JP3834493B2

JP3834493B2 - Compound grinding method and apparatus

Info

Publication number: JP3834493B2
Application number: JP2001283547A
Authority: JP
Inventors: 公裕坂; 誠司各務; 弘幸鳥居
Original assignee: JTEKT Corp
Current assignee: JTEKT Corp
Priority date: 2001-09-18
Filing date: 2001-09-18
Publication date: 2006-10-18
Anticipated expiration: 2021-09-18
Also published as: JP2003094300A

Description

【０００１】
【発明の属する技術分野】
本発明は、砥石車を用いて工作物を複合研削する方法及び装置に関する。
【０００２】
【従来の技術】
従来、ツールホルダ等のＶ溝、外周面、端面及びテーパ面を研削する場合には、図１に示すように、プレーンタイプの円筒研削盤によりＶ溝１及び外周面２を研削し、アンギュラタイプの円筒研削盤により端面３及びテーパ部４の研削を行うことが一般的に知られている。
【０００３】
【発明が解決しようとする課題】
上記、従来の研削方法及び装置においては、Ｖ溝及び外周面を専用に研削するプレーンタイプ円筒研削盤と端面及びテーパ部を専用に研削するアンギュラタイプ円筒研削盤の２台が必要で、設備投資費が高くなり、Ｖ溝及び外周面の研削と端面及びテーパ部の研削を別の研削盤で行うので、工作物をチャックし直さなければならず、寸法のバラツキが生じ易く、かつ研削加工のサイクルタイムが長くなる問題があった。
【０００４】
【課題を解決するための手段】
上記の課題を解決するため、請求項１に記載の発明の構成上の特徴は、軸線に対して第１角度をなす第１側面を有し、該第１角度より小さい第２角度をなす第２側面と前記第１角度より大きい第３角度をなす第３側面とにより形成されるＶ溝が前記第１側面から軸線方向に所定距離隔てて形成された工作物を前記工作物軸線回りに支持して回転駆動し、前記第１及び第３側面に対応する寸法にドレスされた第１及び第３研削側面と、前記第２側面に対応する寸法に対して軸線方向送り研削代だけ多くドレスされた第２研削側面が形成された砥石車を前記工作物に対して前記第２角度より大きく前記第１角度より小さい移動角度で前進端位置まで相対的に送り移動させて、前記第１側面及び前記第３側面を前記第１研削側面及び第３研削側面により所定寸法に研削加工するとともに、前記第２側面を所定寸法に対して前記軸線方向送り研削代だけ残して前記第２研削側面により研削加工し、前記砥石車が前進端位置に位置した状態で前記工作物と前記砥石車とを前記軸線方向に相対的に送り移動させて前記第２側面を前記第２研削側面により前記軸線方向送り研削代だけ研削加工することである。
【０００５】
請求項２に係る発明の構成上の特徴は、軸線方向に延在する第１外周面、該第１外周面から前記軸線に対して第１角度で半径方向に延出する第１側面、該第１角度より小さい第２角度で延出する第２側面と前記第１角度より大きい第３角度で延出する第３側面とにより形成されるＶ溝、前記第１及び第２側面の延出端を接続する第２外周面、前記Ｖ溝底部をなす第３外周面及び前記第３外側面の延出端に接続する第４外周面が形成された工作物を前記工作物軸線回りに支持して回転駆動し、前記第１及び第３側面に対応する寸法にドレスされた第１及び第３研削面と、前記第２側面に対応する寸法に対して軸線方向送り研削代だけ多くドレスされた第２研削側面と、前記第１乃至第４外周面に夫々対応する第１乃至第４研削外周面が形成された砥石車を前記工作物に対して前記第２角度より大きく前記第１角度より小さい移動角度で前進端位置まで相対的に送り移動させて、前記第１側面、前記第３側面及び前記第１乃至第４外周面を前記第１研削側面、第３研削側面及び第１乃至第４研削外周面により所定寸法に研削加工するとともに、前記第２側面を所定寸法に対して前記軸線方向送り研削代だけ残して前記第２研削側面により研削加工し、前記砥石車が前進端位置に位置した状態で前記工作物と前記砥石車とを前記軸線方向に相対的に送り移動させて前記第２側面を前記第２研削側面により前記軸線方向送り研削代だけ研削加工することである。
【０００６】
請求項３に係る発明の構成上の特徴は、請求項２に記載の複合研削方法において、前記砥石車を前記工作物に対して前記移動角度で相対的に送り移動させ、前記第１外周研削面により研削加工される前記第１外周面の外径が所定寸法になったことを検出する測定装置からの信号により前記砥石車を前記前進端位置に停止させることである。
【０００７】
請求項４に係る発明の構成上の特徴は、請求項１乃至３のいずれかに記載した複合研削方法において、前記工作物の前記第１乃至第３側面に対応する第１乃至第３ドレス側面が形成されたドレッサを前記工作物軸線と平行な軸線回りに支持して回転駆動し、前記砥石車を前記ドレッサに対して前記軸線と直角な方向にドレス前進端位置まで相対的にドレス送り移動させて、前記研石車の前記第１研削側面及び前記第３研削側面を前記第１ドレス側面及び第３ドレス側面により所定寸法にドレスするとともに、前記第２研削側面を前記第２ドレス側面によりドレスし、前記砥石車がドレス前進端位置に位置した状態で前記ドレッサと前記砥石車とを前記軸線方向に相対的にドレス送り移動させて前記第２研削側面を前記第２ドレス側面により前記軸線方向送り研削代だけ多くドレスすることである。
【０００８】
請求項５に係る発明の構成上の特徴は、軸線に対して第１角度をなす第１側面を有し、該第１角度より小さい第２角度をなす第２側面と前記第１角度より大きい第３角度をなす第３側面とにより形成されるＶ溝が前記第１側面から軸線方向に所定距離隔てて形成された工作物を前記工作物軸線回りに支持して回転駆動する工作物支持装置と、前記第１及び第３側面に対応する寸法にドレスされた第１及び第３研削面と、前記第２側面に対応する寸法に対して軸線方向送り研削代だけ多くドレスされた第２研削側面が形成された砥石車を支承して回転駆動する砥石台と、前記第２角度より大きく前記第１角度より小さい移動角度で前記砥石台を工作物支持装置に対して相対的に移動させる第１移動手段と、前記工作物支持装置と前記砥石台とを前記軸線方向に相対的に移動させる第２移動手段と、前記砥石台を前記工作物支持装置に対して前記第１移動手段により前記移動角度で前進端位置まで相対的に送り移動させて、前記第１側面及び前記第３側面を前記第１研削側面及び第３研削側面により所定寸法に研削加工するとともに、前記第２側面を所定寸法に対して前記軸線方向送り研削代だけ残して前記第２研削側面により研削加工する第１送り制御手段と、前記砥石台が前進端位置に位置した状態で前記工作物支持装置を前記第２移動手段により前記砥石台に対して前記軸線方向に送り移動させて前記第２側面を前記第２研削側面により前記軸線方向送り研削代だけ研削加工する第２送り制御手段とを備えたことである。
【０００９】
請求項６に係る発明の構成上の特徴は、軸線方向に延在する第１外周面、該第１外周面から前記軸線に対して第１角度で半径方向に延出する第１側面、該第１角度より小さい第２角度で延出する第２側面と前記第１角度より大きい第３角度で延出する第３側面とにより形成されるＶ溝、前記第１及び第２側面の延出端を接続する第２外周面、前記Ｖ溝底部をなす第３外周面及び前記第３外側面の延出端に接続する第４外周面が形成された工作物を前記工作物軸線回りに支持して回転駆動する工作物支持装置と、前記第１及び第３側面に対応する寸法にドレスされた第１及び第３研削面と、前記第２側面に対応する寸法に対して軸線方向送り研削代だけ多くドレスされた第２研削側面と、前記第１乃至第４外周面に夫々対応する第１乃至第４研削外周面が形成された砥石車を支承して回転駆動する砥石台と、前記第２角度より大きく前記第１角度より小さい移動角度で前記砥石台を工作物支持装置に対して相対的に移動させる第１移動手段と、前記工作物支持装置と前記砥石台とを前記軸線方向に相対的に移動させる第２移動手段と、前記砥石台を前記工作物支持装置に対して前記第１移動手段により前記移動角度で前進端位置まで相対的に送り移動させて、前記第１側面、前記第３側面及び前記第１乃至第４外周面を前記第１研削側面、第３研削側面及び第１乃至第４研削外周面により所定寸法に研削加工するとともに、前記第２側面を所定寸法に対して前記軸線方向送り研削代だけ残して前記第２研削側面により研削加工する第１送り制御手段と、前記砥石台が前進端位置に位置した状態で前記工作物支持装置と前記砥石台とを前記第２移動手段により前記軸線方向に相対的に送り移動させて前記第２側面を前記第２研削側面により前記軸線方向送り研削代だけ研削加工する第２送り制御手段とを備えたことである。
