JPH05245571A - Ring body forming device - Google Patents

Ring body forming device

Info

Publication number
JPH05245571A
JPH05245571A JP27167291A JP27167291A JPH05245571A JP H05245571 A JPH05245571 A JP H05245571A JP 27167291 A JP27167291 A JP 27167291A JP 27167291 A JP27167291 A JP 27167291A JP H05245571 A JPH05245571 A JP H05245571A
Authority
JP
Japan
Prior art keywords
mandrel
forming
roller
support roller
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP27167291A
Other languages
Japanese (ja)
Other versions
JPH0798240B2 (en
Inventor
Kazuo Kadotani
和男 門谷
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.)
Kyoei Steel Ltd
Original Assignee
Kyoei Steel 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 Kyoei Steel Ltd filed Critical Kyoei Steel Ltd
Priority to JP3271672A priority Critical patent/JPH0798240B2/en
Publication of JPH05245571A publication Critical patent/JPH05245571A/en
Publication of JPH0798240B2 publication Critical patent/JPH0798240B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To stably support a mandrel and improve the forming precision of a work by forming a contact surface of a support roller at the corresponding position across the respective regulating surfaces of the mandrel relative to the respective regulating surfaces of a forming roller. CONSTITUTION:A forming roller 4 where a ring body forming part 4a is formed on the center circumferential surface while regulating surfaces 4b, 4b are formed on both circumferential surfaces, a mandrel 5 which is provided opposite to the forming roller 4 in a relatively attachable/detachable manner and where a ring body forming part 5a is formed on the center circumferential surface while regulating surfaces 5b, 5b are formed on both circumferential surfaces, and a support roller 13 which is provided opposite to the rear side of the mandrel 5 and where the contact surfaces 13a, 13a which are oppositely contact with the regulating surfaces 5b, 5b of the mandrel 5 are separately formed at the corresponding position of the regulating surface 4b, 4b of the forming roller 4 are arranged, and this arrangement prevents the mandrel 5 from being minutely inclined and improves the forming accuracy of the work 14.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は、ベアリングのインナレース、アウタレー
ス、ピロー等の輪体あるいはケージ、スリーブ等の輪体
(ワーク)を所定形状に冷間圧延加工して成形する輪体
成形装置に関する。 (ロ)従来の技術 従来、上述例の輪体成形装置としては、例えば、次の如
き構成の装置がある。すなわち、成形ローラと、マンド
レルと、サポートローラとの3つの回転要素を平面上に
平行に配設して、回転可能に軸支し、上述の成形ローラ
と、サポートローラとのそれぞれに回転力を伝導したベ
アリングの輪体成形装置である。しかし、上述の従来装
置において上記サポートローラによるマンドレルに対す
る良好なバックアップ力が得られない場合には、ワーク
成形時に上述のマンドレルが成形ローラの押圧力により
微小傾動して、良好なワークの成形精度が得られない問
題点があった。 (ハ)発明の目的 この発明は、サポートローラの形状を特異に設定するこ
とにより、該サポートローラによるマンドレルの支持を
均一かつ安定化させて、マンドレルの微小傾動を防止
し、ワークの成形精度の向上を図ると共に、上述のサポ
ートローラによるマンドレルのバックアップ力により、
同マンドレルの強度が確保でき、このマンドレルの耐久
性の向上を図ることができる輪体成形装置の提供を目的
とする。 (ニ)発明の構成 この発明は中央周面に輪体成形部を、両側周面に規制面
をそれぞれ形成した成形ローラと、この成形ローラと相
対接離可能に対向され、中央周面に輪体成形部を、両側
周面に規制面をそれぞれ形成したマンドレルと、このマ
ンドレルの背面側に対設され、上記マンドレルのそれぞ
れの規制面と対接する2つの摺接面をサポートローラ軸
における成形ローラの規制面対応位置に離間形成したサ
ポートローラとの3つの回転要素を平面上に平行に配設
して、回転可能に軸支した輪体成形装置であることを特
徴とする。 (ホ)発明の効果 この発明によれば、上述の成形ローラの各規制面に対し
てマンドレルのそれぞれの規制面を隔てて対応する位置
において、上述のサポートローラ軸に規制面を形成した
ので、このサポートローラによる上述の2つの規制面で
マンドレルを均一に、しかも安定して支持することがで
き、この結果、成形押圧時におけるマンドレルの微小傾
動を防止し、ワークの成形精度の向上を図ることができ
る効果がある。加えて、上述のサポートローラによりマ
ンドレルのバックアップ力を得るので、同マンドレルの
強度が確保できて、このマンドレルの耐久性の向上を図
ることができる効果がある。 (ヘ)発明の実施例 この発明の一実施例を以下図面に基づいて詳述する。 (第1実施例)図面は輪体成形装置を示し、成形用の押
圧シリンダ1のピストンロッド2先端にコ字状の可動枠
3を取付け、この可動枠3には成形ローラ4を可回動に
配設している。上述の成形ローラ4は中央周面に輪体成
形部4aを、また両側周面に規制面4b,4bをそれぞ
れ有する。上述のピストンロッド2の往復動方向(矢印
a方向)と直交する方向(矢印b方向)に可動して、上
述の成形ローラ4と相対接離するマンドレル5を設けて
いる。このマンドレル5は成形ローラ4の輪体成形部4
aと対応して、その中央周面に輪体成形部5aを形成す
ると共に、両側周面に規制面5b,5bを形成したもの
で、このマンドレル5の一端軸部5cをメタル6を介し
て摺動ブロック7に可回動に取付け、この摺動ブロック
7にはマンドレル移動シリンダ8のピストンロッド9を
連結している。また上述のマンドレル5における一端軸
部5cの端面をボルト10により背面板11に固定し、
上述のボルト10を取外すことで、マンドレル5の交換
が可能となる。一方、コ字状の固定枠12にはサポート
ローラ13を可回動に配設している。このサポートロー
ラ13はそのサポートローラ軸13bにおける前述の成
形ローラ4の2つの規制面4b,4bと対応する位置に
2つの摺接面13a,13aを離間形成し、マンドレル
5の背面側において上述の摺接面13a,13aを同マ
ンドレル5の2つの規制面5b,5bと対接している。
そして、前述の成形ローラ4の輪体成形部4aと、マン
