JP2002254293A - Method and device for superfinishing raceway surface of ball bearing - Google Patents

Method and device for superfinishing raceway surface of ball bearing

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Publication number
JP2002254293A
JP2002254293A JP2001056939A JP2001056939A JP2002254293A JP 2002254293 A JP2002254293 A JP 2002254293A JP 2001056939 A JP2001056939 A JP 2001056939A JP 2001056939 A JP2001056939 A JP 2001056939A JP 2002254293 A JP2002254293 A JP 2002254293A
Authority
JP
Japan
Prior art keywords
raceway surface
ball bearing
super
swing
groove
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.)
Pending
Application number
JP2001056939A
Other languages
Japanese (ja)
Inventor
Takeji Hamaide
武治 濱出
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.)
NSK Ltd
Original Assignee
NSK Ltd
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 NSK Ltd filed Critical NSK Ltd
Priority to JP2001056939A priority Critical patent/JP2002254293A/en
Publication of JP2002254293A publication Critical patent/JP2002254293A/en
Pending legal-status Critical Current

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  • Rolling Contact Bearings (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for superfinishing a raceway surface of a ball bearing which can prevent a shoulder drop or groove shape collapse caused by a ride rise or end tooth bearing of a grinding wheel and improve the accuracy of the arc shape of the raceway surface. SOLUTION: In the method for superfinishing the raceway surface 49 of the ball bearing wherein the grinding wheel 41 oscillating around the curvature central axis of the cross section having the rotation center axis of the raceway surface 49 is brought into pressure contact with the raceway surface 49 of the rotating outer/inner ring 47 of the ball bearing, the shoulder drop or the like generated at edge parts of the groove can be corrected by changeably executing the oscillation action of the grinding wheel 41.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、回転する玉軸受軌
道面に砥石を押圧接触させる玉軸受軌道面の超仕上げ方
法及び装置に関し、さらに詳しくは、軌道面のみぞ肩部
の過剰仕上げ（肩だれ）やみぞ形状崩れを防止する改良
技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for superfinishing a ball bearing raceway surface in which a grindstone is pressed into contact with a rotating ball bearing raceway surface. The present invention relates to an improved technique for preventing the shape of a groove from being collapsed.

【０００２】[0002]

【従来の技術】従来、玉軸受軌道面の超仕上げ装置は、
図１２にその要部の概略を示すように、モータ側Ｍの等
速回転運動を連接棒Ｌを介して超仕上げ加工側Ｓの揺動
運動に変換し、被加工物である玉軸受内輪又は玉軸受外
輪の軌道面を超仕上げしていた。図において、Ａ→Ｂ→
Ｃ→Ｄ→Ａは駆動源であるモータの回転方向を示し、そ
の結果、砥石の揺動はａ→ｂ→ｃ→ｄ→ａに揺動するこ
とになる。2. Description of the Related Art Conventionally, a super finishing device for a ball bearing raceway surface has
As schematically shown in FIG. 12, the constant-velocity rotational motion of the motor side M is converted into a swinging motion of the superfinishing side S via a connecting rod L, and the ball bearing inner ring or the workpiece is processed. The raceway surface of the ball bearing outer ring was super-finished. In the figure, A → B →
C → D → A indicates the rotation direction of the motor which is the drive source, and as a result, the swing of the grindstone swings in the order of a → b → c → d → a.

【０００３】図１３に示すように、砥石１は、軌道面３
の曲率中心軸５回りで揺動し、回転される内輪又は外輪
（図示の例は内輪）の回転方向と直角な方向で軌道面３
に摺動接触され、軌道面３を正弦波状に相対移動して超
仕上げを行う。[0003] As shown in FIG.
Of the raceway surface 3 in a direction perpendicular to the rotation direction of the inner ring or outer ring (in the illustrated example, the inner ring) which is swung around the center axis 5 of curvature of
To make a super-finish by relatively moving the raceway surface 3 in a sinusoidal manner.

【０００４】上記のようにして超仕上げされるみぞ７の
形状は、正確な円弧形状であることが要求される。この
ような要請から、揺動時、砥石１等にかかる遠心力の影
響を排除する特許２６１５６２４号開示の「超仕上げ
盤」や、揺動運動が逆転する位相で、モータの回転速度
を低下させる特許２８５５７９５号開示の「超仕上げ振
動装置の駆動方法及び駆動装置」等の発明がなされてい
る。[0004] The shape of the groove 7 to be super-finished as described above is required to be an accurate arc shape. From such a request, the "super finishing machine" disclosed in Japanese Patent No. 2615624, which eliminates the influence of the centrifugal force applied to the grindstone 1 and the like at the time of swinging, or the rotational speed of the motor is reduced at the phase where the swinging motion reverses Inventions such as “Driving method and driving device of super-finish vibrating device” disclosed in Japanese Patent No. 2855795 have been made.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、上記し
た従来の技術では、例えばモータの回転速度を制御する
ことにより、砥石の揺動範囲における速度は可変になる
ものの、砥石の揺動範囲（揺動振幅）自体を可変にはで
きなかった。このため、みぞ開口縁側の両端（所謂、み
ぞ肩部）９（図１３参照）への砥石接触時間がみぞ開口
中央部と比較して長くなり、また、砥石１には所定の幅
ｗがあることから、みぞのみぞ肩部９を多く仕上げるこ
とになってしまい、所謂肩だれや、みぞ形状崩れの生じ
る問題があった。即ち、図１４に示すように、内輪１１
の超仕上げ時には、Ａ−Ａ断面において、砥石１が内輪
１１に接する円周方向の距離（マタギ幅）が大きいほ
ど、みぞ面が砥石先端の揺動仮想線より内側に入り、断
面Ｂ−Ｂにおいては、砥石１が浮き上がることになる。
このため、マタギ幅がゼロの時以外は、程度の差こそあ
れ砥石１がみぞ肩部９に乗り上げてしまう。よって、揺
動振幅が一定である従来技術による内輪１１の超仕上げ
においては肩だれを回避することができなかった。However, in the above-mentioned prior art, although the speed in the swing range of the grinding wheel can be changed by controlling the rotation speed of the motor, for example, the swing range of the grinding wheel (oscillation range) is controlled. Amplitude) itself could not be made variable. For this reason, the contact time of the grindstone with both ends (so-called groove shoulders) 9 (see FIG. 13) on the groove opening edge side is longer than that of the center of the groove opening, and the grindstone 1 has a predetermined width w. For this reason, the groove shoulder portion 9 is to be finished in a large number, and there is a problem that a so-called shoulder droop or a groove shape collapse occurs. That is, as shown in FIG.
At the time of super-finishing, in the AA cross section, as the circumferential distance (mat width) of the grinding wheel 1 in contact with the inner ring 11 increases, the groove surface enters the inside of the imaginary swing line of the tip of the grinding wheel, and the cross section BB In, the grindstone 1 rises.
For this reason, the grindstone 1 rides on the groove shoulder 9 to a greater or lesser degree except when the mating width is zero. Therefore, in the superfinishing of the inner ring 11 according to the prior art in which the swing amplitude is constant, the shoulder drop cannot be avoided.

