JP4230193B2 - Anti-rest device - Google Patents

Anti-rest device Download PDF

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JP4230193B2
JP4230193B2 JP2002309743A JP2002309743A JP4230193B2 JP 4230193 B2 JP4230193 B2 JP 4230193B2 JP 2002309743 A JP2002309743 A JP 2002309743A JP 2002309743 A JP2002309743 A JP 2002309743A JP 4230193 B2 JP4230193 B2 JP 4230193B2
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JP2004142018A (en
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清 廣澤
隆三 伊藤
憲治 佐藤
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IKURA SEIKI SEISAKUSHO CO Ltd
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IKURA SEIKI SEISAKUSHO CO Ltd
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Description

【0001】
【産業上の利用分野】
本発明は、棒材加工機に向かって前進させる送り矢の振れを防止するための振止め装置に関する。
【0002】
【従来技術】
旋盤等の棒材加工機によって棒材を加工する間、棒材は棒材加工機の主軸によって高速回転されるので棒材が振動する。棒材が振動すると、棒材を精密に加工することができなかったり、また、騒音の原因となることから、棒材加工中は、例えば、特開平9−216102号公報に開示されているようなローラ式やベルト式の棒材振止め装置によって棒材を保持して、振れを防止するようにしている。棒材は、棒材加工中、棒材振止め装置のローラやベルトによって、棒材の給送方向に対して横方向の振れが防止される。また、棒材は加工中に主軸によって高速回転されるので、ローラやベルトが棒材の回転に伴って回転して、棒材の高速回転を許容する。ローラやベルトによって棒材が把持された状態では、棒材の周面との間の摩擦によって、棒材を前進させることができないので、1つの部品の加工が終了するごとに、棒材振止め装置を開放して、棒材を前進させる。
【0003】
また、上記公報に開示の装置においては、棒材の加工の進行に伴って棒材を送り矢によって前進させ、棒材が棒材振止め装置を通過し、棒材振止め装置によって把持することができなくなった後は、この棒材振止め装置を利用して送り矢を把持するようにし、送り矢の振れを防止している。
この場合、棒材と送り矢とでは径が異なる場合があるので、上記棒材振止め装置は、送り矢の外径に対応して、ローラやベルトを送り矢の周面を把持できる所定位置に移動させるための再締め機構を設けて、径の差に対応するようにしている。
【特許文献1】
特開平9−216102号公報
【0004】
【発明が解決しようとする課題】
本発明の目的は、送り矢の振れを防止するための振止め装置を提供することにある。
【0005】
【課題を解決するための手段】
本発明の上記目的は、加工すべき棒材を後方から押して、給送軸線上で棒材加工機に向かって前進させる送り矢の振れを防止するための振止め装置であって、前記送り矢の横方向への振れを阻止し、且つ、前記送り矢の給送方向への移動を許容するように、前記送り矢の周面を摺動可能に保持する摺動面を有する、ことを特徴とする振止め装置によって達成することができる。
本発明に係る振止め装置は、従来、送り矢の振れを防止するため使用していた棒材振止め装置とは構造が全く異なるものである。棒材振止め装置は、棒材の加工中、棒材が高速回転するという特性から、棒材を回転自在にするため、棒材の回転を許容するローラやベルトを有しているが、本発明に係る送り矢用の振止め装置は、送り矢、特に、その本体部が回転しないことに着目して開発したものである。
【0006】
本発明に係る振止め装置においては、送り矢の周面を摺動面によって保持させるので、従来の棒材振止め装置と比べて、構造を簡略化されている。また、棒材を摺動面で保持するので、振止め装置によって送り矢を保持した状態で前進させることが可能となり、部品加工が終了するまで、振止め装置の開閉動作が不要である。
従来の装置のように、棒材振り止め装置によって送り矢の振止めを行う場合は、棒材を前進される度に開放する必要がある。この場合、送り矢は自重で下方に撓むので、棒材が曲がった状態でコレットチャックまで給送され、曲がった状態で把持される。
【0007】
本発明に係る送り矢用の振止め装置においては、開閉動作が不要であるので、送り矢を常に給送軸線上に支持した状態とすることができる。従って、部品の加工が終了する度にコレットチャックが開き、棒材を送り矢によって前進させる際、棒材を給送軸線に沿って真っ直ぐな状態で給送でき、棒材をコレットチャックによって撓みのない真っ直ぐな状態で把持させることができる。これによって、精密な部品加工が可能となる。また、部品の加工が終了する度に送り矢を前進させるため、振止め装置を開放する必要がないので、開閉動作の終了を待たずに次の動作に移行することができ、加工時間の短縮化を図ることができる。また、棒材加工中、送り矢の振れを防止することができ、精密に部品を加工することができる。
【0008】
また、本発明の実施の形態においては、前記送り矢の給送軸線に対して互いに反対側に配置された複数の挟持部材を有し、該挟持部材の前記送り矢の周面と対向する部分に、前記摺動面が、前記送り矢を受入れ可能な凹状を成して形成されており、また、前記挟持部材は、前記摺動面が前記送り矢の周面から離間した離間位置と、前記送り矢の周面を保持する保持位置との間で移動される。本実施形態によれば、摺動面は挟持部材に形成された凹状の面で構成されているので製造が容易である。
更に、本発明の実施の形態においては、前記凹状の摺動面は、対称軸線を中心として、対称な横V字形を成し、前記対称軸線は前記給送軸線を通る。凹状の摺動面は横V字形を成しているので、加工すべき棒材の径に対応する送り矢に取替えるため、送り矢の径が変わっても、挟持部材が離間位置から保持位置に移動する際、横V字形の摺動面によって、送り矢の長手方向中心軸線と給送軸線とが同心上となる位置に案内されるので、様々な大きさの径を有する送り矢に対応することができる。
【0009】
また、本発明の上記目的は、棒材の給送方向に対して主軸の後側に、棒材を給送軸線上で後方から押して前進させる送り矢の振れを防止するための振止め装置が取付けられており、該振止め装置は、前記送り矢の給送軸線に対して互いに反対側に配置された複数の挟持部材を有し、該挟持部材の前記送り矢の周面と対向する部分に、前記送り矢の横方向への振れを阻止し、且つ、前記送り矢の給送方向への移動を許容するように、前記送り矢の周面を摺動可能に保持する前記摺動面が形成されており、また、前記挟持部材は、前記摺動面が前記送り矢の周面から離間した離間位置と、前記送り矢の周面を保持する保持位置との間で移動され、棒材を送り矢によって前進させる過程で、前記送り矢を保持できない位置においては、前記振止め装置の前記挟持部材は前記離間位置に維持され、また、前記送り矢を保持できる位置においては、前記振止め装置の前記挟持部材は前記保持位置に維持される、ことを特徴とする棒材加工機によっても達成することができる。
