JP3928912B2 - Rotating shaft coupling mechanism - Google Patents

Rotating shaft coupling mechanism Download PDF

Info

Publication number
JP3928912B2
JP3928912B2 JP31879199A JP31879199A JP3928912B2 JP 3928912 B2 JP3928912 B2 JP 3928912B2 JP 31879199 A JP31879199 A JP 31879199A JP 31879199 A JP31879199 A JP 31879199A JP 3928912 B2 JP3928912 B2 JP 3928912B2
Authority
JP
Japan
Prior art keywords
outer peripheral
oval
peripheral surface
inner hole
roll
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.)
Expired - Fee Related
Application number
JP31879199A
Other languages
Japanese (ja)
Other versions
JP2001140915A (en
Inventor
展央 米山
光政 尾関
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.)
JTEKT Corp
Koyo Machine Industries Co Ltd
Original Assignee
JTEKT Corp
Koyo Machine Industries Co 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 JTEKT Corp, Koyo Machine Industries Co Ltd filed Critical JTEKT Corp
Priority to JP31879199A priority Critical patent/JP3928912B2/en
Publication of JP2001140915A publication Critical patent/JP2001140915A/en
Application granted granted Critical
Publication of JP3928912B2 publication Critical patent/JP3928912B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、圧延機の圧延ロール等の回転軸を連結して駆動するための回転軸連結機構に関する。
【0002】
【従来の技術】
圧延機の圧延ロールは、ユニバーサルジョイントを介してモータに接続され、このモータの駆動力によって回転するようになっている。ただし、この圧延ロールは、使用に伴いロール面が摩耗するので、適宜交換する必要がある。そこで、ユニバーサルジョイントの一端側には、図4及び図5に示すように、筒状のロールカップリング2が設けられ、圧延ロール1の軸端部に形成された横断面小判形の小判形連結部1aを、このロールカップリング2に形成された横断面小判形の小判形内孔2aに嵌合させるようにしている。ロールカップリング2の小判形内孔2aは、圧延ロール1の小判形連結部1aよりも少し大きく形成されているので、圧延ロール1の交換時には、この小判形連結部1aを容易に着脱することができる。また、横断面小判形の小判形内孔2aに小判形連結部1aが嵌合するので、これらの平面部2b,1b同士が係合して、ロールカップリング2側からの回転トルクを圧延ロール1に確実に伝えることができる。
【0003】
もっとも、ロールカップリング2の小判形内孔2aと圧延ロール1の小判形連結部1aとの間には、着脱のための隙間があるため、このまま圧延作業を行ったのでは、圧延ロール1の回転時にガタ付きによる振動が発生し圧延製品の表面にシワ等を生じさせるおそれがある。このため、従来から、ロールカップリング2には、筒状の外周に油圧拡張室付スリーブ3を外嵌し、この油圧拡張室付スリーブ3の圧迫によって小判形内孔2aを収縮させて小判形連結部1aに圧接し固定することにより、圧延ロール1のガタ付きをなくすようにしていた。
【0004】
油圧拡張室付スリーブ3は、筒状の鋼材の内部の内周面に極めて近い部分に全周にわたって薄い筒状の空間からなる油圧拡張室3aが形成されたものであり、外周面に開口した油圧口3bから高圧の油圧を加えることにより、この油圧拡張室3aを拡張させて内周面の径を収縮させることができるようにしたものである。
【0005】
【発明が解決しようとする課題】
ところが、上記油圧拡張室付スリーブ3は、図6に示すように、油圧拡張室3aが拡張して内周面の径が全体に収縮すると、ロールカップリング2の外周面を均等に圧迫することになる。しかしながら、筒状のロールカップリング2は、外周面は円周状であるが、内周面には横断面小判形の小判形内孔2aが形成されているので、この小判形内孔2aの両平面部2bでの肉厚が円周部に比べて特に厚くなる。従って、このように肉厚が不均一なロールカップリング2の外周を均等に圧迫すると、小判形内孔2aは、図7に示すように、肉厚が厚く剛性の高い両平面部2bがそのままの形状を保って内側に平行移動するので、肉厚が薄く剛性の低い円周部は、逆に外側に膨らむように変形しようとする。
【0006】
このため、圧延ロール1の小判形連結部1aは、両平面部1bについては、ロールカップリング2の小判形内孔2aの両平面部2bの間で確実に挟持されるが、この小判形連結部1aの円周部は、小判形内孔2aの円周部に十分に挟持されず、場合によってはここに隙間が生じて、圧延作業時に圧延ロール1が小判形連結部1aの円周部方向にガタ付くおそれがあるという問題が発生していた。
【0007】
なお、ロールカップリング2の小判形内孔2aにおける両平面部2bに、図8に示すような溝2dを形成したり、スリット等を形成して、この部分の剛性を弱めることにより、圧延ロール1の小判形連結部1aを確実に保持しようとする発明も従来からなされている(特許公報第2694683号公報)。しかしながら、このような構成であっても、小判形内孔2aの両平面部2bの肉厚は、溝2dやスリット等がない部分ではまだ厚い状態であるため、全体としてはこれら両平面部2bが内側に平行移動する傾向がある程度残るので、円周部での圧迫力が弱くなるという問題は十分には解消できない。しかも、油圧拡張室付スリーブ3がロールカップリング2の外周面を圧迫した場合に、溝2dやスリットの縁部に応力が集中し易くなるので、これらのエッジ部分のみが小判形連結部1aに食い込んで点接触や線接触による挟持となり、平面部2bの面接触による確実な挟持ができないという問題も生じる。
【0008】
本発明は、かかる事情に鑑みてなされたものであり、被連結部材の筒状部の小判形内孔を均等に収縮させることにより回転軸の小判形連結部を確実に圧接することができる回転軸連結機構を提供することを目的としている。
【0009】
【課題を解決するための手段】
請求項1の発明は、円周状の外周面の両側を軸心に沿う互いにほぼ平行な平面で削り取った形状の横断面小判形に形成された回転軸の軸端部の小判形連結部を、この小判形連結部よりも少し大きい横断面小判形に形成された被連結部材の筒状部の小判形内孔に挿入し、この被連結部材の筒状部の外周に外嵌された押圧装置の内周径を全体に収縮させることにより、筒状部を圧迫して小判形内孔を回転軸の小判形連結部に圧接し固定する回転軸連結機構において、
被連結部材の筒状部における小判形内孔の平面部の外周側に位置する外周面の全部又は一部と押圧装置の内周面との間の隙間を、この小判形内孔の円周部の外周側に位置する外周面と押圧装置の内周面との間の隙間よりも大きく形成し、
更に、前記押圧装置の内周面が真円の円周面であり、被連結部材の筒状部の外周面が、この押圧装置の内周面よりもわずかに径の小さい真円の円周面に沿い、かつ、前記小判形内孔の平面部の外周側に位置する外周面の一部又は全部のみがこの円周面よりも内側に引き込んだ平面又は曲面に形成されたことを特徴とする。
【0010】
請求項1の発明によれば、押圧装置が内周径を収縮すると、筒状部における小判形内孔の円周部の外周側に位置する外周面は、隙間が小さいために十分に圧迫されるが、小判形内孔の平面部の外周側に位置する外周面は、隙間が大きい部分があるために十分な圧迫がなされない。従って、この筒状部は、肉厚の厚い平面部側は圧迫が弱くなり、肉厚の薄い円周部は圧迫が強いので、剛性の高い平面部が圧迫による平行移動によって剛性の低い円周部を外側に膨らませて変形させるようなおそれがなくなり、回転軸の小判形連結部を全周にわたって確実に圧接することができるようになる。また、押圧装置の内周面は真円であるので、この押圧装置の製造が容易となる。更に、被連結部材の筒状部の外周面は、真円に加工した後に必要個所を削ることにより、本来の円周面よりも内側に引き込んだ平面や曲面を容易に形成することができる。
【0011】
請求項2の発明は、前記被連結部材の筒状部の外周面における内側に引き込んだ平面又は曲面が、小判形内孔の平面部の両端部の外周側に位置する外周面にのみ形成されたことを特徴とする。
【0012】
請求項の発明によれば、押圧装置が内周径を収縮すると、筒状部における小判形内孔の円周部の外周側に位置する外周面と、平面部の中央部の外周側に位置する外周面とは、隙間が小さいために十分に圧迫されるが、小判形内孔の平面部の両端部の外周側に位置する外周面は、内側に引き込んだ平面や曲面によって隙間が大きくなるために十分な圧迫がなされない。従って、この筒状部は、円周部と平面部の中央部のみが強く均一に圧迫されるので、回転軸の小判形連結部を四方から確実に圧接することができるようになる。しかも、肉厚の厚い平面部側は両端部の圧迫が不足して、全体としては圧迫が弱くなり、肉厚の薄い円周部は全体が十分に圧迫されるので、剛性の高い平面部が圧迫による平行移動によって剛性の低い円周部を外側に膨らませて変形させるようなおそれもなくなる。
【0013】
請求項の発明は、前記被連結部材の筒状部の外周面における内側に引き込んだ平面又は曲面が、小判形内孔の平面部の中央部の外周側に位置する外周面にのみ形成されたことを特徴とする。
【0014】
請求項の発明によれば、押圧装置が内周径を収縮すると、筒状部における小判形内孔の円周部の外周側に位置する外周面と、平面部の両端部の外周側に位置する外周面とは、隙間が小さいために十分に圧迫されるが、小判形内孔の平面部の中央部の外周側に位置する外周面は、内側に引き込んだ平面や曲面によって隙間が大きくなるために十分な圧迫がなされない。従って、この筒状部は、円周部と平面部の両端部のみが強く均一に圧迫されるので、回転軸の小判形連結部を円周部の周囲から確実に圧接することができるようになる。しかも、肉厚の厚い平面部側は中央部の圧迫が不足して、全体としては圧迫が弱くなり、肉厚の薄い円周部は全体が十分に圧迫されるので、剛性の高い平面部が圧迫による平行移動によって剛性の低い円周部を外側に膨らませて変形させるようなおそれもなくなる。
【0015】
【発明の実施の形態】
以下、本発明の実施形態について図面を参照して説明する。
【0016】
図1〜図2は本発明の第1実施形態を示すものであって、図1は圧延機の回転軸連結機構の構成を示す横断面図、図2はロールカップリングの構成を示す斜視図である。なお、図4〜図8に示した従来例と同様の機能を有する構成部材には同じ番号を付記する。
【0017】
本実施形態は、図1に示すように、従来例と同様の圧延機の圧延ロール1をロールカップリング2に連結する回転軸連結機構について説明する。圧延ロール1の軸端部には、従来例と同様に、横断面小判形の小判形連結部1aが形成されている。横断面小判形とは、軸体の円周状の外周面の両側を軸心に沿う互いにほぼ平行な平面で削り取った形状をいい、外周面のうちで平面により削り取られた部分がそれぞれ平面部となり、残りの部分が円周部となる。また、通常はこれらの平面部が軸心から等距離となり左右対称の形状をなす。ただし、横断面小判形の孔の場合には、この軸体の外周面が隙間なく嵌合するような孔形状をいう。
【0018】
ロールカップリング2は、ユニバーサルジョイントの一端部に形成された、圧延ロール1を連結するための筒状部であり、図2に示すように、この筒状部の内周には、小判形内孔2aが形成されている。小判形内孔2aは、圧延ロール1の小判形連結部1aよりも少し大きい横断面小判形に形成された孔、即ち小判形連結部1aの外周面との間にほぼ均一なわずかずつの隙間が形成されるような横断面小判形の孔であり、円周状の円周部と平面状の平面部2bとを備えている。このロールカップリング2の外周面には、小判形内孔2aの円周部と同心状の真円の円周面が形成されると共に、小判形内孔2aの各平面部2bの両端部に位置する外周面には、それぞれ切り欠き面2cが形成されている。切り欠き面2cは、ロールカップリング2の外周面の一部を軸心に沿った平面で削り取ったような形状の平面であり、本来の円周面よりも内側に引き込んだ面となる。なお、本実施形態では、切り欠き面2cがロールカップリング2の外周面のほぼ全長にわたって形成されているが、軸方向の基部と端縁部を除く中央部にだけ形成してもよい。
【0019】
上記ロールカップリング2の外周には、図1に示すように、油圧拡張室付スリーブ3が外嵌される。油圧拡張室付スリーブ3は、従来例と同様に、内周にロールカップリング2の外周面よりもわずかに大きい真円の円周面を備えた筒体であり、この内周面に極めて近い部分に全周にわたって薄い筒状の空間からなる油圧拡張室3aが形成されたものである。そして、この油圧拡張室3aには、外周面に開口する油圧口3bが通じていて、この油圧口3bから高圧の油圧を加えることにより、この油圧拡張室3aを拡張させて内周面の径を収縮させることができるようになっている。このようにして油圧拡張室付スリーブ3が外嵌されると、ロールカップリング2の外周面との間には、わずかな隙間が生じるが、この外周面の切り欠き面2cが形成された部分では、この隙間がさらに大きくなる。
【0020】
