JP2000167641A - Method for forming rough shape stock for bearing and stock for forming the same - Google Patents
Method for forming rough shape stock for bearing and stock for forming the sameInfo
- Publication number
- JP2000167641A JP2000167641A JP10348910A JP34891098A JP2000167641A JP 2000167641 A JP2000167641 A JP 2000167641A JP 10348910 A JP10348910 A JP 10348910A JP 34891098 A JP34891098 A JP 34891098A JP 2000167641 A JP2000167641 A JP 2000167641A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- cylindrical portion
- bearing
- die
- stock
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、型番が異なる軸
受の軸受素形材の形成方法および形成用素材に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a material for forming a bearing base material for bearings having different model numbers.
【０００２】[0002]
【従来の技術】軸受の外輪および内輪の形成用素材とな
る軸受素形材を１つの素材から形成する方法の１つとし
て図６に示したものが従来から知られている。この軸受
素形材の製造方法は、下記の第１工程乃至第５工程から
成る。2. Description of the Related Art As one of the methods for forming a bearing element from a single material as a material for forming an outer ring and an inner ring of a bearing, a method shown in FIG. 6 is conventionally known. The method of manufacturing the bearing element comprises the following first to fifth steps.
【０００３】第１工程；図６（Ｉ）に示す柱状素材Ｂ0
を熱間により軸方向に据込んで図６（II）に示すよう
に、円弧状外周面８０を有する円盤状素材Ｂ1 を形成す
る。 第２工程；円盤状素材Ｂ1 を型鍛造により、図６（III
）に示す段付きの円筒状成形品Ｂ2 を形成する。ここ
で、円筒状成形品Ｂ2 は、外輪素形材となる外筒部８１
内において内輪素形材となる内筒部８２の端部が一体化
され、その内筒部８２内に底８３が設けられている。 第３工程；円筒状成形品Ｂ2 を図６（III ）に示す鎖線
位置に沿って軸方向に切り離し、図６（IV）に示すよう
に、外筒部８１と底付きの内筒部８２とに分離する。 第４工程；底付き内筒部８２を打抜き装置によって、図
６（Ｖ）に示すように、底８３を打抜き、内輪素形材８
４を形成する。 第５工程；外筒部８１をローリング成形により拡径する
と共に、内径面に環状溝８５を成形して、図６（VI）に
示すように外輪素形材８６を形成する。First step: columnar material B 0 shown in FIG.
The Nde upsetting in the axial direction by hot, as shown in FIG. 6 (II), to form a disk-shaped material B 1 having an arcuate outer peripheral surface 80. The second step, by die forging the disc-shaped material B 1, FIG. 6 (III
) A cylindrical molded article B 2 stepped shown in form. Here, the cylindrical molded product B 2 is formed of an outer cylindrical portion 81 serving as an outer ring raw material.
Inside, an end of an inner cylindrical portion 82 serving as an inner ring raw material is integrated, and a bottom 83 is provided in the inner cylindrical portion 82. Third step; detach axially a cylindrical molded article B 2 along the dashed line position shown in FIG. 6 (III), as shown in FIG. 6 (IV), the outer cylinder portion 81 and the bottomed of the inner cylindrical portion 82 And separated into Fourth step: as shown in FIG. 6 (V), the bottom 83 is punched out from the inner cylindrical portion 82 with a bottom by a punching device.
4 is formed. Fifth step: The outer cylindrical portion 81 is expanded in diameter by rolling, and an annular groove 85 is formed in the inner diameter surface to form an outer ring element 86 as shown in FIG. 6 (VI).
【０００４】第１工程の据込みから第４工程の分離まで
の処理は、多段送り型の鍛造機によって熱間により連続
的に処理され、その処理後において外筒部８１および内
筒部８２が鍛造機から取り出される。一方、第５工程の
拡径は、ロールフォーマにより冷間によって成形され
る。[0004] The processing from the upsetting in the first step to the separation in the fourth step is continuously performed hot by a multi-stage forging machine, and after the processing, the outer tube portion 81 and the inner tube portion 82 are processed. Removed from the forging machine. On the other hand, the diameter expansion in the fifth step is performed by cold forming using a roll former.
【０００５】第４工程によって形成された内輪素形材８
４および第５工程によって形成された外輪素形材８６
は、旋削加工、切削加工、熱処理等の加工を経て、図７
に示す玉軸受９０の外輪９１や内輪９２とされる。[0005] The inner ring element 8 formed by the fourth step
Outer ring raw material 86 formed by the fourth and fifth steps
Is processed through turning, cutting, heat treatment, etc.
The outer ring 91 and the inner ring 92 of the ball bearing 90 shown in FIG.
【０００６】[0006]
【発明が解決しようとする課題】ところで、図６に示す
軸受素形材の形成方法においては、軸受素形材の形成用
素材である円筒状成形品Ｂ2 から単一サイズの軸受の外
輪素形材と内輪素形材とを形成するものであるため、軸
受のサイズが大きくなるに従って内筒部８２内の底８３
の外径も大きくなり、この底８３は打抜きによって抜き
かすとして処理されるので、材料のロスが大きいという
不都合がある。[SUMMARY OF THE INVENTION Incidentally, in the method of forming the bearing formed and fabricated material shown in FIG. 6, the outer ring element of the bearing of a single size from the cylindrical molded article B 2 which is a material for forming the bearing industrial castings Since the shape and the inner ring element are formed, the bottom 83 in the inner cylindrical portion 82 increases as the size of the bearing increases.