ドレル5の輪体成形部5aとの間でリング状の加工輪体
としてのワーク14が冷間圧延加工される。また、上述
の成形ローラ4、マンドレル5、サポートローラ13の
3つの回転要素は第2図に示す如く平面上に平行に配設
して、回転可能に軸支している。ところで、上述の成形
ローラ4には、両端にボール自在継手15,15を備え
たテレスコープシャフトとしての連結軸16を連結し、
この連結軸16の一端をスプロケット軸17に連動させ
ると共に、このスプロケット軸17には入力スプロケッ
ト18を嵌合している。また上述の成形ローラ4を独立
駆動する第1の駆動源としての第1モータ19を設け、
この第1モータ19の回転軸20に出力スプロケット2
1を嵌合すると共に、この出力スプロケット21と前述
の入力スプロケット18との間にはチェーン22を張架
して、第1モータ19の回転力を各要素20,21,2
2,18,17,16を介して成形ローラ4に独立伝達
すべく構成している。一方、前述のサポートローラ13
には、両端にボール自在継手23,23を備えた連結軸
24を連結し、この連結軸24の一端をプーリ軸25に
連動させると共に、このプーリ軸25には入力プーリ2
6を嵌合している。また上述のサポートローラ13を独
立駆動する第2の駆動源としての第2モータ27を設
け、この第2モータ27の回転軸28に出力軸プーリ2
9を嵌合すると共に、この出力プーリ29と前述の入力
プーリ26との間にはVベルト30を張架して、第2モ
ータ27の回転力を各要素28,29,30,26,2
5,24を介してサポートローラ13に独立伝達すべく
構成している。さらに前述のワーク14における圧延に
よって径が大きくなる側の外周面には接触式センサ31
の触子を当接し、この接触式センサ31からの入力に基
づいてCPU40はROM32に格納したプログラムに
従って押圧シリンダ1、第1モータ19、マンドレル移
動シリンダ8、インバータ33(一定の周波数を有した
電源から任意の周波数の電源を作り出し、これによって
モータの回転数を自由に変えることができる装置で、詳
しくは周波数変換装置frequency chang
erという)を駆動制御し、RAM34は後述する必要
なデータを記憶する。なお、上述の接触式センサ31の
基部にはポテンショメータ等を用いることができる。い
ま、第2図に示すように成形ローラ4の回転数をN
サポートローラ13の回転数をNとするとき、両者の
間には次式が成立する。 ここに、Dは成形ローラ輪体成形部4aの径、D
サポートローラ摺接面13aの径、Dはマンドレル輪
体成形部5aの径、Dはマンドレル規制面5bの径、
はワーク内径、Dはワーク外径。そして、前述の
RAM34は上述のN、D、D、D、Dに相
当する各種データを記憶する。図示実施例は上記の如く
構成するものにして、以下作用を説明する。図示しない
ワーク供給装置より成形ローラ4とサポートローラ13
との間にワーク14が供給されると、CPU40により
マンドル移動シリンダ8が待機位置から第1図の成形位
置に前進して、マンドレル5はワーク14の孔部を挿通
して、輪体成形部5aがワーク14を介して成形ローラ
4の輪体成形部4aと対向する位置まで送り出される。
次にCPU40は第1モータ19を駆動して成形ローラ
4を回転させると共に、インバータ33を介して第2モ
ータ27を駆動して、サポートローラ13およびマンド
レル5を駆動制御する。次にCPU40は押圧シリンダ
1を前進駆動し、ピストンロッド2を介して成形ローラ
4をサポートローラ13側に移動する。この移動で成形
ローラ4の輪体成形部4aはワーク14の外周面に接し
てワーク14は回転される。さらに成形ローラ4が押圧
されると、ワーク14は成形ローラ4の輪体成形部4a
とマンドレル5の輪体成形部5aとによって回転しなが
ら圧延が行なわれ、ワーク14は第3図に示す如く所定
寸法に圧延される。ところで、上述の圧延初期から圧延
完了にかけてD/Dが次第に大となり、D/D
が1に近づくが、CPU40は接触式センサ31からの
ワーク計測信号に基づいてインバータ33を制御し、第
2モータ27の回転数Nに対応して可変制御するので、サポートローラ13の回
転数Nはワーク14の径変化に応じて成形ローラ4側
の回転数Nと対応して変化しながら、ワーク14には
各要素4,5の双方から回転トルクが与えられるので、
ワーク14が従来例で述べたようにローラの接線方向に
延びるのを防止して真円度の高い高精度のワーク成形を
行なうことができる効果がある。また、第1モータ19
により成形ローラ4を、また第2モータ27によりサポ
ートローラ13をそれぞれ独立駆動させるので、ワーク
14には上述の成形ローラ4側からと、サポートローラ
13により駆動されるマンドレル5側からの双方から回
転トルクが与えられるので、マンドレル5、サポートロ
ーラ13間のスリップがなくなり、マンドレル5の耐久
性の向上を図ることができる効果がある。さらに、圧延
の繰返しにより成形ローラ4等が摩耗した際や或は異径
成形ローラによる異径ワークの成形に際しても、上述の
成形ローラ4とサポートローラ13との回転数N,N
は互に対応変化するので、例えばインバータ33によ
る周波数を予めマニュアル設定することで、充分な成形
精度を得ることができる効果がある。しかも、上述の成
形ローラ4の各規制面4b,4bに対してマンドレル5
のそれぞれの規制面5b,5bを隔てて対応する位置に
おいて、上述のサポートローラ軸13bに規制面13
a,13aを形成したので、このサポートローラ13に
よる上述の2つの規制面13a,13aでマンドレル5
を均一に、しかも安定して支持することができ、この結
果、成形押圧時におけるマンドレル5の微小傾動を防止
し、ワーク14の成形精度の向上を図ることができる効
果がある。加えて、上述のサポートローラ13によりマ
ンドレル5のバックアップ力を得るので、同マンドレル
5の強度が確保できて、このマンドレル5の耐久性の向
上を図ることができる効果がある。上述のインバータ3
3は電源周波数(50もしくは60Hz)を30〜18
0Hzまで無段階に可変できるので、電源とACモータ
との間に上述のインバータ33を介設するだけで、複雑
なモータ回転数制御たとえば変速歯車やモータ電極数の
切換え等を何等必要とすることなく、簡単に回転数制御
を行なうことができる。なお、上記実施例においてはベ
アリングのアウタレースを成形する場合について述べた
が、ベアリングのインナレースやピローあるいは自動車
部品等のケージ、スリーブその他に対応するマンドレル
および成形ローラを用いることで単一の装置により、こ
れら多様の輪体を成形することができるのは勿論であ
る。 (第2実施例)上述の第1実施例における接触式センサ
31、CPU40等を省略する一方、前述の第2モータ
27の回転数を予め成形完了時のサポートローラ13の
高回転数Nに設定し、成形初期において前述のVベル
ト30を滑べらせてサポートローラ13の成形初期の低
回転数Nが得られるように構成し、前述の第2モータ
27を常時一定回転数により駆動すべく構成し、上述の
サポートローラ13の回転数をVベルト30の滑べりに
より段階制御してもよい。このように構成した場合に
は、構造の簡略化を図ることができるうえ、第1実施例
とほぼ同様の効果を得ることができる。また、Vベルト
30の滑べりにより第2モータ27に過電流が流れるの
を防止することができる。 (第3実施例)第4図はさらに他の実施例を示し、サポ
ートローラ13と連動する連結軸24に排油量可変形の
油圧モータ35の出力軸36を連動させ、CPU40の
出力で同油圧モータ35に内蔵した斜軸や斜板等の回転
数可変制御要素をコントロールし、トルクに相当する圧
力Pを一定として、回転数に相当する流量Qのみを可変
制御する。このように第2の駆動源として油圧モータ3
5を用いると、小形軽量で所定の回転トルクを得ること
ができ、また前述の各シリンダ1,8と共通の油圧源の
使用ができるうえ、リリーフ弁を付加するだけで簡単に
機械的損傷防止機能を与えることができる効果がある。
このように構成しても、先の第1実施例とほぼ同様の作
用・効果を奏するので、第4図において、第1図と同一
の部分には同一番号および同一符号を付してその詳しい
説明を省略する。以上要するに上述の何れの実施例にお
いても、上述の成形ローラ4の各規制面4b,4bに対
してマンドレル5のそれぞれの規制面5b,5bを隔て
て対応する位置において、上述のサポートローラ軸13
bに規制面13a,13aを形成したので、このサポー
トローラ13による上述の2つの規制面13a,13a
でマンドレル5を均一に、しかも安定して支持すること
ができ、この結果、成形押圧時におけるマンドレル5の
微小傾動を防止し、ワーク14の成形精度の向上を図る
ことができる効果がある。加えて、上述のサポートロー
ラ13によりマンドレル5のバックアップ力を得るの
で、同マンドレル5の強度が確保できて、このマンドレ
ル5の耐久性の向上を図ることができる効果がある。な
お、上記構成の輪体成形装置により鍛造された輪体の偏
肉をとってもよく、プレス加工された輪体の径の拡大に
用いてもよいことは勿論である。さらに、上述の各作業
時には、マンドレル5の両端を回転支持することは云う
