JP3690885B2 - Integral molding method, equipment and objects for bearing retaining brackets - Google Patents

Description

【０００１】
【産業上の利用分野】
本発明は、機能商品であるシリンダまたはショックアブソーバ等を構成する容器の内壁に沿い摺動し、該容器の開放端部から突出する部材を支持するために、前記容器の開放端部を閉塞する金具の、少なくとも一つに挿入する軸受の脱落防止手段を備えた軸受の抜け止め付金具の一体成形方法と装置と物に関する。
【０００２】
【従来の技術】
容器の開放端部を閉塞する金具を製作するために、古くは焼結合金により形作りした後、内外に装着する他の部品との嵌合や接合部分を刃物等による切削加工で整えたが、現在では前記金具の大部分の加工は、板状金属材料を使用しプレスにより成形するようになったが、軸受を圧入する嵌合部分のみは、依然として刃物による切削加工で整形される。
【０００３】
【発明が解決しようとする課題】
低コストの部品を製造するためには、好ましくは素材としての鋼・ステンレス鋼・クラッド鋼等の板状金属材料から完成品に至る間の全加工を、休みなく連続した工程にまとめた装置とすることであるが、加工内容の異なる工程が混在する場合には、しばしば連続性の維持が難しく非連続とならざるを得ない。
【０００４】
容器の開放端部を閉塞する金具に、金属または非金属等の材質でなる軸受を挿入する必要のある部品の場合、該軸受が使用中に所定の位置から移動しないことを必要とするが、前記軸受に作用する力が静的である場合は、前記金具に前記軸受を圧入するだけでも対応できるが、この程度では動的な力（特に衝撃的な力）には対応できず、前記軸受は容易に所定の位置から脱落し、部品の機能を失うことがしばしば起こる。
【０００５】
従って、軸受の固定は圧着以外に充分な抜け止めを必要とするが、プレスでは必要な高さの成形ができなかったため、この部分の成形には刃物を用いた切削工程が必要になるが、力を加えて成形するプレス工程に較べて、切削工程に使用する機械の種類・形状等が大きく異なり直接両工程を結び付けることが難しく、工程は非連続と成らざるを得なかった。
【０００６】
また非連続工程の場合は、段取り・待機等に費やされる無効時間と作業内容の違いに起因する作業員の増加が避けられず、必然的にコスト引き下げの大きな障害となり、特に競争の激しい車両業界では部品に対する価格の引き下げ要請が強く、該業界を市場とするショックアブソーバ等の機能商品の製造業界にとり、一日も早く解決すべき課題である。
【０００７】
【課題を解決するための手段】
本発明は、上記の課題を解決するため、板状金属材料を素材として所要寸法の切り出しに始まり、完成品である軸受の抜け止め付金具とするまでを、一貫した連続製造ライン（トランスファープレスまたは順送プレスとも呼ばれる）により生産する方法と装置と物に係る技術を開示する。
【０００８】
容器の内壁に沿い摺動し、該容器の開放端部から突出する部材を支持するために、前記容器の開放端部を閉塞する金具の、少なくとも一つに挿入する軸受の脱落防止手段を付与せしめるために、下記の▲１▼から▲８▼でなる各プレスにより、
▲１▼板状で部品の成形に必要な寸法の加工素材（２）を採取し、
▲２▼加工素材（２）に突出部（７）を形成し、更に拡大成長して突出部（７Ａ）
とする絞り、
▲３▼更に拡大成長した突出部（７Ａ₁ ）の内外を細かく成形し突出部（７Ａ₂ ）
に成形し、
▲４▼突出部（７Ａ₂ ）に孔（８）を開け、フランジを成形し、
▲５▼フランジを内側に屈曲させるフランジ曲げを行い、
▲６▼天井（６Ａ₂ ）を抜き突出部（７Ａ₃ ）とし、
▲７▼天抜き部分（６Ａ₃ ）を円筒状に拡張し、
▲８▼端（１０）を揃え面取り端（１０Ａ）を形成する面押し、
を組合せて構成した連続成形に加えて、
▲９▼加工材料の内周面の一部を削ぎ落とすように絞り出して抜け止めとする挿入
した軸受の脱落防止用手段を、
新しく付加して連続成形したことを特徴とする軸受の抜け止め付金具の一体成形方法と該方法を具現する連続成形工程からなる成形装置と、該装置による成形物である。
【０００９】
【発明の実施の形態】
本発明は、刃物による加工工程を全く含まず、剪断加工・曲げ加工・絞り加工等の組合せ金型を使用したプレス群から成る一貫した連続製造ラインであり、該ラインで生産した充分な高さの軸受の抜け止め付金具１〔図１（Ａ，Ｂ）参照〕と金具１Ａ〔図２（Ａ，Ｂ）参照〕であり、従来方法に較べ本発明による加工方法は大幅なコスト引下げをもたらした。
【００１０】
表１は、本発明になる金具の製造工程を示すフローシートで、図１（Ａ）の金具１に備えた環状の突起による抜け止めも、図２（Ａ）の金具１Ａに備えた小突起による抜け止めも、〔０００８〕項に述べた▲９▼の工程において形成されるが、同工程に使用される両者の組金型は、上・下金型の先端形状が相違する以外は大きな差異はなく、其処に至る▲１▼から▲８▼の工程も従来方法と同じである。
【００１１】
【表１】

【００１２】
本発明になる金具の加工方法は、上述のように全ての加工をプレスに依存するもので、該金具の内面に挿入・圧着される軸受に必要な高さの抜け止めも、特に開発された組金型により成形加工されるので、動的な力が加わっても軸受を内蔵する前記金具を組み込んだ製品の機能を損なうようなことがない。
【００１３】
加工素材が各種の加工を受けて形状が変化した半製品（以下加工材料と表示）への、本発明による抜け止め加工工程の適用は、加工材料の最終加工段階とするのが好ましく、この状態では前記抜け止め加工用組金型と加工材料を組合せた際に、両者の間の遊びが最小となり良好な抜け止めを成形出来る。
【００１４】
使用される抜け止め加工用組金型は、少なくとも二層の押型が同心円状に密接・嵌合・配置された上・下金型で構成され、且つ上・下の対応する夫々の組合せ押型が加工材料の内・外形状に密接し、金型の移動始点から加工材料の必要部分のみを、該金型により削ぎ落すように絞り出し、前記金型の移動終点において抜け止めの成形を完了するように構成されているので、加工材料の既加工の端部や内・外の嵌合部分を、抜け止め加工の際に傷つけることはない。
【００１５】
金具の軸受との嵌合部分に備えた抜け止めの形状は、内周に沿う環状の略四辺形に近い断面の突起であることが多いが〔図１（Ａ，Ｂ）参照〕、少なくとも内周に沿う一個の小突起でも充分な効果が得られる場合もあり、図２（Ａ，Ｂ）では四個の場合を示している。
この場合削ぎ落す部分は、軸受の装着位置である前記嵌合部分に連接する非嵌合部分が主な対象になる。
【００１６】