上記構成の回転軸連結機構は、まず圧延ロール1の軸端部の小判形連結部1aをロールカップリング2の小判形内孔2aに挿入する。この場合、小判形内孔2aは、小判形連結部1aよりも少し大きく形成されているので、容易に挿入することができる。次に、油圧拡張室付スリーブ3の油圧口3bに高圧の油圧を加えて内周径を収縮させる。すると、この油圧拡張室付スリーブ3の内周面は、ロールカップリング2の外周面を内側に向けて圧迫し、小判形内孔2aを収縮させる。ただし、この際、ロールカップリング2の外周面の圧迫は、小判形内孔2aの円周部の外周側や平面部2bの中央部の外周側の方が、切り欠き面2cが形成されて隙間が大きくなった小判形内孔2aの平面部2bの両端部の外周側よりも強くなる。このため、ロールカップリング2は、小判形内孔2aを四方から均等に収縮させて、圧延ロール1の小判形連結部1aの外周面に確実に圧接する。しかも、ロールカップリング2における小判形内孔2aの平面部2bの外周側は、切り欠き面2cが形成された部分での圧迫が弱くなるので、全体として小判形内孔2aの円周部の圧迫の方が強くなる。従って、肉厚が厚く剛性の高い平面部2b側が強く圧迫されて平行移動することにより、肉厚が薄く剛性の低い円周部側が外側に膨らみ変形するようなおそれがなくなるので、この円周部側での圧接が十分に行われるようになって、圧延ロール1の小判形連結部1aを確実に固定できるようになる。
【0021】
以上説明したように、本実施形態によれば、ロールカップリング2の小判形内孔2aが圧延ロール1の小判形連結部1aの外周面を四方から確実に圧接し固定するので、圧延作業時に圧延ロール1に半径方向の強い力が加わった場合にも、ロールカップリング2との間にガタ付きが生じないようにすることができる。
【0022】
図3は本発明の第2実施形態を示すものであって、圧延機の回転軸連結機構の構成を示す横断面側面図である。なお、図1〜図2に示した第1実施形態と同様の機能を有する構成部材には同じ番号を付記する。
【0023】
本実施形態は、第1実施形態と同様に、圧延機の圧延ロール1をロールカップリング2に連結する回転軸連結機構について説明する。圧延ロール1と油圧拡張室付スリーブ3の構成は、第1実施形態と同じである。また、ロールカップリング2も、第1実施形態とほぼ同様であり、図3に示すように、内周には、小判形内孔2aが形成されている。しかし、このロールカップリング2の外周面には、小判形内孔2aの円周部と同心状の真円の円周面が形成されると共に、小判形内孔2aの各平面部2bにおける中央部の外周側に位置する外周面に、それぞれ切り欠き面2cが形成されている。なお、本実施形態でも、切り欠き面2cがロールカップリング2の外周面のほぼ全長にわたって形成されているが、軸方向の基部と端縁部を除く中央部にだけ形成してもよい。
【0024】
上記ロールカップリング2の外周には、第1実施形態と同じ油圧拡張室付スリーブ3が外嵌される。このようにして油圧拡張室付スリーブ3が外嵌されると、ロールカップリング2の外周面との間には、わずかな隙間が生じるが、この外周面の切り欠き面2cが形成された部分では、この隙間がさらに大きくなる。
【0025】
上記構成の回転軸連結機構も、第1実施形態と同様に、圧延ロール1の軸端部の小判形連結部1aをロールカップリング2の小判形内孔2aに挿入し、油圧拡張室付スリーブ3の油圧口3bに高圧の油圧を加えて内周径を収縮させる。すると、この油圧拡張室付スリーブ3の内周面は、ロールカップリング2の外周面を内側に向けて圧迫し、小判形内孔2aを収縮させる。ただし、この際、ロールカップリング2の外周面の圧迫は、小判形内孔2aの円周部の外周側や平面部2bの両端部の外周側の方が、切り欠き面2cが形成されて隙間が大きくなった小判形内孔2aの平面部2bの中央部の外周側よりも強くなる。このため、ロールカップリング2は、小判形内孔2aを円周部の周囲から抱え込むように均等に収縮させて、圧延ロール1の小判形連結部1aの外周面に確実に圧接する。しかも、ロールカップリング2における小判形内孔2aの平面部2bの外周側は、切り欠き面2cが形成された部分での圧迫が弱くなるので、全体として小判形内孔2aの円周部の圧迫の方が強くなる。従って、第1実施形態の場合と同様に、円周部側が外側に膨らみ変形するようなおそれがなくなるので、この円周部側での圧接が十分に行われるようになって、圧延ロール1の小判形連結部1aを確実に固定できるようになる。
【0026】
以上説明したように、本実施形態によれば、ロールカップリング2の小判形内孔2aが圧延ロール1の小判形連結部1aの外周面を両側の円周部の周囲から確実に圧接し固定するので、圧延作業時に圧延ロール1に半径方向の強い力が加わった場合にも、ロールカップリング2との間にガタ付きが生じないようにすることができる。
【0027】
なお、上記第1と第2の実施形態では、ロールカップリング2の外周面に軸方向に沿った切り欠き面2cが形成される場合について説明したが、この切り欠き面2cは、ロールカップリング2における小判形内孔2aの平面部2bの外周側の外周面であれば、その全部又は任意の一部にどのように形成してもよい。また、この切り欠き面2cは、平面である必要もなく、例えば外周面の円周面よりも曲率の小さい曲面によって構成することもできる。
【0028】
また、上記第1と第2の実施形態では、油圧拡張室付スリーブ3の内周面とロールカップリング2の外周面における切り欠き面2c以外の円周面が真円である場合について説明したが、これらは必ずしも真円である必要はなく、例えば双方が楕円形の円周面を有するものであってもよい。ただし、油圧拡張室付スリーブ3は、円筒形の本体の内周にわずかに径が小さく極めて薄い筒体を隙間が等しくなるように挿入し、両端の開口部を溶接により封止することにより製造されるものである。従って、この油圧拡張室付スリーブ3の内周面を楕円形に形成しようとすると、楕円形の内周面にさらに楕円形の極めて薄い筒体を挿入し溶接しなければならないので、精度の高い加工が極めて困難となる。これに対して、油圧拡張室付スリーブ3の内周面が真円の円周面であれば、油圧拡張室付スリーブ3の製造が容易になるだけでなく、ロールカップリング2の外周面の切り欠き面2cも真円の円周面を形成した後に切削や研削加工によって容易に形成することができる。
【0029】
さらに、上記第1と第2の実施形態では、ロールカップリング2の外周面における円周面が真円である場合について説明したが、これは必ずしも真円である必要はなく、例えば楕円形の円周面を有するものであってもよい。この場合、ロールカップリング2の小判形内孔2aの円周部側が長軸となるような楕円形の円周面とすることにより、小判形内孔2aの平面部2b側を楕円形の短軸とすることができるので、油圧拡張室付スリーブ3の真円の内周面との間に平面部2b側ほど大きな隙間を形成することができ、切り欠き面2cを形成した場合と同様の効果を得ることができる。
【0030】
さらに、上記第1と第2の実施形態では、ロールカップリング2を圧迫するために油圧拡張室付スリーブ3を用いたが、このロールカップリング2の外周面をほぼ均等に圧迫するものであれば、どのような押圧装置を用いてもよい。例えば、油圧拡張室付スリーブ3のような機械構造によって内周径を収縮させる他、物理構造や熱膨張/収縮によって内周径を収縮させるようなものであってもよい。
【0031】
さらに、上記第1と第2の実施形態では、圧延機の圧延ロール1をロールカップリング2に連結する回転軸連結機構について説明したが、その他の回転軸を連結する回転軸連結機構についても、同様に実施可能である。
【0032】
【発明の効果】
以上の説明から明らかなように、本発明の回転軸連結機構によれば、被連結部材の筒状部の外周面の一部に押圧装置の内周面との隙間が大きくなる部分を形成することにより、この押圧装置の圧迫力のバランスを調整して、筒状部の小判形内孔を回転軸の小判形連結部に確実に圧接して固定することができるようになる。
【図面の簡単な説明】
【図1】 本発明の第1実施形態を示すものであって、圧延機の回転軸連結機構の構成を示す横断面図である。
【図2】本発明の第1実施形態を示すものであって、ロールカップリングの構成を示す斜視図である。
【図3】 本発明の第2実施形態を示すものであって、圧延機の回転軸連結機構の構成を示す横断面図である。
【図4】 従来例を示すものであって、圧延機の回転軸連結機構の構成を示す縦断面斜視図である。
【図5】 従来例を示すものであって、圧延機の回転軸連結機構の構成を示す軸方向断面図である。
【図6】 従来例を示すものであって、圧延機の回転軸連結機構の構成を示す横断面図である。
【図7】 従来例を示すものであって、ロールカップリングの変形の様子を示す断面図である。
【図8】 他の従来例を示すものであって、圧延機の回転軸連結機構の構成を示す横断面図である。
【符号の説明】
1 圧延ロール
1a 小判形連結部
1b 平面部
2 ロールカップリング
2a 小判形内孔
2b 平面部
2c 切り欠き面
3 油圧拡張室付スリーブ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary shaft coupling mechanism for coupling and driving a rotary shaft such as a rolling roll of a rolling mill.
[0002]
[Prior art]
A rolling roll of the rolling mill is connected to a motor via a universal joint and is rotated by a driving force of the motor. However, since the roll surface is worn with use, the roll needs to be replaced as appropriate. Therefore, as shown in FIGS. 4 and 5, a cylindrical roll coupling 2 is provided on one end side of the universal joint, and an oval connection with an oval cross section formed at the shaft end of the rolling roll 1. The portion 1a is fitted into an oval inner hole 2a having an oval cross section formed in the roll coupling 2. Since the oval inner hole 2a of the roll coupling 2 is formed to be slightly larger than the oval connecting portion 1a of the rolling roll 1, the oval connecting portion 1a can be easily attached and detached when the rolling roll 1 is replaced. Can do. Further, since the oval connecting portion 1a is fitted into the oval inner hole 2a having an oval cross section, the flat portions 2b and 1b are engaged with each other, and the rotational torque from the roll coupling 2 side is reduced to the rolling roll. 1 can be surely communicated.
[0003]
However, since there is a gap for attachment and detachment between the oval inner hole 2a of the roll coupling 2 and the oval connecting portion 1a of the rolling roll 1, if the rolling operation is performed as it is, the rolling roll 1 There is a risk that wobbling or the like may occur on the surface of the rolled product due to vibration caused by rattling during rotation. For this reason, conventionally, the roll coupling 2 is externally fitted with a sleeve 3 with a hydraulic expansion chamber on the outer periphery of the cylinder, and the oval inner hole 2a is contracted by the compression of the sleeve 3 with the hydraulic expansion chamber. The backlash of the rolling roll 1 is eliminated by pressing and fixing the connecting portion 1a.
[0004]
The sleeve 3 with a hydraulic expansion chamber is formed with a hydraulic expansion chamber 3a formed of a thin cylindrical space over the entire circumference in a portion very close to the inner peripheral surface of the cylindrical steel material, and is open to the outer peripheral surface. By applying a high hydraulic pressure from the hydraulic port 3b, the hydraulic expansion chamber 3a is expanded so that the diameter of the inner peripheral surface can be contracted.
[0005]