【0010】
更に、本発明の上記目的は、棒材の給送方向に対して主軸の後側に、該主軸側から順に、棒材の振れを防止するための棒材振止め装置と、棒材を後方から押して給送軸線上で前進させる送り矢の振れを防止するための送り矢用振止め装置とが取付けられており、該送り矢用振止め装置は、前記送り矢の給送軸線に対して互いに反対側に配置された複数の挟持部材を有し、該挟持部材の前記送り矢の周面と対向する部分に、前記送り矢の横方向への振れを阻止し、且つ、前記送り矢の給送方向への移動を許容するように、前記送り矢の周面を摺動可能に保持する前記摺動面が形成されており、また、前記挟持部材は、前記摺動面が前記送り矢の周面から離間した離間位置と、前記送り矢の周面を保持する保持位置との間で移動され、棒材を送り矢によって前進させる過程で、前記棒材振止め装置によって棒材を把持可能な間は、棒材加工中と棒材前進中のそれぞれにおいて、前記棒材振止め装置が、棒材を把持する閉じ動作と棒材を解放する解放動作とを繰返し、この間、前記送り矢用振止め装置の前記挟持部材は前記離間位置に維持され、また、棒材が前記棒材振止め装置を通過し、該棒材振止め装置によって棒材を把持することができないとき、棒材の残余の部分の加工が終了するまでの間、前記振止め装置を解放し、また、前記送り矢用振止め装置の前記挟持部材は前記保持位置に維持される棒材加工機によっても達成することができる。
【0011】
本発明においては、上記の送り矢用の振止め装置の作用効果に加え、送り矢専用の振止め装置を設けているので、棒材振止め装置によって送り矢を把持させる必要がなく、棒材振止め装置に、所謂「再締め機構」を設ける必要がない。棒材振止め装置によって棒材を把持できないとき、送り矢用振止め装置によって送り矢を保持し続けるので、棒材加工中の送り矢の振れを防止でき、それによって精密に部品を加工することができる。
更に、本発明の実施の形態においては、前記主軸は移動式であり、前記棒材振止め装置と前記送り矢用振止め装置とが、前記主軸と共に移動可能に取付けられている。本発明の実施形態によれば、送り矢振止め装置によって、主軸の後側の所定位置、すなわち、棒材の先端部を把持するコレットチャックから所定の距離の位置で送り矢を保持しているので、主軸がどの位置に移動しても送り矢の振れを効果的に防止することができる。
【0012】
また、本発明の上記目的は、棒材の給送方向に、棒材を給送軸線上で後方から押して前進させる送り矢の振れを防止するための送り矢用振止め装置が取付けられており、該送り矢用振止め装置は、前記送り矢の給送軸線に対して互いに反対側に配置された複数の挟持部材を有し、該挟持部材の前記送り矢の周面と対向する部分に、前記送り矢の横方向への振れを阻止し、且つ、前記送り矢の給送方向への移動を許容するように、前記送り矢の周面を摺動可能に保持する前記摺動面が形成されており、また、前記挟持部材は、前記摺動面が前記送り矢の周面から離間した離間位置と、前記送り矢の周面を保持する保持位置との間で移動され、棒材を送り矢によって前進させる過程で、前記送り矢を保持できない位置においては、前記送り矢用振止め装置の前記挟持部材は前記離間位置に維持され、また、前記送り矢を保持できる位置においては、前記送り矢用振止め装置の前記挟持部材は前記保持位置に維持される、ことを特徴とする棒材供給機によっても達成することができる。
【0013】
【発明の実施の形態】
以下、添付の図面を参照しつつ、本発明にかかる送り矢用の振止め装置を有する棒材加工機の実施の形態について説明する。
図1は、本実施の形態に係る送り矢用振止め装置が取付けられた棒材加工機と、棒材加工機に棒材を供給するための棒材供給機の側面図である。
図1を参照しつつ、本実施の形態に係る送り矢用振止め装置2が取付けられた棒材加工機4と、棒材加工機4に棒材を供給するための棒材供給機6について説明する。棒材の給送方向に対して主軸8の後側に、主軸側から順に、棒材の振れを防止するための棒材振止め装置10と、棒材を給送軸線上で後方から押して前進させる送り矢14の振れを防止するための送り矢用振止め装置2とが取付けられている。本実施形態に係る棒材加工機4は主軸移動式であり、送り矢用振止め装置2及び棒材振止め装置10が、主軸8と共に移動可能にブラケット12によって取付けられている。
【0014】
棒材加工機4の後側には、棒材を棒材加工機4に供給するための棒材供給機6が配置されている。棒材供給機6は、棒材加工機4に向かって真っ直ぐに延びるガイドレール(図面上、省略する)を有し、ガイドレール内には棒材を給送軸線O−O上で前進させるための送り矢14が設けられている。
送り矢14は、本体部16と、その先端に設けられた棒材支持部18とを有する。本体部16は棒材の回転と共に回転しないが、棒材支持部18は棒材Wの後端部を支持し、棒材加工中、棒材と共に高速回転する。本実施の形態に係る送り矢14においては、棒材支持部18は、棒材の後端部を差し込んで把持させるフィンガーチャックで構成されている。
棒材供給機6の前端部には、ローラ式の棒材振止め装置22が設けられている。
【0015】
図2は、図1に示すII−II部分の部分拡大図である。
図2を参照しつつ、棒材加工機4に設けられた棒材振止め装置10及び送り矢用振止め装置2について、更に、詳細に説明する。棒材振止め装置10と送り矢用振止め装置2との間には、それらの間の距離を変更するための距離調整手段20が設けられている。本実施形態においては、距離調整手段20は、送り矢用振止め装置2を棒材振止め装置10の後方において、互いに所定距離を隔てて取付ける離間部材20で構成されている。この離間部材20は様々な長さのものが準備されており、棒材の給送に使用する送り矢14の棒材支持部18の長さに対応して取替ることにより、棒材振止め装置10と送り矢用振止め装置2との間の距離を変更することができる。離間部材20の長さは、少なくとも、送り矢14の棒材支持部18又はフィンガーチャックの長さ以上とするのが好ましい。これによって、フィンガーチャックが、棒材加工機4に設けられた送り矢用振止め装置2と棒材振止め装置10との間に位置する場合に、いずれによっても保持することができず、両方とも解放状態となり、棒材及び送り矢14が棒材加工中に振れる事態を回避することができる。また、棒材供給機6の先端にも棒材振止め装置22が設けられている。本実施形態においては、棒材振止め装置10、22はローラ式のものを採用している。これら棒材振止め装置10、22及び送り矢用振止め装置2によって、棒材又は送り矢14の長手方向中心軸線が、給送軸線O−Oと同心上に保持される。
【0016】
図3及び図4は、送り矢用振止め装置を示し、そのうち、図3は、挟持部材が離間位置にある状態を、また、図4は保持位置にある状態を示す。
図3及び図4に示すように、送り矢用振止め装置2は、送り矢14の給送軸線O−Oに対して左右に配置された2つの挟持部材24を有する。各挟持部材24はプレート部材で構成されている。挟持部材24の送り矢14の周面と対向する部分に、送り矢14の横方向への振れを阻止し、且つ、送り矢14の給送方向への移動を許容するように、送り矢14の周面を摺動可能に保持する摺動面26が形成されている。より詳細には、摺動面26は、送り矢14を受入れ可能な凹状を成して形成されている。より具体的には、凹状の摺動面26は、給送軸線O−Oに向かって開放した、対称軸線X−Xを中心として対称な横V字形を成しており、横V字形の対称軸線X−Xは給送軸線を通る。摺動面26を横V字形としているのは、送り矢14を加工すべき棒材の径に対応して取替える必要がある場合があり、様々な大きさの径(本体部16の径)を有する送り矢14に対応することができるようにするためである。