【０００６】また、図１５に示すように、外輪１３の超
仕上げ時には、Ａ−Ａ断面においては砥石１がみぞ肩部
９よりみぞ中心部寄りで接触し、Ｂ−Ｂ断面においては
砥石１が浮き上がることになる。このため、マタギ幅が
ゼロの時以外は、程度の差こそあれ砥石１がみぞに片当
たりしてしまう。よって、揺動振幅が一定である従来技
術による外輪１３の超仕上げにおいては、みぞ形状崩れ
を回避することができなかった。As shown in FIG. 15, when the outer race 13 is super-finished, the grindstone 1 comes into contact with the groove center near the groove shoulder 9 in the AA section, and the grindstone 1 contacts the groove in the BB section. It will rise. For this reason, except when the mating width is zero, the grindstone 1 hits the groove with a certain degree of difference. Therefore, in the superfinishing of the outer race 13 according to the prior art in which the swing amplitude is constant, the groove shape collapse cannot be avoided.

【０００７】本発明は上記状況に鑑みてなされたもの
で、砥石の乗り上げや片当たりにより生じる肩だれやみ
ぞ形状崩れが防止できる玉軸受軌道面の超仕上げ方法及
び装置を提供し、もって、軌道面円弧形状の精度向上を
図ることを目的とする。The present invention has been made in view of the above circumstances, and provides a super-finishing method and apparatus for a ball bearing raceway surface which can prevent shoulder deformation and groove shape collapse caused by running of a whetstone or one-side contact. An object of the present invention is to improve the accuracy of a surface arc shape.

【０００８】[0008]

【課題を解決するための手段】上記目的を達成するため
の本発明に係る請求項１記載の玉軸受軌道面の超仕上げ
方法は、回転する玉軸受内輪又は玉軸受外輪の軌道面
に、該軌道面の回転中心軸を含む断面の曲率中心軸回り
で揺動する砥石を押圧接触させ、前記軌道面を超仕上げ
する玉軸受軌道面の超仕上げ方法において、前記砥石の
揺動動作を、その揺動振幅を変化させて行うことを特徴
とする。According to a first aspect of the present invention, there is provided a method for superfinishing a raceway of a ball bearing according to the present invention, comprising the steps of: In a super-finishing method for a ball bearing raceway surface, in which a grinding wheel that oscillates around a center axis of curvature of a cross section including a rotation center axis of a raceway surface is super-finished, the oscillating operation of the grinding stone is performed. It is characterized by changing the swing amplitude.

【０００９】この玉軸受軌道面の超仕上げ方法では、加
工中に砥石の揺動振幅、即ち、揺動範囲を小さくして、
みぞの中心近傍が過剰に加工されることを防止できる。
例えば、揺動振幅を、みぞ肩部を加工可能な最大揺動振
幅から、みぞの中心近傍のみを加工する最小揺動振幅ま
でを徐々に（又は段階的に）小さくし、又は、徐々に大
きくすることにより、揺動振幅が徐々に小さく又は大き
く変化して、みぞの中心近傍からみぞ肩部までの範囲を
均等に加工することができる。これにより、砥石に幅が
あることからみぞの肩部を多く仕上げてしまうことによ
り生じていたみぞ肩部の過剰仕上げ（肩だれ）等が補正
でき、正確な円弧形状の軌道面が形成可能になる。[0009] In this super-finishing method of the ball bearing raceway surface, the swing amplitude of the grindstone, that is, the swing range during machining is reduced,
Excessive processing near the center of the groove can be prevented.
For example, the swing amplitude is gradually (or stepwise) reduced from the maximum swing amplitude at which the groove shoulder can be machined to the minimum swing amplitude at which only the vicinity of the groove center is machined, or gradually increased. By doing so, the swing amplitude changes gradually or greatly, and the range from the vicinity of the center of the groove to the shoulder of the groove can be uniformly processed. As a result, it is possible to correct excessive finishing (shoulder drooping) of the groove shoulder caused by finishing many shoulders of the groove due to the width of the whetstone, and it is possible to form an accurate arc-shaped raceway surface Become.

【００１０】また、玉軸受軌道面の超仕上げ方法は、左
右の揺動端から等距離にある揺動中心の位置を異なる位
置に移動させて前記軌道面を超仕上げすることを特徴と
してもよい。The method for superfinishing a ball bearing raceway surface may be characterized in that the position of the swing center, which is equidistant from the left and right swinging ends, is moved to a different position, thereby superfinishing the raceway surface. .

【００１１】この玉軸受軌道面の超仕上げ方法では、揺
動中心の位置が異なる位置に移動可能となるため、軌道
面の所望の部分に揺動中心を移動させた局所的な仕上げ
が行える。従って、例えば揺動中心がみぞの中心近傍に
位置するときの加工時間（揺動回数）を長く（多く）
し、揺動中心がみぞの肩部に接近させるに伴って、加工
時間（揺動回数）を短く（少なく）することで、肩部を
多く仕上げてしまう肩だれ等が補正でき、正確な円弧形
状の軌道面が形成可能になる。In this method for super-finishing the ball bearing raceway surface, the position of the swing center can be moved to a different position, so that local finishing can be performed by moving the swing center to a desired portion of the raceway surface. Therefore, for example, the processing time (the number of swings) when the swing center is located near the center of the groove is long (many).
As the swing center moves closer to the shoulder of the groove, the processing time (number of swings) is shortened (reduced), so that shoulder shoulders, etc., which finish the shoulder more, can be corrected. A track surface having a shape can be formed.

【００１２】さらに、玉軸受軌道面の超仕上げ方法は、
前記軌道面のみぞ肩部を、予めみぞ半径の円弧より半径
方向内側に形成し、この軌道面に対して超仕上げするこ
とを特徴としてもよい。Further, a method for super-finishing the raceway surface of a ball bearing is as follows.
The raceway surface may have a groove shoulder formed in advance in a radially inner side of an arc having a groove radius, and the raceway surface may be superfinished.

【００１３】この玉軸受軌道面の超仕上げ方法では、超
仕上げ前の内輪軌道面のみぞ肩部が、みぞ半径の円弧よ
り半径方向内側に形成される。この対策として、軌道面
のみぞ肩部が超仕上げによって多く削られてしまうこと
を見越して、削りしろが余分に残された状態に予め軌道
面を形成しておいてもよい。これにより、この軌道面に
通常の超仕上げがなされたときに、肩だれによりみぞ肩
部が多く削られ、目的の正確な円弧形状の軌道面が形成
されることになる。In this method for superfinishing the ball bearing raceway surface, the groove shoulder of the inner raceway surface before superfinishing is formed radially inward of the arc of the groove radius. As a countermeasure, the raceway surface may be formed in advance in a state where an extra cutting margin is left in anticipation that the shoulder portion of the raceway surface will be largely cut by superfinishing. As a result, when this raceway surface is subjected to normal superfinishing, a large number of groove shoulders are cut off by shoulder drooping, and a desired accurate arc-shaped raceway surface is formed.