[Problems to be solved by the invention]
However, as shown in FIG. 6, the sleeve 3 with the hydraulic expansion chamber compresses the outer peripheral surface of the roll coupling 2 evenly when the hydraulic expansion chamber 3a expands and the diameter of the inner peripheral surface contracts as a whole. become. However, the cylindrical roll coupling 2 has an outer peripheral surface that is circumferential, but the inner peripheral surface is formed with an oval inner hole 2a having an oval cross section. The wall thickness at both planar portions 2b is particularly thicker than the circumferential portion. Accordingly, when the outer circumference of the roll coupling 2 having a non-uniform thickness is pressed evenly, the oval-shaped inner hole 2a has the two flat portions 2b having a large thickness and high rigidity as shown in FIG. Therefore, the circumferentially thin portion having a small thickness and low rigidity tends to be deformed so as to bulge outward.
[0006]
For this reason, the oval connecting portion 1a of the rolling roll 1 is securely sandwiched between the two flat surface portions 2b of the oval inner hole 2a of the roll coupling 2 with respect to the two flat surface portions 1b. The circumferential portion of the portion 1a is not sufficiently clamped by the circumferential portion of the oval inner hole 2a, and in some cases, a gap is generated here, so that the rolling roll 1 is circumferentially connected to the oval connecting portion 1a during the rolling operation. There was a problem that there was a risk of rattling in the direction.
[0007]
In addition, by forming grooves 2d as shown in FIG. 8 in both flat surface portions 2b of the oval inner hole 2a of the roll coupling 2 or forming slits or the like to weaken the rigidity of this portion, the rolling roll An invention for securely holding one oval connecting portion 1a has also been made (Patent Publication No. 2694683). However, even in such a configuration, the thickness of the two flat portions 2b of the oval inner hole 2a is still thick in a portion where there is no groove 2d, slits, or the like. However, the problem that the compression force at the circumference is weak cannot be solved sufficiently. In addition, when the sleeve 3 with the hydraulic expansion chamber presses the outer peripheral surface of the roll coupling 2, stress is easily concentrated on the edge of the groove 2d and the slit, so that only these edge portions are in the oval connecting portion 1a. There is also a problem that it is pinched by point contact or line contact and cannot be securely pinched by surface contact of the flat surface portion 2b.
[0008]
The present invention has been made in view of such circumstances, and can rotate the oval connecting portion of the rotating shaft reliably by contracting the oval inner hole of the cylindrical portion of the connected member evenly. The object is to provide a shaft coupling mechanism.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided an oval connecting portion at a shaft end portion of a rotating shaft formed in a cross-sectional oval shape in which both sides of a circumferential outer peripheral surface are scraped by planes substantially parallel to each other along an axis. , Inserted into the oval inner hole of the tubular portion of the connected member formed in an oval shape having a slightly larger cross section than the oval connecting portion, and a press fitted around the outer periphery of the tubular portion of the connected member In the rotary shaft coupling mechanism that compresses the cylindrical part and presses and fixes the oval inner hole to the oval coupling part of the rotary shaft by shrinking the inner peripheral diameter of the device as a whole,
The gap between the whole or a part of the outer peripheral surface located on the outer peripheral side of the flat portion of the oval inner hole in the cylindrical portion of the connected member and the inner peripheral surface of the pressing device is the circumference of the oval inner hole. Forming larger than the gap between the outer peripheral surface located on the outer peripheral side of the part and the inner peripheral surface of the pressing device,
Further, the inner peripheral surface of the pressing device is a perfect circular circumferential surface, and the outer peripheral surface of the tubular portion of the connected member is a perfect circular circumference slightly smaller in diameter than the inner peripheral surface of the pressing device. A part or all of the outer peripheral surface located along the surface and on the outer peripheral side of the flat portion of the oval inner hole is formed into a flat surface or a curved surface drawn inward from the circumferential surface. To do.
[0010]
According to the invention of claim 1, when the pressing device contracts the inner peripheral diameter, the outer peripheral surface located on the outer peripheral side of the peripheral portion of the oval inner hole in the cylindrical portion is sufficiently compressed because the gap is small. However, the outer peripheral surface located on the outer peripheral side of the flat portion of the oval inner hole is not sufficiently compressed because there is a portion having a large gap. Therefore, this cylindrical part is less compressed on the thicker flat part side, and the thinner circumferential part is stronger, so the higher rigid flat part has a lower rigidity due to the parallel movement caused by the compression. This eliminates the possibility of causing the portion to bulge outward and deforms it, so that the oval connecting portion of the rotating shaft can be reliably pressed over the entire circumference. Moreover, since the inner peripheral surface of the pressing device is a perfect circle , the manufacturing of the pressing device is facilitated. Further , the outer peripheral surface of the cylindrical portion of the connected member can be easily formed into a flat surface or a curved surface drawn inward from the original circumferential surface by cutting a necessary portion after being processed into a perfect circle.
[0011]
In the invention of claim 2, the flat surface or curved surface drawn inwardly on the outer peripheral surface of the cylindrical portion of the connected member is formed only on the outer peripheral surface located on the outer peripheral side of both ends of the flat portion of the oval inner hole. It is characterized by that.