までもない。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a cold rolling process of a ring such as an inner race, an outer race or a pillow of a bearing or a ring (work) such as a cage or a sleeve into a predetermined shape. The present invention relates to a ring molding device for molding. (B) Conventional Technology Conventionally, as the ring forming apparatus of the above-mentioned example, there is, for example, an apparatus having the following configuration. That is, three rotating elements, that is, a forming roller, a mandrel, and a support roller are arranged in parallel on a plane and rotatably supported, and a rotational force is applied to each of the forming roller and the support roller. This is a ring forming device for a bearing that has been conducted. However, in the above-mentioned conventional device, when a good backup force for the mandrel by the support roller cannot be obtained, the mandrel described above slightly tilts due to the pressing force of the forming roller during the forming of the work, and a good forming accuracy of the work is obtained. There was a problem that I could not get. (C) Object of the Invention The present invention sets the shape of the support roller uniquely to uniformly and stably support the mandrel by the support roller, prevent minute tilting of the mandrel, and improve the forming accuracy of the work. As well as improving, due to the backup power of the mandrel by the above support roller,
An object of the present invention is to provide a ring forming device capable of ensuring the strength of the mandrel and improving the durability of the mandrel. (D) Structure of the Invention The present invention relates to a molding roller having a ring molding portion formed on the central peripheral surface and restriction surfaces on both side peripheral surfaces, and a molding roller which is opposed to the molding roller so as to be relatively contactable to and separable from the molding roller. The body forming part has a mandrel formed with restricting surfaces on both sides, and two sliding contact surfaces that are provided to face the rear side of the mandrel and contact the restricting surfaces of the mandrel. Is a ring forming device in which three rotating elements, which are spaced apart from each other at a position corresponding to the restriction surface, are arranged in parallel on a plane and are rotatably supported. (E) Effect of the Invention According to the present invention, since the restriction surface is formed on the support roller shaft at a position corresponding to each restriction surface of the forming roller by separating each restriction surface of the mandrel. The mandrel can be uniformly and stably supported by the above-mentioned two restricting surfaces by the support roller, and as a result, the mandrel can be prevented from being slightly tilted at the time of press for forming, and the forming accuracy of the work can be improved. There is an effect that can be. In addition, since the above-mentioned support roller provides a backup force for the mandrel, the strength of the mandrel can be secured, and the durability of the mandrel can be improved. (F) Embodiment of the Invention One embodiment of the present invention will be described in detail below with reference to the drawings. (First Embodiment) The drawings show a ring forming apparatus, in which a U-shaped movable frame 3 is attached to the tip of a piston rod 2 of a pressing cylinder 1 for forming, and a forming roller 4 is rotatably attached to the movable frame 3. It is installed in. The molding roller 4 described above has a ring molding portion 4a on its central peripheral surface and restricting surfaces 4b, 4b on both peripheral surfaces. A mandrel 5 is provided which is movable in a direction (arrow b direction) orthogonal to the reciprocating direction of the piston rod 2 (arrow a direction) and is brought into contact with and separated from the forming roller 4 described above. The mandrel 5 is a ring forming part 4 of the forming roller 4.