抜け止めが環状で四辺形状断面の突起を対象とするときは、使用する組金型の構成材である上・下型の内押型各先端形状は平坦とし、特に上内押型先端の外径をやや小さめの同心円とした段部を設けると加工材料への成形力の伝達もよく、成形終点では該先端同士は、前記突起の軸方向厚みに相当した微小隙間を保持することで環状で断面四辺形状の突起が形成できるが、前記微小隙間の上内押型先端側部分に抜け止めの内径に相当した直径で該抜け止めの厚みより薄い小段差を設けて環状部成形の助けとしてもよく、小突起の場合は下内押型に突起の幅に相当した爪を持たせ、成形終点では先端同士を接触させずにやや広めの隙間を与えると突起断面は三角形状になる。
【００１７】
組金型は使用の際に、上・下型の何れか一方が可動で有ればよいが、少なくとも二層の押型により前記上・下型は夫々構成されているので、特に軸受の装着部分を形成する何れか一方の型の内押型が微調整機能を備えた単独移動可能型であることが好ましく、また落下物の除去・清掃や取扱いの面からは、下型の先端形状は凸であることが望ましい。
【００１８】
本発明の一体成形方法と装置と物が持つ作用は、金具に挿入・圧着する軸受に必要とする高さの抜け止めを提供することであり、該抜け止めにより前記金具に動的な力が働いても、内蔵する前記軸受の脱落を防止するので、前記金具を装着した部品の機能を損なうことはない。
【００１９】
【実施例１】
図１（Ａ，Ｂ）の環状部の断面が略四辺形の突起をなす金具１の製造工程を表１のフローシートに示し、加工素材２が各製造工程に従い形状が変化する遷移の様子を、工程符号順に図３（Ａ〜Ｋ）の各断面図で示し説明する。
金具１の加工は、ロール状に巻かれた薄板または一定のサイズに裁断された薄板を原材料として、図３（Ａ）に示す該材料から外径６４ｍｍの円形状に打ち抜いた加工素材２とする▲１▼の工程（以下表１の表示を省略）から始まる。
【００２０】
加工素材２は▲２▼の工程において、図３（Ｂ）に示すように第１絞りで縁３を持つ底４から胴５と天井６でなる浅い突出部７となり、図３（Ｃ）では第２絞りにより突出部７を底４Ａで胴５Ａと天井６Ａでなる深めの突出部７Ａとなり、図３（Ｄ）では第３絞りにより突出部７Ａは底４Ａ₁ で胴５Ａ₁ ，５Ｂと天井６Ａ₁ と段６Ｂでなる二段形状の突出部７Ａ₁ となる。
【００２１】
▲３▼の工程では突出部７Ａ₁ に、成形部分に必要精度を付与する成形絞りが行われ、図３（Ｅ）に示すように胴５Ａ₂ ，５Ｂ₁ ，５Ｃと天井６Ａ₂ と段６Ｂ₁ ，６Ｃとからなる突出部７Ａ₂ に成形され、この段階で成形部分の直径精度は１／１０〜２／１００ｍｍ程度に、また隅部分の曲率半径精度は最小３／１０ｍｍ程度にまで高められる。
【００２２】
▲４▼の工程では図３（Ｆ）に示すように、突出部７Ａ₂ の胴５Ａ₂ の円周上に、少なくとも一個の小孔８を貫通せしめ、縁部分を外径４７．５ｍｍに揃えるフランジ切り加工により底４Ａ₂ と縁３Ａに加工し、
▲５▼の工程では図３（Ｇ）に示すように、突出部７Ａ₂ の底４Ａ₂ を突出部側に二段に折曲げて、底４Ａ₃ と傾斜壁４Ｂと垂直壁４Ｃに加工する。
【００２３】
▲６▼の工程では図３（Ｈ）に示すように、突出部７Ａ₂ の天井６Ａ₂ に天抜きと称する打ち抜き作業で孔９付の天井６Ａ₃ でなる突出部７Ａ₃ とし、
▲７▼の工程では図３（Ｉ）に示すように、突出部７Ａ₃ はバーリング加工により孔９付天井６Ａ₃ 部分を内面より加圧して外側に押し拡げ、図３（Ｅ）の突出部７Ａ₂ の加工の際に形成した胴５Ａ₂ ，５Ｂ₁ ，５Ｃに沿うように成形し、必要な嵌合精度に再調整した胴５Ａ₃ ．５Ｂ₂ ，５Ｃ₁ とし、胴５Ｃ₁ は展開されて端部１０を持つ円筒状に姿を変える。
【００２４】
▲８▼の工程では図３（Ｊ）に示すように、胴５Ｃ₁ の端部１０を面押し加工により揃え、内面面取りして端部１０Ａとする成形がなされるが、
以上の▲１▼から▲８▼に至る工程は全てプレス加工で、従来方法でも成形可能な範囲であるが、ここまでの加工では軸受材料を図３（Ｊ）の胴５Ｃ₁ 内面に挿入・圧着しても、軸受材料の抜け止めが充分に成形できていないために、次の工程で切削機械を使用して胴５Ｃ₁ の内面を削り胴５Ｃ₂ として胴５Ｂ₃ との間に抜け止めを形成していた〔図３（Ｋ）相当〕。
【００２５】
本発明は、切削機械を使用する代わりにプレスを用いて抜け止めを成形する加工方法で、▲９▼の工程が該当しこの結果プレスのみで連続加工ラインの編成・構築が初めて可能となったもので、
▲９▼の工程では、図３（Ｊ）の胴５Ｂ₂ 内面を削ぎ取るように胴５Ｃ₁ 側に押し出し、図３（Ｋ）に示すように胴５Ｃ₂ と胴５Ｂ₃ の間に環状で断面が略四辺形に近い突起１０Ａを備えた金具１を形成する。
【００２６】
図４（Ａ〜Ｄ）は、▲９▼の工程での組金型１５の動きを段階的に示した加工遷移図で以下順を追って説明する。
図４（Ａ）は成形過程にある加工材料が下型２１上にセットされ、上型１６の位置は成形開始前の状態を示し、下型２１は内押型２３の周りに中押型２４と外押型２５とが同心円をなすように下型台２２上に設置され、外側の型に作用する成形時の力がすべて内押型２３の基部に集まるように構成されている。
【００２７】
上金型１６は、内押型１８の周りに中押型１９と外押型２０とが同心円をなすように上型台１７の下面に吊り下げられ、外押型２０に掛かる成形時の力はすべて中押型１９の基部に集まるように構成されているが、内押型１８のみは該型の上方に取付けた油圧・空圧・電気等を動力源とする駆動装置（図示せず）により、中押型１９の内面に沿い軸方向への摺動が可能である。
【００２８】
上・下型の各構成材は、内押型１８，２３・中押型１９，２４・外押型２０，２５の各組合せが、それぞれ対応する関係にあると共に、内押型１８，２３が抜け止め成形を主目的とするのに較べ、中押型１９，２４・外押型２０，２５の主目的は、加工材料を固定し本工程で加工を受ける加工材料の既成形部分の精度を維持することである。
【００２９】
また加工材料を下型２１にセットした状態は、該加工材料の胴５Ａ₃ 内面の一部に中押型２４の一部である先端が接し、内押型２３の先端の縁２３Ａは、前記加工材料の胴５Ｂ₂ と段６Ｂ₁ の各内面により形成された隅部内側の曲面１２に接している程度に過ぎない。
尚、加工材料の下型２１へのセットは自動移載機構により行われるが、本願とは直接関係なく説明は省略する。
【００３０】
図４（Ｂ）は上・下型１６，２１が接近し加工対象物の加工を開始した状態を示し、この段階で上型１６の各構成材は移動中に、中押型１９と外押型２０は加工材料の外面と接合し、内押型１８は単独移動により胴１８Ｂと段１８Ｃが加工材料の胴５Ｃ₂ 内面と端部１０Ａに密着し、先端１８Ａは下型２１により押し出されてくる加工材料から成形圧力を受け止め胴５Ｃ₂ に影響が及ばないように阻止する働きをする。
【００３１】
この動作により上型１６は加工材料に密着し、上型１６が更に下降する状態になると初めて下型２１による抜け止め成形加工が始まり、内押型２３の先端の縁２３Ａは加工材料の胴５Ｂ₂ の内面を、隅部の曲面１２側より削ぎ落とすように胴内面の絞り出しを始めるが、この段階では下型２１を構成する全押型と加工材料は未だ完全には接していない。