[0012]
According to the invention of claim 2 , when the pressing device contracts the inner peripheral diameter, the outer peripheral surface located on the outer peripheral side of the circumferential portion of the oval inner hole in the cylindrical portion and the outer peripheral side of the central portion of the flat portion. The outer peripheral surface is sufficiently compressed because the gap is small, but the outer peripheral surface located on the outer peripheral side of both ends of the flat portion of the oval inner hole has a large gap due to the plane or curved surface drawn inward There is not enough pressure to be. Therefore, since only the circumferential portion and the central portion of the flat portion are strongly and uniformly pressed in this cylindrical portion, the oval connecting portion of the rotating shaft can be reliably pressed from four directions. In addition, both sides of the thick flat surface side are insufficiently compressed, and the compression is weak as a whole, and the thin circumferential portion is fully compressed, so a highly rigid flat surface portion There is no risk of deforming the circumferential portion having low rigidity due to the parallel movement caused by the compression.
[0013]
According to a third aspect of the present invention, the flat surface or curved surface drawn inwardly on the outer peripheral surface of the cylindrical portion of the connected member is formed only on the outer peripheral surface located on the outer peripheral side of the central portion of the flat portion of the oval inner hole. It is characterized by that.
[0014]
According to the invention of claim 3 , when the pressing device contracts the inner peripheral diameter, the outer peripheral surface located on the outer peripheral side of the circumferential portion of the oval inner hole in the cylindrical portion and the outer peripheral side of both end portions of the flat portion. The outer peripheral surface is sufficiently compressed because the gap is small, but the outer peripheral surface located on the outer peripheral side of the central part of the flat part of the oval inner hole has a large gap due to the plane or curved surface drawn inward There is not enough pressure to be. Therefore, since this cylindrical part is strongly and uniformly compressed at both ends of the circumferential part and the flat part, the oval connecting part of the rotating shaft can be reliably pressed from the circumference of the circumferential part. Become. In addition, the thicker flat surface side is insufficiently compressed in the center, and the overall compression is weak, and the thin circumferential portion is fully compressed, so a highly rigid flat surface portion There is no risk of deforming the circumferential portion having low rigidity due to the parallel movement caused by the compression.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
Figures 1-2, there is shown a first embodiment of the present invention, FIG. 1 is a cross sectional view showing the configuration of a rotary shaft coupling mechanism of the rolling machine, Figure 2 shows the configuration of a roll coupling It is a perspective view. In addition, the same number is attached | subjected to the structural member which has the same function as the prior art example shown in FIGS.
[0017]
This embodiment, as shown in FIG. 1, illustrating a rolling roll 1 of the conventional example similar to the mill for rotating shaft coupling mechanism for connecting to the roll coupling 2. At the shaft end portion of the rolling roll 1, an oval connecting portion 1a having an oval cross section is formed as in the conventional example. The cross-sectional oblong shape refers to a shape in which both sides of the circumferential outer peripheral surface of the shaft body are scraped by planes that are substantially parallel to each other along the axis, and each portion of the outer peripheral surface that is scraped by the plane is a flat portion. And the remaining part becomes the circumferential part. Usually, these flat portions are equidistant from the axis and have a symmetrical shape. However, in the case of a hole having an oblong cross section, the hole shape is such that the outer peripheral surface of the shaft body is fitted without a gap.
[0018]
The roll coupling 2 is a cylindrical portion for connecting the rolling roll 1 formed at one end of the universal joint. As shown in FIG. A hole 2a is formed. The oval inner hole 2a is a hole formed in a cross sectional oval shape slightly larger than the oval connecting portion 1a of the rolling roll 1, that is, a substantially uniform small gap between the outer periphery of the oval connecting portion 1a. Is a hole having a cross-sectional oblong shape, and includes a circumferential portion and a planar surface portion 2b. On the outer peripheral surface of the roll coupling 2, a circular surface that is concentric with the circumferential portion of the oval inner hole 2a is formed, and at both ends of each flat portion 2b of the oval inner hole 2a. A notch surface 2c is formed on each of the positioned outer peripheral surfaces. The notch surface 2c is a flat surface having a shape obtained by scraping a part of the outer peripheral surface of the roll coupling 2 along a plane along the axis, and is a surface drawn inward from the original circumferential surface. In the present embodiment, the notch surface 2c is formed over almost the entire length of the outer peripheral surface of the roll coupling 2, but it may be formed only in the central portion excluding the base portion and the edge portion in the axial direction.
[0019]