【0017】
また、送り矢用振止め装置2は、更に、挟持部材24を、摺動面26が送り矢14の周面から離間した離間位置と、送り矢14の周面を保持する保持位置との間で移動するための移動手段28を有する。移動手段28は、開閉機構30を有するシリンダを有し、2つのプレート状挟持部材24の上端は、それぞれ、移動手段28の開閉機構30に取付られている。これらは、移動手段28によって互いに給送軸線O−Oから遠ざかる方向又は近づく方向に移動される。なお、開閉機構30を有するシリンダは市販のものを使用しており、その構造の詳細は省略する。
【0018】
挟持部材24が図3に示す離間位置にある状態では、送り矢14は、自重によって撓み、その長手方向中心軸線が給送軸線O−Oよりも下方に位置しているが、挟持部材24が図3に示す離間位置から、図4に示す保持位置に移動する際、送り矢14は、横V字形の摺動面26の下部によって上方に案内され、図4に示す保持位置においては、送り矢14の長手方向中心軸線と給送軸線とが同心上となる位置まで持ち上げられる。
【0019】
図3及び図4に示す送り矢用振止め装置2は、更に、保持位置にあるときの2つの挟持部材24に形成された摺動面26の間の距離を、送り矢14の本体部16の径に対応して変更するための間隔変更手段32を有する。この間隔変更手段32は、摺動面26の移動方向、即ち、挟持部材24の移動方向に延びるねじ34と、ねじ34の緩みを防止るためのナット36とを有する。ねじ34の調整により、ねじ34の先端部34aが挟持部材24の間に突出して、挟持部材24が互いに所定距離以上近づくのを妨げる。
【0020】
図5は、棒材振止め装置を示す。
図5は、棒材加工機4に取付けられた棒材振止め装置10を示す。図5に示すように、棒材振止め装置10は、送り矢14の給送軸線O−Oに対して左右にそれぞれ1対づつ配置されたローラ38と、ローラ38を棒材の周面から離間した解放位置(図5参照)と、棒材の周面を把持する閉じ位置との間で移動させるための移動手段40とを有する。移動手段40は、図3及び図4に示す送り矢用振止め装置2と同様に、開閉機構42を有するシリンダである。2対のローラ38はそれぞれ、送り矢14の給送軸線O−Oに対して左側及び右側に、取付けブラケット44を介して開閉機構30に取付られている。
【0021】
ローラ38が図5に示す解放位置にある状態では、棒材は自重によって撓み、その長手方向中心軸線が給送軸線O−Oよりも下方に位置するが、ローラ38が図5に示す解放位置から閉じ位置(図示せず)に移動する際、棒材は、下方のローラ38の周面によって上方に案内され、閉じ位置においては、棒材の長手方向中心軸線と給送軸線O−Oとが同心上となる位置まで持ち上げられる。
図5に示す棒材振止め装置10は、互いに給送軸線の反対側に配置されたローラ間の距離を、加工すべき棒材の径に対応して変更するための間隔変更手段46を有する。この間隔変更手段32は、送り矢用振止め装置2と同様な構造を有する。
【0022】
次に、フィンガーチャックの位置との関連で段階的に分けて、送り矢用振止め装置2及び棒材振止め装置10、22の動作について説明する。
初期状態においては、棒材供給機6及び棒材加工機4に取付けられた棒材振止め装置10、22は解放位置にあり、また、棒材加工機4に取付けられた送り矢用振止め装置2は離間位置にある。
ガイドレール内において、材料棚(図示せず)から供給された棒材に向かって送り矢14を前進させ、棒材の後端部をフィンガーチャックの中に挿入して把持させる。送り矢14を前進させ、棒材の前端部を主軸8の中に挿通する。
【0023】
以下、フィンガーチャック18と、棒材振止め装置10、22及び送り矢用振止め装置2との位置関係にしたがって、段階的に場合分けをして、動作を説明する。
【0024】
1.フィンガーチャック18が棒材供給機6に設けられた棒材振止め装置22に到達するまで
【0025】
主軸8の前端部に設けられたコレットチャックが閉じ、棒材の先端部が把持される。また、棒材供給機6及び棒材加工機4に設けられた棒材振止め装置22、10が閉じて棒材を把持し、棒材加工中、棒材の振れが防止される。部品の加工が終了すると、コレットチャック及び棒材振止め装置22、10が解放され、棒材が前進して部品が突っ切られる。引き続き、コレットチャックが閉じ、また、棒材振止め装置22、10が閉じて棒材が加工される。この動作が繰り替えされる。なお、この間、送り矢用振止め装置2は離間位置に維持され、保持位置には移動しない。
【0026】
2.フィンガーチャック18が棒材供給機6に設けられた棒材振止め装置22に到達した後、送り矢用振止め装置2を通過するまで
【0027】
コレットチャックが閉じ、棒材の先端部が把持される。棒材が通過したので、棒材供給機6に設けられた棒材振止め装置22は、以降、棒材全体の加工が終了するまで解放位置に維持される。棒材加工機4に設けられた棒材振止め装置10が閉じて棒材を把持し、棒材加工中、棒材の振れが防止される。部品の加工が終了すると、コレットチャック及び棒材振止め装置10が解放位置に移動し、棒材が前進して、部品が突っ切られる。引き続き、コレットチャックが閉じ、また、棒材振止め装置10が閉じて、棒材が加工される。この動作が繰り替えされる。なお、この間、送り矢用振止め装置2は離間位置に維持され、保持位置には移動しない。
【0028】
3.フィンガーチャック18が送り矢用振止め装置2を通過した後、棒材加工機4に設けられた棒材振止め装置10に到達するまで
【0029】
コレットチャックが閉じ、棒材の先端部が把持される。棒材加工機4に設けられた棒材振止め装置10が閉じて棒材を把持し、棒材加工中、棒材の振れが防止される。また、送り矢用振止め装置2が保持位置に移動し、送り矢14の本体部16を保持する。以降、送り矢用振止め装置2は、棒材全体の加工が終了するまで、送り矢14の前進中も保持位置に維持される。部品の加工が終了すると、コレットチャック及び棒材振止め装置10が解放位置に移動し、棒材が前進して部品が突っ切られる。送り矢14は送り矢用振止め装置2の摺動面26に沿って摺動して前進する。引き続き、コレットチャックが閉じ、また、棒材振止め装置10が閉じて、棒材が加工される。この動作が繰り替えされる。
【0030】
4.フィンガーチャック10が棒材加工機4に設けられた棒材振止め装置10に到達した後
【0031】
コレットチャックが閉じ、棒材の先端部が把持される。棒材が通過したので、棒材加工機4に設けられた棒材振止め装置10は、以降、棒材全体の加工が終了するまで解放位置に維持される。また、送り矢用振止め装置2は保持位置に維持されたままである。部品の加工が終了すると、コレットチャックが開き、棒材が前進して部品が突っ切られる。送り矢14は送り矢用振止め装置2の摺動面26に沿って摺動して前進する。引き続き、コレットチャックが閉じ、棒材が加工される。この動作が残余の棒材の加工が終了するまで繰り替えされる。
【0032】
本発明は、以上の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。
例えば、上記棒材加工機4は主軸移動式であるが、上記送り矢用振止め装置2を主軸固定式の棒材加工機4に設けても良い。
また、上記送り矢用振止め装置2を棒材供給機6に設けてもよい。この場合、主軸8に近い位置で送り矢14を保持するため、棒材供給機6の先端部に設けるのが好ましい。
【0033】
