側軌道面部分を熱処理硬化
させた後、上記取付フランジの片側面に上記制動用回転
体を結合固定する。次いで、上記回転側軌道面を、この
制動用回転体の被制動面を基準面として利用する事によ
り、所定の形状及び寸法に加工する。According to a second aspect of the present invention, there is provided a method of manufacturing a bearing unit for a wheel with a rotating body for braking, in order to manufacture the bearing unit for a wheel with a rotating body for braking according to the first aspect. After the rotation-side raceway portion of the ring is heat-treated and hardened, the braking rotary body is fixedly connected to one side surface of the mounting flange. Next, the rotation-side raceway surface is processed into a predetermined shape and size by using the braked surface of the rotating body for braking as a reference surface.
【００２３】又、請求項３に記載した制動用回転体付車
輪用軸受ユニットに於いては、上記制動用回転体の被制
動面は、上記静止輪のうちの上記懸架装置に対する取付
面を基準として所定の形状及び寸法に加工されたもので
ある。In the bearing unit for a wheel with a rotating body for braking according to a third aspect of the present invention, the surface to be braked of the rotating body for braking is based on a mounting surface of the stationary wheel with respect to the suspension device. Is processed into a predetermined shape and dimensions.
【００２４】更に、請求項４に記載した制動用回転体付
車輪用軸受ユニットの製造方法は、上述の様な請求項３
に記載した制動用回転体付車輪用軸受ユニットを製造す
べく、上記回転輪のうちで回転側軌道面部分を熱処理硬
化させてからこの回転側軌道面部分の仕上加工を施す。
更に、上記回転輪と静止輪とを複数の転動体を介して組
み合わせると共に、取付フランジの側面に上記制動用回
転体を結合固定する。次いで、この制動用回転体の被制
動面を、上記静止輪のうちの上記懸架装置に対する取付
面を基準面として利用する事により、所定の形状及び寸
法に加工する。Further, the method for manufacturing a wheel bearing unit with a rotating wheel for braking according to claim 4 is as described above.
In order to produce the bearing unit for a wheel with a rotating body for braking described in 1 above, the rotating raceway surface portion of the rotating wheel is heat-treated and hardened, and then the rotating raceway surface portion is subjected to finish processing.
Further, the rotating wheel and the stationary wheel are combined via a plurality of rolling elements, and the braking rotary body is fixedly connected to the side surface of the mounting flange. Next, the surface to be braked of the rotating body for braking is processed into a predetermined shape and dimensions by using a mounting surface of the stationary wheel with respect to the suspension device as a reference surface.
【００２５】[0025]
【作用】上述の様に構成する制動用回転体付車輪用軸受
ユニットとその製造方法によれば、回転輪の外周面に設
けた取付フランジとロータ等の制動用回転体との取付部
の組み付け誤差が、ロータの両側面の直角度の悪化等、
この制動用回転体の被制動面の振れにつながらない。即
ち、請求項１〜４の何れに記載した構造或は製造方法の
場合も、回転輪と制動用回転体とを、使用状態と同様に
結合した状態で、回転側軌道面（請求項１〜２の場合）
又は被制動面（請求項３〜４の場合）を加工する。従っ
て、上記取付部の組み付け誤差は、回転側軌道面と被制
動面との位置関係に全く影響しなくなって、上記取付フ
ランジ及び制動用回転体の一部で上記取付部を構成する
部分の形状精度を特に向上させる必要がなくなる。According to the above-described wheel bearing unit with a rotating body for braking and the method of manufacturing the same, assembling of the mounting portion between the mounting flange provided on the outer peripheral surface of the rotating wheel and the rotating body for braking such as a rotor. The error is worsening of the squareness of both sides of the rotor.
This does not lead to the swing of the braked surface of the rotating body for braking. That is, in the case of the structure or the manufacturing method according to any one of claims 1 to 4, in a state where the rotating wheel and the rotating body for braking are connected in the same manner as in use, the rotating side raceway surface (claims 1 to 4). 2)
Alternatively, the surface to be braked (in the case of claims 3 and 4) is processed. Therefore, the mounting error of the mounting portion has no effect on the positional relationship between the rotating side raceway surface and the surface to be braked, and the shape of the mounting flange and a portion of the braking rotary body that constitutes the mounting portion. There is no need to particularly improve the accuracy.