【００１０】
請求項７に係る発明の構成上の特徴は、請求項６に記載の複合研削装置において、前記第１移動手段は、前記第１外周研削面により研削加工される前記第１外周面の外径が所定寸法になったことを検出する測定装置からの信号により前記砥石車を前記前進端位置に停止させることである。
【００１１】
【発明の作用・効果】
上記のように構成した請求項１に係る発明においては、第１側面を有し、第２側面と第３側面とによりＶ溝が形成された工作物を工作物軸線回りに回転駆動し、第１乃至第３研削側面を有する砥石車を工作物に対して軸線が第２側面となす第２角度より大きく第１側面となす第１角度より小さい移動角度で前進端位置まで相対的に送り移動させて、第１側面及び第３側面を第１研削側面及び第３研削側面により所定寸法に研削加工するとともに、第２側面を軸線方向送り研削代だけ残して第２研削側面により研削加工し、砥石車が前進端位置に位置した状態で工作物と砥石車とを軸線方向に相対的に送り移動させて第２側面を第２研削側面により軸線方向送り研削代だけ研削加工するので、１台の研削装置で第１側面とＶ溝を形成する第２，第３側面を研削することが可能で設備投資費を低く押さえることができ、研削工程が２台の研削盤に分割されていないので研削工程間に生じる寸法のバラツキをなくすことができる。
【００１２】
上記のように構成した請求項２に係る発明においては、第１側面を有し、第２側面と第３側面とによりＶ溝が形成され、第１乃至第３側面に接続する第１乃至第４外周面を有する工作物を工作物軸線回りに回転駆動し、第１乃至第３研削側面及び第１乃至第４研削外周面が形成された砥石車を工作物に対して軸線が第２側面となす第２角度より大きく第１側面となす第１角度より小さい移動角度で前進端位置まで相対的に送り移動させて、第１側面、第３側面及び第１乃至第４外周面を第１研削側面、第３研削側面及び第１乃至第４研削外周面により所定寸法に研削加工し、第２側面を所定寸法に対して軸線方向送り研削代だけ残して第２研削側面により研削加工し、砥石車が前進端位置に位置した状態で工作物と砥石車とを軸線方向に相対的に送り移動させて第２側面を第２研削側面により軸線方向送り研削代だけ研削加工するので、１台の研削装置で複合面を研削をすることが可能で設備投資費を低く押さえることができる。また、第１乃至第３側面及び第１乃至第４外周面を１台の研削盤で高精度に短時間に研削加工することができる。
【００１３】
上記のように構成した請求項３に係る発明においては、砥石車を工作物に対して所定の移動角度で相対的に送り移動させて第１外周面の外径が所定寸法になったことを測定装置で検出して、砥石車を前進端位置に正確に停止させるので、第１外周面の高い寸法精度を確保することができるとともに、複合研削による他の部位の高い寸法精度も確保することができる。
【００１４】
上記のように構成した請求項４に係る発明においては、ドレッサの第１乃至第３ドレス側面を工作物軸線と平行な軸線回りに回転駆動し、砥石車をドレッサに対して前記軸線と直角な方向にドレス前進端位置まで相対的にドレス送り移動させて、研石車の第１研削側面及び第３研削側面を第１ドレス側面及び第３ドレス側面により所定寸法にドレスするとともに、第２研削側面を第２ドレス側面によりドレスし、砥石車がドレス前進端位置に位置した状態でドレッサと砥石車とを軸線方向に相対的にドレス送り移動させ、砥石車の前進端位置における軸線方向相対送りにより第２研削面が工作物の第２側面を研削する軸線方向送り研削代に応じた量だけ第２研削側面を第２ドレス側面によりドレスするので、複合研削面を有する砥石車を高精度に効率的にドレスすることができる。
【００１５】
上記のように構成した請求項５に係る発明においては、第１側面を有し、第２側面と第３側面とによりＶ溝が形成された工作物を工作物支持装置により工作物軸線回りに回転駆動し、第１乃至第３研削側面が形成された砥石車を砥石台に支承して回転駆動し、第１移動手段により軸線が第２側面となす第２角度より大きく第１側面となす第１角度より小さい移動角度で砥石台を工作物支持装置に対して相対的に送り移動させて、第１側面及び第３側面を第１研削側面及び第３研削側面により所定寸法に研削加工するとともに、第２側面を所定寸法に対して軸線方向送り研削代だけ残して第２研削側面により研削加工し、砥石台が前進端位置に位置した状態で工作物支持装置を砥石台に対して軸線方向に相対的に送り移動させて第２側面を第２研削側面により軸線方向送り研削代だけ研削加工するので、１台の研削装置で第１側面とＶ溝を形成する第２，第３側面を研削することが可能で設備投資費を低く押さえることができ、研削工程が２台の研削盤に分割されていないので研削工程間に生じる寸法のバラツキをなくすことができる。
【００１６】
上記のように構成した請求項６に係る発明においては、第１側面を有し、第２側面と第３側面とによりＶ溝が形成され、第１乃至第３側面に接続する第１乃至第４外周面を有する工作物を工作物支持装置により工作物軸線回りに回転駆動し、第１乃至第３研削側面及び第１乃至第４研削外周面が形成された砥石車を砥石台に支承して回転駆動し、第１移動手段により軸線が第２側面となす第２角度より大きく第１側面となす第１角度より小さい移動角度で砥石台を工作物支持装置に対し相対的に送り移動させて、第１側面及び第３側面及び第１乃至第４外周面を第１研削側面、第３研削側面及び第１乃至第４研削外周面により所定寸法に研削加工するとともに、第２側面を所定寸法に対して軸線方向送り研削代だけ残して第２研削側面により研削加工し、砥石台が前進端位置に位置した状態で工作物支持装置を砥石台に対して軸線方向に相対的に移動させて、第２側面を第２研削側面により軸線方向送り研削代だけ研削加工するので、１台の研削装置で複合面を研削することが可能で設備投資費を低く押さえることができるとともに、第１乃至第３側面及び第１乃至第４外周面を１台の研削盤で高精度に短時間に研削加工することができる。
【００１７】
上記のように構成した請求項７に係る発明においては、第１移動手段は、第１外周面の外径が所定寸法になったことを測定装置が検出し、その信号により砥石車を前進端位置に停止させるので、第１外周面の高い寸法精度を確保することができるとともに、複合研削による他の部位の高い寸法精度も確保することができる。
【００１８】
【実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。図２において、１０は工作物ＷであるツールホルダのＶ溝やテーパ部等の側面及び外周面を同時に研削することができる複合研削装置であり、Ｔ字型のベッド１５上のＸ軸方向（左右方向）に工作物支持装置１６、Ｚ軸方向（前後方向）に砥石台１７が摺動可能に載置されている。
【００１９】
工作物支持装置１６は、Ｔ字型のベッド１５上にＸ軸方向に延在されたＸ軸ガイドレール２４，２５上にテーブル２６が摺動可能に載置され、該テーブル２６上に主軸台３５及び心押台３６が載置されて構成されている。主軸台３５のセンタ軸の先端には超硬センタ３７が取り付けられ、心押台３６に取り付けられている超硬センタ３８との間で工作物Ｗを支持する。センタ軸には回転面板４０が回転可能に支承され、該回転面板４０が主軸モータ３４により回転駆動されて回し金を介して工作物ＷをＸ軸線回りに回転するようになっている。