As shown in FIG. 1, a sleeve 3 with a hydraulic expansion chamber is fitted on the outer periphery of the roll coupling 2. The sleeve 3 with the hydraulic expansion chamber is a cylindrical body having a circular circumferential surface slightly larger than the outer peripheral surface of the roll coupling 2 on the inner periphery, as in the conventional example, and extremely close to the inner peripheral surface. The hydraulic expansion chamber 3a formed of a thin cylindrical space over the entire circumference is formed in the part. The hydraulic expansion chamber 3a is connected to a hydraulic port 3b that opens to the outer peripheral surface. By applying high pressure hydraulic pressure from the hydraulic port 3b, the hydraulic expansion chamber 3a is expanded and the diameter of the inner peripheral surface is increased. Can be shrunk. When the sleeve 3 with the hydraulic expansion chamber is externally fitted in this way, a slight gap is generated between the roll coupling 2 and the outer peripheral surface. Then, this gap becomes larger.
[0020]
In the rotary shaft coupling mechanism having the above configuration, first, the oval coupling portion 1 a at the shaft end of the rolling roll 1 is inserted into the oval inner hole 2 a of the roll coupling 2. In this case, the oval inner hole 2a is formed slightly larger than the oval connecting portion 1a, so that it can be easily inserted. Next, high-pressure oil pressure is applied to the hydraulic port 3b of the sleeve 3 with the hydraulic expansion chamber to contract the inner peripheral diameter. Then, the inner peripheral surface of the sleeve 3 with the hydraulic expansion chamber presses the outer surface of the roll coupling 2 inward to contract the oval inner hole 2a. However, at this time, the outer peripheral surface of the roll coupling 2 is compressed with the notch surface 2c formed on the outer peripheral side of the circumferential portion of the oval inner hole 2a and the outer peripheral side of the central portion of the flat surface portion 2b. It becomes stronger than the outer peripheral side of both ends of the flat surface portion 2b of the oval inner hole 2a in which the gap is increased. For this reason, the roll coupling 2 shrinks the oval inner hole 2a evenly from the four sides and reliably presses the outer surface of the oval connecting portion 1a of the rolling roll 1. Moreover, the outer peripheral side of the flat portion 2b of the oval inner hole 2a in the roll coupling 2 is weakly compressed at the portion where the notch surface 2c is formed. The pressure is stronger. Accordingly, since the flat portion 2b side having a large thickness and high rigidity is strongly compressed and moved in parallel, there is no possibility that the circumferential portion side having a small thickness and low rigidity bulges outward and is deformed. As a result, the oval connection 1a of the rolling roll 1 can be reliably fixed.
[0021]
As described above, according to the present embodiment , the oval inner hole 2a of the roll coupling 2 reliably presses and fixes the outer peripheral surface of the oval connecting portion 1a of the rolling roll 1 from four directions, so that the rolling work Even when a strong force in the radial direction is applied to the rolling roll 1 sometimes, it is possible to prevent rattling from occurring with the roll coupling 2.
[0022]
Figure 3 is a view illustrating the second embodiment of the present invention, is a cross-sectional side view showing the configuration of a rolling mill of rotating shaft coupling mechanism. In addition, the same number is attached | subjected to the structural member which has a function similar to 1st Embodiment shown in FIGS. 1-2.
[0023]
This embodiment, like the first embodiment, will be described rotary shaft coupling mechanism for coupling the rolling roll 1 of the rolling mill to roll the coupling 2. The structure of the rolling roll 1 and the sleeve 3 with a hydraulic expansion chamber is the same as that of the first embodiment. Further, the roll coupling 2 also is substantially similar to the first embodiment, as shown in FIG. 3, the inner circumference, are formed oval shape hole 2a. However, on the outer peripheral surface of the roll coupling 2, a circular surface that is concentric with the circumferential portion of the oval inner hole 2a is formed, and the center of each flat surface portion 2b of the oval inner hole 2a is formed. A notch surface 2c is formed on each outer peripheral surface located on the outer peripheral side of the portion. In the present embodiment, the notch surface 2c is formed over substantially the entire length of the outer peripheral surface of the roll coupling 2, but it may be formed only in the central portion excluding the base portion and the edge portion in the axial direction.
[0024]
Above the outer periphery of the roll coupling 2, the first same hydraulic expansion chamber with the sleeve 3 from the embodiment of is fitted. When the sleeve 3 with the hydraulic expansion chamber is externally fitted in this way, a slight gap is generated between the roll coupling 2 and the outer peripheral surface. Then, this gap becomes larger.
[0025]
Rotary shaft coupling mechanism of the above configuration, similarly to the first embodiment, by inserting the oval coupling portion 1a of the shaft end portion of the rolling roller 1 into oval shape hole 2a of the roll coupling 2, hydraulic expansion chamber A high-pressure oil pressure is applied to the hydraulic port 3b of the attached sleeve 3 to shrink the inner peripheral diameter. Then, the inner peripheral surface of the sleeve 3 with the hydraulic expansion chamber presses the outer surface of the roll coupling 2 inward to contract the oval inner hole 2a. However, at this time, the outer peripheral surface of the roll coupling 2 is compressed by the notch surface 2c formed on the outer peripheral side of the circumferential portion of the oval inner hole 2a and the outer peripheral side of both end portions of the flat surface portion 2b. It becomes stronger than the outer peripheral side of the central portion of the flat surface portion 2b of the oval inner hole 2a in which the gap is increased. For this reason, the roll coupling 2 is uniformly contracted so as to hold the oval inner hole 2a from the periphery of the circumferential portion, and is securely pressed against the outer peripheral surface of the oval connecting portion 1a of the rolling roll 1. Moreover, the outer peripheral side of the flat portion 2b of the oval inner hole 2a in the roll coupling 2 is weakly compressed at the portion where the notch surface 2c is formed. The pressure is stronger. Therefore, as in the case of the first embodiment, there is no possibility that the circumferential side swells outward and deforms, so that the pressure contact on the circumferential side is sufficiently performed, and the rolling roll 1 The oval connecting portion 1a can be reliably fixed.