【００２６】[0026]
【発明の実施の形態】図１〜２は、請求項１〜２に対応
する、本発明の実施の形態の第１例を示している。尚、
本発明の特徴は、ハブ８の外周面に形成した取付フラン
ジ１３と、制動用回転体であるロータ２との取付部の組
み付け誤差に拘らず、このロータ２の両側面３０、３０
の、上記ハブ８の回転中心軸αに対する直角度を良好に
する点にある。その他の部分に就いては、前述の図４に
示した従来構造、或は前述の図５〜７に示した先発明の
場合と同様であるから、同様部分に関する図示並びに説
明は省略若しくは簡略にし、以下、本発明の特徴部分を
中心に説明する。1 and 2 show a first example of an embodiment of the present invention corresponding to claims 1 and 2. FIG. still,
A feature of the present invention is that both sides 30, 30 of the rotor 2 are irrespective of a mounting error of a mounting portion between the mounting flange 13 formed on the outer peripheral surface of the hub 8 and the rotor 2 which is a braking rotating body.
Is to improve the perpendicularity of the hub 8 to the rotation center axis α. The other parts are the same as those in the conventional structure shown in FIG. 4 described above or in the case of the prior invention shown in FIGS. 5 to 7 described above, and the illustration and description of the same parts are omitted or simplified. Hereinafter, a description will be given mainly of the characteristic portions of the present invention.
【００２７】内輪１６（図４〜５参照）と共に回転輪に
相当するハブ８の中間部外端寄り部分に設けた取付フラ
ンジ１３に、制動用回転体であるロータ２を、複数ずつ
のスタッド２４とナット３１とにより結合している。
又、上記ハブ８の外周面で図１の上半部に斜格子で示す
部分は、高周波焼き入れにより、全周に亙り硬化させて
いる。又、上記ロータ２の両側面３０、３０は、このロ
ータ２を製造する過程で、所望の形状に加工している。
即ち、これら両側面３０、３０は、互いに平行にすると
共に、上記取付フランジ１３に結合固定する為、内周寄
り部分に設けた結合フランジ部３２の両側面に対しても
平行にしている。但し、この結合フランジ部３２の両側
面と上記両側面３０、３０との平行度に関しては、あま
り厳密でなくても良い。The rotor 2 which is a rotating body for braking is provided with a plurality of studs 24 on a mounting flange 13 provided near the outer end of the hub 8 corresponding to the rotating wheel together with the inner ring 16 (see FIGS. 4 and 5). And the nut 31.
A portion of the outer peripheral surface of the hub 8 indicated by a diagonal lattice in the upper half of FIG. 1 is hardened over the entire periphery by induction hardening. Further, both side surfaces 30, 30 of the rotor 2 are processed into a desired shape in the process of manufacturing the rotor 2.
That is, the both side surfaces 30, 30 are parallel to each other, and are also parallel to both side surfaces of the connecting flange portion 32 provided on the inner peripheral portion in order to be fixedly connected to the mounting flange 13. However, the degree of parallelism between both side surfaces of the coupling flange portion 32 and the both side surfaces 30, 30 may not be very strict.