【００２０】
工作物Ｗは、図３に示すように、軸線方向に延在するテーパ状の第１外周面１１、該第１外周面１１から軸線に対して９０度である第１角度αで半径方向に延出する第１側面２１、該第１角度α（９０度）より小さい６０度である第２角度βで延出する第２側面２２と第１角度α（９０度）より大きい１２０度である第３角度γで延出する第３側面２３とにより形成されるＶ溝、第１側面２１及び第２側面２２の延出端を接続する第２外周面１２、Ｖ溝底部をなす第３外周面１３及び第３側面２３の延出端に接続する第４外周面１４で形成されている。
【００２１】
Ｔ字型ベッド１５上に傾斜して固定された砥石台ベース４１上には、Ｘ軸方向に対して第２角度β（６０度）より大きく第１角度α（９０度）より小さい角度をなすＺ軸方向に延在するＺ軸ガイドレール４２，４３が設けられ、砥石台１７はＺ軸ガイドレール４２，４３上に摺動可能に載置されている。砥石台１７には砥石軸７が回転可能に軸承され、砥石軸７の先端に砥石車Ｇが装着され、砥石軸７は砥石モータ６により回転駆動される。砥石車Ｇの外周面には、工作物Ｗの第１乃至第３側面２１〜２３及び第１乃至第４外周面１１〜１４に対応する第１乃至第３研削側面７１〜７３及び第１乃至第４研削外周面６１〜６４が形成されている。
【００２２】
砥石台１７は、Ｚ軸サーボモータ４５によりボールネジ機構４６を介してＺ軸ガイドレール４２，４３上をＺ軸方向に工作物支持装置１６に対して相対的に移動される。Ｚ軸ガイドレール４２，４３、Ｚ軸サーボモータ４５及びボールネジ機構４６等によって、第２角度β（６０度）より大きく第１角度α（９０度）より小さい移動角度で砥石台１７を工作物支持装置１６に対して相対的に移動させる第１移動手段２０が構成される。工作物支持装置１６のテーブル２６は、Ｘ軸サーボモータ２８によりボールネジ機構２９を介してＸ軸ガイドレール２４，２５上をＸ軸方向に砥石台１７と相対的に移動される。Ｘ軸ガイドレール２４，２５、Ｘ軸サーボモータ２８及びボールネジ機構２９によって、工作物支持装置１６と砥石台１７とを軸線方向に相対的に移動させる第２移動手段３０が構成される。
【００２３】
Ｔ字型ベッド１５上で工作物支持装置１６を挟んで砥石台１７と反対側前面の中央付近には測定装置１８が取り付けられている。測定装置１８は、工作物Ｗの第１側面２１に接触して工作物ＷのＸ軸方向位置を測定する端面測定装置８と第１外周面１１の外径を研削中に測定する外径測定装置９とにより構成されている。端面測定装置８及び外径測定装置９は図略の進退装置によって側定位置と退避位置との間で夫々進退可能となっている。端面測定装置８及び外形測定装置９は測定位置において測定子が工作物Ｗの第１側面２１及び第１外周面１１の外径に接触し、内蔵されている差動トランスが接触子の変位量を電気的に検出して電気信号として第１側面２１のＸ軸方向の位置及び第１外周面１１の外径を後述の数値制御装置５１へ出力するようになっている。外径測定装置９は、工作物Ｗの第１外周面１１の外径が砥石車Ｇの第１研削外周面６１により所定寸法に研削されたことを検出し、後述の数値制御装置５１に信号をフィードバックして、砥石車Ｇを前進端位置６０に停止させる。
【００２４】
数値制御装置５１には、制御指令及び加工条件等を入力する入力装置５０が接続されており、第１，第２送り制御手段５２，５３及び第１，第２ドレス送り制御手段５４，５５を備えている。各送り制御手段５２〜５５は、インターフェース５６を介してＸ軸及びＺ軸駆動回路５７，５８からＸ軸及びＺ軸サーボモータ２８，４５に駆動信号を発信するとともに、Ｘ軸及びＺ軸サーボモータ２８，４５の回転から工作物支持装置１６及び砥石台１７のＸ軸及びＺ軸方向位置をＸ軸及びＺ軸エンコーダ２７，４４により検出しインターフェース５６を介して数値制御装置５１にフィードバックするようになっている。第１送り制御手段５２は、第１移動手段２０により砥石台１７を第２角度より大きく第１角度より小さい移動角度で前進端位置６０まで工作物支持装置１６に対して相対的に送り移動して、工作物Ｗの第１側面２１、第３側面２３及び第1乃至第４外周面１１〜１４を砥石車Ｇの第１研削側面７１、第３研削側面７３及び第１乃至第４研削外周側面６１〜６４により所定寸法に研削加工するとともに、図４に示すように、第２側面２２を所定寸法に対して後述する軸線方向送り研削代（ｄ₂₂）残して（ｄ₂₁）だけ研削加工する。
【００２５】
第２送り制御手段５３は、砥石台１７が前進端位置６０に位置した状態で、工作物支持装置１６と砥石台１７とを軸線方向、即ちＸ軸方向に相対的に送り移動させて、工作物Ｗの第２側面２２を砥石車Ｇの第２研削側面７２により残りの軸線方向送り研削代（ｄ₂₂）だけ研削加工するようになっている。このときの砥石台１７と工作物支持装置１６とのＸ軸線方向の相対移動量（Ｌ）は、第２角度はβ度であるので、Ｌ＝ｄ₂₂／ｓｉｎαとなる。
【００２６】
ドレッサ装置１９はドレッサ台３１に回転軸３３が回転可能に支承され、回転軸３３の先端にダイヤモンドロールＤが装着されている。ドレッサ台３１は、工作物支持装置１６の主軸台３５に固着され、回転軸３３がドレッサ駆動モータ４７により駆動されてダイヤモンドロールＤが工作物軸線と平行なＸ軸線回りに回転駆動される。ダイヤモンドロールＤには、図５に示すように、砥石車Ｇの第１乃至第３研削側面７１〜７３をドレスするための第１乃至第３ドレス側面７４〜７６、第２乃至第４研削外周面６２〜６４をドレスするための第２乃至第４ドレス外周面６５〜６７及び第１研削外周面６１をドレスするための大径テーパ状の第１ドレス外周面６８が形成されている。第１乃至第３ドレス側面７４〜７６及び第２乃至第４ドレス外周面６５〜６７の断面位置寸法は、工作物Ｗの第１乃至第３側面２１〜２３及び第２乃至第４外周面１２〜１４の断面位置寸法と同一である。第１ドレス送り手段５４は、第１移動手段２０により砥石台１７を工作物支持装置１６に対して相対的に送り移動させて砥石車Ｇの第１研削側面７１及び第３研削側面７３を第１ドレス側面７４及び第３ドレス側面７６により所定寸法にドレスし、第２研削側面７２を第２ドレス側面７５により所定量ドレスする。第２ドレス送り制御手段５５は、第１ドレス送り制御手段５４により、ドレス前進端位置６９に砥石車Ｇが到達した状態で、工作物支持装置１６と砥石台１７を第２移動手段３０によりＸ軸線方向に相対的にドレス送り移動させて第２研削側面７２を第２ドレス側面７５により軸線方向送り研削代（ｄ₂₂）に応じた量だけドレスする。
【００２７】
上記のように構成した複合研削装置の作動を複合研削方法とともに、図６に示す複合研削装置の作動のフローチャートに基づいて説明する。先ず、作業者が工作物Ｗを工作物支持装置１６の主軸台３５の超硬センタ３７と心押台３６の超硬センタ３８との間に取り付け、回し金で回転面板４０に取り付ける。次に、数値制御装置５１に取り付けられているスタート釦を押すことにより、工作物Ｗの研削サイクルがスタートする。工作物ＷをＸ軸方向に位置決めするために、測定装置１８の端面測定装置８が側定位置に前進され、工作物支持装置１６がＸ軸サーボモータ２８により右方に移動される。工作物Ｗの第１側面２１が端面測定装置８の測定子に接触して第１側面２１のＸ軸方向の位置が検出され、数値制御装置５１に送信されて研削位置と比較される。第１側面２１が研削位置に移動して端面測定装置８からの検出信号が研削位置と一致すると、数値制御装置５１はＸ軸サーボモータ２８を停止して工作物支持装置１６延いては工作物Ｗを研削位置に位置決めする（ステップ７７）。工作物ＷのＸ軸方向位置決めが完了すると端面測定装置８は退避位置に後退し、主軸モータ３４が駆動されて工作物Ｗが回転面板４０により回し金を介して回転駆動される（ステップ７８）。
【００２８】