Has a large outer diameter, and the bottom 83 is processed as a chip by punching, so that there is a disadvantage that a large loss of material occurs.
【０００７】この発明の課題は、材料のロスを少なくす
ることができるようにした軸受素形材の形成方法および
形成用素材を提供することである。An object of the present invention is to provide a method for forming a bearing element and a material for forming the same, which can reduce material loss.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに、この発明に係る軸受素形材の形成方法において
は、外径が異なり、それぞれが軸受の軌道輪素形材とな
る３本以上の円筒部が軸方向に段差をもって一体化さ
れ、最小径の円筒部内に底が形成された軸受素形材の形
成用素材を型鍛造により成形する工程と、上記形成用素
材の各円筒部を内径面に沿って軸方向に切り離すと共
に、最小径の円筒部の底を打抜く工程、とから成る構成
を採用している。In order to solve the above-mentioned problems, in the method of forming a bearing element material according to the present invention, three bearing elements having different outer diameters and each being a bearing ring element material are used. A step of forming, by die forging, a material for forming a bearing material having a bottom formed in a cylindrical portion having a minimum diameter, wherein the cylindrical portion is integrated with a step in the axial direction, and each cylindrical portion of the forming material In the axial direction along the inner diameter surface, and punching out the bottom of the cylindrical portion having the minimum diameter.
【０００９】また、この発明に係る軸受素形材の形成用
素材においては、外径が異なり、それぞれが軸受の軌道
輪素形材となる３本以上の円筒部を軸方向に段差をもっ
て一体に形成し、最小径の円筒部内に底を設けた構成を
採用したのである。In the material for forming a bearing element according to the present invention, three or more cylindrical portions each having a different outer diameter and each serving as a bearing ring element are integrally formed with a step in the axial direction. That is, a configuration was adopted in which a bottom was provided in a cylindrical portion having a minimum diameter.
【００１０】上記のように、外径が相違し、それぞれが
軌道輪素形材となる３本以上の円筒部を軸方向に段差を
もって一体に成形することにより、最小径の円筒部内に
設けられた抜きかすとしての底の外径を小さくすること
ができる。[0010] As described above, three or more cylindrical portions having different outer diameters, each of which serves as a raceway element, are integrally formed with a step in the axial direction so as to be provided in the cylindrical portion having the minimum diameter. The outer diameter of the bottom as a lint can be reduced.
【００１１】このため、上記形成用素材を用いて各円筒
部を軸方向に切り離す軸受素形材の形成において、材料
のロスをきわめて少なくすることができる。For this reason, the loss of material can be extremely reduced in the formation of the bearing base material in which each cylindrical portion is cut off in the axial direction using the above forming material.
【００１２】[0012]
【発明の実施の形態】以下、この発明の実施の形態を図
１乃至図５に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１３】図１乃至図４は、型番の異なる２つの軸受
の軸受素形材の形成方法を示し、図１は、その形成方法
によって成形される成形品を段階的に示すフロー図であ
る。FIGS. 1 to 4 show a method of forming bearing raw materials of two bearings having different model numbers, and FIG. 1 is a flow chart showing stepwise a molded product formed by the forming method.
【００１４】図１（Ｉ）に示される柱状素材Ａ0 は、高
炭素クロム軸受鋼、肌焼鋼、機械構造用鋼等の硬い材料
を素材としている。この柱状素材Ａ0 は、第１工程にお
いて、熱間により、軸方向への据込みが行われる。その
据込みによって、図１（II）に示すように、円弧状外周
面１を有する円盤状素材Ａ1 が成形される。The columnar material A 0 shown in FIG. 1 (I) is made of a hard material such as high carbon chromium bearing steel, case hardening steel, steel for machine structural use, and the like. In the first step, the columnar raw material A 0 is hotly set up in the axial direction. By the upsetting, as shown in FIG. 1 (II), a disc-shaped material A1 having an arc-shaped outer peripheral surface 1 is formed.
【００１５】円盤状素材Ａ1 は、第２工程において型鍛
造される。図２は型鍛造を行う成形装置１０を示す。成
形装置１０は固定型１１と、その固定型１１に対して進
退自在に設けられた可動型１２とから成る。The disc-shaped material A 1 is forged in a second step. FIG. 2 shows a molding apparatus 10 for performing die forging. The molding device 10 includes a fixed mold 11 and a movable mold 12 provided to be able to advance and retreat with respect to the fixed mold 11.
【００１６】固定型１１は、固定盤１３を有し、その固
定盤１３上にホルダ支持板１４およびダイホルダ１５が
設けられている。また、固定盤１３上にはホルダ支持板
１４およびダイホルダ１５内に、下方から、バッキング
プレート１６、筒状のガイドピース１７およびダイ１８
が設けられている。The fixed die 11 has a fixed platen 13, and a holder support plate 14 and a die holder 15 are provided on the fixed platen 13. A backing plate 16, a cylindrical guide piece 17 and a die 18 are placed on the fixed platen 13 from below into a holder support plate 14 and a die holder 15.
Is provided.