【００２８】上述の様にして、上記ハブ８の外周面を硬
化させると共に、上記取付フランジ１３にロータ２を結
合固定したならば、このロータ２の何れかの側面３０を
基準として、上記ハブ８の中間部外周面に直接形成した
内輪軌道１４ａ、及びこのハブ８の内端部に形成した小
径段部１５の外周面及び段差面を、所定の形状及び寸法
に加工する。即ち、上記ロータ２の何れかの側面（図示
の例では外側面）３０にバッキングプレート２６を突き
当てると共に、このバッキングプレート２６と上記ロー
タ２とを、磁気吸着力等により結合させる。そして、こ
のバッキングプレート２６を回転させる事により上記ハ
ブ８を回転させる。この際、このハブ８の回転中心は、
上記ロータ２の両側面３０、３０に対し直交する軸とな
る。そこで、シュー２７を上記ハブ８の外周面に摺接さ
せ、このハブ８のラジアル方向に亙る位置決めを図りつ
つ、図１に破線を付した、上記内輪軌道１４ａと小径段
部１５の外周面及び段差面とに、研削加工或は精密旋削
加工の如き、これら各面の形状を所望にする為の機械加
工を施す。尚、上記ハブ８の外周面で上記シュー２７を
摺接させる位置は、図１に示した位置に限らず、上記内
輪軌道１４ａ或は小径段部１５の外周面等、適宜変更す
る。要は、その時点で上記機械加工を施す部分の直径方
向反対位置に、上記シュー２７を突き当てる。As described above, when the outer peripheral surface of the hub 8 is hardened and the rotor 2 is fixedly connected to the mounting flange 13, the hub 8 is fixed with reference to any side surface 30 of the rotor 2. The inner ring raceway 14a formed directly on the outer peripheral surface of the intermediate portion and the outer peripheral surface and the step surface of the small-diameter stepped portion 15 formed on the inner end of the hub 8 are processed into predetermined shapes and dimensions. That is, the backing plate 26 is brought into contact with one of the side surfaces (the outer side surface in the illustrated example) 30 of the rotor 2, and the backing plate 26 and the rotor 2 are coupled by a magnetic attraction force or the like. Then, the hub 8 is rotated by rotating the backing plate 26. At this time, the rotation center of the hub 8 is
The axis is orthogonal to both side surfaces 30 of the rotor 2. Therefore, the shoe 27 is slid in contact with the outer peripheral surface of the hub 8, and while positioning the hub 8 in the radial direction, the outer peripheral surfaces of the inner raceway 14a and the small-diameter step portion 15, which are indicated by broken lines in FIG. The step surfaces are subjected to machining such as grinding or precision turning to make the shape of each surface desired. The position at which the shoe 27 slides on the outer peripheral surface of the hub 8 is not limited to the position shown in FIG. 1, but may be changed as appropriate, such as the outer peripheral surface of the inner raceway 14a or the small diameter step portion 15. In short, the shoe 27 is abutted at a position diametrically opposite to the portion to be machined at that time.
【００２９】この様な機械加工は、上記ロータ２の両側
面３０、３０に対し直交する軸を回転中心としつつ行な
うので、これら両側面３０、３０と、上記ハブ８の中間
部外周面に直接形成した内輪軌道１４ａ及び上記小径段
部１５に外嵌した内輪１６（図４〜５）の外周面の内輪
軌道１４ｂとの位置関係が、上記高周波焼き入れ処理に
基づく熱変形に拘らず、正規なものとなる。この結果、
図５に示す様な車輪用軸受ユニット５を組み立てた状態
で、この車輪用軸受ユニット５により回転自在に支持さ
れたロータ２の両側面３０、３０の振れを僅少に抑える
事が可能になる。Since such machining is performed while using the axes perpendicular to the both sides 30, 30 of the rotor 2 as the center of rotation, the both sides 30, 30 and the outer peripheral surface of the intermediate portion of the hub 8 are directly applied. The positional relationship between the formed inner raceway 14a and the inner raceway 14b on the outer peripheral surface of the inner race 16 (FIGS. 4 and 5) fitted to the small-diameter step portion 15 is normal regardless of the thermal deformation based on the induction hardening process. It becomes something. As a result,
In a state where the wheel bearing unit 5 as shown in FIG. 5 is assembled, it is possible to minimize the run-out of the both side surfaces 30, 30 of the rotor 2 rotatably supported by the wheel bearing unit 5.