Corresponding to a, a ring molding portion 5a is formed on the central peripheral surface thereof, and restriction surfaces 5b, 5b are formed on both peripheral surfaces thereof. One end shaft portion 5c of this mandrel 5 is provided with a metal 6 interposed therebetween. The sliding block 7 is rotatably mounted, and a piston rod 9 of a mandrel moving cylinder 8 is connected to the sliding block 7. Further, the end surface of the one-end shaft portion 5c of the above-mentioned mandrel 5 is fixed to the back plate 11 by the bolt 10.
By removing the bolt 10 described above, the mandrel 5 can be replaced. On the other hand, a support roller 13 is rotatably arranged on the U-shaped fixed frame 12. The support roller 13 has two sliding contact surfaces 13a and 13a formed on the support roller shaft 13b at positions corresponding to the two restriction surfaces 4b and 4b of the forming roller 4 described above. The sliding contact surfaces 13a, 13a are in contact with the two restriction surfaces 5b, 5b of the mandrel 5.
Then, the work 14 as a ring-shaped working ring is cold-rolled between the ring forming part 4a of the forming roller 4 and the ring forming part 5a of the mandrel 5 described above. Further, the three rotating elements of the forming roller 4, the mandrel 5, and the support roller 13 are arranged in parallel on a plane as shown in FIG. 2 and are rotatably supported. By the way, a connecting shaft 16 as a telescope shaft having ball universal joints 15 and 15 at both ends is connected to the forming roller 4 described above,
An end of the connecting shaft 16 is interlocked with a sprocket shaft 17, and an input sprocket 18 is fitted to the sprocket shaft 17. Further, a first motor 19 as a first drive source for independently driving the forming roller 4 is provided,
The output sprocket 2 is attached to the rotary shaft 20 of the first motor 19.
1 is fitted, and a chain 22 is stretched between the output sprocket 21 and the above-mentioned input sprocket 18 to apply the rotational force of the first motor 19 to each of the elements 20, 21, and 2.
It is configured to be independently transmitted to the forming roller 4 via 2, 18, 17, and 16. On the other hand, the support roller 13 described above
Is connected with a connecting shaft 24 having ball universal joints 23, 23 at both ends, one end of the connecting shaft 24 is interlocked with a pulley shaft 25, and the pulley shaft 25 has an input pulley 2
6 is fitted. Further, a second motor 27 as a second drive source for independently driving the support roller 13 is provided, and the output shaft pulley 2 is attached to the rotation shaft 28 of the second motor 27.
9 is fitted and a V-belt 30 is stretched between the output pulley 29 and the above-mentioned input pulley 26 so that the rotational force of the second motor 27 is applied to each element 28, 29, 30, 26, 2.
It is configured to be independently transmitted to the support roller 13 via 5, 24. Further, the contact type sensor 31 is provided on the outer peripheral surface of the work 14 on the side where the diameter is increased by rolling.
Of the contact type sensor 31, and the CPU 40 based on the input from the contact type sensor 31 according to the program stored in the ROM 32, the pressing cylinder 1, the first motor 19, the mandrel moving cylinder 8, the inverter 33 (the power source having a constant frequency). It is a device that can generate a power source of any frequency from the above, and freely change the number of rotations of the motor by using it. For details, refer to the frequency conversion device frequency
(referred to as er), and the RAM 34 stores necessary data described later. Note that a potentiometer or the like can be used for the base of the above-mentioned contact type sensor 31. Now, as shown in FIG. 2, the rotation number of the forming roller 4 is N 1 ,