[0026]
As described above, according to the present embodiment , the oval inner hole 2a of the roll coupling 2 reliably presses the outer peripheral surface of the oval connecting portion 1a of the rolling roll 1 from the periphery of the circumferential portions on both sides. Since it fixes, even when a strong radial force is applied to the rolling roll 1 during the rolling operation, it is possible to prevent rattling from occurring with the roll coupling 2.
[0027]
In the first and second embodiments , the case where the notch surface 2c along the axial direction is formed on the outer peripheral surface of the roll coupling 2 has been described. However, the notch surface 2c As long as it is an outer peripheral surface on the outer peripheral side of the flat portion 2b of the oval inner hole 2a in the ring 2, it may be formed in its entirety or any part. Moreover, this notch surface 2c does not need to be a plane, For example, it can also be comprised by the curved surface whose curvature is smaller than the circumferential surface of an outer peripheral surface.
[0028]
Further, the first and the second embodiment, when the inner peripheral surface and the circumferential surface other than the cut-away surface 2c of the outer peripheral surface of the roll coupling 2 of the hydraulic expansion chamber with the sleeve 3 is true circle description However, these do not necessarily have to be a perfect circle, and for example, both may have an elliptical circumferential surface. However, the sleeve 3 with a hydraulic expansion chamber is manufactured by inserting a very thin cylinder with a small diameter into the inner periphery of the cylindrical body so that the gaps are equal, and sealing the openings at both ends by welding. It is what is done. Accordingly, if the inner peripheral surface of the sleeve 3 with the hydraulic expansion chamber is to be formed in an elliptical shape, a very thin cylindrical body having an elliptical shape must be inserted and welded to the inner peripheral surface of the elliptical shape with high accuracy. Processing becomes extremely difficult. On the other hand, if the inner peripheral surface of the sleeve 3 with the hydraulic expansion chamber is a perfect circular circumferential surface, not only the manufacture of the sleeve 3 with the hydraulic expansion chamber is facilitated but also the outer peripheral surface of the roll coupling 2 is improved. The notch surface 2c can also be easily formed by cutting or grinding after forming a perfectly circular circumferential surface.
[0029]
Furthermore, the first and the second embodiments have been described circumferential surface of the outer peripheral surface of the roll coupling 2 is true circle, which is not necessarily a perfect circle, for example, oval It may have a circumferential surface. In this case, the oval circumferential surface of the oval inner hole 2a of the roll coupling 2 has a major axis on the circumferential side of the oval inner hole 2a. Since it can be used as a shaft, a larger gap can be formed on the flat portion 2b side with the perfect inner circumference surface of the sleeve 3 with the hydraulic expansion chamber, which is the same as the case where the notch surface 2c is formed. An effect can be obtained.
[0030]
Furthermore, the first and the second embodiment uses a hydraulic expansion chamber with the sleeve 3 in order to compress the roll coupling 2, intended to substantially uniformly compress the outer peripheral surface of the roll coupling 2 Any pressing device may be used as long as it exists. For example, the inner peripheral diameter may be contracted by a mechanical structure such as the sleeve 3 with a hydraulic expansion chamber, or the inner peripheral diameter may be contracted by a physical structure or thermal expansion / contraction.
[0031]
Furthermore, the first and the second embodiment has been described rotary shaft coupling mechanism for coupling the rolling roll 1 of the rolling mill to roll the coupling 2, also the rotation shaft coupling mechanism for connecting the other rotating shaft Can be implemented as well.
[0032]
【The invention's effect】
As is clear from the above description, according to the rotating shaft coupling mechanism of the present invention, a portion where the gap with the inner circumferential surface of the pressing device becomes large is formed in a part of the outer circumferential surface of the cylindrical portion of the coupled member. Thus, the balance of the compression force of the pressing device can be adjusted, and the oval inner hole of the cylindrical portion can be securely pressed and fixed to the oval connecting portion of the rotating shaft.
[Brief description of the drawings]
[1] there is shown a first embodiment of the present invention, it is a cross-sectional view showing the configuration of a rolling mill of rotating shaft coupling mechanism.
[2] there is shown a first embodiment of the present invention, it is a perspective view showing the configuration of a roll coupling.
[3] there is shown a second embodiment of the present invention, it is a cross-sectional view showing the configuration of a rolling mill of rotating shaft coupling mechanism.
FIG. 4 is a longitudinal sectional perspective view showing a conventional example and showing a configuration of a rotating shaft coupling mechanism of a rolling mill.
FIG. 5 is a sectional view in the axial direction showing a configuration of a rotary shaft coupling mechanism of a rolling mill, showing a conventional example.
FIG. 6 is a cross-sectional view showing a conventional example and showing a configuration of a rotating shaft coupling mechanism of a rolling mill.
FIG. 7 is a cross-sectional view showing a conventional example and showing how a roll coupling is deformed.
FIG. 8 shows another conventional example and is a cross-sectional view showing a configuration of a rotating shaft coupling mechanism of a rolling mill.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roll 1a Oval connection part 1b Plane part 2 Roll coupling 2a Oval inner hole 2b Plane part 2c Notch surface 3 Sleeve with hydraulic expansion chamber