【００３０】しかも、このロータ２の結合フランジ部３
２と上記ハブ８側の取付フランジ１３との取付部の組み
付け誤差は、（上記組み付け誤差が極端に悪くない限
り）回転側軌道面である上記内輪軌道１４ａ（及び内輪
１６の外周面に形成した内輪軌道１４ｂ）と、被制動面
である上記ロータ２の両側面３０、３０との位置関係に
全く影響しなくなる。従って、上記結合フランジ部３２
及び上記取付フランジ１３の形状精度を特に向上させる
必要がなくなる。この結果、上記ロータ２の両側面３
０、３０の振れを僅少に抑える為に要するコストを十分
に低く抑える事ができる。Moreover, the coupling flange 3 of the rotor 2
The assembling error of the mounting portion between the mounting ring 2 and the mounting flange 13 on the hub 8 side is formed on the inner raceway 14a (and the outer peripheral surface of the inner race 16), which is the rotating raceway surface (unless the assembling error is not extremely bad). The positional relationship between the inner raceway 14b) and the side surfaces 30, 30 of the rotor 2, which is the surface to be braked, is not affected at all. Therefore, the connection flange 32
Further, it is not necessary to particularly improve the shape accuracy of the mounting flange 13. As a result, both side surfaces 3 of the rotor 2
The cost required to minimize the fluctuations of 0 and 30 can be kept sufficiently low.
【００３１】次に、図３は、請求項３〜４に対応する、
本発明の実施の形態の第２例を示している。本例の場合
は、上述した第１例の場合とは逆に、制動用回転体の被
制動面である、ロータ２の両側面３０、３０を、静止輪
である外輪６のうちで、懸架装置を構成するナックル３
（図４参照）に対する取付面を基準として所定の形状及
び寸法に加工している。Next, FIG. 3 corresponds to claims 3-4.
9 shows a second example of the embodiment of the present invention. In the case of this example, on the contrary to the case of the above-described first example, both side surfaces 30, 30 of the rotor 2, which are surfaces to be braked of the rotating body for braking, are suspended from the outer ring 6, which is a stationary wheel. Knuckle 3 that constitutes the device
It is machined to a predetermined shape and dimensions based on the mounting surface for (see FIG. 4).
【００３２】即ち、本例の場合には、先ず、ハブ８のう
ちで回転側軌道面である内輪軌道１４ａを含む部分を熱
処理硬化させてから、この内輪軌道１４ａを含む、熱処
理硬化させた部分のうちで必要部分の仕上加工を施す。
この様な熱処理硬化並びに仕上加工は、例えば、前述の
図５〜６又は図７に示した、先発明の方法により行な
う。この様にして上記ハブ８の必要個所の加工を行なっ
たならば、このハブ８と、静止輪である外輪６とを、そ
れぞれが転動体である複数の玉１７、１７を介して組み
合わせ、車輪用軸受ユニット５を構成する。その後、上
記ハブ８の外周面に設けた取付フランジ１３の外側面
（図３の上面）に、制動用回転体である上記ロータ２
を、複数のスタッド２４とナット３１とにより結合固定
する。尚、図示の例では上記取付フランジ１３の外側面
に、上記ロータ２に加えて、このロータ２を回転駆動す
る為の駆動用治具３３も結合固定している。この駆動用
治具３３は、次述する様にロータ２の両側面３０、３０
に仕上加工を施した後、上記取付フランジ１３から取り
外す。尚、この様な駆動用治具３３は、上記ロータ２に
結合固定するのではなく、磁気吸着力等により着脱する
事もできる。That is, in the case of the present embodiment, first, the portion of the hub 8 including the inner raceway 14a, which is the rotating raceway surface, is heat-hardened, and then the heat-hardened portion including the inner raceway 14a. Of the required part is subjected to finish processing.
Such heat treatment hardening and finishing are performed, for example, by the method of the present invention shown in FIG. After the necessary portions of the hub 8 have been machined in this way, the hub 8 and the outer ring 6, which is a stationary wheel, are combined via a plurality of balls 17, 17, each of which is a rolling element, The bearing unit 5 is constituted. Then, the rotor 2 as a braking rotating body is provided on the outer surface (the upper surface in FIG. 3) of the mounting flange 13 provided on the outer peripheral surface of the hub 8.
Are fixedly connected by a plurality of studs 24 and nuts 31. In the illustrated example, in addition to the rotor 2, a driving jig 33 for rotationally driving the rotor 2 is fixedly connected to the outer surface of the mounting flange 13. The driving jig 33 is provided on both sides 30, 30 of the rotor 2 as described below.