【００１４】請求項２記載の玉軸受軌道面の超仕上げ装
置は、回転する玉軸受内輪又は玉軸受外輪の軌道面に、
該軌道面の回転中心軸を含む断面の曲率中心軸回りで揺
動する砥石を押圧接触させ、前記軌道面を超仕上げする
玉軸受軌道面の超仕上げ装置において、前記砥石の揺動
振幅を変化させる制御装置を備えたことを特徴とする。According to a second aspect of the present invention, there is provided a ball bearing raceway surface super-finishing device, comprising: a rotating ball bearing inner ring or a ball bearing outer ring;
In the ball bearing raceway surface super-finishing device for pressing and contacting a grinding stone that oscillates about a center axis of curvature of a cross section including a rotation center axis of the raceway surface, the swinging amplitude of the grinding stone is changed. A control device for causing the control device to perform the control.

【００１５】この玉軸受軌道面の超仕上げ装置では、制
御装置により、加工中に砥石の揺動振幅を小さく設定す
ることで、みぞの中心近傍が過剰に加工されることを防
止できる。これにより、砥石に幅があることからみぞの
肩部を多く仕上げてしまうことにより生じていたみぞ肩
部の過剰仕上げ（肩だれ）等が補正でき、正確な円弧形
状の軌道面が形成可能になる。In the ball bearing raceway surface super-finishing apparatus, the control device sets the swinging amplitude of the grindstone to be small during processing, thereby preventing excessive machining near the center of the groove. As a result, it is possible to correct excessive finishing (shoulder drooping) of the groove shoulder caused by finishing many shoulders of the groove due to the width of the whetstone, and it is possible to form an accurate arc-shaped raceway surface Become.

【００１６】請求項３記載の玉軸受軌道面の超仕上げ装
置は、前記砥石のマタギ幅方向両端部の幅が、マタギ幅
方向中央部の幅より狭く形成されていることを特徴とす
る。According to a third aspect of the present invention, there is provided a ball bearing raceway surface super-finishing apparatus, wherein the width of both ends of the grinding wheel in the width direction is smaller than the width of a central portion in the width direction.

【００１７】この玉軸受軌道面の超仕上げ装置では、砥
石のマタギ方向両端部の幅が、マタギ方向中央部の幅よ
り狭く形成され、砥石のマタギ方向両端部と軌道面との
干渉が少なくなる。軌道面の超仕上げでは、砥石が軌道
面に接触する内輪又は外輪の円周方向の距離（マタギ
幅）が大きいと、軌道面の円周方向における真円度は向
上するが、軌道面との干渉が大きくなり、かえってみぞ
形状を悪化させる。これに対し、砥石のマタギ方向両端
部の幅が曲率中心軸方向中央部の幅より狭く形成されて
いれば、マタギ幅を小さくせずに、軌道面との干渉が抑
止され、みぞ形状を悪化させずに真円度を向上させるこ
とが可能になる。In this ball bearing raceway surface super-finishing apparatus, the width of the grinding stone at both ends in the direction of mating is formed narrower than the width of the center part in the direction of mating, and the interference between both ends of the grinding stone in the direction of mating and the raceway is reduced. . In the super finishing of the raceway surface, if the circumferential distance (Matagi width) of the inner ring or the outer ring with which the grinding wheel contacts the raceway surface is large, the roundness of the raceway surface in the circumferential direction is improved, Interference increases, which worsens the groove shape. On the other hand, if the width of both ends of the grinding wheel in the mating direction is narrower than the width of the central part in the direction of the curvature center axis, interference with the raceway surface is suppressed without reducing the mating width, and the groove shape is deteriorated. The roundness can be improved without doing so.

【００１８】さらに、玉軸受軌道面の超仕上げ装置は、
前記砥石を揺動させる駆動源に、回転及び揺動が可能で
且つ揺動振幅が可変の駆動手段が設けられたことを特徴
とすることができる。Further, a super-finishing device for a raceway surface of a ball bearing includes:
The drive source for swinging the whetstone may be provided with a drive unit capable of rotating and swinging and having a variable swing amplitude.

【００１９】この玉軸受軌道面の超仕上げ装置では、砥
石を揺動させる駆動源に揺動振幅が可変の駆動手段が用
いられる。一方、従来の超仕上げ装置では、回転駆動さ
れるモータが用いられ、このモータの回転軸に偏芯して
連結された連接棒の先端が、揺動自在となった砥石に連
結されていた。従って、モータの回転速度が制御されれ
ば、砥石の揺動範囲での速度は可変になるものの、砥石
の揺動範囲は変化させることができなかった。これに対
し、本超仕上げ装置では、加工中に砥石の揺動振幅、即
ち、揺動範囲を可変にできるので、例えば揺動範囲を小
さくして、みぞの中心近傍が多く加工されることを意図
的に防止することが可能になり、これにより、みぞ肩部
を過剰に仕上げることにより発生していた肩だれを防止
できる。In this ball bearing raceway surface super-finishing apparatus, a drive means having a variable swing amplitude is used as a drive source for swinging the grindstone. On the other hand, in the conventional superfinishing apparatus, a motor driven to rotate is used, and a tip of a connecting rod eccentrically connected to a rotation shaft of the motor is connected to a swingable grindstone. Therefore, if the rotation speed of the motor is controlled, the speed in the swing range of the grindstone becomes variable, but the swing range of the grindstone cannot be changed. On the other hand, in the present super-finishing apparatus, the swinging amplitude of the grindstone during machining, that is, the swinging range can be made variable, so that, for example, the swinging range is reduced, and the vicinity of the center of the groove is machined more. It becomes possible to prevent intentionally, whereby it is possible to prevent shoulder drooping caused by excessively finishing the groove shoulder.

【００２０】[0020]

【発明の実施の形態】以下、本発明に係る玉軸受軌道面
の超仕上げ方法及びそれに用いる超仕上げ装置の好適な
実施の形態を図面を参照して詳細に説明する。図１は本
発明に係る第１の実施の形態の超仕上げ装置を示す構成
図、図２は図１のモータが回転される場合の砥石揺動範
囲の説明図、図３はモータが回転される場合の砥石揺動
振幅を示す図、図４は図１のモータが揺動される場合の
砥石揺動範囲の説明図、図５はモータが揺動される場合
の砥石揺動振幅を示す図、図６は揺動振幅を変化させた
状況（ａ）と揺動中心を変化させた状況（ｂ）とを示す
説明図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a super-finishing method for a ball bearing raceway surface and a super-finishing apparatus used in the present invention will be described below in detail with reference to the drawings. 1 is a configuration diagram showing a super-finishing apparatus according to a first embodiment of the present invention, FIG. 2 is an explanatory diagram of a grinding wheel swing range when the motor of FIG. 1 is rotated, and FIG. FIG. 4 is a diagram illustrating a grinding wheel swing amplitude when the motor of FIG. 1 is swung, and FIG. 5 is a diagram illustrating a grinding stone swing amplitude when the motor is swung. FIG. 6 and FIG. 6 are explanatory views showing a situation (a) in which the swing amplitude is changed and a situation (b) in which the swing center is changed.