Claims (3)

円周状の外周面の両側を軸心に沿う互いにほぼ平行な平面で削り取った形状の横断面小判形に形成された回転軸の軸端部の小判形連結部を、この小判形連結部よりも少し大きい横断面小判形に形成された被連結部材の筒状部の小判形内孔に挿入し、この被連結部材の筒状部の外周に外嵌された押圧装置の内周径を全体に収縮させることにより、筒状部を圧迫して小判形内孔を回転軸の小判形連結部に圧接し固定する回転軸連結機構において、
被連結部材の筒状部における小判形内孔の平面部の外周側に位置する外周面の全部又は一部と押圧装置の内周面との間の隙間を、この小判形内孔の円周部の外周側に位置する外周面と押圧装置の内周面との間の隙間よりも大きく形成し、
更に、前記押圧装置の内周面が真円の円周面であり、被連結部材の筒状部の外周面が、この押圧装置の内周面よりもわずかに径の小さい真円の円周面に沿い、かつ、前記小判形内孔の平面部の外周側に位置する外周面の一部又は全部のみがこの円周面よりも内側に引き込んだ平面又は曲面に形成されたことを特徴とする回転軸連結機構。
The oval connecting part at the shaft end of the rotating shaft formed in a cross-sectional oval shape with both sides of the circumferential outer surface cut off by planes substantially parallel to each other along the axis is from this oval connecting part. The inner diameter of the pressing device that is externally fitted to the outer periphery of the cylindrical portion of the connected member is inserted into the oval inner hole of the cylindrical portion of the connected member that has a slightly larger cross sectional shape. In the rotary shaft coupling mechanism that compresses the cylindrical portion and presses and fixes the oval inner hole to the oval coupling portion of the rotary shaft,
The gap between the whole or a part of the outer peripheral surface located on the outer peripheral side of the flat portion of the oval inner hole in the cylindrical portion of the connected member and the inner peripheral surface of the pressing device is the circumference of the oval inner hole. Forming larger than the gap between the outer peripheral surface located on the outer peripheral side of the part and the inner peripheral surface of the pressing device,
Further, the inner peripheral surface of the pressing device is a perfect circular circumferential surface, and the outer peripheral surface of the tubular portion of the connected member is a perfect circular circumference slightly smaller in diameter than the inner peripheral surface of the pressing device. A part or all of the outer peripheral surface located along the surface and on the outer peripheral side of the flat portion of the oval inner hole is formed into a flat surface or a curved surface drawn inward from the circumferential surface. rotary shaft coupling mechanism.
前記被連結部材の筒状部の外周面における内側に引き込んだ平面又は曲面が、小判形内孔の平面部の両端部の外周側に位置する外周面にのみ形成されたことを特徴とする請求項に記載の回転軸連結機構。The plane or curved surface drawn inwardly on the outer peripheral surface of the cylindrical portion of the connected member is formed only on the outer peripheral surface located on the outer peripheral side of both ends of the flat portion of the oval inner hole. Item 2. The rotating shaft coupling mechanism according to Item 1 . 前記被連結部材の筒状部の外周面における内側に引き込んだ平面又は曲面が、小判形内孔の平面部の中央部の外周側に位置する外周面にのみ形成されたことを特徴とする請求項に記載の回転軸連結機構。The flat surface or curved surface drawn inwardly on the outer peripheral surface of the cylindrical portion of the connected member is formed only on the outer peripheral surface located on the outer peripheral side of the central portion of the flat portion of the oval inner hole. Item 2. The rotating shaft coupling mechanism according to Item 1 .
JP31879199A 1999-11-09 1999-11-09 Rotating shaft coupling mechanism Expired - Fee Related JP3928912B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31879199A JP3928912B2 (en) 1999-11-09 1999-11-09 Rotating shaft coupling mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31879199A JP3928912B2 (en) 1999-11-09 1999-11-09 Rotating shaft coupling mechanism