, And then detached from the mounting flange 13. Note that such a driving jig 33 can also be attached and detached by magnetic attraction instead of being fixedly connected to the rotor 2.
【００３３】何れにしても、上述の様に取付フランジ１
３に上記ロータ２を結合固定したならば、このロータ２
の両側面３０、３０を所定の形状及び寸法に加工する作
業を、上記外輪６のうちで懸架装置を構成するナックル
３（図４）に対する取付面を基準面として利用する事に
より行なう。この為に本例の場合には、上記外輪６の内
端部（図３の下端部）を支持具３４に形成した支持孔３
５にがたつきなく内嵌すると共に、この外輪６の外周面
に形成した結合フランジ１２の片側面（図３の下面）を
上記支持具３４の上面に突き当て、ボルト３６によりこ
の結合フランジ１２をこの支持具３４に結合固定する。
そして、図示しない駆動装置により上記ハブ８並びに上
記ロータ２を、上記駆動用治具３３を介して回転駆動し
つつ、精密加工バイト等の工具３７、３７により、上記
ロータ２の両側面３０、３０に仕上加工を施す。勿論、
これら工具３７、３７は、上記支持具３４の上面に対し
平行に移動しつつ、上記両側面３０、３０に仕上加工を
施す。In any case, as described above, the mounting flange 1
3 and the rotor 2 is fixedly connected thereto.
The work of processing both side surfaces 30, 30 into a predetermined shape and dimensions is performed by using a mounting surface of the outer ring 6 with respect to the knuckle 3 (FIG. 4) constituting the suspension device as a reference surface. For this reason, in the case of this example, the inner end (the lower end in FIG. 3) of the outer race 6 is formed in the support hole 3 formed in the support 34.
5, and one side (the lower surface in FIG. 3) of the coupling flange 12 formed on the outer peripheral surface of the outer ring 6 is abutted against the upper surface of the support member 34. Is fixedly connected to the support 34.
Then, while rotating the hub 8 and the rotor 2 via the driving jig 33 by a driving device (not shown), the both sides 30, 30 of the rotor 2 by tools 37, 37 such as precision machining tools. Finish processing. Of course,
These tools 37, 37 perform finishing on the both side surfaces 30, 30 while moving parallel to the upper surface of the support 34.
【００３４】前記車輪用軸受ユニット５は前述した先発
明の方法により造られており、上記ハブ８の回転中心に
対する上記取付フランジ１３の外側面（図３の上面）の
直角度は優れている。又、上記ハブ８の回転中心と上記
外輪６の中心軸とを一致させる事、並びにこの外輪６の
中心軸に対して上記結合フランジ１２の結合面（図３の
下面）の直角度を確保する事は、従来から一般的に知ら
れている技術で十分に行なえる。従って、上記取付フラ
ンジ１３の外側面と上記結合フランジ１２の結合面との
平行度は、上記先発明の方法並びに従来から一般的に知
られている技術を組み合わせる事により、十分に行なえ
る。これに加えて本例の場合には、上述の様に、上記ハ
ブ８並びに上記ロータ２を回転駆動しつつ、このロータ
２の両側面３０、３０の仕上加工を施す為、上記ロータ
２の内周寄り部分に設けた結合フランジ部３２及び上記
取付フランジ１３の形状精度を特に向上させる事なく、
このロータ２の両側面３０、３０と上記結合フランジ１
２の結合面との平行度を十分に確保できる。この結果、
上記ロータ２の両側面３０、３０の振れを僅少に抑える
為に要するコストを十分に低く抑える事ができる。The wheel bearing unit 5 is manufactured by the above-described method of the present invention, and the perpendicularity of the outer surface (the upper surface in FIG. 3) of the mounting flange 13 to the center of rotation of the hub 8 is excellent. Further, the center of rotation of the hub 8 and the central axis of the outer ring 6 are made to coincide with each other, and the perpendicularity of the coupling surface (the lower surface in FIG. 3) of the coupling flange 12 to the central axis of the outer ring 6 is ensured. Things can be done well with techniques generally known in the art. Therefore, the parallelism between the outer surface of the mounting flange 13 and the coupling surface of the coupling flange 12 can be sufficiently achieved by combining the above-mentioned method of the present invention and a generally known technique. In addition to this, in the case of the present embodiment, as described above, while the hub 8 and the rotor 2 are driven to rotate, the both side surfaces 30, 30 of the rotor 2 are subjected to finish processing. Without particularly improving the shape accuracy of the coupling flange portion 32 provided on the peripheral portion and the mounting flange 13,
Both side surfaces 30, 30 of the rotor 2 and the connecting flange 1
The degree of parallelism with the coupling surface 2 can be sufficiently ensured. As a result,
The cost required for minimizing the deflection of both side surfaces 30, 30 of the rotor 2 can be sufficiently reduced.