【００２１】この実施の形態による超仕上げ装置２１
は、駆動部２３と、この駆動部２３を制御する制御部２
４と、駆動部２３により駆動される超仕上げ加工部２７
とを要部として構成される。Super finishing apparatus 21 according to this embodiment
Is a drive unit 23, and a control unit 2 that controls the drive unit 23.
4 and a super-finishing section 27 driven by the driving section 23
Are configured as main parts.

【００２２】駆動部２３は、駆動源となる駆動手段（例
えばサーボモータ）２９と、サーボモータ２９の回転軸
２９ａに同軸状に結合、又はサーボモータ２９に内蔵さ
れ、回転軸２９ａの回転角度を検出する回転角度検出器
３１と、回転軸２９ａの端面と後述の中心軸支持外筒３
３の端面にそれぞれ固着された連接棒２５とから構成さ
れる。サーボモータ２９は、通常の連続回転動作に加
え、１回転中で任意のステップポジションが得られるよ
うになっており、また、得られたポジションを揺動中心
にして、任意の揺動角度（揺動振幅）で揺動自在に制御
される。即ち、サーボモータ２９は、回転及び揺動動作
が可能で且つ揺動振幅を可変にできる。The drive unit 23 is connected to a drive means (for example, a servo motor) 29 serving as a drive source coaxially with a rotation shaft 29a of the servo motor 29, or is built in the servo motor 29, and controls the rotation angle of the rotation shaft 29a. A rotation angle detector 31 to be detected, an end face of the rotation shaft 29a, and a central shaft
3 are connected to connecting rods 25 fixed to the end faces. The servo motor 29 can obtain an arbitrary step position during one rotation in addition to the normal continuous rotation operation, and can set an arbitrary swing angle (oscillation) with the obtained position as a swing center. (Amplitude). That is, the servo motor 29 is capable of rotating and oscillating, and the oscillating amplitude is variable.

【００２３】制御部２４は、回転角度検出器３１に接続
され、回転軸２９ａの揺動振幅及び揺動中心を制御する
回転制御装置３５と、サーボモータ２９の駆動電源３７
とから構成されている。さらに、超仕上げ加工部２７
は、砥石加工部３９と超仕上げ砥石４１とからなるヘッ
ド４３と、コの字状に形成されヘッド４３を支持する中
心軸４５と、この中心軸４５を支持・固定する中心軸支
持外筒３３とから構成されている。なお、図１中、４７
は被加工物である転がり軸受の外輪で、４９は図示しな
い転動体が転がり接触する軌道面である。この軌道面の
回転中心軸を含む断面の曲率中心軸回りで砥石４１が押
圧されつつ揺動することになる。The control unit 24 is connected to the rotation angle detector 31 and controls the rotation amplitude and the rotation center of the rotation shaft 29a.
It is composed of Further, the super-finishing section 27
Is a head 43 composed of a grindstone processing portion 39 and a super-finishing grindstone 41, a central shaft 45 formed in a U-shape to support the head 43, and a central shaft supporting outer cylinder 33 supporting and fixing the central shaft 45. It is composed of Incidentally, in FIG.
Reference numeral 49 denotes an outer ring of a rolling bearing as a workpiece, and reference numeral 49 denotes a raceway surface with which a rolling element (not shown) comes into rolling contact. The grindstone 41 swings while being pressed around the center axis of curvature of the cross section including the rotation center axis of the raceway surface.

【００２４】次に、この超仕上げ装置２１の動作につい
て説明する。超仕上げ装置２１は、図２（１）〜（４）
に示すように、回転軸２９ａがＡ→Ｂ→Ｃ→Ｄ→Ａのよ
うに連続的に回転すると、その回転運動が連接棒２５を
介して外筒３３に伝達され、外筒３３がＯ1を中心とし
たａ→ｂ→ａ→ｃ→ａの部分回転運動をする。外筒３３
の部分回転運動は、中心軸４５を介してヘッド４３に伝
達され、ヘッド４３はＯ1を中心とした往復運動を採
る。これにより、砥石加工部３９によって、砥石４１が
図３に示す揺動振幅で揺動しながら加圧して軌道面４９
を超仕上げする。なお、中心位置Ｏ1は軌道面４９の曲
率中心と一致している。Next, the operation of the superfinishing device 21 will be described. The super-finishing device 21 is shown in FIGS.
As shown in (1), when the rotation shaft 29a continuously rotates in the order of A → B → C → D → A, the rotational motion is transmitted to the outer cylinder 33 via the connecting rod 25, and the outer cylinder 33 is O 1. Make a partial rotation of a → b → a → c → a around. Outer cylinder 33
Portion rotational movement of is transmitted to the head 43 via the central shaft 45, the head 43 takes the reciprocating motion about the O 1. Thereby, the grinding wheel 41 presses the whetstone 41 while swinging at the swing amplitude shown in FIG.
To super finish. The center position O 1 coincides with the center of curvature of the raceway surface 49.

【００２５】本実施の形態では、被加工物を玉軸受の外
輪４７とし、この外輪４７を回転させながらヘッド４３
の超仕上げ砥石４１を揺動することにより、外輪４７の
内周に軌道面４９を連続的に形成する。また、図示は省
略するが、同様の構成を用いて玉軸受の内輪を回転させ
ながら、ヘッド４３の超仕上げ砥石４１を揺動すると、
内輪の外周に軌道面が連続的に形成される。In this embodiment, the workpiece is an outer ring 47 of a ball bearing, and the head 43 is rotated while rotating the outer ring 47.
The orbit surface 49 is continuously formed on the inner periphery of the outer ring 47 by swinging the super-finishing grindstone 41. Although not shown, when the super-finishing grindstone 41 of the head 43 is swung while rotating the inner ring of the ball bearing using the same configuration,
A raceway surface is continuously formed on the outer periphery of the inner ring.

【００２６】一方、制御部２４によって、サーボモータ
２９の駆動動作を回転駆動から揺動駆動へ切り替える
と、図４（１）〜（４）に示すように、回転軸２９ａが
Ａ→Ｅ→Ａ→Ｆ→Ａのように揺動する。すると、その揺
動運動が連接棒２５を介して外筒３３に伝達され、外筒
３３はＯ1を中心としたａ→ｅ→ａ→ｆ→ａの上記の場
合より小さい範囲で部分回転運動をする。外筒３３の部
分回転運動は中心軸４５を介してヘッド４３に伝達さ
れ、ヘッド４３はＯ1を中心とした往復運動を行う。こ
れにより、砥石加工部３９によって砥石４１が図５に示
す上記より小さい揺動振幅で揺動しながら軌道面４９を
超仕上げすることになる。On the other hand, when the control unit 24 switches the driving operation of the servo motor 29 from rotary driving to swing driving, as shown in FIGS. 4 (1) to 4 (4), the rotating shaft 29a moves from A → E → A. Swings like → F → A. Then, the oscillating motion is transmitted to the outer cylinder 33 via the connecting rod 25, and the outer cylinder 33 partially rotates in the range of a → e → a → f → a around O 1 which is smaller than the above case. do. Part rotary movement of the outer cylinder 33 is transmitted to the head 43 via the central shaft 45, the head 43 performs a reciprocating motion about a O 1. Thereby, the grindstone 41 is super-finished while the grindstone 41 swings with the smaller swing amplitude shown in FIG.

【００２７】このように、超仕上げ装置２１を用いた超
仕上げ方法では、制御部２４によって、砥石４１を異な
る揺動振幅に変化させて軌道面４９に摺動接触させるこ
とが可能になる。従って、加工中に砥石４１の揺動振
幅、即ち、揺動範囲を適宜小さくして、みぞの中心近傍
を多く加工することが可能になる。As described above, in the super-finishing method using the super-finishing device 21, the control unit 24 allows the grindstone 41 to be changed into different swing amplitudes and brought into sliding contact with the raceway surface 49. Therefore, the swing amplitude of the grindstone 41, that is, the swing range during machining is appropriately reduced, and it is possible to machine more near the center of the groove.

【００２８】この場合の揺動振幅は、例えば図６（ａ）
に示すように、みぞ肩部を加工可能な最大揺動振幅αma
x から、みぞの中心近傍のみを加工する最小揺動振幅α
minまで揺動振幅α1，α2，…を徐々に（又は段階的
に）小さくするものであってもよく、また、徐々に大き
くするものであってもよい。つまり、揺動振幅を変化さ
せることによってみぞの中心近傍が多く加工され、みぞ
肩部が少なく加工されることになる。この場合、それぞ
れの揺動振幅における加工量は、加工時間又は揺動回数
によって制御できる。これにより、砥石４１に幅ｗがあ
ることからみぞの肩部を多く仕上げてしまうことにより
生じていたみぞ肩部の過剰仕上げ（肩だれ）やみぞ形状
崩れが補正でき、正確な円弧形状の軌道面が形成可能に
なる。The swing amplitude in this case is, for example, as shown in FIG.
As shown in the figure, the maximum swing amplitude αma
From x, the minimum swing amplitude α that processes only near the center of the groove
The swing amplitudes α1, α2,... may be gradually (or stepwise) reduced to min, or may be gradually increased. That is, by changing the swing amplitude, the vicinity of the center of the groove is machined more, and the shoulder of the groove is machined less. In this case, the machining amount at each swing amplitude can be controlled by the machining time or the number of swings. As a result, excessive finishing (grooving) of the groove shoulder and collapse of the groove shape caused by finishing the shoulder of the groove many times due to the width w of the grindstone 41 can be corrected, and the accurate arc-shaped orbit can be corrected. A surface can be formed.

【００２９】また、超仕上げ装置２１は、サーボモータ
２９が制御部２４によって駆動制御されることにより、
左右の揺動端から等距離にある図６（ｂ）の揺動中心Ｙ
の位置を異なる位置（例えばＹ１，Ｙ２）に移動させ
て、軌道面を超仕上げする加工方法が可能になる。この
玉軸受軌道面の超仕上げ方法では、揺動中心Ｙの位置を
異なる位置Ｙ１、Ｙ２に移動することにより、軌道面の
所望の部分に揺動中心Ｙを移動させた局所的な仕上げが
可能になる。これによれば、例えば揺動中心Ｙがみぞの
中心近傍に位置するときの加工時間（揺動回数）を長く
（多く）し、揺動中心Ｙがみぞの肩部に接近するに伴っ
て加工時間（揺動回数）を短く（少なく）することで、
肩部を多く仕上げてしまう肩だれ等が補正でき、正確な
円弧形状の軌道面を形成できる。なお、この場合の揺動
振幅Ｋは、揺動中心Ｙがみぞ肩部へ移動されるに伴っ
て、徐々に小さく制御されるものであることが好まし
い。The super-finishing device 21 is driven by the servo motor 29 under the control of the control unit 24.
The swing center Y in FIG. 6B equidistant from the left and right swing ends.
Is moved to a different position (for example, Y1, Y2), and a processing method for super-finishing the raceway surface becomes possible. In the ball bearing raceway surface super finishing method, by moving the position of the swing center Y to different positions Y1 and Y2, it is possible to perform local finishing by moving the swing center Y to a desired portion of the raceway surface. become. According to this, for example, when the swing center Y is located near the center of the groove, the processing time (number of swings) is lengthened (increased), and the processing is performed as the swing center Y approaches the shoulder of the groove. By shortening (reducing) the time (number of swings),
It is possible to correct shoulder drooping or the like that finishes many shoulders, and to form an accurate arc-shaped orbit surface. In this case, the swing amplitude K is preferably controlled to be gradually reduced as the swing center Y is moved to the groove shoulder.

【００３０】なお、上記した揺動振幅の可変動作、或い
は揺動中心の移動は、通常の揺動振幅（サーボモータ２
９を回転駆動させた時の揺動振幅）による加工前、加工
途中、加工後のいずれに実施されてもよい。また、超仕
上げ装置２１は連接棒２５によるリンク機構を有するの
で、回転駆動と揺動駆動の切り替えが可能になる。この
ため、サーボモータ２９を回転駆動させれば、砥石４１
の揺動回数が増加して加工能率を向上させることがで
き、また、サーボモータ２９を揺動駆動させれば、上記
のように肩だれ等の補正を可能にすることができる。Note that the above-described variable operation of the swing amplitude or the movement of the swing center is performed by the normal swing amplitude (servo motor 2).
9 may be carried out before, during, or after the machining by the swing amplitude when the rotary shaft 9 is rotated. Further, since the superfinishing device 21 has a link mechanism using the connecting rod 25, it is possible to switch between rotational drive and swing drive. Therefore, if the servo motor 29 is driven to rotate, the grinding wheel 41 is rotated.
The number of swings can be increased to improve the machining efficiency, and if the servo motor 29 is driven to swing, it is possible to correct shoulder drop as described above.

【００３１】次に、第２の実施の形態に係る超仕上げ装
置を説明する。図７は第２の実施の形態に係る超仕上げ
装置の正面図、図８は図７の側面図である。この実施の
形態による超仕上げ装置５１において、被加工物である
玉軸受内輪５３は、不図示の回転機構により回転自在に
支持されると共に回転軸５５の周りで所定の周速で回転
される。内輪５３は、その外周に環状の軌道面５７を有
している。内輪５３の軌道面５７には、所定の曲率の曲
面５９ａを内輪５３に当接させる砥石５９が押圧されて
いる。砥石５９は、油圧シリンダ６３のピストンロッド
６３ｂに固定されたアーム６１により押圧されている。
また、油圧シリンダ６３には油圧供給管６３ａが接続さ
れ、外部から駆動用の油が供給される。Next, a superfinishing apparatus according to a second embodiment will be described. FIG. 7 is a front view of the superfinishing apparatus according to the second embodiment, and FIG. 8 is a side view of FIG. In the superfinishing device 51 according to this embodiment, the ball bearing inner ring 53 as a workpiece is rotatably supported by a rotating mechanism (not shown) and is rotated around a rotating shaft 55 at a predetermined peripheral speed. The inner race 53 has an annular raceway surface 57 on its outer periphery. A grindstone 59 that presses a curved surface 59 a having a predetermined curvature to the inner ring 53 is pressed against the raceway surface 57 of the inner ring 53. The grindstone 59 is pressed by an arm 61 fixed to a piston rod 63b of a hydraulic cylinder 63.
A hydraulic supply pipe 63a is connected to the hydraulic cylinder 63, and driving oil is supplied from outside.