【００３２】
図４（Ｃ）は図４（Ｂ）のａ部分の拡大断面図で、下型２１の内押型２３の先端が胴内面の一部を下側から上側に向かって絞り出している状態で、この組金型１５による抜け止め加工は、加工の初期段階では上型１６の移動による成形圧力が、全て下金型２１の内押型２３に集中され、抜け止め加工は内押型２３により進められることを示している。
【００３３】
図４（Ｄ）は上・下型１６．２１が最も接近し加工材料の加工が完了した段階を示し、この時上・下型１６．２１を構成する各押型と加工材料は完全に嵌合または接合した状態になり、上型１６の内押型胴１８Ｂを軸受の装着に必要な長さとし、段１８Ｃで加工材料の端部１０Ａと接すると、下型２１の内押型２３による加工材料の胴５Ｂ₂ 内面の絞り出しは、内押型先端１８Ａにより背面から規制されるので、抜け止め用環状突起１１が成形される。
【００３４】
こうして上型２１が下降し終わると、内面に環状で断面が四辺形に近い抜け止め用突起１１を備えた金具１が出来上がるが、この場合上内押型先端１８Ａ面に抜け止めの内径に相当した直径で該抜け止めの厚みより薄い段差を付加し環状部の成形に役立たせてもよく（図示せず）、この突起１１が効果を発揮するためには、軸方向の厚みＴを軸受の装着部分の長さＬの３〜２０％の範囲、好ましくは５〜１０％の範囲とし、半径方向の突出代Ｈを軸受の装着部分の内径Ｄの２〜８％の範囲、好ましくは４〜６％の範囲から選択する。
【００３５】
本発明は、上記説明のように抜け止め用突起１１の成形を、従来は不可能であったプレスによる加工で実現したので、加工材料２から金具１に至る全工程を連続した製造ラインとして編成することを可能とした。
その結果、金具１の生産コストは従来方法に較べて約２０％低下し、併せて金具１に基づくクレームの発生も低下した。
【００３６】
【実施例２】
表１のフローシートに従い、図２（Ａ，Ｂ）に示した内周面に四個の小突起を有する金具１Ａの製造工程を説明する。
▲９▼の工程に使用される組金型は実施例１と較べ、上・下型を構成する内押型の何れか先端形状が相違するだけでなので、相違点についてのみ詳細な説明をし、その他の説明は実施例１を参照されたい。
【００３７】
金具１Ａの▲１▼〜▲９▼に間工程に対応する加工材料の形状変化は、図３（Ａ〜Ｊ）間の遷移図と同じで、図３（Ｋ）との相違点のみを図５（Ａ，Ｂ，Ｃ）を使用して説明する。
また成形の開始から終了前までの上・下型の動作も、図４（Ａ，Ｂ）の内押型２３が図５では４３に代わる以外に殆ど変わりなく実施例１の説明を参照されたい。
【００３８】
図５（Ａ）は成形を終えた実装済の組金型３５で、図４（Ｄ）の実装済の組金型１５とは、下型の内押型４３の先端４３Ａの面形状が平坦でなく、図５（Ｂ）に示すように該先端面に小突起の数に対応した爪４３Ｂが形成されている点が相違する以外は同じ構造で、上・下型の移動に伴って爪４３Ｂが加工材料の内面を筋状に削ぎ落とすように押し出し小突起１１Ａを成形するもので、図５（Ａ）では先端４３Ａの爪４３Ｂの有無により成形状態の違いを示している。
【００３９】
上型の内押型１８の先端１８Ａと下型の内押型４３の先端４３Ａとの隙間を広めに採ることにより、小突起１１Ａの側面形状を三角形とすることが出来るが、実施例１のように隙間を狭くすると、成形部分が爪４３Ｂの幅以上に膨らみ抜け止めの形が崩れ弱くなるので好ましくない。
また爪４３Ｂの高さｈを充分に採っておくと、成形の際に加工を要しない部分の面を傷つける心配がなく、小突起の数も前記爪数の増減により任意に選択することが出来る。
【００４０】
【効果】
本発明の軸受の抜け止め付金具の一体成形方法と装置と物は下記の効果をもたらした。
▲１▼プレスにより抜け止め部分を成形できるようになったので、従来方法では使用せざるをえなかった異機種の切削加工機械を必要としなくなったので、プレスのみによる連続加工工程の編成が可能になつた。
▲２▼連続加工工程の編成により、従来方法では成し得なかった加工コストの大幅削減ができた。
▲３▼プレスのみの連続加工工程で生産した軸受の抜け止め付金具の精度は、切削加工を併用した従来方法による製品と較べても品質上全く遜色がなかった。
▲４▼組金具が同心円状に積層された複数の押型で構成されているので、該押型先端部分を加工材料の形状に合わせる加工が容易になった。
【図面の簡単な説明】
【図１】 本発明により生産した軸受の抜け止めが、環状で断面四辺形状の突起をなす成形物で、（Ａ）図は断面、（Ｂ）図は底面である。
【図２】 本発明の方法と装置で生産した内周上に配置した４個の小突起でなる軸受の抜け止め付成形物で、（Ａ）図は断面、（Ｂ）図は底面である。
【図３】 形状の遷移で（Ａ）図は加工素材、（Ｋ）図は完成品、（Ｂ〜Ｊ）は中間の過程図である。
【図４】 実施例１に於ける抜け止め成形用金型の動作の遷移を示し、（Ａ）図は成形開始前の断面、（Ｂ）図は成形途中の断面、（Ｃ）図は（Ｂ）図のａ部分の拡大断面、（Ｄ）図は成形完了時の断面を示す。
【図５】 実施例２の抜け止め成形用金型の動作の遷移を示し、（Ａ）図は成形完了時の断面で、下型の内押型先端の爪の有無により抜け止めが成形されている部分と成形されていない部分〔（Ｂ）のｃ−ｃ断面に相当〕を示し、（Ｂ）図は下型の先端の正面、（Ｃ）図は側面である。
【符号の説明】
１，１Ａ 金具
２ 加工素材
５Ａ₃ ，５Ｂ₃ ，５Ｃ₂ 胴
１０Ａ 端
１１，１１Ａ 突起
１５，３５ 組金型
１６，２１ 上・下型
１８，２３ 上・下内押型
１９，２４ 上・下中押型
２０，２５ 上・下外押型
４３ 下内押型
４３Ｂ 爪[0001]
[Industrial application fields]
The present invention closes the open end of the container in order to support a member that slides along the inner wall of the container that constitutes a functional product such as a cylinder or shock absorber, and projects from the open end of the container. The present invention relates to a method, an apparatus, and an object for integrally forming a metal fitting for retaining a bearing provided with means for preventing the bearing from being inserted into at least one of the metal fittings.