【００３５】[0035]
【発明の効果】本発明の制動用回転体付車輪用軸受ユニ
ットとその製造方法は、以上に述べた通り構成され作用
するので、制動時に発生する不快な騒音や振動の抑制
を、特にコストを高くする事なく行なえる。The bearing unit for a wheel with a rotating body for braking and the method of manufacturing the same according to the present invention are constructed and operated as described above, so that unpleasant noise and vibration generated at the time of braking can be suppressed, in particular, cost is reduced. It can be done without raising.
【図１】本発明の実施の形態の第１例を示す要部断面
図。FIG. 1 is an essential part cross-sectional view showing a first example of an embodiment of the present invention.
【図２】図１のＡ矢視図。FIG. 2 is a view taken in the direction of arrow A in FIG. 1;
【図３】本発明の実施の形態の第２例で、制動用回転体
であるロータの両側面を加工する状態を示す断面図。FIG. 3 is a sectional view showing a state in which both side surfaces of a rotor serving as a braking rotating body are machined in a second example of the embodiment of the present invention.
【図４】本発明の対象となる制動用回転体付車輪用軸受
ユニットの組み付け状態の１例を示す断面図。FIG. 4 is a cross-sectional view showing an example of an assembled state of a wheel bearing unit with a rotating body for braking according to the present invention.
【図５】先発明の実施の形態の第１例を示す断面図。FIG. 5 is a sectional view showing a first example of the embodiment of the invention.
【図６】この第１例でハブの外周面を加工する状態を示
す断面図。FIG. 6 is a sectional view showing a state in which the outer peripheral surface of the hub is machined in the first example.
【図７】先発明の実施の形態の第２例でハブの外周面を
加工する状態を示す断面図。FIG. 7 is a sectional view showing a state in which the outer peripheral surface of the hub is machined in the second example of the embodiment of the present invention.
１ ホイール ２ ロータ ３ ナックル ４ 支持孔 ５ 車輪用軸受ユニット ６ 外輪 ７ ボルト ８ ハブ ９ スタッド １０ ナット １１ａ、１１ｂ 外輪軌道 １２ 結合フランジ １３ 取付フランジ １４ａ、１４ｂ 内輪軌道 １５ 小径段部 １６ 内輪 １７ 玉 １８ 保持器 １９ａ、１９ｂ シールリング ２０ スプライン孔 ２１ 等速ジョイント ２２ スプライン軸 ２３ 取付孔 ２４ スタッド ２５ 外側面 ２６ バッキングプレート ２７ シュー ２８ チャック ２９ 円筒部 ３０ 側面 ３１ ナット ３２ 結合フランジ部 ３３ 駆動用治具 ３４ 支持具 ３５ 支持孔 ３６ ボルト ３７ 工具 Reference Signs List 1 wheel 2 rotor 3 knuckle 4 support hole 5 wheel bearing unit 6 outer ring 7 bolt 8 hub 9 stud 10 nut 11a, 11b outer ring track 12 connecting flange 13 mounting flange 14a, 14b inner ring track 15 small diameter step 16 inner ring 17 ball 18 holding Apparatus 19a, 19b Seal ring 20 Spline hole 21 Constant velocity joint 22 Spline shaft 23 Mounting hole 24 Stud 25 Outer side surface 26 Backing plate 27 Shoe 28 Chuck 29 Cylindrical portion 30 Side surface 31 Nut 32 Coupling flange portion 33 Driving jig 34 Support 35 Support hole 36 Bolt 37 Tool
Claims (4)
状態で懸架装置に支持固定される静止輪と、回転側周面
にその表面を熱処理硬化された回転側軌道面を有する回
転輪と、この回転側軌道面と上記静止側軌道面との間に
設けられた複数個の転動体と、上記回転輪の外周面に設
けられた取付フランジと、この取付フランジの片側面に
結合固定された、制動時に摩擦材を押し付けられる被制
動面を有する制動用回転体とを備えた制動用回転体付車
輪用軸受ユニットに於いて、上記回転側軌道面は、上記
取付フランジの片側面に上記制動用回転体を結合固定し
た状態で、この制動用回転体の被制動面を基準として所
定の形状及び寸法に加工されたものである事を特徴とす