Publications (2)

Publication Number Publication Date
JP2001140915A JP2001140915A (en) 2001-05-22
JP3928912B2 true JP3928912B2 (en) 2007-06-13

Family

ID=18102995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31879199A Expired - Fee Related JP3928912B2 (en) 1999-11-09 1999-11-09 Rotating shaft coupling mechanism

Country Status (1)

Country Link
JP (1) JP3928912B2 (en)

Also Published As

Publication number Publication date
JP2001140915A (en) 2001-05-22

Similar Documents

Publication Publication Date Title
JP3928912B2 (en) Rotating shaft coupling mechanism
JPS62224507A (en) Pipe support method
JP3925891B2 (en) Rotating shaft coupling mechanism
JP3852046B2 (en) Rotating shaft coupling mechanism
JPS591493B2 (en) Cylinder cylinder size
JPH10291107A (en) Chuck
JP4200594B2 (en) Cylinder shaft machining method and cylinder shaft
JP7089456B2 (en) Processing equipment
JP2001090741A (en) Rotation shaft connecting mechanism
JPH0154128B2 (en)
JP3795260B2 (en) Modified cylindrical shaft machining method and modified cylindrical shaft
JPH0596552U (en) Fastening device for shaft and rotating body with retaining ring
JP2585351Y2 (en) Rolling roll
JP4310089B2 (en) Roller bearing
KR100390407B1 (en) hinge-assembly
JP5198396B2 (en) Spinning method
JPH10156450A (en) Caulking method and caulking device
JP2020189335A5 (en)
JPH04105720A (en) Manufacture of crown roller
JPH0594520U (en) Retaining ring
JPH0551382B2 (en)
JP3415423B2 (en) Shaft coupling shaft fastening device
JP4252006B2 (en) Piston ring outer peripheral curved surface processing equipment
JPH10288226A (en) Cage for constant velocity joint
JP3056707U (en) Shaft stop mechanism

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060817

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060905

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061012

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070228

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070302

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees