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JP2007078078A - Retainer for rolling ball bearing and its manufacturing method - Google Patents

Retainer for rolling ball bearing and its manufacturing method Download PDF

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Publication number
JP2007078078A
JP2007078078A JP2005267014A JP2005267014A JP2007078078A JP 2007078078 A JP2007078078 A JP 2007078078A JP 2005267014 A JP2005267014 A JP 2005267014A JP 2005267014 A JP2005267014 A JP 2005267014A JP 2007078078 A JP2007078078 A JP 2007078078A
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Japan
Prior art keywords
ball
pocket
concave wall
pockets
cage
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JP2005267014A
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Japanese (ja)
Inventor
Takashi Kawai
高志 川井
Hiroki Tanimura
浩樹 谷村
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2005267014A priority Critical patent/JP2007078078A/en
Publication of JP2007078078A publication Critical patent/JP2007078078A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/425—Ball cages made from wire or sheet metal strips made from sheet metal from a single part, e.g. ribbon cages with one corrugated annular part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/08—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/43—Clutches, e.g. disengaging bearing

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

Abstract

<P>PROBLEM TO BE SOLVED: To improve lubricity between balls and the pockets of a retainer and prevent the balls from being scratched. <P>SOLUTION: In this method of manufacturing a crown type retainer for a rolling ball bearing having the pockets 5 in which the plurality of balls 3 are held between an inner ring 1 and an outer ring 2, the outer peripheral part of a disk material 7 in which recessed parts 8 for pockets are formed is raised by drawing to form an annular member 9 having the recessed parts 8 for pockets in the circumferential direction. The annular member 9 is moved in the axial direction, and the peripheral edge part of the recessed parts 8 for pockets are pressed by a ball-like tool 10 with a diameter smaller than the diameter of the balls 3 to form the pockets 5 in which radial outward spherical recessed walls 6 are formed at the peripheral edges thereof. When the balls 3 are assembled in the pockets 5, the balls 3 abut on the contact parts on the inner side of the outer peripheral edges 12 of the recessed walls 6, and the clearances 15 are formed between the balls 3 and the outer peripheral edges 12 of the recessed walls 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、電磁クラッチ等の各種機械装置に組み込まれる転がり玉軸受に使用される保持器およびその製作方法に関する。   The present invention relates to a cage used for a rolling ball bearing incorporated in various mechanical devices such as an electromagnetic clutch, and a manufacturing method thereof.

従来から、転がり玉軸受において、外輪と内輪の間に配置される複数のボールを、周方向に所定間隔をおいて保持するために冠型の保持器が使用されている。この冠型の保持器は、環状に形成されたものであり、その周方向に所定間隔をおいて、ボールを保持するためのポケットが複数個設けられる。これらのポケットは、軸方向同じ向きに開放し、その周縁部の全周に径方向外向きの球面状に隆起する凹面壁が形成され、前記ボールをこの凹面壁に接触させて保持するものである。   Conventionally, in a rolling ball bearing, a crown-shaped cage has been used to hold a plurality of balls arranged between an outer ring and an inner ring at predetermined intervals in the circumferential direction. This crown-shaped cage is formed in an annular shape, and is provided with a plurality of pockets for holding the ball at predetermined intervals in the circumferential direction. These pockets are opened in the same direction in the axial direction, and a concave wall is formed on the entire periphery of the peripheral edge so as to protrude in a spherical shape outward in the radial direction, and the ball is held in contact with the concave wall. is there.