Ｚ軸サーボモータ４５が駆動され、ボールネジ機構４６を介して砥石台１７がＺ軸ガイドレール４２，４３に案内されて工作物Ｗに向かって早送り速度、粗研削送り速度、精研削送り速度で前進され(ステップ７９)、砥石モータ６により回転駆動されている砥石車Ｇの第１乃至第３研削側面７１〜７３及び第１乃至第４研削外周面６１〜６４が工作物Ｗの第１乃至第３側面２１〜２３及び第１乃至第４外周面１１〜１４を粗研削及び精研削加工する(ステップ８０)。第１研削外周面６１が第１外周面１１を僅かに粗研削して黒皮を除去したとき、外径測定装置９が測定位置に前進されて接触子が第１外周面１１に接触してその外径を測定し、第１外周面１１の外径に対応する電気信号を数値制御装置５１に送信する。数値制御装置５１は外径測定装置９から入力される第１外周面１１の外径に応じて砥石台１７の送り速度を粗研削送り速度から精研削送り速度に変え、第１外周面１１の外径が所定寸法になったときＺ軸サーボモータ４５を停止して砥石台１７延いては砥石車Ｇを前進端位置６０に停止させる（ステップ８１）。このとき、第２研削側面７２は、軸線方向送り研削代（ｄ₂₂）に相当する量だけ多くドレスされているので、第２側面２２は所定寸法に対して軸線送り研削代（ｄ₂₂）だけ残して第２研削側面７２により研削加工される。続いて、外径測定装置９が退避位置に後退した後、工作物支持装置１７を砥石台１６に対してＸ軸線方向に移動量Ｌ＝ｄ₂₂／ｓｉｎαだけ研削送りして第２側面を第２研削側面７２により所定寸法に仕上る（ステップ８２）。その後、砥石台１７が原位置に後退し、工作物支持装置１６が原位置に移動し、工作物Ｗの回転が停止されて（ステップ８３）、工作物Ｗの一連の複合研削加工が終了する。
【００２９】
次に砥石車Ｇのドレス方法及び装置について図７のフローチャートに基づいて説明する。数値制御装置５１にドレスのスタートを指令すると、砥石車Ｇのドレスサイクルがスタートする。工作物支持装置１６及び砥石台１７がドレス開始位置に位置決めされ、ドレスモータ４７が駆動されてダイヤモンドロールＤが回転駆動される（ステップ８５）。
【００３０】
Ｘ軸及びＺ軸サーボモータ２８，４５が同時２軸制御されて駆動され、ボールネジ機構２９，４６を介して工作物支持装置１６及び砥石台１７がＸ軸及びＺ軸ガイドレール２４，２５及び４２，４３に案内されて互いに関連して移動され、砥石モータ６により回転駆動される砥石車Ｇの第１研削外周面６１をダイヤモンドロールＤの第１ドレス外周面６８によりテーパ状にドレスする（ステップ８６）。第１研削外周面６１のドレス後、Ｘ軸及びＺ軸サーボモータ２８，４５の駆動により、第１乃至第３研削側面７１〜７３と第１乃至第３ドレス側面７４〜７６とがＸ軸線方向に整列して対向する図５に示す位置に工作物支持装置１６及び砥石台１７を位置決めする。次に、Ｘ軸及びＺ軸サーボモータ２８，４５を同時２軸制御して、砥石車ＧをダイヤモンドロールＤに対してＺ軸線と直角な方向に相対的に前進させ、第１研削側面７１を第１ドレス側面７４により端面ドレスし（ステップ８７）、前進端付近で第２、第３研削側面７２，７３及び第２乃至第４研削外周面６２〜６４を第２，第３ドレス側面７５，７６及び第２乃至第４ドレス外周面６５〜６７により所定寸法に総型ドレスする（ステップ８８）。前進端位置６９でＺ軸サーボモータ４５延いては砥石台１７を停止させ（ステップ８９）、工作物支持装置１６をＸ軸サーボモータ２８により左方にＸ軸線方向移動量Ｌ＝ｄ₂₂／ｓｉｎαだけ移動して第２研削側面７２を第２ドレス側面により軸線方向送り研削代（ｄ₂₂）だけドレスして所定寸法に仕上る（ステップ９０）。最後に端面７０と第１ドレス側面７４とをＸ軸線方向に整列させて、砥石車ＧをダイヤモンドロールＤに対して直角方向に前進させ、端面７０を第１ドレス側面７４により端面ドレスして砥石車Ｇのドレスを終了する（ステップ９１）。砥石台１７及び工作物支持装置１６が原位置に移動し、ダイヤモンドロールＤの回転が停止される（ステップ９２）。
【００３１】
なお、上記の実施形態では、工作物支持装置１６の軸線であるＸ軸に対して砥石台１７を第２角度β（６０度）より大きく第１角度α（９０度）より小さい移動角度でＺ軸方向に研削移動するようにＺ軸ガイドレール４２，４３を配置したが、Ｚ軸ガイドレールをＸ軸に対して直角に配置して、砥石台１７をＸ軸に対して直角なＺ軸方向に移動するようにし、工作物支持装置１６と砥石台１７の移動を数値制御により同時２軸制御して砥石台１７を工作物支持装置１６に対して前述の移動角度で相対的に送り移動させるようにしてもよい。
【図面の簡単な説明】
【図１】従来の分割された研削工程を示す図である。
【図２】本発明に係わる複合研削装置の平面図である。
【図３】砥石車により工作物を研削する関係を示す図である。
【図４】工作物の研削代を示す図である。
【図５】砥石車とダイヤモンドロールの関係を示す図である。
【図６】工作物の研削工程を示す図である。
【図７】砥石車のドレス工程を示す図である。
【符号の説明】
８・・・端面測定装置、９・・・外径測定装置、１０・・・複合研削装置、１１〜１４・・・第１〜第４外周面、１５・・・Ｔ字型ベッド、１６・・・工作物支持装置、１７・・・砥石台、１８・・・測定装置、１９・・・ドレッサ装置、２０・・・第１移動手段、２１〜２３・・・第１〜第３側面、２６・・・テーブル、３０・・・第２移動手段、３１・・・ドレッサ台、３５・・・主軸台、３６・・・心押台、４１・・・砥石台ベース、５１・・・数値制御装置、５２，５３・・・第１，第２送り制御手段、５４，５５・・・第１，第２ドレス送り制御手段、６０・・・前進端位置、６１〜６４・・・第１〜第４研削外周面、６５〜６８・・・第１〜第４ドレス外周側面、６９・・・ドレス前進端位置、７０・・・端面、７１〜７３・・・第１〜第３研削側面、７４〜７６・・・第１〜第３ドレス側面、α・・・第１角度、β・・・第２角度、γ・・・第３角度、Ｄ・・・ダイヤモンドロール、Ｇ・・・砥石車、ｄ₂₂・・・軸線方向送り研削代、Ｌ・・・軸線方向移動量、Ｗ・・・工作物。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and apparatus for complex grinding a workpiece using a grinding wheel.
[0002]
[Prior art]
Conventionally, when grinding V-grooves, outer peripheral surfaces, end surfaces and tapered surfaces of tool holders, etc., as shown in FIG. It is generally known that the end face 3 and the tapered portion 4 are ground by a cylindrical grinder.
[0003]
[Problems to be solved by the invention]
The conventional grinding method and apparatus described above require two units, a plain type cylindrical grinder that grinds the V-groove and outer peripheral surface exclusively, and an angular type cylindrical grinder that grinds the end surface and taper portion exclusively. The cost increases, and grinding of the V-groove and the outer peripheral surface and the grinding of the end face and the taper portion are performed by another grinding machine. Therefore, the workpiece must be re-chucked, and the dimensional variation is likely to occur. There was a problem that the cycle time became long.