When the number of rotations of the support roller 13 is N 2 , the following equation holds between them. Here, D 1 is the diameter of the molding roller wheel molding portion 4a, D 2 is the diameter of the support roller sliding contact surface 13a, D 3 is the diameter of the mandrel wheel molding portion 5a, and D 4 is the diameter of the mandrel regulation surface 5b.
D i is the inner diameter of the work, D 0 is the outer diameter of the work. The RAM 34 described above stores various data corresponding to N 1 , D 1 , D 2 , D 3 , and D 4 described above. The illustrated embodiment is configured as described above, and the operation will be described below. Forming roller 4 and support roller 13 from a work supply device (not shown)
When the work 14 is supplied to the mandrel 5, the CPU 40 advances the mandrel moving cylinder 8 from the standby position to the forming position of FIG. 1, and the mandrel 5 is inserted through the hole of the work 14 to form the ring forming part. 5a is sent out through the work 14 to a position facing the ring forming portion 4a of the forming roller 4.
Next, the CPU 40 drives the first motor 19 to rotate the forming roller 4, and drives the second motor 27 via the inverter 33 to drive-control the support roller 13 and the mandrel 5. Next, the CPU 40 drives the pressing cylinder 1 forward, and moves the forming roller 4 to the support roller 13 side via the piston rod 2. By this movement, the ring forming portion 4a of the forming roller 4 contacts the outer peripheral surface of the work 14, and the work 14 is rotated. When the forming roller 4 is further pressed, the work 14 is moved to the ring forming portion 4a of the forming roller 4.
Rolling is performed by rotating the mandrel 5 and the ring forming portion 5a of the mandrel 5, and the work 14 is rolled to a predetermined size as shown in FIG. By the way, D i / D 0 gradually increases from the above-described initial rolling to completion of rolling, and D i / D 0
Becomes closer to 1, the CPU 40 controls the inverter 33 based on the work measurement signal from the contact sensor 31 to change the rotation speed N 2 of the second motor 27. Since the rotational speed N 2 of the support roller 13 changes corresponding to the rotational speed N 1 of the forming roller 4 side in accordance with the diameter change of the work 14, the work 14 has each element 4 changed. Since rotational torque is given from both
As described in the conventional example, there is an effect that the work 14 is prevented from extending in the tangential direction of the roller and highly accurate work forming with high roundness can be performed. In addition, the first motor 19
Since the forming roller 4 and the support roller 13 are independently driven by the second motor 27, the work 14 rotates from both the forming roller 4 side and the mandrel 5 side driven by the support roller 13. Since the torque is applied, slippage between the mandrel 5 and the support roller 13 is eliminated, and the durability of the mandrel 5 can be improved. Further, even when the forming roller 4 or the like wears due to repeated rolling, or when forming a different-diameter workpiece with a different-diameter forming roller, the rotation speeds N 1 , N of the forming roller 4 and the support roller 13 described above.
Since 2 changes correspondingly to each other, it is possible to obtain sufficient molding accuracy by manually setting the frequency by the inverter 33 in advance. Moreover, the mandrel 5 is attached to each of the regulating surfaces 4b, 4b of the forming roller 4 described above.
Of the support roller shaft 13b at a position corresponding to each of the restriction surfaces 5b and 5b separated from each other.
Since the a and 13a are formed, the mandrel 5 is formed by the above-mentioned two restricting surfaces 13a and 13a by the support roller 13.
Can be supported uniformly and stably. As a result, there is an effect that the mandrel 5 can be prevented from being slightly tilted at the time of forming and pressing, and the forming accuracy of the work 14 can be improved. In addition, since the backup force of the mandrel 5 is obtained by the support roller 13 described above, the strength of the mandrel 5 can be ensured and the durability of the mandrel 5 can be improved. Inverter 3 mentioned above