更に、本実施形態においては、送り矢用振止め装置2の挟持部材24はプレート部材であるが、挟持部材24は、送り矢14を保持する摺動面26を有していれば他の形状であってもよく、例えば、送り矢14の本体部16の外径と略同径の内径を有する中空管を長手方向に分割した形状の部材を挟持部材24として採用し、その内周面を摺動面26としてもよい。
更に、本実施形態においては、摺動面26は横V字形を成しているが、凹部は他の形状であってもよく、曲面を成していてもよい。
更に、送り矢14は棒材を給送するいかなる構造の送り部材であってもよい。送り矢14の本体部16の外径に対応して、送り矢用振止め装置2の摺動面26間の距離を間隔変更手段32によって変更すればよい。
更に、棒材振止め装置10は、上記ローラ式振止め装置に代えて、ベルト式振止め装置を採用してもよい。
【0034】
【発明の効果】
本発明によれば、送り矢の振れを防止するための振止め装置を提供することができる。
【図面の簡単な説明】
【図1】本実施の形態に係る送り矢用振止め装置が取付けられた棒材加工機と、棒材加工機に棒材を供給するための棒材供給機の側面図である。
【図2】図1に示すI−I部分の部分拡大図である。
【図3】送り矢用振止め装置の挟持部材が離間位置にある状態を示す。
【図4】送り矢用振止め装置の挟持部材が保持位置にある状態を示す。
【図5】棒材振止め装置を示す。
【符号の説明】
2 送り矢用振止め装置
4 棒材加工機
6 棒材供給機
8 主軸
10 棒材振止め装置
14 送り矢
16 本体部
18 棒材支持部
22 棒材振れ止め装置
24 挟持部材
26 摺動面
O−O 給送軸線
X−X 対称軸線
[0001]
[Industrial application fields]
The present invention relates to a steady rest device for preventing the swing of a feed arrow that moves forward toward a bar processing machine.
[0002]
[Prior art]
While a bar is processed by a bar processing machine such as a lathe, the bar is vibrated because it is rotated at high speed by the main shaft of the bar processing machine. When the bar vibrates, the bar cannot be processed precisely or causes noise, so that during bar processing, for example, it is disclosed in Japanese Patent Laid-Open No. 9-216102. The bar is held by a roller-type or belt-type bar anti-vibration device to prevent run-out. During the bar processing, the bars are prevented from shaking laterally with respect to the feeding direction of the bars by the rollers and belts of the bar stopper. Further, since the bar is rotated at a high speed by the main shaft during processing, the roller and the belt rotate with the rotation of the bar to allow the bar to rotate at a high speed. When the bar is gripped by a roller or belt, the bar cannot be advanced due to friction with the peripheral surface of the bar. Open the device and advance the bar.
[0003]
In the apparatus disclosed in the above publication, the bar is advanced by a feed arrow as the bar is processed, and the bar passes through the bar anti-vibration device and is gripped by the bar anti-vibration device. After it becomes impossible, the bar arrow is held by using this bar-stabilizing device to prevent the arrow from swinging.
In this case, since the diameter of the bar may differ from that of the feed arrow, the bar anti-vibration device has a predetermined position at which the roller or belt can grip the peripheral surface of the feed arrow in accordance with the outer diameter of the feed arrow. A retightening mechanism is provided for moving to a position corresponding to the difference in diameter.
[Patent Document 1]
JP-A-9-216102 [0004]
[Problems to be solved by the invention]
It is an object of the present invention to provide a steady rest device for preventing the swing of a feed arrow.
[0005]
[Means for Solving the Problems]
The above-mentioned object of the present invention is a steadying device for preventing a swing of a feed arrow that pushes a bar to be processed from the rear and advances it toward a bar processing machine on a feed axis, the feed arrow A sliding surface that slidably holds the circumferential surface of the feed arrow so as to prevent lateral movement of the feed arrow and allow movement of the feed arrow in the feeding direction. This can be achieved by the anti-vibration device.
The anti-skid device according to the present invention has a completely different structure from the bar anti-skid device that has been conventionally used to prevent the feed arrow from swinging. The bar stopper device has a roller and a belt that allow the bar to rotate in order to make the bar rotatable because of the property that the bar rotates at high speed during the processing of the bar. The anti-feed device for the feed arrow according to the invention has been developed by paying attention to the fact that the feed arrow, particularly its main body, does not rotate.
[0006]
In the anti-shake device according to the present invention, since the peripheral surface of the feed arrow is held by the sliding surface, the structure is simplified compared to the conventional bar anti-vibration device. In addition, since the bar is held by the sliding surface, it can be moved forward with the feed arrow held by the anti-vibration device, and the opening / closing operation of the anti-vibration device is not required until the component processing is completed.
When the feed arrow is held by the bar swinging device as in the conventional device, it is necessary to open the bar every time the bar is advanced. In this case, since the feed arrow is bent downward by its own weight, the bar is fed to the collet chuck in a bent state and is gripped in a bent state.
[0007]
Since the opening and closing operation for the feed arrow according to the present invention is unnecessary, the feed arrow can always be supported on the feed axis. Therefore, the collet chuck opens every time the machining of the part is completed, and when the bar is advanced by the feed arrow, the bar can be fed straight along the feed axis, and the bar is bent by the collet chuck. It can be gripped in a straight state. As a result, precise part processing is possible. Also, since the feed arrow is advanced each time the machining of the part is completed, it is not necessary to open the anti-rest device, so that the next operation can be started without waiting for the end of the opening / closing operation, and the machining time can be shortened. Can be achieved. Further, during the bar processing, the swing of the feed arrow can be prevented, and the part can be processed precisely.
[0008]
Further, in the embodiment of the present invention, it has a plurality of clamping members arranged on the opposite sides with respect to the feeding axis of the feeding arrow, and a portion of the clamping member that faces the circumferential surface of the feeding arrow In addition, the sliding surface is formed in a concave shape capable of receiving the feed arrow, and the clamping member has a spaced position where the slide surface is separated from the peripheral surface of the feed arrow, It is moved between the holding position for holding the circumferential surface of the feed arrow. According to the present embodiment, since the sliding surface is formed by a concave surface formed on the holding member, the manufacturing is easy.
Furthermore, in an embodiment of the present invention, the concave sliding surface has a symmetrical horizontal V shape centered on the symmetry axis, and the symmetry axis passes through the feeding axis. Since the concave sliding surface has a horizontal V shape, the holding member is moved from the separated position to the holding position even if the diameter of the feed arrow changes in order to replace the feed arrow corresponding to the diameter of the bar to be processed. When moving, the horizontal V-shaped sliding surface is guided to a position where the longitudinal center axis of the feed arrow and the feed axis are concentric, so it corresponds to feed arrows having various diameters. be able to.
[0009]
In addition, the above-described object of the present invention is to provide an anti-vibration device for preventing the swing of a feed arrow that advances the bar by pushing it backward from the feed axis on the rear side of the main shaft with respect to the feed direction of the bar. The attached anti-rotation device has a plurality of clamping members arranged on opposite sides to the feeding axis of the feed arrow, and a portion of the clamping member that faces the peripheral surface of the feed arrow The sliding surface that slidably holds the circumferential surface of the feeding arrow so as to prevent the feeding arrow from swinging in the lateral direction and to allow movement of the feeding arrow in the feeding direction. And the clamping member is moved between a separation position where the sliding surface is separated from the circumferential surface of the feed arrow and a holding position which holds the circumferential surface of the feed arrow, In the process of advancing the material with the feed arrow, the anti-rest device is installed at a position where the feed arrow cannot be held. The holding member is maintained at the separated position, and the holding member of the anti-vibration device is maintained at the holding position at a position where the feeding arrow can be held. Can also be achieved.
[0010]
Furthermore, the above object of the present invention is to provide a bar retaining device for preventing the bar from swinging to the rear side of the main shaft with respect to the feeding direction of the bar, and the rear of the bar. Is attached to the feed arrow anti-sway device for preventing the feed arrow from swinging to be pushed forward from the feed axis. A plurality of clamping members arranged on opposite sides of each other, the lateral movement of the feeding arrow is prevented at a portion facing the peripheral surface of the feeding arrow, and The sliding surface that slidably holds the circumferential surface of the feed arrow is formed so as to allow movement in the feeding direction, and the clamping member has the sliding surface that is the feed arrow. The bar material is fed between a separation position separated from the peripheral surface of the feed bar and a holding position for holding the peripheral surface of the feed arrow. While the bar can be gripped by the bar stocking device in the process of moving forward by the bar stocking device, the bar stocking device grips the bar material during the processing of the bar and during the progress of the bar. And the releasing operation for releasing the bar, during this time, the holding member of the feed arrow steadying device is maintained in the separated position, and the bar passes through the bar steadying device, When the bar cannot be gripped by the material anti-vibration device, the anti-vibration device is released until the processing of the remaining portion of the bar is completed, and the holding of the feed arrow anti-vibration device The member can also be achieved by a bar processing machine maintained in the holding position.
[0011]
In the present invention, in addition to the action and effect of the above-mentioned feed arrow anti-vibration device, a feed arrow dedicated anti-vibration device is provided. There is no need to provide a so-called “retightening mechanism” in the anti-rest device. When the bar cannot be gripped by the bar stocking device, the feed arrow will continue to be held by the feed arrow steadying device, so that it is possible to prevent the feed arrow from shaking during processing of the bar material, thereby processing the part precisely. Can do.
Furthermore, in the embodiment of the present invention, the main shaft is movable, and the bar swinging device and the feed arrow swinging device are movably attached together with the main shaft. According to the embodiment of the present invention, the feed arrow is held at a predetermined position on the rear side of the main shaft, that is, a position at a predetermined distance from the collet chuck that holds the tip of the bar, by the feed arrow steadying device. Therefore, it is possible to effectively prevent the swinging arrow from moving regardless of the position of the spindle.
[0012]
Further, the above object of the present invention is provided with a feed arrow detent device for preventing the swing of the feed arrow that moves the bar in the feed axis along the feed axis from the rear to advance. The feed arrow steadying device has a plurality of clamping members arranged on opposite sides with respect to the feeding axis of the feeding arrow, and a portion of the clamping member that faces the circumferential surface of the feeding arrow. The sliding surface that slidably holds the circumferential surface of the feeding arrow so as to prevent lateral movement of the feeding arrow and to allow movement of the feeding arrow in the feeding direction. And the clamping member is moved between a separation position where the sliding surface is separated from the circumferential surface of the feed arrow and a holding position which holds the circumferential surface of the feed arrow, In the process of moving forward with a feed arrow, at the position where the feed arrow cannot be held, The holding member of the feeding device is maintained in the separated position, and the holding member of the feed arrow steadying device is maintained in the holding position at a position where the feeding arrow can be held. This can also be achieved by a bar feeder.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a bar processing machine having a feed arrow retaining device according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a side view of a bar material processing machine to which a feed arrow anti-sway device according to the present embodiment is attached and a bar material supply machine for supplying the bar material to the bar material processing machine.
Referring to FIG. 1, a bar processing machine 4 to which a feed arrow anti-sway device 2 according to the present embodiment is attached, and a bar supply machine 6 for supplying a bar to the bar processing machine 4 explain. A bar material anti-vibration device 10 for preventing the bar material from swinging in order from the main shaft side to the rear side of the main shaft 8 with respect to the feed direction of the bar material, and the bar material is pushed forward from the rear on the feed axis. A feed arrow steadying device 2 is attached to prevent the feed arrow 14 from swinging. The bar processing machine 4 according to the present embodiment is a main shaft moving type, and the feed arrow anti-vibration device 2 and the bar anti-vibration device 10 are attached to the main shaft 8 by a bracket 12 so as to be movable.
[0014]
On the rear side of the bar processing machine 4, a bar supply machine 6 for supplying the bar to the bar processing machine 4 is arranged. The bar feeder 6 has a guide rail (not shown in the drawing) that extends straight toward the bar processing machine 4 and advances the bar in the guide rail on the feed axis OO. The feed arrow 14 is provided.
The feed arrow 14 has a main body 16 and a bar support 18 provided at the tip thereof. The main body 16 does not rotate with the rotation of the bar, but the bar support 18 supports the rear end of the bar W and rotates at a high speed with the bar during the bar processing. In the feed arrow 14 according to the present embodiment, the bar support 18 is constituted by a finger chuck that inserts and grips the rear end of the bar.
At the front end of the bar feeder 6, a roller-type bar bracing device 22 is provided.
[0015]
FIG. 2 is a partially enlarged view of the II-II portion shown in FIG.
With reference to FIG. 2, the bar stocking device 10 and the feed arrow stocking device 2 provided in the bar processing machine 4 will be described in more detail. A distance adjusting means 20 for changing the distance between the bar stocking device 10 and the feed arrow steadying device 2 is provided. In the present embodiment, the distance adjusting means 20 is composed of a separation member 20 that attaches the feed arrow steadying device 2 to the back of the bar material steadying device 10 at a predetermined distance from each other. This separation member 20 is prepared in various lengths, and is replaced with a bar stock brace by replacing it according to the length of the bar support portion 18 of the feed arrow 14 used for feeding the bar stock. The distance between the device 10 and the feed arrow steadying device 2 can be changed. The length of the separating member 20 is preferably at least the length of the bar support 18 of the feed arrow 14 or the finger chuck. As a result, when the finger chuck is positioned between the feed arrow anti-vibration device 2 provided on the bar processing machine 4 and the bar anti-vibration device 10, both cannot be held. Both are in a released state, and the situation where the bar and the feed arrow 14 swing during the bar processing can be avoided. In addition, a bar material retaining device 22 is also provided at the tip of the bar material feeder 6. In the present embodiment, the bar material anti-vibration devices 10 and 22 are of a roller type. By these bar stocking devices 10 and 22 and the feed arrow steadying device 2, the longitudinal center axis of the bar or feed arrow 14 is held concentrically with the feed axis OO.
[0016]
3 and 4 show the feed arrow steadying device, of which FIG. 3 shows a state in which the clamping member is in the separated position, and FIG. 4 shows a state in which the holding member is in the holding position.
As shown in FIGS. 3 and 4, the feed arrow steadying device 2 includes two clamping members 24 arranged on the left and right with respect to the feed axis OO of the feed arrow 14. Each clamping member 24 is configured by a plate member. The feed arrow 14 is configured to prevent the feed arrow 14 from swinging in the lateral direction and allow the feed arrow 14 to move in the feeding direction at a portion of the clamping member 24 facing the peripheral surface of the feed arrow 14. A sliding surface 26 is formed to slidably hold the peripheral surface of the sliding surface. More specifically, the sliding surface 26 is formed in a concave shape that can receive the feed arrow 14. More specifically, the concave sliding surface 26 has a horizontal V-shape that is open toward the feeding axis OO and is symmetric about the symmetry axis XX. Axis XX passes through the feed axis. The sliding surface 26 has a horizontal V-shape, and it may be necessary to replace the feed arrow 14 in accordance with the diameter of the bar to be processed. This is because it is possible to correspond to the feed arrow 14 having.
[0017]
Further, the feed arrow steadying device 2 further includes the holding member 24 between a separation position where the sliding surface 26 is separated from the circumferential surface of the feed arrow 14 and a holding position where the circumferential surface of the feed arrow 14 is held. It has the movement means 28 for moving by. The moving means 28 has a cylinder having an opening / closing mechanism 30, and the upper ends of the two plate-like clamping members 24 are respectively attached to the opening / closing mechanism 30 of the moving means 28. These are moved by the moving means 28 in a direction away from or closer to the feeding axis OO. In addition, the cylinder which has the opening / closing mechanism 30 uses the commercially available thing, The detail of the structure is abbreviate | omitted.
[0018]
In the state where the clamping member 24 is in the separated position shown in FIG. 3, the feed arrow 14 is bent by its own weight, and its longitudinal center axis is located below the feeding axis OO, but the clamping member 24 is When moving from the separated position shown in FIG. 3 to the holding position shown in FIG. 4, the feed arrow 14 is guided upward by the lower part of the horizontal V-shaped sliding surface 26, and in the holding position shown in FIG. The longitudinal center axis of the arrow 14 and the feed axis are lifted to a concentric position.
[0019]
3 and FIG. 4 further shows that the distance between the sliding surfaces 26 formed on the two clamping members 24 when the feed arrow steadying device 2 is in the holding position is the main body portion 16 of the feed arrow 14. There is an interval changing means 32 for changing according to the diameter. The interval changing means 32 includes a screw 34 extending in the moving direction of the sliding surface 26, that is, the moving direction of the clamping member 24, and a nut 36 for preventing the screw 34 from loosening. The adjustment of the screw 34 causes the tip 34a of the screw 34 to protrude between the clamping members 24, thereby preventing the clamping members 24 from approaching each other by a predetermined distance or more.
[0020]
FIG. 5 shows a bar stocking apparatus.
FIG. 5 shows the bar stocking apparatus 10 attached to the bar processing machine 4. As shown in FIG. 5, the bar stocking apparatus 10 includes a roller 38 arranged in a pair on the left and right with respect to the feed axis OO of the feed arrow 14, and the roller 38 from the peripheral surface of the bar. It has the movement means 40 for moving between the released release position (refer FIG. 5) spaced apart, and the closed position which grips the surrounding surface of a bar. The moving means 40 is a cylinder having an opening / closing mechanism 42, as in the feed arrow steadying device 2 shown in FIGS. 3 and 4. The two pairs of rollers 38 are respectively attached to the opening / closing mechanism 30 via attachment brackets 44 on the left and right sides with respect to the feed axis OO of the feed arrow 14.
[0021]
In the state where the roller 38 is in the release position shown in FIG. 5, the bar is bent by its own weight, and its longitudinal center axis is located below the feed axis OO, but the roller 38 is in the release position shown in FIG. When the rod is moved from the position to the closed position (not shown), the bar is guided upward by the peripheral surface of the lower roller 38, and in the closed position, the longitudinal center axis of the bar and the feed axis OO Is raised to a concentric position.
The bar stocking apparatus 10 shown in FIG. 5 has a distance changing means 46 for changing the distance between the rollers arranged on the opposite sides of the feeding axis to correspond to the diameter of the bar to be processed. . This interval changing means 32 has the same structure as that of the feed arrow steadying device 2.
[0022]
Next, the operations of the feed arrow steadying device 2 and the bar steadying devices 10 and 22 will be described step by step in relation to the position of the finger chuck.
In the initial state, the bar stocking devices 10 and 22 attached to the bar supply machine 6 and the bar processing machine 4 are in the release position, and the feed arrow is attached to the bar processing machine 4. The device 2 is in the spaced position.
In the guide rail, the feed arrow 14 is advanced toward the bar supplied from the material shelf (not shown), and the rear end portion of the bar is inserted into the finger chuck to be gripped. The feed arrow 14 is advanced, and the front end of the bar is inserted into the main shaft 8.
[0023]
Hereinafter, the operation will be described step by step according to the positional relationship between the finger chuck 18, the bar stocking devices 10 and 22, and the feed arrow stocking device 2.
[0024]
1. Until the finger chuck 18 reaches the bar stocking device 22 provided in the bar supply machine 6
The collet chuck provided at the front end of the main shaft 8 is closed, and the tip of the bar is gripped. Further, the bar stocking devices 22 and 10 provided in the bar stocking machine 6 and the bar processing machine 4 are closed to grip the bar material, so that the bar material is prevented from shaking during the bar processing. When the machining of the part is completed, the collet chuck and the bar rocking devices 22 and 10 are released, the bar moves forward, and the part is cut off. Subsequently, the collet chuck is closed, and the bar stoppers 22 and 10 are closed to process the bar. This operation is repeated. During this time, the feed arrow steadying device 2 is maintained at the separated position and does not move to the holding position.
[0026]
2. After the finger chuck 18 reaches the bar stocking device 22 provided in the bar material supply machine 6, it passes through the feed arrow stocking device 2.
The collet chuck is closed and the tip of the bar is gripped. Since the bar has passed, the bar stopper 22 provided in the bar feeder 6 is maintained in the released position thereafter until the processing of the entire bar is completed. The bar stocking apparatus 10 provided in the bar processing machine 4 closes and grips the bar, and the bar is prevented from shaking during the bar processing. When the machining of the part is completed, the collet chuck and the bar rocking device 10 are moved to the release position, the bar is advanced, and the part is cut off. Subsequently, the collet chuck is closed, and the bar stocking apparatus 10 is closed to process the bar. This operation is repeated. During this time, the feed arrow steadying device 2 is maintained at the separated position and does not move to the holding position.
[0028]
3. After the finger chuck 18 passes through the feed arrow steadying device 2, until it reaches the bar steadying device 10 provided in the bar processing machine 4.
The collet chuck is closed and the tip of the bar is gripped. The bar stocking apparatus 10 provided in the bar processing machine 4 closes and grips the bar, and the bar is prevented from shaking during the bar processing. Further, the feed arrow steadying device 2 moves to the holding position and holds the main body portion 16 of the feed arrow 14. Thereafter, the feed arrow steadying device 2 is maintained at the holding position even during advancement of the feed arrow 14 until the processing of the entire bar is completed. When the machining of the part is completed, the collet chuck and the bar stocking device 10 are moved to the release position, the bar is advanced, and the part is cut off. The feed arrow 14 slides forward along the sliding surface 26 of the feed arrow steadying device 2. Subsequently, the collet chuck is closed, and the bar stocking apparatus 10 is closed to process the bar. This operation is repeated.
[0030]
4). After the finger chuck 10 reaches the bar stocking device 10 provided in the bar processing machine 4
The collet chuck is closed and the tip of the bar is gripped. Since the bar has passed, the bar stopper device 10 provided in the bar processing machine 4 is maintained in the released position thereafter until the processing of the entire bar is completed. Further, the feed arrow steadying device 2 is maintained in the holding position. When the machining of the part is completed, the collet chuck is opened, the bar is advanced, and the part is cut off. The feed arrow 14 slides forward along the sliding surface 26 of the feed arrow steadying device 2. Subsequently, the collet chuck is closed and the bar is processed. This operation is repeated until the processing of the remaining bar is completed.
[0032]
The present invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.
For example, the bar processing machine 4 is a main shaft moving type, but the feed arrow anti-vibration device 2 may be provided in the main shaft fixing type bar processing machine 4.
Further, the feed arrow steadying device 2 may be provided in the bar feeder 6. In this case, in order to hold the feed arrow 14 at a position close to the main shaft 8, it is preferably provided at the tip of the bar feeder 6.
[0033]
Further, in the present embodiment, the holding member 24 of the feed arrow steadying device 2 is a plate member, but the holding member 24 has another shape as long as it has a sliding surface 26 that holds the feed arrow 14. For example, a member having a shape obtained by dividing a hollow tube having an inner diameter substantially the same as the outer diameter of the main body portion 16 of the feed arrow 14 in the longitudinal direction is adopted as the clamping member 24, and its inner peripheral surface The sliding surface 26 may be used.