[0004]
[Means for Solving the Problems]
  In order to solve the above-mentioned problem, the structural feature of the invention described in claim 1 is that a first side surface forming a first angle with respect to the axis has a first side which forms a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface having a third angle larger than the first angle is supported around the workpiece axis line and formed at a predetermined distance in the axial direction from the first side surface. And rotationally drive the firstas well asCorresponds to the third aspectFirst and third grinding side surfaces dressed in dimensions, and second grinding side surfaces dressed more by the axial feed grinding allowance than the dimensions corresponding to the second side surfacesIs moved relative to the work piece at a movement angle larger than the second angle and smaller than the first angle with respect to the workpiece, and the first side surface and the third side surface are moved. The first side surface and the third side surface are ground to a predetermined size, and the second side surface isSaidGrinding is performed by the second grinding side face while leaving only the axial feed grinding allowance, and the workpiece and the grinding wheel are relatively fed and moved in the axial direction in a state where the grinding wheel is located at the forward end position. The second side surface is ground by the second grinding side surface by the axial feed grinding allowance.
[0005]
  The structural feature of the invention according to claim 2 is that a first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, A V-groove formed by a second side surface extending at a second angle smaller than the first angle and a third side surface extending at a third angle larger than the first angle, and extending the first and second side surfaces A workpiece having a second outer peripheral surface connecting ends, a third outer peripheral surface forming the bottom of the V-groove, and a fourth outer peripheral surface connecting to the extending end of the third outer surface is supported around the workpiece axis. And rotationally drive the firstas well asThird sideFirst and third grinding surfaces dressed in a dimension corresponding to the second grinding surface, and a second grinding side surface dressed by an axial feed grinding allowance more than the dimension corresponding to the second side surface;Corresponding to each of the first to fourth outer peripheral surfacesDoThe grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed is relatively moved to the forward end position with a movement angle larger than the second angle and smaller than the first angle with respect to the workpiece. The one side surface, the third side surface, and the first to fourth outer peripheral surfaces are ground to a predetermined dimension by the first grinding side surface, the third grinding side surface, and the first to fourth grinding outer peripheral surfaces, and the second side surface is For a given dimensionSaidGrinding is performed by the second grinding side face while leaving only the axial feed grinding allowance, and the workpiece and the grinding wheel are relatively fed and moved in the axial direction in a state where the grinding wheel is located at the forward end position. The second side surface is ground by the second grinding side surface by the axial feed grinding allowance.
[0006]
A structural feature of the invention according to claim 3 is the composite grinding method according to claim 2, wherein the grinding wheel is moved relative to the workpiece at the moving angle, and the first peripheral grinding is performed. The grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that the outer diameter of the first outer peripheral surface ground by the surface has reached a predetermined dimension.
[0007]
  A structural feature of the invention according to claim 4 is the composite grinding method according to any one of claims 1 to 3, wherein the first to third dress side surfaces corresponding to the first to third side surfaces of the workpiece. The dresser formed with a support is rotated around an axis parallel to the workpiece axis, and the grinding wheel is moved relative to the dresser in a direction perpendicular to the axis to the dress advance end position. Then, the first grinding side surface and the third grinding side surface of the grinding wheel are dressed to a predetermined size by the first dress side surface and the third dress side surface, and the second grinding side surface is dressed by the second dress side surface. The dresser and the grinding wheel are moved relative to each other in the axial direction in a state where the grinding wheel is located at the dress advance end position, and the second grinding side surface is moved forward by the second dress side surface. The axial direction FeedMore grinding costIs to dress.
[0008]
  The structural feature of the invention according to claim 5 is that it has a first side surface that forms a first angle with respect to the axis, a second side surface that forms a second angle smaller than the first angle, and is larger than the first angle. A workpiece support device for rotating and driving a workpiece in which a V-groove formed by a third side surface forming a third angle is formed at a predetermined distance in the axial direction from the first side surface around the workpiece axis. And the firstas well asCorresponds to the third aspectFirst and third grinding surfaces dressed in dimensions, and second grinding side surfaces dressed more by an axial feed grinding allowance than the dimensions corresponding to the second side surfacesAnd a first wheel for moving the wheel head relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle. The moving means, the second moving means for relatively moving the workpiece support device and the grindstone table in the axial direction, and the movement of the grindstone table with respect to the workpiece support device by the first moving means. The first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface, and the second side surface is predetermined dimension. AgainstSaidA first feed control means for grinding by the second grinding side face while leaving only an axial feed grinding allowance; and the workpiece support device is moved by the second moving means in the state where the grinding wheel base is located at the forward end position. Second feed control means for feeding and moving the second side surface with respect to the table in the axial direction by the second grinding side surface by the axial feed grinding amount.
[0009]
  A structural feature of the invention according to claim 6 is that a first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, A V-groove formed by a second side surface extending at a second angle smaller than the first angle and a third side surface extending at a third angle larger than the first angle, and extending the first and second side surfaces A workpiece having a second outer peripheral surface connecting ends, a third outer peripheral surface forming the bottom of the V-groove, and a fourth outer peripheral surface connecting to the extending end of the third outer surface is supported around the workpiece axis. A workpiece support device that is rotationally driven, and the firstas well asThird sideFirst and third grinding surfaces dressed in a dimension corresponding to the second grinding surface, and a second grinding side surface dressed by an axial feed grinding allowance more than the dimension corresponding to the second side surface;Corresponding to each of the first to fourth outer peripheral surfacesDoA grinding wheel base that supports and rotates the grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed, and the grinding wheel base with respect to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle. First moving means for relatively moving, second moving means for relatively moving the workpiece support device and the grindstone table in the axial direction, and the grindstone table with respect to the workpiece support device. The first moving means is relatively moved to the forward end position at the moving angle, and the first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first ground side surface and third ground surface. The side surface and the first to fourth grinding outer peripheral surfaces are ground to a predetermined dimension, and the second side surface is ground with respect to the predetermined dimension.SaidFirst feed control means for grinding by the second grinding side face while leaving only an axial feed grinding allowance, and the workpiece support device and the grinding wheel base in the state where the grinding wheel base is positioned at the forward end position. And a second feed control means for moving the second side surface relative to the axial direction by the moving means and grinding the second side surface by the second grinding side surface by the axial feed grinding allowance.
[0010]
A structural feature of the invention according to claim 7 is the composite grinding apparatus according to claim 6, wherein the first moving means is an outer diameter of the first outer peripheral surface ground by the first outer peripheral ground surface. Is that the grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that a predetermined dimension has been reached.
[0011]
[Operation and effect of the invention]
  In the invention according to claim 1 configured as described above, a workpiece having a first side surface and having a V groove formed by the second side surface and the third side surface is driven to rotate around the workpiece axis, The grinding wheel having the first to third grinding side faces is moved relative to the workpiece to the forward end position at a movement angle larger than the second angle formed by the second side face and smaller than the first angle formed by the first side face. The first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface, and the second side surface is ground by the second grinding side surface while leaving only the axial feed grinding allowance, With the grinding wheel positioned at the forward end position, the workpiece and the grinding wheel are moved relative to each other in the axial direction, and the second side is ground by the second grinding side for the axial feed grinding allowance. Forming a first side surface and a V-groove with 3 side can be suppressed low capital expenditure can be ground and dimensional variation occurring between the grinding process because the grinding process is not divided into two grindersCan be eliminated.
[0012]
In the invention according to claim 2 configured as described above, the first through the first side surfaces have the first side surface, the V side groove is formed by the second side surface and the third side surface, and are connected to the first through third side surfaces. A workpiece having four outer peripheral surfaces is rotationally driven around the workpiece axis, and the grinding wheel on which the first to third grinding side surfaces and the first to fourth grinding outer peripheral surfaces are formed has an axis line with respect to the workpiece. The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to a forward end position relatively at a moving angle larger than the second angle and smaller than the first angle formed with the first side surface. Grinding to a predetermined dimension by the grinding side face, the third grinding side face and the first to fourth grinding outer peripheral faces, and grinding the second side face by the second grinding side face while leaving only the axial feed grinding allowance with respect to the predetermined dimension, With the grinding wheel in the forward end position, the workpiece and the grinding wheel are relative to each other in the axial direction. Since the second side surface is ground by an axial feed grinding allowance by the second grinding side surface, it is possible to grind the composite surface with a single grinding device, and the equipment investment cost can be kept low. . In addition, the first to third side surfaces and the first to fourth outer peripheral surfaces can be ground with high accuracy in a short time by one grinder.