る制動用回転体付車輪用軸受ユニット。1. A stationary wheel having a stationary raceway surface on a stationary peripheral surface and supported and fixed to a suspension device in use, and a rotating raceway surface whose surface is heat-hardened on a rotating peripheral surface. A rotating wheel, a plurality of rolling elements provided between the rotating side raceway surface and the stationary side raceway surface, a mounting flange provided on an outer peripheral surface of the rotating ring, and one side of the mounting flange. And a brake rotating body having a braking surface against which a friction material is pressed during braking, wherein the rotating-side raceway surface is a piece of the mounting flange. The wheel with a brake rotating body, characterized in that the brake rotary body is processed into a predetermined shape and dimensions based on a surface to be braked of the brake rotary body in a state where the brake rotary body is fixedly connected to a side surface. Bearing unit.
用軸受ユニットの製造方法であって、回転輪のうちで回
転側軌道面部分を熱処理硬化させた後、取付フランジの
片側面に制動用回転体を結合固定し、次いで、上記回転
側軌道面を、この制動用回転体の被制動面を基準面とし
て利用する事により、所定の形状及び寸法に加工する、
制動用回転体付車輪用軸受ユニットの製造方法。2. The method for manufacturing a bearing unit for a wheel with a rotating body for braking according to claim 1, wherein the rotating-side raceway surface portion of the rotating wheel is heat-treated and then hardened to one side of a mounting flange. The rotating body for braking is fixedly coupled, and then the above-mentioned rotating side raceway surface is processed into a predetermined shape and dimensions by using the braked surface of the rotating body for braking as a reference plane.
A method of manufacturing a bearing unit for a wheel with a rotating body for braking.
状態で懸架装置に支持固定される静止輪と、回転側周面
にその表面を熱処理硬化された回転側軌道面を有する回
転輪と、この回転側軌道面と上記静止側軌道面との間に
設けられた複数個の転動体と、上記回転輪の外周面に設
けられた取付フランジと、この取付フランジの片側面に
結合固定された、制動時に摩擦材を押し付けられる被制
動面を有する制動用回転体とを備えた制動用回転体付車
輪用軸受ユニットに於いて、この制動用回転体の被制動
面は、上記静止輪のうちの上記懸架装置に対する取付面
を基準として所定の形状及び寸法に加工されたものであ
る事を特徴とする制動用回転体付車輪用軸受ユニット。3. A stationary raceway having a stationary raceway surface on a stationary side peripheral surface and supported and fixed to a suspension device in use, and a rotating raceway surface whose surface is heat-treated and hardened on a rotating side peripheral surface. A rotating wheel, a plurality of rolling elements provided between the rotating side raceway surface and the stationary side raceway surface, a mounting flange provided on an outer peripheral surface of the rotating ring, and one side of the mounting flange. And a brake rotating body having a braked body having a braked surface against which a friction material is pressed during braking, in a wheel bearing unit with a brake rotating body. A bearing unit for a wheel with a rotating body for braking, characterized in that the stationary wheel is processed into a predetermined shape and dimensions based on a mounting surface of the stationary wheel with respect to the suspension device.