[0002]
[Prior art]
In order to produce a metal fitting that closes the open end of the container, in the old days, after forming with sintered alloy, the fitting with other parts to be mounted inside and outside and the joint part were arranged by cutting with a blade etc. At present, most of the metal fittings are processed by press using a plate-shaped metal material, but only the fitting portion for press-fitting the bearing is still shaped by cutting with a blade.
[0003]
[Problems to be solved by the invention]
In order to manufacture low-cost parts, it is preferable to have an apparatus that integrates all processes from plate metal materials such as steel, stainless steel, and clad steel as raw materials to finished products in a continuous process without breaks. However, when processes with different processing contents coexist, it is often difficult to maintain continuity and must be discontinuous.
[0004]
In the case of a part that needs to insert a bearing made of a material such as metal or non-metal into the metal fitting that closes the open end of the container, it is necessary that the bearing does not move from a predetermined position during use. When the force acting on the bearing is static, it can be dealt with by simply press-fitting the bearing into the metal fitting, but at this level, it cannot deal with dynamic force (especially shocking force). Often fall out of place and lose the function of the part.
[0005]
Therefore, fixing the bearing requires a sufficient stopper other than crimping, but because the press could not be molded at the required height, this part requires a cutting process using a blade, Compared with the press process in which force is applied to form, the type and shape of the machine used in the cutting process are greatly different, making it difficult to directly connect the two processes, and the process has to be discontinuous.
[0006]
Also, in the case of discontinuous processes, an increase in workers due to the difference between the invalid time spent on setup and standby and work contents is inevitable, which inevitably becomes a major obstacle to cost reduction, especially in the highly competitive vehicle industry However, there is a strong demand for price reduction of parts, and this is a problem that should be solved as soon as possible for the manufacturing industry of functional products such as shock absorbers in the industry.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention starts from cutting out the required dimensions using a plate-shaped metal material as a raw material, and continues to a continuous continuous production line (transfer press or Disclosed is a method, an apparatus, and a technique related to a product produced by a progressive press).
[0008]
In order to support a member that slides along the inner wall of the container and protrudes from the open end of the container, a means for preventing the bearing from being inserted is inserted into at least one of the metal fittings that close the open end of the container. In order to make it happen, the following presses (1) to (8)
(1) Collect the processing material (2) that is plate-shaped and has the necessary dimensions for molding the part.
(2) Protruding part (7) is formed on processed material (2), and further expanded to projecting part (7A)
The aperture,
( ₃ ) The projection (7A ₂ ) is formed by finely molding the inside and outside of the projection (7A ₁ ) that has been further expanded.
Molded into
(4) Open the hole (8) in the projecting part (7A ₂ ), mold the flange,
(5) Perform flange bending to bend the flange inward,
(6) Pull out the ceiling (6A ₂ ) to make the protrusion (7A ₃ ).
(7) Expand the ceiling part (6A ₃ ) into a cylindrical shape,
(8) Aligning the end (10) and pressing the surface to form a chamfered end (10A),
In addition to continuous molding composed of
(9) A means for preventing the inserted bearing from falling off, which is squeezed out so as to scrape off a part of the inner peripheral surface of the work material,
A method of integrally forming a bearing retaining metal fitting, which is newly added and continuously molded, a molding apparatus comprising a continuous molding process embodying the method, and a molded product by the apparatus.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is a continuous continuous production line consisting of a press group using a combination die for shearing, bending, drawing, etc., which does not include any machining process with a blade, and has a sufficient height produced by the line. The bearing mounting bracket 1 (see FIGS. 1 (A, B)) and the bracket 1A (see FIGS. 2 (A, B)), the machining method according to the present invention significantly reduces the cost compared to the conventional method. It was.
[0010]
Table 1 is a flow sheet showing the manufacturing process of the metal fitting according to the present invention, and the small protrusion provided in the metal fitting 1A in FIG. 2A is also used to prevent the annular protrusion provided in the metal fitting 1 in FIG. Is also formed in the process of (9) described in the paragraph [0008], but the assembled molds used in the process are large except that the tip shapes of the upper and lower molds are different. There is no difference, and the steps (1) to (8) up to that point are the same as the conventional method.
[0011]
[Table 1]

[0012]
The processing method of the metal fitting according to the present invention depends on the press for all the processing as described above, and the height prevention necessary for the bearing inserted and crimped on the inner surface of the metal fitting has been developed in particular. Since the molding is performed by the mold assembly, even if dynamic force is applied, the function of the product incorporating the metal fitting incorporating the bearing is not impaired.
[0013]
The application of the retaining process according to the present invention to a semi-finished product whose shape has changed due to various types of processing (hereinafter referred to as processing material) is preferably the final processing stage of the processing material. Then, when combining the above-described mold assembly for retaining processing and the processing material, play between the two is minimized and a satisfactory retaining can be formed.
[0014]
The retainer mold used is composed of upper and lower molds in which at least two layers of molds are closely, fitted and arranged concentrically, and corresponding upper and lower combined molds are provided. Close to the inner and outer shapes of the work material, squeeze out only the necessary part of the work material from the movement start point of the mold so that it is scraped off by the mold, and complete the molding of the stopper at the movement end point of the mold Therefore, the already processed end portions and inner / outer fitting portions of the processing material are not damaged during the retaining process.