[0013]
In the invention according to claim 3 configured as described above, the outer diameter of the first outer peripheral surface becomes a predetermined dimension by moving the grinding wheel relative to the workpiece at a predetermined movement angle. Since it is detected by the measuring device and the grinding wheel is accurately stopped at the forward end position, it is possible to ensure high dimensional accuracy of the first outer peripheral surface and also ensure high dimensional accuracy of other parts by composite grinding. Can do.
[0014]
In the invention according to claim 4 configured as described above, the first to third dress side surfaces of the dresser are rotationally driven around an axis parallel to the workpiece axis, and the grinding wheel is perpendicular to the axis with respect to the dresser. The dressing is moved relative to the dress advance end position in the direction, and the first grinding side surface and the third grinding side surface of the grinding wheel are dressed to a predetermined dimension by the first dress side surface and the third dress side surface, and the second grinding is performed. Dress the side with the second dress side and move the dresser and grinding wheel relative to each other in the axial direction with the grinding wheel positioned at the dress forward end position, and move in the axial relative direction at the forward end position of the grinding wheel. The second grinding surface dresses the second grinding side with the second dressing side by an amount corresponding to the axial feed grinding allowance for grinding the second side of the workpiece. It can be efficiently dress.
[0015]
In the invention according to claim 5 configured as described above, a workpiece having a first side surface and having a V-groove formed by the second side surface and the third side surface is moved around the workpiece axis by the workpiece support device. The grindstone wheel having the first to third grinding side surfaces is rotationally driven and is rotationally driven by being supported on the grindstone table, and the first moving means makes the first side surface larger than the second angle formed by the second side surface. The wheel head is moved relative to the workpiece support device at a movement angle smaller than the first angle, and the first side surface and the third side surface are ground to a predetermined dimension by the first grinding side surface and the third grinding side surface. At the same time, the second side surface is ground by the second grinding side surface while leaving only an allowance for feed grinding in the axial direction with respect to a predetermined dimension, and the workpiece support device is axially aligned with respect to the wheel base with the wheel head positioned at the forward end position. Move the second side relative to the direction Since the grinding is carried out by the axial feed grinding allowance on the cut side, it is possible to grind the first side and the second and third sides forming the V-groove with a single grinding machine, thereby reducing the capital investment cost. And because the grinding process is not divided into two grinding machines, the dimensional variation that occurs during the grinding processCan be eliminated.
[0016]
  In the invention which concerns on Claim 6 comprised as mentioned above, it has a 1st side surface and is divided into a 2nd side surface and a 3rd side surface.ThanA workpiece having V-grooves and having first to fourth outer peripheral surfaces connected to the first to third side surfaces is rotationally driven around the workpiece axis by the workpiece support device, and the first to third grinding side surfaces and the The grinding wheel on which the first to fourth grinding outer peripheral surfaces are formed is supported on a grinding wheel base and driven to rotate, and the first moving means makes the axis larger than the second angle formed by the second side surface and by the first angle formed by the first side surface. The grindstone is moved relative to the workpiece support device at a small movement angle, and the first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first grinding side surface, the third grinding side surface, and the first to first side surfaces. The grinding wheel is ground to the predetermined dimension by the fourth grinding outer peripheral surface, and the grinding wheel base is positioned at the forward end position by grinding the second side surface while leaving the second side surface by an axial feed grinding allowance with respect to the predetermined dimension. With the workpiece support device relative to the grinding wheel base in the axial direction Since the second side surface is ground by an axial feed grinding allowance by the second grinding side surface, it is possible to grind the composite surface with a single grinding device and keep the capital investment cost low, The first to third side surfaces and the first to fourth outer peripheral surfaces can be ground with high accuracy in a short time by one grinder.
[0017]
In the invention according to claim 7 configured as described above, the first moving means detects that the outer diameter of the first outer peripheral surface has become a predetermined dimension, and the grinding wheel is moved forward by the signal. Since it is stopped at the position, high dimensional accuracy of the first outer peripheral surface can be secured, and high dimensional accuracy of other parts by composite grinding can be secured.
[0018]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 10 denotes a composite grinding apparatus capable of simultaneously grinding a side surface and an outer peripheral surface of a tool holder, which is a workpiece W, such as a V-groove and a tapered portion, and the X-axis direction on the T-shaped bed 15 ( The workpiece support device 16 is slidably mounted in the left-right direction) and the grindstone base 17 is slidable in the Z-axis direction (front-back direction).
[0019]
The workpiece support device 16 has a table 26 slidably mounted on X-axis guide rails 24, 25 extending in the X-axis direction on a T-shaped bed 15, and a headstock on the table 26. 35 and a tailstock 36 are mounted. A carbide center 37 is attached to the tip of the center shaft of the spindle stock 35 and supports the workpiece W with the carbide center 38 attached to the tailstock 36. A rotating face plate 40 is rotatably supported on the center shaft, and the rotating face plate 40 is rotationally driven by a main shaft motor 34 to rotate the workpiece W around the X-axis line through a rotating metal.
[0020]
As shown in FIG. 3, the workpiece W has a tapered first outer peripheral surface 11 extending in the axial direction, and a radial direction at a first angle α which is 90 degrees from the first outer peripheral surface 11 to the axis. The first side surface 21 that extends, the second side surface 22 that extends at a second angle β that is 60 degrees smaller than the first angle α (90 degrees), and 120 degrees that is larger than the first angle α (90 degrees). A V-groove formed by the third side surface 23 extending at the third angle γ, a second outer peripheral surface 12 connecting the extended ends of the first side surface 21 and the second side surface 22, and a third outer periphery forming the bottom of the V-groove. A fourth outer peripheral surface 14 connected to the extending ends of the surface 13 and the third side surface 23 is formed.
[0021]
On the grindstone base 41 that is inclined and fixed on the T-shaped bed 15, an angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees) is formed with respect to the X-axis direction. Z-axis guide rails 42 and 43 extending in the Z-axis direction are provided, and the grinding wheel platform 17 is slidably mounted on the Z-axis guide rails 42 and 43. A grinding wheel shaft 7 is rotatably supported on the grinding wheel base 17, and a grinding wheel G is mounted on the tip of the grinding wheel shaft 7. The grinding wheel shaft 7 is driven to rotate by a grinding wheel motor 6. On the outer peripheral surface of the grinding wheel G, the first to third grinding side surfaces 71 to 73 and the first to third side surfaces corresponding to the first to third side surfaces 21 to 23 and the first to fourth outer peripheral surfaces 11 to 14 of the workpiece W are provided. Fourth grinding outer peripheral surfaces 61 to 64 are formed.
[0022]
The grinding wheel platform 17 is moved relative to the workpiece support device 16 in the Z-axis direction on the Z-axis guide rails 42 and 43 via the ball screw mechanism 46 by the Z-axis servo motor 45. The grinding wheel platform 17 is supported by the Z-axis guide rails 42 and 43, the Z-axis servo motor 45, the ball screw mechanism 46, and the like at a movement angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees). First moving means 20 is configured to move relative to the device 16. The table 26 of the workpiece support device 16 is moved relative to the grindstone table 17 in the X-axis direction on the X-axis guide rails 24 and 25 via the ball screw mechanism 29 by the X-axis servomotor 28. The X-axis guide rails 24 and 25, the X-axis servo motor 28, and the ball screw mechanism 29 constitute second moving means 30 that relatively moves the workpiece support device 16 and the grindstone table 17 in the axial direction.
[0023]
On the T-shaped bed 15, a measuring device 18 is attached in the vicinity of the center of the front surface opposite to the grinding wheel platform 17 with the workpiece support device 16 interposed therebetween. The measuring device 18 is in contact with the first side surface 21 of the workpiece W to measure the position of the workpiece W in the X-axis direction and the outer diameter measurement of the outer diameter of the first outer peripheral surface 11 during grinding. The apparatus 9 is comprised. The end face measuring device 8 and the outer diameter measuring device 9 can be moved back and forth between a fixed position and a retracted position by an advancing / retreating device (not shown). In the end face measuring device 8 and the external shape measuring device 9, the measuring element contacts the outer diameter of the first side surface 21 and the first outer peripheral surface 11 of the workpiece W at the measuring position, and the built-in differential transformer is the displacement amount of the contacting element. Is detected, and the position of the first side surface 21 in the X-axis direction and the outer diameter of the first outer peripheral surface 11 are output as electric signals to a numerical controller 51 described later. The outer diameter measuring device 9 detects that the outer diameter of the first outer peripheral surface 11 of the workpiece W has been ground to a predetermined size by the first grinding outer peripheral surface 61 of the grinding wheel G, and sends a signal to the numerical control device 51 described later. Is fed back to stop the grinding wheel G at the forward end position 60.
[0024]
The numerical controller 51 is connected to an input device 50 for inputting control commands, machining conditions, and the like. The first and second feed control means 52 and 53 and the first and second dress feed control means 54 and 55 are connected to the numerical control device 51. I have. The feed control means 52 to 55 transmit drive signals from the X-axis and Z-axis drive circuits 57 and 58 to the X-axis and Z-axis servomotors 28 and 45 via the interface 56, and the X-axis and Z-axis servomotors. The X-axis and Z-axis direction positions of the workpiece support device 16 and the grindstone table 17 are detected by the X-axis and Z-axis encoders 27 and 44 from the rotations 28 and 45 and fed back to the numerical control device 51 via the interface 56. It has become. The first feed control means 52 feeds and moves the grindstone platform 17 relative to the workpiece support device 16 to the advance end position 60 at a movement angle larger than the second angle and smaller than the first angle by the first movement means 20. The first side surface 21, the third side surface 23, and the first to fourth outer peripheral surfaces 11 to 14 of the workpiece W are used as the first grinding side surface 71, the third grinding side surface 73, and the first to fourth outer peripheral surfaces of the grinding wheel G. While grinding to a predetermined dimension by the side surfaces 61 to 64, as shown in FIG._{twenty two}) Leave (d_{twenty one}) Grind only.
[0025]
The second feed control means 53 moves the workpiece support device 16 and the grindstone table 17 relatively in the axial direction, that is, in the X-axis direction while the grindstone table 17 is positioned at the forward end position 60, thereby The second side surface 22 of the workpiece W is fed by the second grinding side surface 72 of the grinding wheel G to the remaining axial feed grinding amount (d_{twenty two}) Only to grind. The relative movement amount (L) in the X-axis direction between the grinding wheel platform 17 and the workpiece support device 16 at this time is L = d because the second angle is β degrees._{twenty two}/ Sinα.
[0026]
In the dresser device 19, a rotary shaft 33 is rotatably supported on a dresser base 31, and a diamond roll D is attached to the tip of the rotary shaft 33. The dresser table 31 is fixed to the spindle table 35 of the workpiece support device 16, and the rotary shaft 33 is driven by a dresser drive motor 47, so that the diamond roll D is rotated around the X axis parallel to the workpiece axis. As shown in FIG. 5, the diamond roll D has first to third dress side surfaces 74 to 76 for dressing the first to third grinding side surfaces 71 to 73 of the grinding wheel G, and second to fourth grinding outer circumferences. Second to fourth dress outer peripheral surfaces 65 to 67 for dressing the surfaces 62 to 64 and a large-diameter tapered first dress outer peripheral surface 68 for dressing the first grinding outer peripheral surface 61 are formed. The cross-sectional position dimensions of the first to third dress side surfaces 74 to 76 and the second to fourth dress outer peripheral surfaces 65 to 67 are the first to third side surfaces 21 to 23 and the second to fourth outer peripheral surface 12 of the workpiece W. It is the same as the cross-sectional position dimension of -14. The first dress feeding means 54 feeds and moves the grinding wheel base 17 relative to the workpiece support device 16 by the first moving means 20 to move the first grinding side surface 71 and the third grinding side surface 73 of the grinding wheel G to the first. The first dress side surface 74 and the third dress side surface 76 are dressed to a predetermined size, and the second ground side surface 72 is dressed by the second dress side surface 75 by a predetermined amount. The second dress feed control means 55 moves the workpiece support device 16 and the grindstone table 17 by the second moving means 30 in the state where the grinding wheel G has reached the dress advance end position 69 by the first dress feed control means 54. The second grinding side surface 72 is moved in the axial direction by the dressing movement relative to the axial direction by the second dressing side surface 75 (d_{twenty two}) Dress as much as you need.
[0027]
The operation of the composite grinding apparatus configured as described above will be described together with the composite grinding method based on the flowchart of the operation of the composite grinding apparatus shown in FIG. First, an operator attaches the workpiece W between the carbide center 37 of the headstock 35 and the carbide center 38 of the tailstock 36 of the workpiece support device 16, and attaches the workpiece W to the rotating face plate 40 with a screwdriver. Next, by pressing a start button attached to the numerical control device 51, the grinding cycle of the workpiece W starts. In order to position the workpiece W in the X-axis direction, the end face measuring device 8 of the measuring device 18 is advanced to a fixed position, and the workpiece support device 16 is moved to the right by the X-axis servomotor 28. The first side surface 21 of the workpiece W comes into contact with the probe of the end surface measuring device 8 and the position of the first side surface 21 in the X-axis direction is detected and transmitted to the numerical control device 51 to be compared with the grinding position. When the first side face 21 moves to the grinding position and the detection signal from the end face measuring device 8 coincides with the grinding position, the numerical control device 51 stops the X-axis servo motor 28 to extend the workpiece support device 16 and the workpiece. W is positioned at the grinding position (step 77). When the positioning of the workpiece W in the X-axis direction is completed, the end face measuring device 8 is retracted to the retracted position, the spindle motor 34 is driven, and the workpiece W is rotated by the rotating face plate 40 via the rotating metal (step 78). .
[0028]
The Z-axis servo motor 45 is driven, and the grinding wheel base 17 is guided by the Z-axis guide rails 42 and 43 through the ball screw mechanism 46 and advances toward the workpiece W at a fast feed speed, a rough grinding feed speed, and a fine grinding feed speed. (Step 79), the first to third grinding side surfaces 71 to 73 and the first to fourth grinding outer peripheral surfaces 61 to 64 of the grinding wheel G being driven to rotate by the grinding wheel motor 6 are the first to fourth grinding surfaces of the workpiece W. The three side surfaces 21 to 23 and the first to fourth outer peripheral surfaces 11 to 14 are subjected to rough grinding and fine grinding (step 80). When the first grinding outer peripheral surface 61 slightly coarsely grinds the first outer peripheral surface 11 to remove the black skin, the outer diameter measuring device 9 is advanced to the measurement position, and the contactor contacts the first outer peripheral surface 11. The outer diameter is measured, and an electrical signal corresponding to the outer diameter of the first outer peripheral surface 11 is transmitted to the numerical controller 51. The numerical controller 51 changes the feed rate of the grindstone table 17 from the coarse grinding feed rate to the fine grinding feed rate in accordance with the outer diameter of the first outer circumferential surface 11 input from the outer diameter measuring device 9. When the outer diameter reaches a predetermined dimension, the Z-axis servo motor 45 is stopped, the grinding wheel base 17 is extended, and the grinding wheel G is stopped at the forward end position 60 (step 81). At this time, the second grinding side surface 72 has an axial feed grinding allowance (d_{twenty two}) Is dressed by an amount corresponding to a predetermined amount, so that the second side surface 22 has an axial feed grinding allowance (d_{twenty two}And the second grinding side surface 72 is ground. Subsequently, after the outer diameter measuring device 9 is retracted to the retracted position, the workpiece support device 17 is moved in the X-axis direction with respect to the grindstone table 16 by an amount L = d._{twenty two}/ Sin α is ground and fed, and the second side surface is finished to a predetermined dimension by the second grinding side surface 72 (step 82). Thereafter, the grinding wheel base 17 is moved back to the original position, the workpiece support device 16 is moved to the original position, the rotation of the workpiece W is stopped (step 83), and a series of complex grinding of the workpiece W is completed. .