【００１７】ダイ１８は、第１成形孔１９ａ、第２成形
孔１９ｂおよび第３成形孔１９ｃを有する。これらの各
成形孔１９ａ乃至１９ｃの形成を容易とするため、ダイ
１８を第１成形孔１９ａが設けられた第１ダイ１８ａ
と、第２成形孔１９ｂおよび第３成形孔１９ｃが設けら
れた第２ダイ１８ｂとで形成している。The die 18 has a first forming hole 19a, a second forming hole 19b, and a third forming hole 19c. In order to facilitate the formation of each of these forming holes 19a to 19c, the die 18 is connected to the first die 18a having the first forming hole 19a.
And a second die 18b provided with a second forming hole 19b and a third forming hole 19c.
【００１８】第２ダイ１８ｂにおける第３成形孔１９ｃ
内にはノックアウト用スリーブ２０の先端部が挿入され
ている。スリーブ２０は前記ガイドピース１７と第２ダ
イ１８ｂの内側に跨がるようにして組付けられたガイド
筒２１によりスライド自在に支持されている。また、ス
リーブ２０は、その背部に設けられたノックアウトピン
２２の上昇による突き上げにより上方に移動するように
なっており、下端がバッキングプレート１６に支持され
る状態において先端が第３成形孔１９ｃ内に臨んでい
る。The third forming hole 19c in the second die 18b
The tip of the knockout sleeve 20 is inserted into the inside. The sleeve 20 is slidably supported by a guide cylinder 21 assembled so as to straddle the inside of the guide piece 17 and the second die 18b. Further, the sleeve 20 is configured to move upward by being pushed up by the knock-out pin 22 provided on the back thereof, and the leading end is positioned in the third forming hole 19c in a state where the lower end is supported by the backing plate 16. I'm coming.
【００１９】スリーブ２０内側にはポンチ２３が設けら
れている。ポンチ２３は軸方向に非可動に支持され、先
端はノックアウト用スリーブ２０の先端より上位に位置
している。A punch 23 is provided inside the sleeve 20. The punch 23 is non-movably supported in the axial direction, and the tip is located higher than the tip of the knockout sleeve 20.
【００２０】可動型１２は、ダイ１８と同軸上に配置さ
れたポンチ２４を有する。ポンチ２４には、先端から第
１突部２５ａ、第２突部２５ｂ、第３突部２５ｃおよび
第４突部２５ｄが設けられ、上記第４突部２５ｄの外径
は前記ダイ１８の第１成形孔１９ａの内径と略等しくな
っている。The movable mold 12 has a punch 24 arranged coaxially with the die 18. The punch 24 is provided with a first projection 25a, a second projection 25b, a third projection 25c, and a fourth projection 25d from the tip, and the outer diameter of the fourth projection 25d is the first diameter of the die 18. It is substantially equal to the inner diameter of the forming hole 19a.
【００２１】図１（II）に示す円盤状素材Ａ1 は、図２
（Ｉ）に示すように、ダイ１８に形成された第１成形孔
１９ａの底上にセットされ、可動型１２の固定型１１に
向けての移動により、熱間成形される。The disc-shaped material A 1 shown in FIG. 1 (II) is 2
As shown in (I), it is set on the bottom of the first forming hole 19a formed in the die 18 and is hot-formed by moving the movable die 12 toward the fixed die 11.
【００２２】図２（II）はその成形状態を示し、円柱状
素材Ａ1 は、ダイ１８の第１成形孔１９ａ乃至第３成形
孔１９ｃによって外径が成形されると共に、固定型１１
におけるポンチ２３および可動型１２における第１突部
２５ａ乃至第３突部２５ｃによって内径が成形される。
また、第４突部２５ｄの下面によって上面が成形され、
軸受素形材の形成用素材Ａ2 が形成される。FIG. 2 (II) shows the molding state. The cylindrical material A 1 has an outer diameter formed by the first forming hole 19 a to the third forming hole 19 c of the die 18 and the fixed die 11.
The inner diameter is formed by the punch 23 and the first to third protrusions 25a to 25c of the movable die 12.
Also, the upper surface is formed by the lower surface of the fourth protrusion 25d,
Material A 2 is formed for forming the bearing and fabricated material.
【００２３】形成用素材Ａ2 は、可動型１２の後退後、
スリーブ２０の軸方向の移動によって固定型１１のダイ
１８から取り出される。After forming material A 2 is retracted, movable mold 12 is
The sleeve 20 is removed from the die 18 of the fixed mold 11 by the axial movement.
【００２４】図１（III ）は成形装置１０から取り出さ
れた形成用素材Ａ2 を示す。この形成用素材Ａ2 は、軸
受の外輪素形材となる第１円筒部Ｒ1 と、内輪素形材と
なる第２円筒部Ｒ2 と、上記軸受と型式の異なる軸受の
軸受素形材となる第３円筒部Ｒ3 とを有し、各円筒部Ｒ
1 乃至Ｒ3 には軸方向に段差がつけられている。また、
第２円筒部Ｒ2 の外径は第１円筒部Ｒ1 の内径と略同径
とされ、第３円筒部Ｒ3 の外径は第２円筒部Ｒ2 の内径
と略同径とされ、その第３円筒部Ｒ3 内には底１が設け
られている。FIG. 1 (III) shows the forming material A 2 taken out of the forming apparatus 10. The forming material A 2 includes a first cylindrical portion R 1 serving as an outer ring material, a second cylindrical portion R 2 serving as an inner ring material, and a bearing material of a bearing having a different type from the above bearing. and a third cylindrical portion R 3 to be, the cylindrical portion R
A step is attached axially to 1 to R 3. Also,
The outer diameter of the second cylindrical portion R 2 is substantially equal to the inner diameter of the first cylindrical portion R 1 , the outer diameter of the third cylindrical portion R 3 is substantially equal to the inner diameter of the second cylindrical portion R 2 , bottom 1 is provided on its third cylindrical portion R 3.
【００２５】上記形成用素材Ａ2 は、次に、図３
（Ｉ）、（II）に示す分離・打抜き装置３０にセットさ
れ、その分離・打抜き装置３０によって第１円筒部Ｒ1
と第２円筒部Ｒ2 の分離、および底１の打抜きとが熱間
により同時に行われる。Next, the material A 2 for forming is shown in FIG.
The first cylindrical portion R 1 is set in the separation / punching device 30 shown in (I) and (II), and is set by the separation / punching device 30.
And the separation of the second cylindrical portion R 2 and the punching of the bottom 1 are simultaneously performed by hot.
【００２６】分離・打抜き装置３０は、固定型３１とそ
の固定型３１に対して進退自在に設けられた可動型３２
とから成る。固定型３１は固定盤３３を有し、その固定
盤３３上に支持されたダイホルダ３４内に、下方から、
バッキングプレート３５、筒状の間隔ピース３６および
打抜き用のダイ３７を設けている。The separating / punching device 30 includes a fixed mold 31 and a movable mold 32 provided to be movable with respect to the fixed mold 31.
Consisting of The fixed die 31 has a fixed platen 33 and a die holder 34 supported on the fixed platen 33, from below,
A backing plate 35, a cylindrical spacing piece 36, and a die 37 for punching are provided.
【００２７】ダイ３７は抜き孔３８を有し、その抜き孔
３８の内径は、形成用素材Ａ2 における第２円筒部Ｒ2
がほぼぴったりと嵌り合う大きさとされている。The die 37 has a hole 38, and the inside diameter of the hole 38 is equal to the second cylindrical portion R 2 of the forming material A 2 .
Are sized to fit almost exactly.
【００２８】ダイ３７の抜き孔３８内にはノックアウト
用スリーブ３９の先端部が挿入されている。スリーブ３
９は、間隔ピース３６内に組込まれたガイド筒４０によ
って軸方向にスライド自在に支持され、その下方に設け
られたノックアウトピン４１の上昇動による突き上げに
よって上方へ移動する。The tip of a knockout sleeve 39 is inserted into the hole 38 of the die 37. Sleeve 3
9 is slidably supported in the axial direction by a guide cylinder 40 incorporated in the spacing piece 36, and moves upward due to the upward movement of a knockout pin 41 provided thereunder.
【００２９】上記固定型３１と前記可動型３２との間に
はストリッパプレート４３が設けられ、そのストリッパ
プレート４３に筒状のストリッパ４４が取付けられてい
る。A stripper plate 43 is provided between the fixed mold 31 and the movable mold 32, and a tubular stripper 44 is attached to the stripper plate 43.
【００３０】可動型３２は上記ストリッパ４４に挿通可
能の分離用ポンチ４５を有する。分離用ポンチ４５は固
定型３１のダイ３７と同軸上に配置されている。分離用
ポンチ４５は先端に小径の分離打抜き部４５ａを有し、
この分離打抜き部４５ａの外径は、ダイ３７の打抜き孔
３８の内径と略同径とされている。The movable mold 32 has a separation punch 45 which can be inserted through the stripper 44. The separation punch 45 is arranged coaxially with the die 37 of the fixed die 31. The separation punch 45 has a small-diameter separation punching portion 45a at the tip,
The outer diameter of the separation punching portion 45a is substantially the same as the inner diameter of the punching hole 38 of the die 37.
【００３１】分離用ポンチ４５の軸心上にはポンチ挿入
孔４６が形成され、そのポンチ挿入孔４６内に底打抜き
用の打抜きポンチ４７がスライド自在に挿入されてい
る。打抜きポンチ４７は小径の打抜き部４７ａを先端部
に有し、その打抜き部４７ａの外径は、図１（III ）に
示す第３円筒部Ｒ3 の内径と略同径とされている。A punch insertion hole 46 is formed on the axis of the separation punch 45, and a punch punch 47 for bottom punching is slidably inserted into the punch insertion hole 46. The punch 47 has a small-diameter punching portion 47a to the distal end, the outer diameter of the punching portion 47a is an inner diameter substantially the same diameter of the third cylindrical portion R 3 shown in FIG. 1 (III).
【００３２】打抜きポンチ４７は、分離用ポンチ４５と
共に進退動されると共に、分離用ポンチ４５の前進停止
状態において、その分離用ポンチ４５に対して一定スト
ローク進退動されるようになっている。The punches 47 are moved forward and backward together with the separation punches 45, and are moved forward and backward by a fixed stroke with respect to the separation punches 45 when the separation punches 45 are stopped moving forward.
【００３３】また、打抜きポンチ４７は、外周下部に設
けられた段部４８と、ポンチ挿入孔４６の内周に形成さ
れた肩４９の衝合によって分離用ポンチ４５に対する上
昇量が制限され、その制限状態において打抜き部４７ａ
の先端が分離用ポンチ４５の先端と略同レベルに保持さ
れる。Further, the amount of the punch 47 to be lifted relative to the separation punch 45 is limited by the abutment of a step portion 48 provided at the lower part of the outer periphery and a shoulder 49 formed at the inner periphery of the punch insertion hole 46. Punching portion 47a in the restricted state
Is held at substantially the same level as the tip of the separation punch 45.
【００３４】図１（III ）に示される形成用素材Ａ
2 は、図３（Ｉ）に示すように、ダイ３７の打抜き孔３
８内に第２円筒部Ｒ2 の端部が挿入され、第１円筒部Ｒ
1 の端面がダイ３７の端面で支持されるようセットされ
る。Forming material A shown in FIG. 1 (III)
2 is a punched hole 3 of a die 37 as shown in FIG.
End of the second cylindrical portion R 2 is inserted into the 8, the first cylindrical portion R
One end face is set so as to be supported by the end face of the die 37.
【００３５】可動型３２は、形成用素材Ａ2 のセット後
において、固定型３１に向けて移動される。その可動型
３２の移動によって、分離用ポンチ４５の先端の分離打
抜き部４５ａが第１円筒部Ｒ1 内に侵入して第２円筒部
Ｒ2 の端面を軸方向に加圧し、上記分離用ポンチ４５と
ダイ３７によって第１円筒部Ｒ1 と第２円筒部Ｒ2 とが
第１円筒部Ｒ1 の内径面に沿って軸方向に切り離され
る。The movable die 32, after the set of formation materials A 2, is moved toward the fixed die 31. By the movement of the movable die 32, the tip of the separating punched portion 45a is pressed to the end face of the second cylindrical portion R 2 intrudes into the first cylindrical portion R 1 in the axial direction of the separation punch 45, the separating punch 45 a first cylindrical portion by the die 37 R 1 and the second cylindrical portion R 2 is disconnected in the axial direction along the first inner surface of the cylindrical portion R 1.
【００３６】切り離し後の第２円筒部Ｒ2 がスリーブ３
９の先端面で支持されると、打抜きポンチ４７が一定ス
トローク前進し、その打抜きポンチ４７の打抜き部４７
ａによって第３円筒部Ｒ3 の底１が打抜かれる。The second cylindrical portion R 2 after separation is the sleeve 3
9, the punch 47 is advanced by a predetermined stroke, and the punch 47 of the punch 47 is moved forward.
bottom 1 of the third cylindrical portion R 3 is punched by a.
【００３７】図３（II）は、形成用素材Ａ2 の分離打抜
き後の状態を示し、スリーブ３９内に押し出された底１
は、スリーブ３９の背部に設けられたスクラップ排出孔
５０から落下排出される。FIG. 3 (II) shows a state after the separation blanking of the forming material A 2 , and the bottom 1 extruded into the sleeve 39.
Is dropped and discharged from a scrap discharge hole 50 provided on the back of the sleeve 39.
【００３８】分離後の第１円筒部Ｒ1 は、可動型３２の
後退時に、分離用ポンチ４５と共に後退し、ストリッパ
４４に対する当接によってその分離用ポンチ４５から取
り出される。When the movable mold 32 is retracted, the first cylindrical portion R 1 is retracted together with the separation punch 45, and is taken out of the separation punch 45 by contact with the stripper 44.
【００３９】ダイ３７の打抜き孔３８内に残る第２円筒
部Ｒ2 と第３円筒部Ｒ3 の打抜き部品Ａ3 は、スリーブ
３９の前進動によってダイ３７から取り出される。The punched part A 3 of the second cylindrical portion R 2 and the third cylindrical portion R 3 remaining in the punch hole 38 of the die 37 is taken out of the die 37 by the forward movement of the sleeve 39.
【００４０】図１（IV）は、分離・打抜き装置３０から
取り出された第１円筒部Ｒ1 、第２円筒部Ｒ2 と第３円
筒部Ｒ3 から成る打抜き部品Ａ3 および底１を示す。第
１円筒部Ｒ1 は、その後の拡径工程において拡径される
と共に内径面に環状溝が成形されて軸受の外輪素形材と
される。FIG. 1 (IV) shows a punched part A 3 and a bottom 1 comprising a first cylindrical part R 1 , a second cylindrical part R 2 and a third cylindrical part R 3 taken out of the separating / punching device 30. . First cylindrical portion R 1 is an annular groove in the inner surface while being expanded in the subsequent diameter expansion step is an outer ring formed and fabricated material is molded bearings.
【００４１】一方、打抜き部品Ａ3 は、次に図４に示す
第２分離装置６０により第２円筒部Ｒ2 と第３円筒部Ｒ
3 の分離が熱間において行われる。On the other hand, punched parts A 3 is then the second cylindrical portion by the second separator 60 shown in FIG. 4 R 2 and the third cylindrical portion R
The separation of 3 is performed hot.
【００４２】第２分離装置６０は、固定型６１と、その
固定型６１に対して進退自在に設けられた可動型６２と
を有し、両型６１、６２間にはストリッパプレート６３
が定置され、そのストリッパプレート６３に筒状のスト
リッパ６４が取付けられている。The second separation device 60 has a fixed mold 61 and a movable mold 62 provided to be able to move forward and backward with respect to the fixed mold 61. A stripper plate 63 is provided between the two molds 61 and 62.
Is fixed, and a stripper plate 64 having a tubular shape is attached to the stripper plate 63.
【００４３】固定型６１は固定盤６５を有し、その固定
盤６５に支持されたダイホルダ６６のダイ嵌合孔６７に
打抜き用のダイ６８が取付けられている。ダイ６８は、
図１（IV）に示す打抜き部品Ａ3 の第３円筒部Ｒ3 が挿
入される打抜き孔６８ａを有し、この打抜き孔６８ａの
内径は、第３円筒部Ｒ3 の外径と略等しくなっている。The fixed die 61 has a fixed plate 65, and a die 68 for punching is mounted in a die fitting hole 67 of a die holder 66 supported by the fixed plate 65. The die 68
Has a punched hole 68a of the third cylindrical portion R 3 of the punched part A 3 shown in FIG. 1 (IV) is inserted, the inner diameter of the punching holes 68a is substantially equal to the outer diameter of the third cylindrical portion R 3 ing.
【００４４】また、ダイホルダ６６は、ダイ６８を通過
した分離後の第３円筒部Ｒ3 を固定盤６５に設けられた
取出し孔６９に誘導する誘導孔７０が設けられている。The die holder 66 is provided with a guide hole 70 for guiding the separated third cylindrical portion R 3 having passed through the die 68 to a take-out hole 69 provided in the fixed board 65.
【００４５】可動型６２は、分離用ポンチ７１を有す
る。分離用ポンチ７１の先端部には打抜きヘッド７２が
設けられている。この打抜きヘッド７２の外径は、打抜
き部品Ａ3 における第２円筒部Ｒ2 の内径と略同径とさ
れている。The movable mold 62 has a separation punch 71. A punching head 72 is provided at the tip of the separation punch 71. The outer diameter of the punching head 72 is a second cylindrical portion R 2 an inner diameter substantially the same diameter in the punched part A 3.
【００４６】図１（IV）に示す打抜き部品Ａ3 は、図４
（Ｉ）に示すように、第３円筒部Ｒ3 がダイ６８の打抜
き孔６８ａに挿入され、第２円筒部Ｒ2 の端面がダイ６
８の先端面で支持されるようにセットされる。The stamped part A 3 shown in FIG.
As shown in (I), third cylindrical portion R 3 are inserted into the punched hole 68a of the die 68, the end surface of the second cylindrical portion R 2 is die 6
8 is set so as to be supported by the distal end surface.
【００４７】可動型６２は、打抜き部品Ａ3 のセット後
において、固定型６１に向けて移動される。その可動型
６２の移動によって、分離用ポンチ７１の打抜きヘッド
７２が第２円筒部Ｒ2 内に侵入して第３円筒部Ｒ3 を軸
方向に加圧し、その分離用ポンチ７１とダイ６８によっ
て、第２円筒部Ｒ2 と第３円筒部Ｒ3 とが図４（II）に
示すように、第２円筒部Ｒ2 の内径面に沿って軸方向に
分離される。分離後の第３円筒部Ｒ3 は、誘導孔７０か
ら取出し孔６９に移動して外部に取り出される。一方、
第２円筒部Ｒ2 は、分離用ポンチ７１と共に後退し、ス
トリッパ６４に対する当接によって分離用ポンチ７１か
ら取り出される。The movable die 62, after a set of punched parts A 3, is moved toward the fixed die 61. By the movement of the movable die 62, the punching head 72 pressurizes the third cylindrical portion R 3 penetrates into the second cylindrical portion R 2 in the axial direction of the separation punch 71, by the separating punch 71 and the die 68 as shown in the second cylindrical portion R 2 third cylindrical portion R 3 Togazu 4 (II), it is separated axially along the second inner surface of the cylindrical portion R 2. Third cylindrical portion R 3 after separation is extracted out moves to the take-out hole 69 from the guide hole 70. on the other hand,
The second cylindrical portion R 2 is retracted together with the separation punch 71, and is taken out of the separation punch 71 by contact with the stripper 64.
【００４８】図１（Ｖ）は、打抜き部品Ａ3 の分離後の
状態を示し、第２円筒部Ｒ2 はその後の工程において外
径面に環状溝が形成され、軸受の内輪素形材とされる。FIG. 1 (V) shows a state after separation of the stamped part A 3. In the subsequent step, an annular groove is formed in the outer diameter surface of the second cylindrical part R 2 , and the inner ring element of the bearing is formed. Is done.
【００４９】一方、第３円筒部Ｒ3 は、型番の異なる軸
受素形材として使用される。この場合、上記内輪Ｒ
3 は、厚みの略２等分位置が旋削されて、図１（VI）に
示すように外リングＲ4 と内リングＲ5 とに分離され、
外リングＲ4 は拡径されたのち、内径面に対する環状溝
の形成により外輪素形材とされ、一方、内リングＲ5 は
外径面に対する環状溝の形成によって内輪素形材とされ
る。On the other hand, the third cylindrical portion R 3 is used as a bearing material having a different model number. In this case, the inner ring R
3, substantially bisecting position of thickness is turned, is separated into an inner ring R 5 and the outer ring R 4 as shown in FIG. 1 (VI),
After the outer ring R 4 is that an enlarged diameter, is an outer ring formed and fabricated material by formation of the annular groove to the inner diameter surface while the inner ring R 5 is an inner ring formed and fabricated material by formation of the annular groove to the outer diameter surface.
【００５０】実施の形態においては、軸受素形材の形成
用素材Ａ2 として、第１円筒部Ｒ1乃至第３円筒部Ｒ3
を軸方向に段差をもって形成したものを示したが、形成
用素材Ａ2 はこれに限定されるものではない。例えば、
図５に示すように、外径の異なる４本の円筒部Ｒ6 乃至
Ｒ9 を軸方向に段差をもって形成し、最小径の円筒部Ｒ
9 の内側に底２を形成したものであってもよい。In the embodiment, the first cylindrical portion R 1 to the third cylindrical portion R 3 are used as the raw material A 2 for forming the bearing raw material.
The showed those formed with a step in the axial direction, forming material A 2 is not limited thereto. For example,
As shown in FIG. 5, four cylindrical portions R 6 to R 9 having different outer diameters are formed with a step in the axial direction, and the cylindrical portion R having the smallest diameter is formed.
The bottom 2 may be formed inside 9 .
【００５１】上記実施形態における形成用素材において
は、４本の円筒部Ｒ6 乃至Ｒ9 を各円筒部の内径面に沿
って軸方向に切り離すと共に、底２を打抜き、外側２本
の円筒部Ｒ6 およびＲ7 を第１の軸受の外輪素形材およ
び内輪素形材として使用し、内側２本の円筒部Ｒ8 およ
びＲ9 を、第１の軸受と型式の異なる軸受の外輪素形材
および内輪素形材として使用する。In the forming material in the above embodiment, the four cylindrical portions R 6 to R 9 are cut off in the axial direction along the inner diameter surface of each cylindrical portion, the bottom 2 is punched, and the two outer cylindrical portions are formed. R 6 and R 7 is used as the first bearing outer ring formed and fabricated material and an inner ring formed and fabricated material, the cylindrical portion R 8 and R 9 of the inner two, outer ring of the first different bearings of the bearing and model preformed Used as material and inner ring material.
【００５２】[0052]
【発明の効果】以上のように、この発明においては、外
径の異なる３本以上の円筒部を軸方向に段差をもって一
体化し、最小径の円筒部内に底を設けたことにより、抜
きかすとして処理される底の外径を小さくすることがで
き、各円筒部を軸方向に切り離す軸受素形材の形成にお
いて材料のロスをきわめて少なくすることができる。As described above, according to the present invention, three or more cylindrical portions having different outer diameters are integrated with a step in the axial direction, and the bottom is provided in the cylindrical portion having the minimum diameter, so that the dust is removed. The outer diameter of the bottom to be treated can be reduced and material losses can be minimized in the formation of the bearing blank which separates each cylindrical part in the axial direction.
【図１】（Ｉ）乃至（VI）は、この発明に係る軸受素形
材の製造方法によって成形される成形品を段階的に示す
フロー図FIGS. 1 (I) to (VI) are flow charts showing step-by-step a molded product formed by a method for manufacturing a bearing element according to the present invention.
【図２】（Ｉ）は成形装置の断面図、（II）は成形状態
を示す断面図FIG. 2 (I) is a cross-sectional view of a molding apparatus, and (II) is a cross-sectional view showing a molding state.
【図３】（Ｉ）は分離・打抜き装置の断面図、（II）は
その作動状態を示す断面図FIG. 3 (I) is a cross-sectional view of the separation / punching device, and (II) is a cross-sectional view showing an operation state thereof.
【図４】（Ｉ）は第２分離装置の断面図、（II）はその
作動状態を示す断面図FIG. 4 (I) is a cross-sectional view of a second separation device, and (II) is a cross-sectional view showing an operation state thereof.
【図５】同上形成用素材の他の例を示す斜視図FIG. 5 is a perspective view showing another example of the same forming material.
【図６】従来の軸受素形材の製造方法によって成形され
る成形品を段階的に示すフロー図FIG. 6 is a flowchart showing stepwise a molded product formed by a conventional method for producing a bearing raw material.
【図７】玉軸受の断面図FIG. 7 is a sectional view of a ball bearing.
Ａ2 形成用素材 Ｒ1 乃至Ｒ3 円筒部 １ 底A 2 forming material R 1 to R 3 cylindrical portion 1 the bottom
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3J101 BA70 DA09 EA02 EA03 EA04 FA44 4E087 BA17 CA11 CA14 CA15 CA33 CB01 DA05 DB04 DB05 DB24 EC12 EC14 EC22 EC37 EC46 HA41 HA43 HB02 HB08 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 3J101 BA70 DA09 EA02 EA03 EA04 FA44 4E087 BA17 CA11 CA14 CA15 CA33 CB01 DA05 DB04 DB05 DB24 EC12 EC14 EC22 EC37 EC46 HA41 HA43 HB02 HB08
Claims (2)
素形材となる３本以上の円筒部が軸方向に段差をもって
一体化され、最小径の円筒部内に底が形成された軸受素
形材の形成用素材を型鍛造により成形する工程と、 上記形成用素材の各円筒部を内径面に沿って軸方向に切
り離すと共に、最小径の円筒部の底を打抜く工程、 とから成る軸受素形材の形成方法。1. A bearing element in which three or more cylindrical parts each having a different outer diameter and each serving as a bearing ring element are integrated with a step in the axial direction, and a bottom is formed in a cylindrical part having a minimum diameter. Forming a material for forming a shape by die forging, and cutting off each cylindrical portion of the material for forming in the axial direction along the inner diameter surface and punching a bottom of the cylindrical portion having the smallest diameter. A method of forming a bearing element.
素形材となる３本以上の円筒部を有し、その円筒部のそ
れぞれが軸方向に段差をもって形成されて一体化され、
最小径の円筒部内に底が形成された軸受素形材の形成用
素材。2. It has three or more cylindrical portions each having a different outer diameter and each serving as a bearing ring element, and each of the cylindrical portions is formed integrally with a step in the axial direction,
A material for forming a bearing element with a bottom formed in a cylindrical part with the smallest diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34891098A JP3856578B2 (en) | 1998-12-08 | 1998-12-08 | Method of forming bearing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34891098A JP3856578B2 (en) | 1998-12-08 | 1998-12-08 | Method of forming bearing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000167641A true JP2000167641A (en) | 2000-06-20 |
| JP3856578B2 JP3856578B2 (en) | 2006-12-13 |
Family
ID=18400216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34891098A Expired - Fee Related JP3856578B2 (en) | 1998-12-08 | 1998-12-08 | Method of forming bearing element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3856578B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1314901A1 (en) * | 2001-11-20 | 2003-05-28 | Minebea Kabushiki Kaisha | Method for manufacturing outer ring and inner ring of bearing |
| JP2007170586A (en) * | 2005-12-26 | 2007-07-05 | Nsk Ltd | Manufacturing method for bearing ring for rolling bearing |
| CN100398859C (en) * | 2002-02-21 | 2008-07-02 | 美蓓亚株式会社 | Technology for mfg. small ball-bearing |
| KR200458880Y1 (en) * | 2009-09-30 | 2012-03-15 | (주)용암금속 | Forging shape for the lower part spline of one way clutch inner race in 6-speed automatic transmission |
| US8197949B2 (en) * | 2006-10-03 | 2012-06-12 | Seiko Instruments Inc. | Blank for a ring member of a bearing, manufacturing method for the same, manufacturing method for a ring member of a bearing, and bearing |
| WO2015122186A1 (en) * | 2014-02-14 | 2015-08-20 | 日本精工株式会社 | Method for manufacturing annular member |
| CN112536407A (en) * | 2020-11-20 | 2021-03-23 | 遵义航天新力精密铸锻有限公司 | Forging process for bearing ring of aircraft engine |
| JP2022126567A (en) * | 2021-02-18 | 2022-08-30 | 株式会社阪村ホットアート | Method for manufacturing inner/outer rings and separate ring body by hot former |
-
1998
- 1998-12-08 JP JP34891098A patent/JP3856578B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1314901A1 (en) * | 2001-11-20 | 2003-05-28 | Minebea Kabushiki Kaisha | Method for manufacturing outer ring and inner ring of bearing |
| CN100398859C (en) * | 2002-02-21 | 2008-07-02 | 美蓓亚株式会社 | Technology for mfg. small ball-bearing |
| JP2007170586A (en) * | 2005-12-26 | 2007-07-05 | Nsk Ltd | Manufacturing method for bearing ring for rolling bearing |
| US8197949B2 (en) * | 2006-10-03 | 2012-06-12 | Seiko Instruments Inc. | Blank for a ring member of a bearing, manufacturing method for the same, manufacturing method for a ring member of a bearing, and bearing |
| KR200458880Y1 (en) * | 2009-09-30 | 2012-03-15 | (주)용암금속 | Forging shape for the lower part spline of one way clutch inner race in 6-speed automatic transmission |
| CN105992660A (en) * | 2014-02-14 | 2016-10-05 | 日本精工株式会社 | Method for manufacturing annular member |
| WO2015122186A1 (en) * | 2014-02-14 | 2015-08-20 | 日本精工株式会社 | Method for manufacturing annular member |
| JPWO2015122186A1 (en) * | 2014-02-14 | 2017-03-30 | 日本精工株式会社 | Manufacturing method of annular member |
| EP3106244A4 (en) * | 2014-02-14 | 2017-04-26 | NSK Ltd. | Method for manufacturing annular member |
| US20170173658A1 (en) * | 2014-02-14 | 2017-06-22 | Nsk Ltd. | Method for Manufacturing Ring-Shaped Member |
| US10272485B2 (en) | 2014-02-14 | 2019-04-30 | Nsk Ltd. | Method for manufacturing ring-shaped member |
| CN112536407A (en) * | 2020-11-20 | 2021-03-23 | 遵义航天新力精密铸锻有限公司 | Forging process for bearing ring of aircraft engine |
| JP2022126567A (en) * | 2021-02-18 | 2022-08-30 | 株式会社阪村ホットアート | Method for manufacturing inner/outer rings and separate ring body by hot former |
| JP7395126B2 (en) | 2021-02-18 | 2023-12-11 | 株式会社阪村ホットアート | Method for manufacturing inner and outer rings and separate rings using a hot former |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3856578B2 (en) | 2006-12-13 |
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