Further, in the present embodiment, the sliding surface 26 has a horizontal V shape, but the concave portion may have another shape or may have a curved surface.
Further, the feed arrow 14 may be a feed member having any structure for feeding a bar. Corresponding to the outer diameter of the main body portion 16 of the feed arrow 14, the distance between the sliding surfaces 26 of the feed arrow steadying device 2 may be changed by the interval changing means 32.
Furthermore, the bar-type anti-vibration device 10 may employ a belt-type anti-vibration device instead of the roller-type anti-vibration device.
[0034]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the steadying apparatus for preventing the swing of a sending arrow can be provided.
[Brief description of the drawings]
FIG. 1 is a side view of a bar processing machine to which a feed arrow steadying device according to the present embodiment is attached, and a bar supply unit for supplying bar to the bar processing machine.
FIG. 2 is a partially enlarged view of the II portion shown in FIG.
FIG. 3 shows a state in which the holding member of the feed arrow steadying device is in the separated position.
FIG. 4 shows a state in which the holding member of the feed arrow steadying device is in the holding position.
FIG. 5 shows a bar swinging device.
[Explanation of symbols]
2 Feed arrow anti-vibration device 4 Bar material processing machine 6 Bar material feeder 8 Main shaft 10 Bar material anti-vibration device 14 Feed arrow 16 Main body 18 Bar material support 22 Bar material anti-vibration device 24 Nipping member 26 Sliding surface O -O Feed axis XX Symmetric axis

Claims (2)

棒材が、棒材供給機の送り矢によって給送軸線上で後方から押されて給送される、主軸移動式の棒材加工機であって、前記送り矢は回転しない本体部と、該本体部の先端に回転自在に設けられたフィンガーチャックとを有し、
棒材の給送方向に対して主軸の後側に、前記送り矢の前記本体部の振れを防止するための送り矢用振止め装置が、前記主軸と共に移動可能に取付けられており、該送り矢用振止め装置は、前記送り矢の給送軸線に対して互いに反対側に配置された複数の挟持部材を有し、該挟持部材の前記送り矢の周面と対向する部分に、前記送り矢の前記本体部の横方向への振れを阻止して前記給送軸線上に保持し、且つ、前記送り矢の給送方向への移動を許容するように、前記本体部の周面を前記給送方向に摺動可能に保持する摺動面が形成されており、また、前記挟持部材は、前記摺動面が前記送り矢の周面から離間した離間位置と、前記送り矢の周面を保持する保持位置との間で移動され、
棒材を前記送り矢によって前進させる過程で、前記フィンガーチャックが前記送り矢用振止め装置を通過するまでは、前記送り矢用振止め装置の前記挟持部材は前記離間位置に維持され、また、前記フィンガーチャックが通過した後においては、前記送り矢用振止め装置の前記挟持部材は前記保持位置に維持され、棒材の前方への移動時においては、前記送り矢の前記本体部は前記摺動面に沿って摺動して前進し、
更に、前記主軸と前記送り矢用振止め装置との間に、棒材の振れを防止するための棒材振止め装置が、前記主軸と共に移動可能に取付けられており、
棒材を送り矢によって前進させる過程で、前記棒材振止め装置によって棒材を把持可能な間は、棒材加工中と棒材前進中のそれぞれにおいて、前記棒材振止め装置が、棒材を把持する閉じ動作と棒材を解放する解放動作とを繰返し、この間、前記送り矢用振止め装置の前記挟持部材は前記離間位置に維持され、また、棒材が前記棒材振止め装置を通過し、該棒材振止め装置によって棒材を把持することができないとき、棒材の残余の部分の加工が終了するまでの間、前記棒材振止め装置を解放し、また、前記送り矢用振止め装置の前記挟持部材は前記保持位置に維持される、ことを特徴とする棒材加工機。
A bar material is a main shaft moving type bar material processing machine, in which the bar material is pushed and fed from behind on a feed axis by a feed arrow of a bar material feeder, and the feed arrow does not rotate, A finger chuck rotatably provided at the tip of the main body,
On the rear side of the main shaft with respect to the feeding direction of the bar material, a feed arrow anti-spinning device for preventing the main body portion of the feed arrow from swinging is attached together with the main shaft. The arrow steadying device has a plurality of clamping members arranged on opposite sides with respect to the feeding axis of the feeding arrow, and the feeding member is disposed on a portion of the clamping member facing the circumferential surface of the feeding arrow. The peripheral surface of the main body portion is configured to prevent the arrow from swinging in the lateral direction and hold it on the feeding axis, and to allow the feeding arrow to move in the feeding direction. A sliding surface that is slidably held in the feeding direction is formed, and the clamping member includes a separation position where the sliding surface is separated from the circumferential surface of the feeding arrow, and a circumferential surface of the feeding arrow Moved between the holding position and
In the process of advancing the bar with the feed arrow, the clamping member of the feed arrow steadying device is maintained in the separated position until the finger chuck passes the feed arrow steadying device, After the finger chuck has passed, the holding member of the feed arrow steadying device is maintained in the holding position, and when the bar is moved forward, the main body portion of the feed arrow is slid. Sliding forward along the moving surface,
Furthermore, between the main shaft and the feed arrow anti-vibration device, a bar anti-vibration device for preventing the deflection of the bar is attached movably with the main shaft,
While the bar material can be held by the bar material anti-vibration device in the process of advancing the bar material, the bar material anti-vibration device is used for the bar material during the bar material processing and during the bar material advancement. The closing operation for holding the bar and the releasing operation for releasing the bar are repeated. During this time, the holding member of the feed arrow bracing device is maintained at the separated position, and the bar is used for the bar bracing device. When the bar is passed and cannot be gripped by the bar stopper, the bar stopper is released until the processing of the remaining portion of the bar is completed, and the feed arrow The bar processing machine according to claim 1, wherein the holding member of the anti-vibration device is maintained at the holding position.
前記挟持部材の前記送り矢の周面と対向する部分に、前記摺動面が、前記送り矢を受入れ可能な凹状を成して形成されており、前記凹状の摺動面は、対称軸線を中心として対称な横V字形を成し、前記対称軸線は前記給送軸線を通る、ことを特徴とする請求項1に記載の棒材加工機。  The sliding surface is formed in a concave shape capable of receiving the feeding arrow at a portion facing the circumferential surface of the feeding arrow of the clamping member, and the concave sliding surface has an axis of symmetry. 2. The bar processing machine according to claim 1, wherein the bar processing machine has a symmetrical horizontal V shape as a center, and the symmetry axis passes through the feeding axis.
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