[0015]
The shape of the retainer provided in the fitting portion of the metal fitting with the bearing is often a projection having a cross section close to an annular substantially quadrilateral along the inner circumference (see FIGS. 1A and 1B), but at least the inner In some cases, a sufficient effect can be obtained with one small protrusion along the circumference. FIG. 2A and FIG. 2B show four cases.
In this case, the part to be scraped off is mainly a non-fitting part connected to the fitting part, which is the mounting position of the bearing.
[0016]
When the retainer is annular and has a quadrilateral cross-section projection, the top and bottom of the inner and bottom molds, which are the components of the mold used, are flat, and the outer diameter of the top of the upper and inner molds is particularly flat. Providing a slightly smaller concentric step provides good transmission of the forming force to the work material. At the end of the forming, the tips are annular and have a four-sided cross-section by holding a minute gap corresponding to the axial thickness of the protrusion. Protrusions with a shape can be formed, but a small step that is a diameter corresponding to the inner diameter of the retainer and thinner than the retainer thickness may be provided at the top end portion of the upper inner mold of the minute gap to assist the annular portion molding. In the case of a protrusion, if the nail corresponding to the width of the protrusion is held on the lower inner mold, and a slightly wider gap is given without contacting the tips at the end point of the forming, the cross section of the protrusion becomes triangular.
[0017]
When using the assembled mold, it is sufficient that either the upper or lower mold is movable. However, since the upper and lower molds are configured by at least two layers of the molds, particularly the bearing mounting portion. It is preferable that either one of the inner pressing molds forming the mold is a single movable mold having a fine adjustment function, and the tip of the lower mold has a convex shape from the viewpoint of removal / cleaning and handling of falling objects. It is desirable to be.
[0018]
The function of the integrally molding method, apparatus and object of the present invention is to provide a retaining height of a height required for a bearing to be inserted and crimped to the metal fitting, and the retaining force causes a dynamic force to be applied to the metal fitting. Even if it works, the built-in bearing is prevented from falling off, so that the function of the part to which the metal fitting is attached is not impaired.
[0019]
[Example 1]
The manufacturing process of the metal fitting 1 in which the cross-section of the annular part of FIG. 1 (A, B) forms a substantially quadrangular protrusion is shown in the flow sheet of Table 1, and the state of the transition in which the shape of the workpiece 2 changes according to each manufacturing process. In the order of the process codes, the cross-sectional views of FIGS.
The metal fitting 1 is processed by using a thin plate wound in a roll shape or a thin plate cut into a certain size as a raw material, and forming the processed material 2 punched into a circular shape having an outer diameter of 64 mm from the material shown in FIG. The process starts from step (1) (hereinafter, the display in Table 1 is omitted).
[0020]
In the process (2), the processed material 2 becomes a shallow protrusion 7 consisting of the body 5 and the ceiling 6 from the bottom 4 having the edge 3 at the first diaphragm as shown in FIG. 3 (B). Due to the second diaphragm, the projection 7 becomes a deeper projection 7A consisting of the bottom 5A and the body 5A and the ceiling 6A. In FIG. 3D, the third diaphragm restricts the projection 7A from the bottom 4A ₁ to the trunks 5A ₁ and 5B and the ceiling. A projecting portion 7A ₁ having a two-stage shape composed of 6A ₁ and a step 6B is obtained.
[0021]
In the step (3), the projecting portion 7A ₁ is subjected to molding drawing to give the necessary accuracy to the molded portion, and as shown in FIG. 3E, the cylinders 5A ₂ , 5B ₁ , 5C, the ceiling 6A ₂ and the step 6B. ₁ and 6C are formed into the protruding portion 7A ₂ , and at this stage, the diameter accuracy of the molded portion is increased to about 1/10 to 2/100 mm, and the curvature radius accuracy of the corner portion is increased to a minimum of about 3/10 mm. .
[0022]
In the step (4), as shown in FIG. 3 (F), at least one small hole 8 is passed through the circumference of the body 5A ₂ of the projecting portion 7A ₂ so that the edge portion has an outer diameter of 47.5 mm. Processing to bottom 4A ₂ and edge 3A by flange cutting,
▲ 5 ▼ of as shown in FIG. 3 (G) in step, the bottom 4A ₂ of the projecting portion 7A ₂ by bending the two stages to the protrusion side, processing the bottom 4A ₃ the inclined wall 4B and the vertical wall 4C .
[0023]
In step (6), as shown in FIG. 3 (H), the ceiling 6A ₂ of the projection 7A ₂ is punched into a projection 7A ₃ made of a ceiling 6A ₃ with a hole 9 by a punching operation called a ceiling.
In the step (7), as shown in FIG. 3 (I), the protruding portion 7A ₃ presses the ceiling 6A ₃ portion with the hole 9 from the inner surface by burring and pushes it outward, and the protruding portion shown in FIG. 3 (E). cylinder 5A formed during the processing of 7A _{2 2,} 5B _1, molded along the 5C, cylinder 5A ₃ was readjusted to the required fitting precision. 5B ₂ and 5C ₁ , and the body 5C ₁ is unfolded and changed into a cylindrical shape having an end 10.
[0024]
▲ 8 ▼ In the step as shown in FIG. 3 (J), aligned by press surface machining an end portion 10 of the cylinder 5C _1, although molding is made to the end portion 10A and the inner surface chamfering,
The processes from ( ₁ ) to (8) above are all press working and can be formed by the conventional method. However, in the processing up to this point, the bearing material is inserted into the inner surface of the cylinder 5C ₁ in FIG. Even if crimping, the bearing material is not sufficiently prevented from coming off, so in the next step, the inner surface of the cylinder 5C ₁ is shaved between the cylinder 5B ₃ as a shaving cylinder 5C ₂ using a cutting machine. [Equivalent to FIG. 3 (K)].
[0025]
The present invention is a processing method in which a retainer is formed by using a press instead of using a cutting machine, and the process (9) is applicable, and as a result, the knitting / construction of a continuous processing line has become possible for the first time only with the press. With
In the step (9), the inner surface of the cylinder 5B ₂ in FIG. 3 (J) is pushed out to the cylinder 5C ₁ side so as to be scraped off, and the cylinder 5C ₂ and the cylinder 5B ₃ are annularly formed as shown in FIG. 3 (K). A metal fitting 1 having a protrusion 10A whose cross section is nearly a quadrangle is formed.
[0026]
4A to 4D are process transition diagrams showing the movement of the mold 15 in the step (9) step by step, and will be described in order.
FIG. 4A shows that the processing material in the molding process is set on the lower mold 21, the position of the upper mold 16 shows a state before the molding starts, and the lower mold 21 is arranged around the inner mold 23 and the intermediate mold 24. It is installed on the lower mold base 22 so as to form a concentric circle with the pressing mold 25, and is configured such that all of the molding force acting on the outer mold gathers at the base of the inner pressing mold 23.
[0027]
The upper mold 16 is suspended from the lower surface of the upper mold base 17 so that the intermediate pressing mold 19 and the outer pressing mold 20 form a concentric circle around the inner pressing mold 18, and all of the molding force applied to the outer pressing mold 20 is the intermediate pressing mold. Although only the inner pressing mold 18 is configured to be gathered at the base of 19, a driving device (not shown) having hydraulic power, pneumatic pressure, electricity, or the like attached above the mold as a power source is used. Axial sliding along the inner surface is possible.
[0028]
Each component of the upper and lower molds has a corresponding relationship with each combination of the inner pressing dies 18, 23, intermediate pressing dies 19, 24, and outer pressing dies 20, 25, and the inner pressing dies 18, 23 are formed to prevent slipping. Compared to the main purpose, the main purpose of the intermediate pressing dies 19 and 24 and the outer pressing dies 20 and 25 is to maintain the accuracy of the preformed portion of the processing material to be processed in this process by fixing the processing material.
[0029]
The state of setting the workpiece to the lower die 21, the cylinder 5A ₃ is a part of the middle mold-pressing 24 on a part of the inner surface the tip of the work material is in contact with the tip edge 23A of the inner press die 23, the workpiece only to the extent that is in contact with the cylinder 5B ₂ and the corner portion inner curved surface 12 formed by the inner surface of the stage 6B ₁ in.
Although the processing material is set on the lower mold 21 by an automatic transfer mechanism, the description is omitted because it is not directly related to the present application.
[0030]
FIG. 4B shows a state in which the upper and lower molds 16 and 21 have approached and machining of the workpiece has been started. At this stage, each component of the upper mold 16 is moving while the intermediate pressing mold 19 and the outer pressing mold 20 are moving. machining material is bonded to the outer surface of the work material, the inner press die 18 cylinder 18B and the step 18C is in close contact with the cylinder 5C ₂ inner surface and the end portion 10A of the workpiece by a single movement, the tip 18A comes extruded by the lower die 21 It acts to stop the receiving cylinder 5C ₂ from receiving the molding pressure from being affected.
[0031]
The upper die 16 in close contact with the workpiece by the operation, the upper die 16 is stopped molding begins omission by first lower mold 21 becomes in a state of further lowered, the leading end edge 23A of the inner press die 23 processed material body 5B ₂ of The inner surface of the cylinder is squeezed out so as to scrape the inner surface from the curved surface 12 side of the corner, but at this stage, the full pressing mold constituting the lower mold 21 and the processing material are not yet completely in contact with each other.
[0032]
FIG. 4C is an enlarged cross-sectional view of a portion of FIG. 4B, and shows a state in which the tip of the inner pressing die 23 of the lower die 21 squeezes a part of the inner surface of the body from the lower side to the upper side. In the retaining process by the assembled mold 15, the molding pressure due to the movement of the upper mold 16 is all concentrated on the inner pressing mold 23 of the lower mold 21 at the initial stage of processing, and the retaining process is advanced by the inner pressing mold 23. Show.
[0033]
FIG. 4 (D) shows the stage where the upper and lower molds 16.21 are closest to each other and the processing of the processing material is completed. At this time, the respective pressing molds constituting the upper and lower molds 16.21 and the processing material are completely fitted. Alternatively, when the inner die 18B of the upper die 16 has a length necessary for mounting the bearing and is brought into contact with the end portion 10A of the workpiece at the step 18C, the barrel of the workpiece by the inner die 23 of the lower die 21 is obtained. Since the squeezing of the inner surface of 5B ₂ is regulated from the back by the inner pressing die tip 18A, the retaining annular protrusion 11 is formed.
[0034]
When the upper die 21 has finished descending, the metal fitting 1 having the retaining protrusion 11 which is annular on the inner surface and has a cross section close to a quadrilateral is completed. In this case, the upper inner die tip 18A surface corresponds to the retaining inner diameter. A step that is smaller in diameter than the thickness of the retaining member may be added to help form the annular portion (not shown). In order for this projection 11 to exert its effect, the axial thickness T is set to the bearing mounting. The length L of the portion is in the range of 3 to 20%, preferably 5 to 10%, and the radial protrusion allowance H is in the range of 2 to 8% of the inner diameter D of the bearing mounting portion, preferably 4 to 6 Select from the range of%.
[0035]
In the present invention, as described above, the formation of the retaining protrusion 11 is realized by processing by a press, which has been impossible in the past, so that all processes from the processing material 2 to the metal fitting 1 are knitted as a continuous production line. Made it possible to do.
As a result, the production cost of the metal fitting 1 was reduced by about 20% compared to the conventional method, and the occurrence of complaints based on the metal fitting 1 was also reduced.
[0036]
[Example 2]
A manufacturing process of the metal fitting 1A having four small protrusions on the inner peripheral surface shown in FIG.
Compared with Example 1, the mold used in the process of (9) is only different in tip shape of any of the inner molds constituting the upper and lower molds, so only the differences will be described in detail. For other explanations, see Example 1.
[0037]
The change in the shape of the work material corresponding to the steps 1) to 9) of the metal fitting 1A is the same as the transition diagram between FIGS. 3A to 3J, and only the differences from FIG. 5 (A, B, C).
The operation of the upper and lower molds from the start to the end of molding is almost the same except that the inner pressing mold 23 in FIGS. 4A and 4B is replaced with 43 in FIG.
[0038]
FIG. 5 (A) shows the assembled mold 35 that has been molded. The assembled mold 15 in FIG. 4 (D) has a flat surface shape at the tip 43A of the inner pressing mold 43 of the lower mold. 5B, the claw 43B has the same structure except that claws 43B corresponding to the number of small protrusions are formed on the tip surface as shown in FIG. 5B. However, the extruded small protrusion 11A is formed so as to cut off the inner surface of the work material in a streak shape. FIG. 5A shows the difference in the formed state depending on the presence or absence of the claw 43B of the tip 43A.
[0039]
By taking a wide gap between the tip 18A of the upper die 18 and the tip 43A of the lower die 43, the side surface shape of the small protrusion 11A can be made triangular, as in the first embodiment. If the gap is narrowed, the molded part will swell beyond the width of the claw 43B, and the shape of the stopper will be lost and weakened.
If the height h of the claw 43B is sufficiently set, there is no fear of damaging the surface of the portion that does not require processing during molding, and the number of small protrusions can be arbitrarily selected by increasing or decreasing the number of the claw. .
[0040]
【effect】
The method, apparatus, and object for integrally forming a retaining bracket for a bearing according to the present invention have the following effects.
(1) Since the press-off part can be formed by pressing, it is no longer necessary to use a different type of cutting machine that had to be used in the conventional method. It became.
(2) The knitting of the continuous machining process has made it possible to greatly reduce machining costs that could not be achieved with conventional methods.