上記保持器の製作方法は、図６に示すように、円板形素材３１の周方向に所定間隔をおいて、複数のポケット用凹部３２が設けられ、この円板形素材３１の前記ポケット用凹部３２を含む外周部が絞り加工により起こされ、前記円板形素材３１の中央部を打ち抜いて環状部材３３が製作される。この環状部材３３のポケット用凹部３２の周縁部が、径方向外向きにボール状冶具により押圧され、径方向外向きに隆起する球面状の凹面壁３４が形成され、周縁部の全周にわたって前記凹面壁３４を有するポケット３５が設けられた保持器３０が形成される。   As shown in FIG. 6, the cage is manufactured by providing a plurality of pocket recesses 32 at a predetermined interval in the circumferential direction of the disk-shaped material 31. The outer peripheral portion including the concave portion 32 is raised by drawing, and the annular member 33 is manufactured by punching out the central portion of the disk-shaped material 31. The peripheral portion of the pocket recess 32 of the annular member 33 is pressed radially outward by a ball-shaped jig to form a spherical concave wall 34 bulging outward in the radial direction. A cage 30 is formed which is provided with a pocket 35 having a concave wall 34.

これにより、円板形素材３１の厚みを、そのままポケット３５周縁部の凹面壁３４の厚みとして形成するため、ボールの支持力を十分に得られるとともに、磨耗に対する耐久性を向上させることができる（特許文献１ 参照）。   Thereby, since the thickness of the disk-shaped raw material 31 is formed as it is as the thickness of the concave wall 34 at the peripheral portion of the pocket 35, sufficient support force of the ball can be obtained and durability against wear can be improved ( (See Patent Document 1).

特開２００４−１６２７９４号公報JP 2004-162794 A

上記保持器３０は、上記ポケット３５を製作する際に、実際に使用される上記ボール３６と同等またはそれ以上の径を持つボール状冶具により、上記環状部材３３のポケット用凹部３２を径方向外向きに押圧していた。このため、前記保持器３０は、図７に示すように、ボール３６を組み込むと、このボール３６がポケット３５の凹面壁３４の外側周縁３７で接触することとなる。これにより、この外側周縁３７によりボール３６表面の潤滑剤が掻き取られるので、前記ボール３６と保持器３０のポケット３５との間で十分な潤滑性を得ることができないという問題があった。   When the pocket 35 is manufactured, the cage 30 uses a ball-shaped jig having a diameter equal to or larger than that of the ball 36 actually used to remove the pocket recess 32 of the annular member 33 from the radial direction. It was pushing in the direction. Therefore, as shown in FIG. 7, the cage 30 comes into contact with the outer peripheral edge 37 of the concave wall 34 of the pocket 35 when the ball 36 is incorporated. As a result, the lubricant on the surface of the ball 36 is scraped off by the outer peripheral edge 37, so that there is a problem that sufficient lubricity cannot be obtained between the ball 36 and the pocket 35 of the cage 30.

また、上記ボール３６が上記凹面壁３４の外側周縁３７と接触するため、ボール３６に傷が付くという問題もあった。   Further, since the ball 36 is in contact with the outer peripheral edge 37 of the concave wall 34, there is a problem that the ball 36 is damaged.

そこで、この発明は、ボールと保持器のポケットとの間における潤滑性を向上させ、また、ボールに傷が付くことを防ぐことを課題とする。   Accordingly, an object of the present invention is to improve lubricity between the ball and the pocket of the cage and to prevent the ball from being damaged.

上記の課題を解決するために、この発明は、ボールがポケットの凹面壁の外側周縁の内側部分で接触するようにしたのである。   In order to solve the above problems, the present invention is configured such that the ball comes into contact with an inner portion of the outer peripheral edge of the concave wall of the pocket.

このようにすると、保持器のポケットにボールを組み込んだ際に、ボール表面の潤滑剤が、凹面壁の外側周縁により掻き取られることがなくなり、また、ボールとポケットの凹面壁との間の接触面積が小さくなるため、潤滑性が向上するとともに、保持器の寿命を延ばすことができる。   This prevents the ball surface lubricant from being scraped off by the outer peripheral edge of the concave wall when the ball is installed in the cage pocket, and the contact between the ball and the concave wall of the pocket. Since the area is reduced, the lubricity is improved and the life of the cage can be extended.

また、保持器のポケットに組み込んだボールが、ポケットの凹面壁の外側周縁と接触しないため、ボールに傷が付くことを防ぐことができる。   Further, since the ball incorporated in the pocket of the cage does not come into contact with the outer peripheral edge of the concave wall of the pocket, it is possible to prevent the ball from being damaged.

具体的には、環状に形成された保持器本体の周方向に所定間隔をおいて、軸方向同じ向きに開放した複数のポケットを設け、このポケットの周縁部の全周に径方向外向きに隆起する球面状の凹面壁を形成し、前記各ポケットにボールを前記凹面壁に接触させて保持する転がり玉軸受用保持器において、前記凹面壁の全周にわたってその外側周縁よりも内側部分に、前記ボールとの接触部を設け、前記外側周縁と前記ボールとの間にすき間を設けた構成としたのである。   Specifically, a plurality of pockets opened in the same direction in the axial direction are provided at predetermined intervals in the circumferential direction of the retainer body formed in an annular shape, and radially outward on the entire circumference of the peripheral edge of the pocket. In a rolling ball bearing retainer that forms a raised spherical concave wall and holds the ball in contact with the concave wall in each of the pockets, on the inner side of the outer peripheral edge over the entire circumference of the concave wall, A contact portion with the ball is provided, and a gap is provided between the outer peripheral edge and the ball.

この構成において、上記ポケットの開放側両端部に周方向に広がるテーパー部をそれぞれ設け、前記ボールを、前記各テーパー部の上記接触部と、前記凹面壁の軸方向の底部の上記接触部との３箇所で接触させた構成を採用すると、保持器に組み込んだボールとポケットの凹面壁との接触面積がさらに小さくなり、潤滑性が向上するとともに回転時のトルクを小さくすることができる。   In this configuration, a tapered portion that extends in the circumferential direction is provided at both ends of the pocket on the opening side, and the ball is formed by the contact portion of each tapered portion and the contact portion of the bottom portion in the axial direction of the concave wall. If the structure made to contact in three places is employ | adopted, the contact area of the ball | bowl incorporated in the holder | retainer and the concave wall of a pocket will become smaller, lubricity will improve, and the torque at the time of rotation can be made small.

また、この転がり玉軸受用保持器の製作方法に関する発明として、保持器のポケットを製作する際に、実際に使用されるボールよりも小径のボール状冶具で、環状部材のポケット用凹部の周縁部を軸方向に押圧するようにしたのである。   Further, as an invention relating to a method for manufacturing the cage for the rolling ball bearing, when manufacturing the pocket of the cage, the peripheral portion of the concave portion for the pocket of the annular member is a ball-shaped jig having a smaller diameter than the ball actually used. Is pressed in the axial direction.

このようにすると、上記環状部材のポケット用凹部の周縁部が外向きに塑性変形し、周縁部の全周にわたり、ボール用冶具の径と同じ内径の凹面壁が形成されたポケットが設けられる。このポケットにボールを組み込むと、ボールの外径がポケットの凹面壁の内径よりも大きいため、ボールがポケットの凹面壁の外側周縁より内側部分の接触部に当たり、ポケットの凹面壁の外側周縁とボールとの間にすき間が設けられる。   In this way, the peripheral portion of the pocket recess of the annular member is plastically deformed outward, and a pocket is formed with a concave wall having the same inner diameter as the ball jig over the entire periphery. When the ball is incorporated in this pocket, the outer diameter of the ball is larger than the inner diameter of the concave wall of the pocket, so that the ball hits the contact portion of the inner side of the concave wall of the pocket and the outer peripheral edge of the pocket concave wall and the ball A gap is provided between

具体的には、円板形素材の周方向に所定間隔をおいて複数のポケット用凹部を設け、その円板形素材の前記ポケット用凹部を含む外周部を絞り加工により起こし、前記円板形素材の中央部を打ち抜いて環状部材を形成し、この環状部材の前記ポケット用凹部の周縁部を、ボール状冶具で押圧して、径方向外向きに隆起する球面状の凹面壁を形成し、この凹面壁を、周縁部の全周にわたって形成したポケットを設けた転がり玉軸受用保持器の製作方法において、前記ボール状冶具は、その外径が前記ボールの外径よりも小さいものであり、前記ポケット用凹部の周縁部を、前記ボール状冶具により軸方向に押圧する構成としたのである。   Specifically, a plurality of pocket recesses are provided at predetermined intervals in the circumferential direction of the disk-shaped material, and the outer periphery including the pocket recesses of the disk-shaped material is raised by drawing, and the disk shape The center part of the material is punched to form an annular member, and the peripheral part of the recess for pocket of the annular member is pressed with a ball-shaped jig to form a spherical concave wall that protrudes radially outward, In the manufacturing method of the rolling ball bearing retainer provided with the pocket formed with the concave wall over the entire circumference of the peripheral portion, the ball-shaped jig has an outer diameter smaller than the outer diameter of the ball, The peripheral edge portion of the pocket recess is pressed in the axial direction by the ball-shaped jig.

この発明は、以上のように構成したのでボールと保持器のポケットとの間における潤滑性を向上させることができる。   Since the present invention is configured as described above, the lubricity between the ball and the pocket of the cage can be improved.

また、保持器のポケットに組み込んだボールが、ポケットの凹面壁の外側周縁と接触しないため、ボールに傷が付くことを防ぐことができる。   Further, since the ball incorporated in the pocket of the cage does not come into contact with the outer peripheral edge of the concave wall of the pocket, it is possible to prevent the ball from being damaged.

以下、この発明の実施形態を添付図面図１〜図５に基づいて説明する。
この発明の一実施形態の転がり玉軸受は、図１（ａ）に示すように、内輪１と、外輪２と、この内輪１と外輪２との間に複数個組み込まれるボール３と、このボール３を周方向に所定間隔をおいて保持する冠型の保持器４とから構成される。なお、上記実施形態の転がり玉軸受は、図示するような複列アンギュラ玉軸受に限定されるものでなく、転がり玉軸受であればよく、内輪１、外輪２、ボール３は、この発明の範囲内で任意に設計可能である。 Embodiments of the present invention will be described below with reference to FIGS.
As shown in FIG. 1A, a rolling ball bearing according to an embodiment of the present invention includes an inner ring 1, an outer ring 2, a plurality of balls 3 incorporated between the inner ring 1 and the outer ring 2, and the ball. And a crown-shaped cage 4 that holds 3 at a predetermined interval in the circumferential direction. In addition, the rolling ball bearing of the said embodiment is not limited to a double row angular contact ball bearing as illustrated, What is necessary is just a rolling ball bearing, and the inner ring | wheel 1, the outer ring | wheel 2, and the ball | bowl 3 are the scope of this invention. Can be arbitrarily designed within.

上記保持器４は、図１（ｂ）に示すように、環状に形成された保持器本体に、その周方向に所定間隔をおいて複数のポケット５が設けられ、この各ポケット５が軸方向同じ側に開放したものである。   As shown in FIG. 1 (b), the cage 4 is provided with a plurality of pockets 5 at predetermined intervals in the circumferential direction on a cage body formed in an annular shape. Open to the same side.

上記各ポケット５は、その周縁部の全周にわたって径方向外向きに隆起する球面状の凹面壁６が形成され、前記ポケット５の開放側両端部に、軸方向外向きにテーパー部１６がそれぞれ設けられる。   Each of the pockets 5 is formed with a spherical concave wall 6 protruding outward in the radial direction over the entire circumference of the peripheral edge portion, and tapered portions 16 are provided outward in the axial direction at both ends of the open side of the pocket 5. Provided.

この一実施形態の転がり玉軸受の保持器４の製作方法は、図２（ａ）に示すように、まず、円板形素材７の周方向に所定間隔をおいて複数のポケット用凹部８が設けられる。このポケット用凹部８は、円弧部分と、その円弧部分の両端から広がるガイド用テーパー部１１、１１とから形成される。   As shown in FIG. 2 (a), the rolling ball bearing retainer 4 of this embodiment is manufactured by first having a plurality of pocket recesses 8 at predetermined intervals in the circumferential direction of the disk-shaped material 7. Provided. The pocket recess 8 is formed by an arc portion and guide taper portions 11 and 11 extending from both ends of the arc portion.

次に、図２（ｂ）に示すように、上記ポケット用凹部８が設けられた円板形素材７の前記ポケット用凹部８を含む外周部（同図（ａ）の一点鎖線の外側部分）を、絞り装置（図示省略）により絞り加工により起こし、円板形素材７の中央部を打ち抜いて環状部材９を製作する。   Next, as shown in FIG. 2 (b), the outer peripheral portion including the pocket recess 8 of the disk-shaped material 7 provided with the pocket recess 8 (the outer portion of the dashed line in FIG. 2A). Is caused by drawing with a drawing device (not shown), and the center part of the disk-shaped material 7 is punched to produce the annular member 9.

上記環状部材９を、図３（ａ）（ｂ）に示すように、軸方向に移動させ、そのポケット用凹部８の各ガイド用テーパー部１１、１１を、固定したボール状冶具１０に押し当てる。   As shown in FIGS. 3A and 3B, the annular member 9 is moved in the axial direction, and the guide taper portions 11 and 11 of the pocket recess 8 are pressed against the fixed ball-shaped jig 10. .

さらに、上記環状部材９を軸方向に移動させると、上記ボール状冶具１０により、ポケット用凹部８のガイド用テーパー部１１が環状部材９の周方向に押し広げられるとともに、ポケット用凹部８の周縁部が全周にわたって環状部材９の径方向外向きに押圧される（図４（ａ）参照）。   When the annular member 9 is further moved in the axial direction, the ball-shaped jig 10 causes the guide taper portion 11 of the pocket concave portion 8 to be expanded in the circumferential direction of the annular member 9 and the peripheral edge of the pocket concave portion 8. The portion is pressed outward in the radial direction of the annular member 9 over the entire circumference (see FIG. 4A).

前記ボール状冶具１０は、その径Ｄ２が上記ボールの径Ｄ１よりも小さいものであり、図４（ｂ）に示すように、ポケット用凹部８の周縁部がその表面に沿って外向きに塑性変形し、球面状の凹面壁６が上記環状部材９の径方向に隆起して形成される。   The ball-shaped jig 10 has a diameter D2 smaller than the diameter D1 of the ball, and as shown in FIG. 4B, the peripheral portion of the pocket recess 8 is plastic outward along the surface thereof. The spherical concave wall 6 is deformed and formed so as to protrude in the radial direction of the annular member 9.

図４（ｃ）に示すように、上記ボール状冶具１０がポケット用凹部８から取り出されると、径方向外向きに隆起する球面状の凹面壁６が周縁部に形成されたポケット５が設けられる。このポケット５は、軸方向の同じ側が開放しその開放側両端にテーパー部１６、１６が設けられたものであり、上記凹面壁６に囲まれた部分がだ円に形成される。   As shown in FIG. 4 (c), when the ball-shaped jig 10 is taken out from the pocket recess 8, a pocket 5 having a spherical concave wall 6 bulging outward in the radial direction is provided at the peripheral edge. . The pocket 5 is open on the same side in the axial direction and is provided with tapered portions 16 and 16 at both ends of the open side, and a portion surrounded by the concave wall 6 is formed in an ellipse.

このポケット５の凹面壁６に囲まれた部分がだ円に形成されるのは、前記ボール状冶具１０がポケット用凹部８から取り出されると、球面状の凹面壁６のかかる圧力が取り除かれ、この凹面壁６の変形が弾性的に一部回復するからである。これにより、前記凹面壁６の開放側両端部の間隔が、ボール状冶具１０による押圧時での間隔よりも小さくなるからである。   The portion surrounded by the concave wall 6 of the pocket 5 is formed into an ellipse because the pressure applied to the spherical concave wall 6 is removed when the ball-shaped jig 10 is taken out from the pocket concave portion 8. This is because the deformation of the concave wall 6 partially recovers elastically. This is because the distance between the open-side ends of the concave wall 6 is smaller than the distance when the ball-shaped jig 10 is pressed.

上記ポケット５の凹面壁６は、図５（ｂ）に示すように、その内径Ｄ２がボール３の径Ｄ１よりも小さいため、このポケット５にボール３が組み込まれると、ボール３がポケット５の凹面壁６の外側周縁１２よりも内側の接触部１４に当たる。この接触部１４でボール３と凹面壁６とが接触するので、ボール３と凹面壁６の外側周縁１２との間にすき間１５が形成される。   As shown in FIG. 5B, the concave wall 6 of the pocket 5 has an inner diameter D2 smaller than the diameter D1 of the ball 3, so that when the ball 3 is incorporated into the pocket 5, the ball 3 It hits the contact portion 14 inside the outer peripheral edge 12 of the concave wall 6. Since the ball 3 and the concave wall 6 are in contact with each other at the contact portion 14, a gap 15 is formed between the ball 3 and the outer peripheral edge 12 of the concave wall 6.

また、上記ポケット５は、その凹面壁６に囲まれた形状がだ円となっているので、このポケット５に上記ボール３が組み込まれると、図５（ａ）に示すように、ボール３がポケット５の開放側両端部に設けられた各テーパー部１６の接触部１４と、凹面壁６の軸方向底部１３の接触部１４との３箇所で接触する。   Since the pocket 5 has an ellipse shape surrounded by the concave wall 6, when the ball 3 is assembled in the pocket 5, as shown in FIG. The contact portion 14 of each taper portion 16 provided at both ends of the open side of the pocket 5 and the contact portion 14 of the bottom portion 13 in the axial direction of the concave wall 6 make contact.

このようにして、上記ポケット５が周方向の複数箇所に設けられた転がり玉軸受用の保持器４が作成される。   In this way, the rolling ball bearing retainer 4 in which the pockets 5 are provided at a plurality of locations in the circumferential direction is created.

この転がり玉軸受用保持器４にボール３を複数個保持させると、図５（ａ）（ｂ）に示すように、ボール３は、ポケット５の凹面壁６の３箇所で保持され、球面状の凹面壁６の内側の接触部１４で接触する。このため、ボール３と凹面壁６との接触面積が小さくなるとともに、ボール３表面の潤滑剤がポケット５の凹面壁６の外側周縁１２により掻き取られることがなくなるので、潤滑性が向上して、保持器４の寿命を延ばすことができる。   When a plurality of balls 3 are held on the rolling ball bearing cage 4, the balls 3 are held at three locations on the concave wall 6 of the pocket 5 as shown in FIGS. 5 (a) and 5 (b). Contact is made at the contact portion 14 inside the concave wall 6. For this reason, the contact area between the ball 3 and the concave wall 6 is reduced, and the lubricant on the surface of the ball 3 is not scraped off by the outer peripheral edge 12 of the concave wall 6 of the pocket 5. The life of the cage 4 can be extended.

また、ボール３が、凹面壁６の内側の接触部１４で接触するので、ボール３表面に凹面壁６の外側周縁１２との接触によって傷が付くことを防止することができる。   Further, since the ball 3 comes into contact with the inner contact portion 14 of the concave wall 6, it is possible to prevent the surface of the ball 3 from being damaged by contact with the outer peripheral edge 12 of the concave wall 6.

（ａ）実施形態の転がり軸受用保持器の使用状態を示す断面図、（ｂ）同上の転がり軸受用保持器を示す斜視図(A) Sectional drawing which shows the use condition of the cage for rolling bearings of embodiment, (b) The perspective view which shows the cage for rolling bearings same as the above. （ａ）同上の製作前の円板形素材を示す平面図、（ｂ）同上の製作前の環状部材を示す内側面図(A) The top view which shows the disk-shaped raw material before manufacture same as the above, (b) The inner side view which shows the annular member before manufacture same as the above （ａ）同上の環状部材のボール状冶具圧入前の状態を示す内側面図、（ｂ）Ａ−Ａ線における一部断面図(A) Inner side view showing the state of the annular member before the press-fitting of the ball-shaped jig, (b) Partial sectional view taken along line AA （ａ）同上の環状部材のボール状冶具圧入時の状態を示す内側面図、（ｂ）Ｂ−Ｂ線における一部断面図、（ｃ）同上の環状部材のボール状冶具を抜いた状態を示す内側面図(A) Inner side view showing the state of the annular member of the above-mentioned annular member during press-fitting, (b) Partial cross-sectional view taken along the line BB, (c) State of removing the ball-shaped jig of the annular member of the above. Inner side view （ａ）同上のボールを保持した状態を示す内側面図、（ｂ）同上のボールを保持した状態を示す断面図(A) Inner side view showing a state of holding the same ball, (b) Cross-sectional view showing a state of holding the same ball （ａ）従来の転がり軸受用保持器の製作前の円板形素材を示す平面図、（ｂ）従来の環状部材を示す内側面図、（ｃ）従来の転がり軸受用保持器を示す内側面図(A) Plan view showing a disk-shaped material before production of a conventional rolling bearing cage, (b) Inner side view showing a conventional annular member, (c) Inner side surface showing a conventional rolling bearing cage. Figure 従来のボールを保持した状態を示す断面図Sectional drawing which shows the state holding the conventional ball | bowl

符号の説明Explanation of symbols

１ 内輪
２ 外輪
３ ボール
４ 保持器
５ ポケット
６ 凹面壁
７ 円板形素材
８ ポケット用凹部
９ 環状部材
１０ ボール状冶具
１１ ガイド用テーパー部
１２ 外側周縁
１３ 底部
１４ 接触部
１５ すき間
１６ テーパー部
３０ 保持器
３１ 円板形素材
３２ ポケット用凹部
３３ 環状部材
３４ 凹面壁
３５ ポケット
３６ ボール
３７ 外側周縁 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Ball 4 Cage 5 Pocket 6 Concave wall 7 Disc-shaped material 8 Recess 9 for pocket 9 Annular member 10 Ball-shaped jig 11 Tapered part 12 for outer periphery 13 Bottom part 14 Contact part 15 Clearance 16 Taper part 30 Holding Vessel 31 disk-shaped material 32 pocket recess 33 annular member 34 concave wall 35 pocket 36 ball 37 outer periphery

Claims (3)

環状に形成された保持器本体の周方向に所定間隔をおいて、軸方向同じ向きに開放した複数のポケット（５）を設け、このポケット（５）の周縁部の全周に径方向外向きに隆起する球面状の凹面壁（６）を形成し、前記各ポケット（５）にボール（３）を前記凹面壁（６）に接触させて保持する転がり玉軸受用保持器において、
上記凹面壁（６）の全周にわたってその外側周縁（１２）よりも内側部分に、上記ボール（３）との接触部（１４）を設け、前記外側周縁（１２）と前記ボール（３）との間にすき間（１５）を設けたことを特徴とする転がり玉軸受用保持器。 A plurality of pockets (5) opened in the same direction in the axial direction are provided at predetermined intervals in the circumferential direction of the annular retainer body, and radially outward on the entire circumference of the peripheral edge of the pocket (5). A rolling ball bearing cage in which a spherical concave wall (6) is formed, and the ball (3) is held in contact with the concave wall (6) in each pocket (5).
A contact portion (14) with the ball (3) is provided on the inner side of the outer peripheral edge (12) over the entire circumference of the concave wall (6), and the outer peripheral edge (12), the ball (3), A cage for a rolling ball bearing, wherein a clearance (15) is provided between the two. 上記ポケット（５）の開放側両端部に周方向に広がるテーパー部（１６、１６）をそれぞれ設け、上記ボール（３）を、前記各テーパー部（１６、１６）の上記接触部（１４）と、上記凹面壁（６）の軸方向の底部（１３）の上記接触部（１４）との３箇所で接触させたことを特徴とする請求項１に記載の転がり玉軸受用保持器。   Tapered portions (16, 16) extending in the circumferential direction are provided at both ends of the open side of the pocket (5), and the balls (3) are connected to the contact portions (14) of the tapered portions (16, 16). The rolling ball bearing retainer according to claim 1, wherein contact is made at three locations with the contact portion (14) of the bottom (13) in the axial direction of the concave wall (6). 円板形素材（７）の周方向に所定間隔をおいて複数のポケット用凹部（８）を設け、その円板形素材（７）の前記ポケット用凹部（８）を含む外周部を絞り加工により起こし、前記円板形素材（７）の中央部を打ち抜いて環状部材（９）を形成し、この環状部材（９）の前記ポケット用凹部（８）の周縁部を、ボール状冶具（１０）で押圧して、径方向外向きに隆起する球面状の凹面壁（６）を形成し、この凹面壁（６）を、周縁部の全周に形成したポケット（５）を設けた転がり玉軸受用保持器の製作方法において、
上記ボール状冶具（１０）は、その外径が上記ボール（３）の外径よりも小さいものであり、前記ポケット用凹部（８）の周縁部を、前記ボール状冶具（１０）により軸方向に押圧することを特徴とする転がり玉軸受用保持器の製作方法。 A plurality of pocket recesses (8) are provided at predetermined intervals in the circumferential direction of the disk-shaped material (7), and the outer periphery including the pocket recesses (8) of the disk-shaped material (7) is drawn. The annular member (9) is formed by punching out the central portion of the disk-shaped material (7), and the peripheral portion of the pocket recess (8) of the annular member (9) is formed into a ball-shaped jig (10 ) To form a spherical concave wall (6) that protrudes radially outward, and this concave wall (6) is a rolling ball provided with pockets (5) formed on the entire circumference of the peripheral edge. In the manufacturing method of the bearing cage,
The ball-shaped jig (10) has an outer diameter smaller than the outer diameter of the ball (3), and the peripheral edge of the pocket recess (8) is axially moved by the ball-shaped jig (10). A method of manufacturing a cage for a rolling ball bearing, wherein the cage is pressed against.
JP2005267014A 2005-09-14 2005-09-14 Retainer for rolling ball bearing and its manufacturing method Pending JP2007078078A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009216240A (en) * 2008-02-14 2009-09-24 Ntn Corp Roller bearing
JP2010121649A (en) * 2008-11-17 2010-06-03 Ntn Corp Self-aligning ball bearing with cage
USD822082S1 (en) * 2015-11-20 2018-07-03 Ntn Corporation Separator for a ball bearing
USD829787S1 (en) * 2015-11-20 2018-10-02 Ntn Corporation Separator for a ball bearing
USD836144S1 (en) * 2016-02-25 2018-12-18 Ntn Corporation Separator for a ball bearing
CN110043565A (en) * 2018-01-15 2019-07-23 舍弗勒技术股份两合公司 Retainer for ball bearing and ball bearing
CN115681326A (en) * 2022-10-27 2023-02-03 人本股份有限公司 High-bearing ball column hybrid bearing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009216240A (en) * 2008-02-14 2009-09-24 Ntn Corp Roller bearing
JP2010121649A (en) * 2008-11-17 2010-06-03 Ntn Corp Self-aligning ball bearing with cage
USD822082S1 (en) * 2015-11-20 2018-07-03 Ntn Corporation Separator for a ball bearing
USD829787S1 (en) * 2015-11-20 2018-10-02 Ntn Corporation Separator for a ball bearing
USD836144S1 (en) * 2016-02-25 2018-12-18 Ntn Corporation Separator for a ball bearing
CN110043565A (en) * 2018-01-15 2019-07-23 舍弗勒技术股份两合公司 Retainer for ball bearing and ball bearing
CN115681326A (en) * 2022-10-27 2023-02-03 人本股份有限公司 High-bearing ball column hybrid bearing

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