3 is the power supply frequency (50 or 60 Hz) 30-18
Since it can be continuously changed up to 0 Hz, complicated motor rotation speed control, such as switching of gears and the number of motor electrodes, is required only by providing the above-mentioned inverter 33 between the power supply and the AC motor. Without, it is possible to easily control the rotation speed. In the above embodiment, the case where the outer race of the bearing is molded has been described, but by using a mandrel and a molding roller corresponding to the inner race of the bearing, the pillow, the cage of the automobile part or the like, the sleeve and the like, a single device is used. Of course, it is possible to form these various rings. (Second Embodiment) While omitting the contact sensor 31, the CPU 40, etc. in the first embodiment, the rotation speed of the second motor 27 is set to the high rotation speed N 2 of the support roller 13 at the completion of molding in advance. The V-belt 30 is slid in the initial stage of molding to obtain the low rotational speed N 2 of the support roller 13 in the initial stage of molding, and the second motor 27 is constantly driven at a constant rotational speed. Thus, the rotation speed of the support roller 13 may be controlled in stages by the V-belt 30 sliding. With this structure, the structure can be simplified and the same effect as that of the first embodiment can be obtained. Further, it is possible to prevent the overcurrent from flowing to the second motor 27 due to the slipping of the V-belt 30. (Third Embodiment) FIG. 4 shows still another embodiment, in which the output shaft 36 of a hydraulic motor 35 of variable oil discharge amount is interlocked with the connecting shaft 24 interlocking with the support roller 13, and the output of the CPU 40 is the same. The rotational speed variable control elements such as the swash shaft and the swash plate built in the hydraulic motor 35 are controlled to keep the pressure P corresponding to the torque constant and variably control only the flow rate Q corresponding to the rotational speed. Thus, the hydraulic motor 3 is used as the second drive source.
If 5 is used, it is possible to obtain a predetermined rotation torque with a small size and light weight, and to use a hydraulic source common to the cylinders 1 and 8 described above, and to prevent mechanical damage simply by adding a relief valve. It has the effect of giving a function.
Even with such a configuration, the same operation and effect as those of the first embodiment can be obtained. Therefore, in FIG. 4, the same parts as those in FIG. The description is omitted. In short, in any of the above-described embodiments, the support roller shaft 13 described above is provided at a position corresponding to the restriction surfaces 4b and 4b of the molding roller 4 with the restriction surfaces 5b and 5b of the mandrel 5 separated from each other.
Since the regulation surfaces 13a, 13a are formed on the b side, the above-mentioned two regulation surfaces 13a, 13a by the support roller 13 are formed.
Thus, the mandrel 5 can be uniformly and stably supported, and as a result, the mandrel 5 can be prevented from being slightly tilted at the time of forming and pressing, and the forming accuracy of the work 14 can be improved. In addition, since the backup force of the mandrel 5 is obtained by the support roller 13 described above, the strength of the mandrel 5 can be ensured and the durability of the mandrel 5 can be improved. In addition, it is needless to say that the ring body forged by the ring forming apparatus having the above-described structure may have an uneven thickness and may be used for increasing the diameter of the pressed ring body. Furthermore, it goes without saying that both ends of the mandrel 5 are rotatably supported during the above-mentioned respective operations.

【図面の簡単な説明】 図面はこの発明の一実施例を示し、第1図は輪体成形装
置を示す系統図、第2図は3つの回転要素およびワーク
の各径と回転数との関連を示すための説明図、第3図は
冷間圧延完了時の説明図、第4図は輪体成形装置の他の
実施例を示す系統図である。 4…成形ローラ 4a…輪体成形部 4b…規制面 5…マンドレル 5a…輪体成形部 5b…規制面 13…サポートローラ 13a…摺接面 13b…サポートローラ軸 14…ワーク
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, FIG. 1 is a system diagram showing a ring forming device, and FIG. 2 is a relation between three rotating elements and respective diameters of a work and rotation speed. FIG. 3 is an explanatory view when cold rolling is completed, and FIG. 4 is a system diagram showing another embodiment of the ring forming device. 4 ... Forming roller 4a ... Ring forming part 4b ... Restricting surface 5 ... Mandrel 5a ... Ring forming part 5b ... Restricting surface 13 ... Support roller 13a ... Sliding contact surface 13b ... Support roller shaft 14 ... Work

Claims (1)

【特許請求の範囲】 (1)中央周面に輪体成形部(4a)を、両側周面に規
制面(4b,4b)をそれぞれ形成した成形ローラ
(4)と、この成形ローラ(4)と相対接離可能に対向
され、中央周面に輪体成形部(5a)を、両側周面に規
制面(5b,5b)をそれぞれ形成したマンドレル
(5)と、このマンドレル(5)の背面側に対設され、
上記マンドレル(5)のそれぞれの規制面(5b,5
b)と対接する2つの摺接面(13a,13a)をサポ
ートローラ軸(13b)における成形ローラ(4)の規
制面(4b,4b)対応位置に離間形成したサポートロ
ーラ(13)との3つの回転要素を平面上に平行に配設
して、回転可能に軸支した輪体成形装置。
Claims (1) A molding roller (4) having a ring molding portion (4a) formed on the central peripheral surface and restriction surfaces (4b, 4b) formed on both peripheral surfaces, and the molding roller (4). A mandrel (5) which is opposed to and can be relatively separated from the mandrel (5) having a ring molding part (5a) formed on the central peripheral surface and restriction surfaces (5b, 5b) formed on both peripheral surfaces, and a rear surface of the mandrel (5). On the side,
The restriction surfaces (5b, 5) of the mandrel (5), respectively.
b) two sliding contact surfaces (13a, 13a) facing each other and a support roller (13) formed separately from the support roller shaft (13b) at positions corresponding to the restriction surfaces (4b, 4b) of the forming roller (4). A ring forming device in which two rotating elements are arranged in parallel on a plane and are rotatably supported.
JP3271672A 1991-07-18 1991-07-18 Ring forming equipment Expired - Lifetime JPH0798240B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3271672A JPH0798240B2 (en) 1991-07-18 1991-07-18 Ring forming equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3271672A JPH0798240B2 (en) 1991-07-18 1991-07-18 Ring forming equipment

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP62220049A Division JPS6462238A (en) 1987-09-01 1987-09-01 Ring body forming device

Publications (2)

Publication Number Publication Date
JPH05245571A true JPH05245571A (en) 1993-09-24
JPH0798240B2 JPH0798240B2 (en) 1995-10-25

Family

ID=17503274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3271672A Expired - Lifetime JPH0798240B2 (en) 1991-07-18 1991-07-18 Ring forming equipment

Country Status (1)

Country Link
JP (1) JPH0798240B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176627A (en) * 1986-01-28 1987-08-03 Kyoei Seiko Kk Wheel body forming device for bearing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62176627A (en) * 1986-01-28 1987-08-03 Kyoei Seiko Kk Wheel body forming device for bearing

Also Published As

Publication number Publication date
JPH0798240B2 (en) 1995-10-25

Similar Documents

Publication Publication Date Title
US5140777A (en) Method and apparatus for polishing optical elements
US4951517A (en) Rotational driving apparatus with frictional engagement and robot using the same
EP1577057A2 (en) Machining apparatus and machining method of work end face, roller and roller bearing
JPH04742B2 (en)
EP3401031A1 (en) Enhanced bending machine
US6561869B2 (en) Gear grinding machine and gear grinding method
JPH05245571A (en) Ring body forming device
JP2007530878A (en) Rolling bearing with eccentric outer race
US6551178B1 (en) Reamer with adjustable expansion/contraction, and bore finishing machine comprising the same
JP3783507B2 (en) Machining method of toroidal type continuously variable transmission disk
US4823580A (en) Wheel-body forming apparatus
KR900004836B1 (en) Wheel body forming apparatus
JP2825792B2 (en) Rolling body rolling forming equipment
JPH01313122A (en) Circular body forming apparatus
CN113649915B (en) Outer polishing device of tuber
SU831244A1 (en) Apparatus for vibration running-in of rolling roll in stand
SU738842A1 (en) Apparatus for vibratory polishing
JP3204354B2 (en) Rolling surface finishing method for toroidal type continuously variable transmission
JPH045236Y2 (en)
JPH02110340A (en) Apparatus of testing fatigue and wear of roll due to rolling
ATE149909T1 (en) HAND-HELD SHARING DEVICE WITH ROTATING TOOLS
SU691233A1 (en) Apparatus for knurling toothed profiles
JP3536007B2 (en) Honing machine
SU653092A1 (en) Machine for grinding and polishing optical components with aspherical surfaces
JP2002172559A (en) Burnishing device and method