(3) The accuracy of bearing retaining brackets produced in a continuous machining process using only a press was not inferior in terms of quality as compared with products by a conventional method combined with cutting.
(4) Since the assembled metal fitting is composed of a plurality of molds stacked concentrically, it is easy to process the tip of the mold to match the shape of the work material.
[Brief description of the drawings]
FIG. 1 is a molded product in which a bearing produced according to the present invention has a ring-shaped projection having a quadrilateral cross section, (A) is a cross section, and (B) is a bottom surface.
2A and 2B are cross-sectional views of the bearing and a bottom view of FIG. 2B. FIG. 2B is a bottom view of the molded product having four small protrusions arranged on the inner periphery produced by the method and apparatus of the present invention. .
FIG. 3A is a shape transition, FIG. 3A is a processed material, FIG. 3K is a finished product, and FIG. 3B to FIG.
FIGS. 4A and 4B show the transition of the operation of the retainer molding die in Example 1. FIG. 4A is a cross-section before molding, FIG. 4B is a cross-section during molding, and FIG. B) Enlarged cross section of part a in the figure, and FIG.
FIG. 5 shows the transition of the operation of the retaining mold according to the second embodiment. FIG. 5 (A) is a cross-section at the completion of molding, in which the retaining stopper is molded depending on the presence or absence of a claw at the tip of the inner mold of the lower mold. The part which is present and the part which is not molded [corresponding to the cc cross section of (B)] are shown, (B) is the front of the tip of the lower mold, (C) is the side.
[Explanation of symbols]
1, 1A metal fitting 2 Work material 5A ₃ , 5B ₃ , 5C ₂ Body 10A End 11, 11A Protrusion 15, 35 Upper die 16, 21 Upper / lower die 18, 23 Upper / lower inner die 19, 24 Upper / lower middle Mold 20, 25 Upper / lower outer mold 43 Lower inner mold 43B Claw

Claims (9)

容器の内壁に沿い摺動し、該容器の開放端部から突出する部材を支持するために、前記容器の開放端部を閉塞する金具の、少なくとも一つに挿入した軸受の脱落防止手段を付与せしめるために、下記の▲１▼から▲８▼でなる各プレスにより、
▲１▼板状で部品の成形に必要な寸法の加工素材（２）を採取し、
▲２▼加工素材（２）に突出部（７）を形成し、更に拡大成長して突出部（７Ａ）
とする絞り、
▲３▼更に拡大成長した突出部（７Ａ₁ ）の内外を細かく成形し突出部（７Ａ₂ ）
に成形し、
▲４▼突出部（７Ａ₂ ）に孔（８）を開け、フランジを成形し、
▲５▼フランジを内側に屈曲させるフランジ曲げを行い、
▲６▼天井（６Ａ₂ ）を抜き突出部（７Ａ₃ ）とし、
▲７▼天抜き部分（６Ａ₃ ）を円筒状に拡張し、
▲８▼端（１０）を揃え面取り端（１０Ａ）を形成する面押し、
を組合せて構成した連続成形に加えて、
▲９▼加工材料の内周面の一部を削ぎ落とすように絞り出して抜け止めとする挿入した軸受の脱落防止用手段を、
新しく付加して連続成形したことを特徴とする軸受の抜け止め付金具の一体成形方法。In order to support a member that slides along the inner wall of the container and protrudes from the open end of the container, it provides means for preventing the bearing from being inserted into at least one of the metal fittings that close the open end of the container. In order to make it happen, the following presses (1) to (8)
(1) Collect the processing material (2) that is plate-shaped and has the necessary dimensions for molding the part.
(2) Protruding part (7) is formed on processed material (2), and further expanded to projecting part (7A)
The aperture,
( ₃ ) The projection (7A ₂ ) is formed by finely molding the inside and outside of the projection (7A ₁ ) that has been further expanded.
Molded into
(4) Open the hole (8) in the projecting part (7A ₂ ), mold the flange,
(5) Perform flange bending to bend the flange inward,
(6) Pull out the ceiling (6A ₂ ) to make the protrusion (7A ₃ ).
(7) Expand the ceiling part (6A ₃ ) into a cylindrical shape,
(8) Aligning the end (10) and pressing the surface to form a chamfered end (10A),
In addition to continuous molding composed of
(9) A means for preventing the inserted bearing from falling off, which is squeezed out so as to scrape off a part of the inner peripheral surface of the work material,
A method for integrally forming a metal fitting for retaining a bearing, which is newly added and continuously formed. 軸受の脱落防止用手段の成形が、常温を含む冷熱加工によることを特徴とする請求項１に記載の軸受の抜け止め付金具の一体成形方法。The method for integrally forming a metal fitting for retaining a bearing according to claim 1, wherein the forming of the means for preventing the drop-out of the bearing is performed by cold processing including normal temperature. 容器の内壁に沿い摺動し、該容器の開放端部から突出する部材を支持するために、前記容器の開放端部を閉塞する金具の、少なくとも一つに挿入する軸受の脱落防止手段を付与せしめるために、下記の▲１▼から▲８▼でなる各プレス工程により、
▲１▼板状で部品の成形に必要な寸法の加工素材（２）を採取する工程、
▲２▼加工素材（２）に突出部（７）を形成し、更に拡大成長して突出部（７Ａ）
とする絞り工程、
▲３▼更に拡大成長した突出部（７Ａ₁ ）の内外を細かく成形し突出部（７Ａ₂ ）
に成形する絞り工程、
▲４▼突出部（７Ａ₂ ）に孔（８）を開け、フランジを成形する工程、
▲５▼フランジを内側に屈曲させるフランジ曲げ工程、
▲６▼天井（６Ａ₂ ）を抜き突出部（７Ａ₃ ）とする天抜き工程、
▲７▼天抜き部分（６Ａ₃ ）を円筒状に拡張するバーリング工程、
▲８▼端（１０）を揃え面取り端（１０Ａ）を形成する面押し工程、
を組合せて構成した連続成形工程に加えて、
▲９▼少なくとも二層の押型で各々構成された上・下型（１６，２１）でなる組金型（１５，３５）を使用して、挿入する軸受の脱落防止用手段を金具に形成するプレス工程を、
追加して連続成形工程としたことを特徴とする軸受の抜け止め付金具の一体成形装置。In order to support a member that slides along the inner wall of the container and protrudes from the open end of the container, a means for preventing the bearing from being inserted is inserted into at least one of the metal fittings that close the open end of the container. In order to make it happen, the following pressing steps (1) to (8)
(1) A process of collecting a processing material (2) having a plate shape and dimensions necessary for forming a part,
(2) Protruding part (7) is formed on processed material (2), and further expanded to projecting part (7A)
Drawing process,
( ₃ ) The projection (7A ₂ ) is formed by finely molding the inside and outside of the projection (7A ₁ ) that has been further expanded.
Drawing process to form into,
(4) A step of opening a hole (8) in the projecting portion (7A ₂ ) and molding a flange,
(5) Flange bending process for bending the flange inward,
(6) A ceiling removal process in which the ceiling (6A ₂ ) is removed and the projection (7A ₃ ) is used,
(7) Burring process for expanding the top portion (6A ₃ ) into a cylindrical shape,
(8) A face pressing step for aligning the end (10) to form a chamfered end (10A),
In addition to the continuous molding process composed of
(9) Forming means for preventing the bearing to be dropped from being inserted into the metal fittings using the molds (15, 35) composed of the upper and lower molds (16, 21) each composed of at least two layers of molds. Pressing process
An apparatus for integrally forming a metal fitting for retaining a bearing, wherein a continuous molding process is added. 軸受の脱落防止用手段を形成する組金型（１５，３５）が、上・下型（１６，２１）でなり、上型（１６）の構造が、同心円をなすように内・中・外各押型（１８，１９，２０）が配置され、外押型（２０）に作用する成形力が中押型（１９）の基部に集中するように組合されて、上型台（１７）の下面に吊り下げられた移動型であり、下型（２１）の構造が、同心円をすように内・中・外各押型（２３，２４，２５，４３）が配置され、押型（２４，２５）に作用する成形力が内押型（２３，４３）の基部に集中するように組合されて、下型台（２２）上に設置された固定型とし、且つ上型（１６）の動きとは別に内押型（１８）は中押型（１９）の内面に沿い軸方向への単独移動を可能とし、内押型（１８，２３，４３）・中押型（１９，２４）・外押型（２０，２５）の組合せは、それぞれの組合せが対応する関係にあり、内押型（１８，２３，４３）の各先端は両者が最も接近したとき、僅かの隙間が確保されて接触することなく、上型（１６）の内押型先端（１８Ａ）部分を、加工材料の厚み分を差し引いた直径の同心円として削り込んで胴部（１８Ｂ）・段（１８Ｃ）として、前記加工材料を確実に捕捉し同材料の端面に成形力を伝達する形状とし、下型（２３）の内押型先端（２３Ａ，４３Ａ）の角部分は、前記成形力を受け前記加工材料を成形加工するが、この際に前記成形力が前記加工材料に十分に伝達されるように、中押型（１９，２４）・外押型（２０，２５）は接触対象である前記加工材料の既成形部分の形状に合致するように仕上げられていることを特徴とする請求項３に記載の軸受の抜け止め付金具の一体成形装置。The assembly molds (15, 35) that form the means for preventing the bearing from falling off are the upper and lower molds (16, 21), and the structure of the upper mold (16) is inner, middle, and outer so as to form concentric circles. The respective pressing dies (18, 19, 20) are arranged and combined so that the molding force acting on the outer pressing dies (20) is concentrated on the base of the intermediate pressing dies (19), and hung on the lower surface of the upper die base (17). It is a lowered moving type, and the structure of the lower mold (21) has inner, middle and outer pressing molds (23, 24, 25, 43) arranged so as to form concentric circles, and acts on the pressing molds (24, 25). Are combined so that the molding force to concentrate on the base of the inner mold (23, 43) is a fixed mold installed on the lower mold table (22), and the inner mold is separate from the movement of the upper mold (16). (18) enables independent movement in the axial direction along the inner surface of the intermediate pressing die (19), and the inner pressing die (18, 23, 43) and intermediate pressing die (19 24) The combination of the outer pressing dies (20, 25) has a corresponding relationship, and when the tips of the inner pressing dies (18, 23, 43) are closest to each other, a slight gap is secured. The inner die tip (18A) portion of the upper die (16) is cut as a concentric circle having a diameter obtained by subtracting the thickness of the work material without contacting the upper die (16) as the body (18B) / step (18C). The material is surely captured and shaped to transmit the molding force to the end face of the same material, and the corner portion of the inner mold tip (23A, 43A) of the lower mold (23) receives the molding force to mold the work material. However, in this case, the intermediate pressing dies (19, 24) and outer pressing dies (20, 25) are in contact with each other so that the forming force is sufficiently transmitted to the processing material. Specially finished to match Integrally molding apparatus bearing the stopper with bracket according to claim 3,. 組金型（１５）の上・下型（１６，２１）を構成する各内押型（１８，２３）の先端（１８Ａ，２３Ａ）を全面平坦か何れか一方の先端を平坦でしかも抜け止めの内径に相当した直径で該抜け止めの厚みより薄い段差付とした、何れか形状としたことを特徴とする請求項３か４に記載の軸受の抜け止め付金具の一体成形装置。The tips (18A, 23A) of the inner pressing dies (18, 23) constituting the upper and lower dies (16, 21) of the assembled mold (15) are either flat on the whole surface, or one of the tips is flat and is not slipping out. 5. The apparatus for integrally forming a retaining bracket for a bearing according to claim 3 or 4, wherein the bearing has a shape corresponding to an inner diameter and has a step which is thinner than the retaining thickness. 組金型（３５）の下型（２１）を構成する内押型（４３）の先端（４３Ａ）に、少なくとも一個の任意の幅で深さの爪（４３Ｂ）を備えたことを特徴とする請求項３か４に記載の軸受の抜け止め付金具の一体成形装置。The tip (43A) of the inner pressing die (43) constituting the lower die (21) of the assembled die (35) is provided with at least one claw (43B) having an arbitrary width and depth. Item 5. An apparatus for integrally forming a retaining bracket for a bearing according to Item 3 or 4. 容器の内壁に沿い摺動し、該容器の開放端部から突出する部材を支持するために、前記容器の開放端部を閉塞する金具の、少なくとも一つに挿入する軸受の脱落を防止するために、プレスにより前記金具の内周面の一部を削ぎ落とすように絞り出し、軸受の脱落防止用手段を付与したことを特徴とする軸受の抜け止め付金具の一体成形物。To prevent a bearing inserted into at least one of the metal fittings that close the open end of the container from sliding along the inner wall of the container and support the member protruding from the open end of the container. In addition, the bearing is integrally formed with a retaining metal fitting characterized by being squeezed out so as to scrape off a part of the inner peripheral surface of the metal fitting, and provided with means for preventing the bearing from falling off. 軸受の脱落防止用手段が、加工材料の内周面上に備えた環状で断面が四辺形状の突起（１１）であることを特徴とする請求項７に記載の軸受の抜け止め付金具の一体成形物。The bearing retaining fitting according to claim 7, wherein the means for preventing the bearing from falling off is an annular projection having a quadrilateral cross section provided on the inner peripheral surface of the work material. Moldings. 軸受の脱落防止用手段が、少なくとも一個の加工材料の内周面上に備えた小突起（１１Ａ）であることを特徴とする請求項７に記載の軸受の抜け止め付金具の一体成形物。The integrally formed product of the retaining bracket for a bearing according to claim 7, wherein the means for preventing the bearing from falling is a small protrusion (11A) provided on an inner peripheral surface of at least one processed material.

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