【００３２】この油圧シリンダ６３は保持部材６５によ
り固定保持され、砥石５９は保持部材６５に滑り案内さ
れつつ保持されている。また、保持部材６５は揺動軸部
材６７に固定されている。従って、砥石５９及び油圧シ
リンダ６３は保持部材６５と揺動方向に一体的に動作す
る。この揺動軸部材６７にはサーボモータ６９の回転軸
６９ａが連結されており、上記のサーボモータ２９と同
様に１回転中で任意のステップポジションが得られるよ
うになっている。また、得られたステップポジションを
揺動中心として、任意の揺動角度（揺動振幅）で揺動自
在となっている。そして、サーボモータ６９には図示し
ない制御部が接続され、上記の制御部２４と同様に、サ
ーボモータ６９の揺動振幅、揺動中心の移動動作が制御
される。The hydraulic cylinder 63 is fixedly held by a holding member 65, and the grindstone 59 is held while being slidably guided by the holding member 65. The holding member 65 is fixed to the swing shaft member 67. Therefore, the grindstone 59 and the hydraulic cylinder 63 operate integrally with the holding member 65 in the swing direction. A rotary shaft 69a of a servo motor 69 is connected to the swing shaft member 67, so that an arbitrary step position can be obtained during one rotation similarly to the servo motor 29 described above. Further, it is possible to swing at an arbitrary swing angle (oscillation amplitude) with the obtained step position as a swing center. A control unit (not shown) is connected to the servo motor 69, and the swing amplitude and the movement of the swing center of the servo motor 69 are controlled in the same manner as the control unit 24 described above.

【００３３】次に、この超仕上げ装置５１の動作を説明
する。油圧シリンダ６３の油圧によって、ピストンロッ
ド６３ｂが縮退すると、ピストンロッド６３ｂに接続さ
れたアーム６１が従動し、アーム６１の先端に取り付け
られた砥石５９が内輪５３の軌道面５７に押圧される。
この状態で、内輪５３を回転すると共に、サーボモータ
６９によって揺動軸部材６７を揺動すると、それに応じ
て砥石５９も図８に示す揺動中心軸７１の周りで例えば
揺動角αで揺動し、軌道面５７の超仕上が行われる。こ
の揺動中心軸７１は、軌道面５７の曲率の中心と略一致
している。Next, the operation of the superfinishing device 51 will be described. When the piston rod 63 b is retracted by the hydraulic pressure of the hydraulic cylinder 63, the arm 61 connected to the piston rod 63 b is driven, and the grindstone 59 attached to the tip of the arm 61 is pressed against the raceway surface 57 of the inner ring 53.
In this state, when the inner ring 53 is rotated and the rocking shaft member 67 is rocked by the servomotor 69, the grindstone 59 is rocked accordingly at a rocking angle α around the rocking central axis 71 shown in FIG. Then, super finishing of the raceway surface 57 is performed. The swing center axis 71 substantially coincides with the center of curvature of the raceway surface 57.

【００３４】この超仕上げ装置５１においても、サーボ
モータ６９が制御部によって駆動制御されることによ
り、前述の超仕上げ装置２１の場合と同様に、砥石５９
を異なる揺動振幅に変化させて軌道面５７に接触させる
ことが可能になる。従って、加工中に砥石５９の揺動振
幅を小さくして、みぞの中心近傍を多く加工することが
可能になる。また、上記同様に、揺動中心の位置を異な
る位置に移動させて、軌道面を超仕上げする加工方法が
行え、肩部を多く仕上げてしまう肩だれ等が補正でき、
軌道面を正確な円弧形状に形成できる。In this super-finishing apparatus 51, the servo motor 69 is driven and controlled by the control unit, so that the grindstone 59 is formed in the same manner as in the super-finishing apparatus 21 described above.
Can be changed to a different swing amplitude to make contact with the raceway surface 57. Therefore, it is possible to reduce the swinging amplitude of the grindstone 59 during processing, and to process more near the center of the groove. Further, similarly to the above, by moving the position of the swing center to a different position, it is possible to perform a processing method of super-finishing the raceway surface, and to correct shoulder drooping, etc., which finishes many shoulders,
The raceway surface can be formed in an accurate arc shape.

【００３５】なお、上記第１、第２の実施の形態による
超仕上げ装置２１，５１は、サーボモータ２９，６９を
使用することにより、短時間の起動停止に対応すること
ができるようになる。これにより、例えば加工状態を確
認しながらの断続的な超仕上げが可能になる。The super-finishing apparatuses 21 and 51 according to the first and second embodiments can respond to a short-time start-stop by using the servo motors 29 and 69. Thus, for example, intermittent super finishing can be performed while checking the processing state.

【００３６】次に、第３の実施の形態に係る超仕上げ方
法を説明する。図９は第３の実施の形態に係る超仕上げ
方法を説明するみぞ部拡大断面図である。この実施の形
態による玉軸受軌道面の超仕上げ方法は、内輪７２軌道
面のみぞ肩部７３ａを、予めみぞ半径の円弧より半径方
向内側に形成する。そして、この軌道面７３に対して通
常の超仕上げがなされる。このような形状の軌道面７３
は、例えばその形状にドレッサーにて研削砥石を整形す
れば容易に得られる。Next, the superfinishing method according to the third embodiment will be described. FIG. 9 is an enlarged sectional view of a groove explaining a super-finishing method according to the third embodiment. In the super-finishing method of the raceway surface of the ball bearing according to this embodiment, the groove shoulder 73a of the raceway surface of the inner ring 72 is formed in advance radially inward of the arc of the groove radius. Then, normal super finishing is performed on the raceway surface 73. Track surface 73 having such a shape
Can be easily obtained by, for example, shaping a grinding wheel with the shape of a dresser.

【００３７】この玉軸受軌道面の超仕上げ方法では、内
輪７２のみぞ肩部７３ａが超仕上げによって多く削られ
てしまうことを見越して、削り代がその分だけ余分に残
された状態となっている。従って、通常の超仕上げがな
されれば、肩だれによりみぞ肩部７３ａが多く削られ、
目的とする正確な円弧形状の軌道面を得ることができ
る。In this method for super-finishing the ball bearing raceway surface, in anticipation that the shoulder 73a of the inner ring 72 will be largely shaved by the super-finishing, a surplus allowance will be left by that much. I have. Therefore, if the normal super finishing is performed, a lot of the groove shoulders 73a are cut by the shoulder drooping,
It is possible to obtain a desired accurate arc-shaped orbital surface.

【００３８】次に、第４の実施の形態に係る超仕上げ装
置を説明する。図１０は第４の実施の形態に係る超仕上
げ装置を説明する砥石摺動接触部の拡大図、図１１は第
４の実施の形態に係る超仕上げ装置に用いられる砥石の
断面形状例を示した説明図である。図１０に示すよう
に、例えば内輪８１のみぞ８３を超仕上げする場合、砥
石８５によるマタギ幅が大きくなると、砥石８５と内輪
８１とが干渉し、みぞ形状を悪化させる。その一方で、
マタギ幅が大きいことは外周全体に形成されるみぞ８３
の真円度の向上に大きく貢献している。そこで、本実施
の形態による超仕上げ装置は、従来の断面矩形状の砥石
８５と異なり、図１１に示すように、砥石のマタギ幅方
向８７両端部８９，８９の幅がマタギ幅方向８７中央部
９１の幅より狭い砥石９３ａ〜９３ｆを備えている。Next, a superfinishing apparatus according to a fourth embodiment will be described. FIG. 10 is an enlarged view of a grinding wheel sliding contact portion for explaining a superfinishing device according to a fourth embodiment, and FIG. 11 shows an example of a cross-sectional shape of a grinding wheel used in the superfinishing device according to the fourth embodiment. FIG. As shown in FIG. 10, for example, when the groove 83 of the inner ring 81 is super-finished, if the width of the groove formed by the grindstone 85 increases, the grindstone 85 and the inner ring 81 interfere with each other, thereby deteriorating the groove shape. On the other hand,
The large matagi width means that grooves 83 are formed all over the outer circumference.
Has greatly contributed to the improvement of roundness. Therefore, the superfinishing apparatus according to the present embodiment is different from the conventional grindstone 85 having a rectangular cross section, as shown in FIG. The grindstones 93a to 93f are smaller than the width of the grindstone 91.

【００３９】具体的には、砥石８５の断面形状は、図１
１（ａ）に示す四辺が直線からなる正方形、図１１
（ｂ）に示す菱形、図１１（ｃ）に示す楕円形状、図１
１（ｄ）に示す二辺が凸曲線からなる舟形、図１１
（ｅ）に示す四辺が凹曲線からなるアステロイド形状、
図１１（ｆ）に示す菱形のマタギ幅方向８７両端部をカ
ットした六角形状等とすることができる。なお、上記各
例以外にも本発明の主旨を満足するものであればいかな
る形状であってもよい。More specifically, the sectional shape of the grindstone 85 is shown in FIG.
FIG. 11 (a) is a square having four sides formed of straight lines.
The diamond shape shown in FIG. 11B, the elliptical shape shown in FIG.
11 (d) is a boat-shaped two-sided convex curve, FIG.
An asteroid shape in which the four sides shown in (e) are concave curves,
A hexagonal shape in which both ends of the diamond-shaped mating width direction 87 shown in FIG. In addition, any shape other than the above examples may be used as long as it satisfies the gist of the present invention.

【００４０】この玉軸受軌道面の超仕上げ装置では、砥
石９３ａ〜９３ｆのマタギ幅方向８９両端部と内輪８１
との干渉が少なくなる。これにより、マタギ幅を小さく
せずに軌道面との干渉が抑止され、みぞ形状を悪化させ
ずに真円度を向上できる。In the ball bearing raceway surface super-finishing apparatus, both ends of the grinding wheels 93a to 93f in the mating width direction 89 and the inner ring 81 are formed.
Interference with the camera is reduced. As a result, interference with the raceway surface is suppressed without reducing the width of the mating, and the roundness can be improved without deteriorating the groove shape.

【００４１】[0041]

【発明の効果】以上詳細に説明したように、本発明に係
る玉軸受軌道面の超仕上げ方法及び装置によれば、砥石
を異なる揺動振幅で変化させて軌道面に押圧接触させる
ので、加工中に砥石の揺動振幅、即ち、揺動範囲を小さ
くして、みぞの中心からみぞ肩部にわたって、均等に加
工することが可能になる。その結果、みぞ肩部に生じる
肩だれ等の発生を防止して、正確な円弧形状の軌道面を
形成することができる。As described in detail above, according to the ball bearing raceway surface super-finishing method and apparatus according to the present invention, the grinding wheel is changed at different swing amplitudes and is brought into pressure contact with the raceway surface. The swinging amplitude of the grindstone, that is, the swinging range is reduced during the grinding, so that the processing can be performed uniformly from the center of the groove to the shoulder of the groove. As a result, it is possible to prevent the occurrence of shoulder dripping or the like occurring at the groove shoulder, and to form an accurate arc-shaped track surface.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る第１の実施の形態の超仕上げ装置
を示す構成図である。FIG. 1 is a configuration diagram showing a super-finishing apparatus according to a first embodiment of the present invention.

【図２】図１のモータが回転される場合の砥石揺動範囲
の説明図である。FIG. 2 is an explanatory diagram of a whetstone swing range when the motor of FIG. 1 is rotated.

【図３】モータが回転される場合の砥石揺動振幅を示す
図である。FIG. 3 is a diagram showing a whetstone rocking amplitude when a motor is rotated.

【図４】図１のモータが揺動される場合の砥石揺動範囲
の説明図である。FIG. 4 is an explanatory diagram of a whetstone swing range when the motor of FIG. 1 is swung.

【図５】モータが揺動される場合の砥石揺動振幅を示す
図である。FIG. 5 is a diagram showing a whetstone rocking amplitude when a motor is rocked.

【図６】揺動振幅を変化させた状況（ａ）と揺動中心を
変化させた状況（ｂ）とを示す説明図である。FIG. 6 is an explanatory diagram showing a situation (a) in which the swing amplitude is changed and a situation (b) in which the swing center is changed.

【図７】第２の実施の形態に係る超仕上げ装置の正面図
である。FIG. 7 is a front view of a superfinishing device according to a second embodiment.

【図８】図６の側面図である。FIG. 8 is a side view of FIG. 6;

【図９】第３の実施の形態に係る超仕上げ方法を説明す
るみぞ部拡大断面図である。FIG. 9 is an enlarged sectional view of a groove explaining a superfinishing method according to a third embodiment.

【図１０】第４の実施の形態に係る超仕上げ装置を説明
する砥石摺動接触部の拡大図である。FIG. 10 is an enlarged view of a grindstone sliding contact portion for explaining a superfinishing device according to a fourth embodiment.

【図１１】第４の実施の形態に係る超仕上げ装置に用い
られる砥石の断面形状例を示した説明図である。FIG. 11 is an explanatory diagram showing an example of a cross-sectional shape of a grindstone used in a superfinishing apparatus according to a fourth embodiment.

【図１２】従来の超仕上げ装置における揺動機構部の説
明図である。FIG. 12 is an explanatory diagram of a swing mechanism in a conventional superfinishing apparatus.

【図１３】超仕上げ装置における砥石と軌道面の接触状
況を示した拡大斜視図である。FIG. 13 is an enlarged perspective view showing a contact state between a grindstone and a raceway surface in the superfinishing device.

【図１４】従来の超仕上げ装置における内輪の超仕上げ
状況を示す説明図である。FIG. 14 is an explanatory diagram showing a super finishing state of an inner ring in a conventional super finishing device.

【図１５】従来の超仕上げ装置における外輪の超仕上げ
状況を示す説明図である。FIG. 15 is an explanatory view showing a super finishing state of an outer ring in a conventional super finishing device.

【符号の説明】[Explanation of symbols]

４１，５９，９３ａ〜９３ｆ 砥石 ４７ 玉軸受外輪 ４９，５７，７３，８３ 軌道面 ５３，８１ 玉軸受内輪 Ｏ1，７１，８７ 曲率中心軸41, 59, 93a to 93f Grinding stone 47 Ball bearing outer ring 49, 57, 73, 83 Track surface 53, 81 Ball bearing inner ring O 1 , 71, 87 Curvature central axis

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 回転する玉軸受内輪又は玉軸受外輪の軌
道面に、該軌道面の回転中心軸を含む断面の曲率中心軸
回りで揺動する砥石を押圧接触させ、前記軌道面を超仕
上げする玉軸受軌道面の超仕上げ方法において、 前記砥石の揺動動作を、その揺動振幅を変化させて行う
ことを特徴とする玉軸受軌道面の超仕上げ方法。1. A grinding wheel which oscillates around a center axis of curvature of a cross section including a rotation center axis of the raceway surface is brought into press contact with a raceway surface of a rotating ball bearing inner ring or a ball bearing outer ring, and the raceway surface is super-finished. A super-finishing method for a ball bearing raceway surface, wherein the swing operation of the grinding stone is performed by changing the swing amplitude. 【請求項２】 回転する玉軸受内輪又は玉軸受外輪の軌
道面に、該軌道面の回転中心軸を含む断面の曲率中心軸
回りで揺動する砥石を押圧接触させ、前記軌道面を超仕
上げする玉軸受軌道面の超仕上げ装置において、 前記砥石の揺動振幅を変化させる制御装置を備えたこと
を特徴とする玉軸受軌道面の超仕上げ装置。2. A grinding wheel oscillating around a center axis of curvature of a cross section including a rotation center axis of the raceway surface is brought into press contact with the raceway surface of the rotating ball bearing inner ring or ball bearing outer ring, and the raceway surface is super-finished. A super-finishing device for a ball bearing raceway surface, comprising: a control device for changing a swing amplitude of the whetstone. 【請求項３】 前記砥石のマタギ幅方向両端部の幅が、
マタギ幅方向中央部の幅より狭く形成されていることを
特徴とする請求項２に記載の玉軸受軌道面の超仕上げ装
置。3. The width of both ends of the whetstone in the width direction of mating is
The ball bearing raceway surface super-finishing device according to claim 2, wherein the width is formed narrower than a width of a central portion in a width direction of the mating bearing.
JP2001056939A 2001-03-01 2001-03-01 Method and device for superfinishing raceway surface of ball bearing Pending JP2002254293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001056939A JP2002254293A (en) 2001-03-01 2001-03-01 Method and device for superfinishing raceway surface of ball bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001056939A JP2002254293A (en) 2001-03-01 2001-03-01 Method and device for superfinishing raceway surface of ball bearing

Publications (1)

Publication Number Publication Date
JP2002254293A true JP2002254293A (en) 2002-09-10

Family

ID=18916887

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007168055A (en) * 2005-12-26 2007-07-05 Nsk Ltd Superfinishing method and superfinishing device
JP2009541692A (en) * 2006-06-26 2009-11-26 グレゴワール ペーニュ Ring rolling bearing with axial movement and molding tool with ring rolling bearing
US7837393B2 (en) * 2003-09-17 2010-11-23 Nsk Ltd. Self-aligning roller bearing and method of processing the same
CN103286669A (en) * 2012-02-24 2013-09-11 日本精工株式会社 Superfinishing apparatus
JP2017001101A (en) * 2015-06-04 2017-01-05 株式会社ジェイテクト Superfinishing device and composite grinder having superfinishing device
CN106737185A (en) * 2017-02-25 2017-05-31 温岭市万利轴承有限公司 Raceway groove milling drum and its bearing outer ring drive clamping device in a kind of bearing outer ring
CN109158981A (en) * 2018-08-02 2019-01-08 叶庆国 Automatic production and processing equipment for servo drive motor
CN112828741A (en) * 2019-11-22 2021-05-25 浙江翔宇密封件有限公司 Bearing grinding assembly
CN113231954A (en) * 2021-05-21 2021-08-10 青岛泰德汽车轴承股份有限公司 Superfinishing device and method for four-point contact ball bearing ring
CN116810503A (en) * 2023-08-30 2023-09-29 长沙华实半导体有限公司 Processing method of C-shaped cavity of plasma confinement ring

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7837393B2 (en) * 2003-09-17 2010-11-23 Nsk Ltd. Self-aligning roller bearing and method of processing the same
JP2007168055A (en) * 2005-12-26 2007-07-05 Nsk Ltd Superfinishing method and superfinishing device
JP2009541692A (en) * 2006-06-26 2009-11-26 グレゴワール ペーニュ Ring rolling bearing with axial movement and molding tool with ring rolling bearing
CN103286669A (en) * 2012-02-24 2013-09-11 日本精工株式会社 Superfinishing apparatus
CN103286669B (en) * 2012-02-24 2016-01-20 日本精工株式会社 Superfinishing equipment
JP2017001101A (en) * 2015-06-04 2017-01-05 株式会社ジェイテクト Superfinishing device and composite grinder having superfinishing device
CN106737185A (en) * 2017-02-25 2017-05-31 温岭市万利轴承有限公司 Raceway groove milling drum and its bearing outer ring drive clamping device in a kind of bearing outer ring
CN109158981A (en) * 2018-08-02 2019-01-08 叶庆国 Automatic production and processing equipment for servo drive motor
CN112828741A (en) * 2019-11-22 2021-05-25 浙江翔宇密封件有限公司 Bearing grinding assembly
CN112828741B (en) * 2019-11-22 2021-12-21 浙江翔宇密封件有限公司 Bearing grinding assembly
CN113231954A (en) * 2021-05-21 2021-08-10 青岛泰德汽车轴承股份有限公司 Superfinishing device and method for four-point contact ball bearing ring
CN116810503A (en) * 2023-08-30 2023-09-29 长沙华实半导体有限公司 Processing method of C-shaped cavity of plasma confinement ring
CN116810503B (en) * 2023-08-30 2023-12-08 长沙华实半导体有限公司 Processing method of C-shaped cavity of plasma confinement ring

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