用軸受ユニットの製造方法であって、回転輪のうちで回
転側軌道面部分を熱処理硬化させてからこの回転側軌道
面部分の仕上加工を施し、更に上記回転輪と静止輪とを
複数の転動体を介して組み合わせると共に、取付フラン
ジの側面に制動用回転体を結合固定し、次いで、この制
動用回転体の被制動面を、上記静止輪のうちの上記懸架
装置に対する取付面を基準面として利用する事により、
所定の形状及び寸法に加工する、制動用回転体付車輪用
軸受ユニットの製造方法。4. The method of manufacturing a wheel bearing unit with a rotating body for braking according to claim 3, wherein the rotating raceway surface portion of the rotating wheel is heat treated and hardened. Finishing is performed, and further, the rotating wheel and the stationary wheel are combined via a plurality of rolling elements, and a braking rotary body is fixedly connected to the side surface of the mounting flange, and then the braking surface of the braking rotary body is fixed. By using the mounting surface of the stationary wheel for the suspension device as a reference surface,
A method of manufacturing a bearing unit for a wheel with a rotating body for braking, which is processed into a predetermined shape and dimensions.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37239399A JP2001180209A (en) | 1999-12-28 | 1999-12-28 | Bearing unit for wheel with rotor for brake and manufacturing method therefor |
| DE60031180T DE60031180T2 (en) | 1999-02-17 | 2000-02-14 | Wheel bearing unit and method for its production |
| DE60042711T DE60042711D1 (en) | 1999-02-17 | 2000-02-14 | Wheel bearing unit and method for its production |
| EP06016921A EP1736326B1 (en) | 1999-02-17 | 2000-02-14 | Bearing unit for wheel and manufacturing method thereof |
| DE60016062T DE60016062T2 (en) | 1999-02-17 | 2000-02-14 | Rolling bearing unit for wheel and method of manufacture |
| EP00301105A EP1029709B1 (en) | 1999-02-17 | 2000-02-14 | Bearing unit for wheel and manufacturing method thereof |
| EP04075547A EP1424218B1 (en) | 1999-02-17 | 2000-02-14 | Bearing unit for wheel and manufacturing method thereof |
| US09/505,190 US6523909B1 (en) | 1999-02-17 | 2000-02-16 | Bearing unit for wheel and manufacturing method thereof |
| US10/335,891 US6880898B2 (en) | 1999-02-17 | 2003-01-03 | Bearing unit for wheel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37239399A JP2001180209A (en) | 1999-12-28 | 1999-12-28 | Bearing unit for wheel with rotor for brake and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001180209A true JP2001180209A (en) | 2001-07-03 |
Family
ID=18500372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37239399A Withdrawn JP2001180209A (en) | 1999-02-17 | 1999-12-28 | Bearing unit for wheel with rotor for brake and manufacturing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001180209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004067986A1 (en) * | 2003-01-27 | 2004-08-12 | Nsk Ltd. | Bearing unit for supporting wheel with disk and method of manufacturing the bearing unit |
| WO2007029700A1 (en) * | 2005-09-06 | 2007-03-15 | Nsk Ltd. | Rolling bearing unit for supporting wheel and method of producing the same |
-
1999
- 1999-12-28 JP JP37239399A patent/JP2001180209A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004067986A1 (en) * | 2003-01-27 | 2004-08-12 | Nsk Ltd. | Bearing unit for supporting wheel with disk and method of manufacturing the bearing unit |
| JPWO2004067986A1 (en) * | 2003-01-27 | 2006-05-18 | 日本精工株式会社 | Wheel support bearing unit with disk and manufacturing method thereof |
| WO2007029700A1 (en) * | 2005-09-06 | 2007-03-15 | Nsk Ltd. | Rolling bearing unit for supporting wheel and method of producing the same |
| JP2007098566A (en) * | 2005-09-06 | 2007-04-19 | Nsk Ltd | Rolling bearing unit for supporting wheel and method of producing the same |
| US8418367B2 (en) | 2005-09-06 | 2013-04-16 | Nsk Ltd. | Method of manufacturing a rolling bearing unit for supporting a wheel |
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