[0029]
Next, a dressing method and apparatus for the grinding wheel G will be described based on the flowchart of FIG. When the numerical controller 51 is instructed to start dressing, the dressing cycle of the grinding wheel G starts. The workpiece support device 16 and the grindstone platform 17 are positioned at the dress start position, the dress motor 47 is driven, and the diamond roll D is rotated (step 85).
[0030]
The X-axis and Z-axis servomotors 28 and 45 are driven by two-axis control at the same time, and the workpiece support device 16 and the grindstone table 17 are moved via the ball screw mechanisms 29 and 46 to the X-axis and Z-axis guide rails 24, 25 and 42. , 43 and moved in relation to each other, and the first grinding outer peripheral surface 61 of the grinding wheel G rotated by the grinding wheel motor 6 is dressed in a taper shape by the first dress outer peripheral surface 68 of the diamond roll D (step) 86). After dressing the first grinding outer peripheral surface 61, the first to third grinding side surfaces 71 to 73 and the first to third dress side surfaces 74 to 76 are driven in the X-axis direction by driving the X-axis and Z-axis servomotors 28 and 45. The workpiece support device 16 and the grindstone platform 17 are positioned at the positions shown in FIG. Next, the X-axis and Z-axis servomotors 28 and 45 are simultaneously controlled in two axes to move the grinding wheel G forward relative to the diamond roll D in a direction perpendicular to the Z-axis, and the first grinding side surface 71 is moved. End dressing is performed by the first dress side surface 74 (step 87), and the second and third grinding side surfaces 72 and 73 and the second to fourth grinding outer peripheral surfaces 62 to 64 are connected to the second and third dress side surfaces 75 and 75 in the vicinity of the forward end. 76 and the second to fourth dress outer peripheral surfaces 65 to 67 are dressed to a predetermined size (step 88). At the forward end position 69, the Z-axis servo motor 45 and the grinding wheel base 17 are stopped (step 89), and the workpiece support device 16 is moved to the left by the X-axis servo motor 28 in the X-axis direction movement amount L = d._{twenty two}/ Sin α and the second grinding side surface 72 is moved in the axial direction by the second dress side surface._{twenty two}) And finish to a predetermined size (step 90). Finally, the end face 70 and the first dress side face 74 are aligned in the X-axis direction, the grinding wheel G is advanced in the direction perpendicular to the diamond roll D, and the end face 70 is end face dressed by the first dress side face 74 and the grindstone. The dress of the car G is finished (step 91). The grinding wheel base 17 and the workpiece support device 16 are moved to the original positions, and the rotation of the diamond roll D is stopped (step 92).
[0031]
In the above embodiment, the grindstone table 17 is moved at a movement angle larger than the second angle β (60 degrees) and smaller than the first angle α (90 degrees) with respect to the X axis that is the axis of the workpiece support device 16. The Z-axis guide rails 42 and 43 are arranged so as to move in the axial direction. However, the Z-axis guide rail is arranged at a right angle to the X axis, and the grinding wheel base 17 is perpendicular to the X axis. The movement of the workpiece support device 16 and the grindstone table 17 is simultaneously controlled by two axes by numerical control, and the grindstone table 17 is moved relative to the workpiece support device 16 at the aforementioned movement angle. You may do it.
[Brief description of the drawings]
FIG. 1 is a diagram showing a conventional divided grinding process.
FIG. 2 is a plan view of a composite grinding apparatus according to the present invention.
FIG. 3 is a diagram showing the relationship of grinding a workpiece with a grinding wheel.
FIG. 4 is a diagram showing a grinding allowance for a workpiece.
FIG. 5 is a diagram showing the relationship between a grinding wheel and a diamond roll.
FIG. 6 is a diagram showing a grinding process of a workpiece.
FIG. 7 is a diagram showing a dressing process of a grinding wheel.
[Explanation of symbols]
8 ... End face measuring device, 9 ... Outer diameter measuring device, 10 ... Composite grinding device, 11-14 ... First to fourth outer peripheral surfaces, 15 ... T-shaped bed, 16. ..Workpiece support device, 17 ... Wheel head, 18 ... Measurement device, 19 ... Dresser device, 20 ... First moving means, 21-23 ... First to third side surfaces, 26 ... Table, 30 ... Second moving means, 31 ... Dresser base, 35 ... Spindle base, 36 ... Tailstock, 41 ... Grinding wheel base, 51 ... Numerical value Control device, 52, 53 ... first and second feed control means, 54, 55 ... first and second dress feed control means, 60 ... forward end position, 61 to 64 ... first -4th grinding outer peripheral surface, 65-68 ... 1st-4th dress outer peripheral side surface, 69 ... Dress advance end position, 70 ... End surface, 71-73 ... 1st-3rd grinding side surface, 74-76 ... 1st-3rd dress side surface, (alpha) ... 1st angle, (beta) ... 2nd angle, (gamma) ... 3rd angle, D ... Diamond roll, G ... grinding wheel, d_{twenty two}... Axial feed grinding allowance, L ... Axis movement, W ... Workpiece.

Claims

A first side surface having a first angle with respect to the axis and having a second side surface having a second angle smaller than the first angle and a third side surface having a third angle larger than the first angle are formed. A V-shaped groove formed at a predetermined distance in the axial direction from the first side surface is driven to rotate around the workpiece axis, and is dressed in dimensions corresponding to the first and third side surfaces . A grinding wheel having a first grinding surface and a third grinding side surface, and a second grinding side surface that is dressed more than the dimension corresponding to the second side surface by an axial feed grinding allowance, and the second angle with respect to the workpiece. The first side surface and the third side surface are ground to a predetermined size by the first grinding side surface and the third grinding side surface by relatively feeding and moving to a forward end position at a movement angle larger and smaller than the first angle. And the second side surface with respect to a predetermined dimension. Leaving only the axial feed grinding allowance is grinding by the second grinding side causes the grinding wheel relative feed movement of said workpiece in a state of being positioned in the forward end position and the grinding wheel in the axial direction Then, the second side surface is ground by the second grinding side surface by the axial feed grinding amount.

A first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, and a second angle extending at a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface extending at a third angle greater than the first angle, a second outer peripheral surface connecting the extending ends of the first and second side surfaces, and the V-groove bottom portion A workpiece formed with a fourth outer peripheral surface connected to an extended end of the third outer peripheral surface and the third outer surface is supported around the workpiece axis, and is driven to rotate. The first and third side surfaces The first and third grinding surfaces dressed to the dimensions corresponding to the second side surface, the second grinding side surfaces dressed more than the dimension corresponding to the second side surface by the axial feed grinding allowance, and the first to fourth the first to grinding wheel fourth grinding the outer peripheral surface is formed respectively corresponding to the outer peripheral surface with respect to the workpiece second The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to the first grinding side surface, the first outer surface by relatively moving to the forward end position at a movement angle larger than the angle and smaller than the first angle. with grinding to a predetermined size by 3 grinding the side surface and the first to fourth grinding the outer peripheral surface, wherein all but said axial feed grinding allowance of the second side surface to a predetermined size by grinding by the second grinding side face, With the grinding wheel positioned at the forward end position, the workpiece and the grinding wheel are relatively fed and moved in the axial direction so that the second side surface is fed by the second grinding side surface by the axial feed grinding allowance. A composite grinding method characterized by grinding.

3. The composite grinding method according to claim 2, wherein the grinding wheel is moved relative to the workpiece at the moving angle and is ground by the first outer peripheral grinding surface. A composite grinding method, wherein the grinding wheel is stopped at the forward end position by a signal from a measuring device that detects that the diameter has reached a predetermined dimension.

4. The composite grinding method according to claim 1, wherein a dresser formed with first to third dress side surfaces corresponding to the first to third side surfaces of the workpiece is parallel to the workpiece axis. The first grinding side surface of the grinding wheel is supported by rotating around the axis, the dressing wheel is moved relative to the dresser in a direction perpendicular to the axis to the dress advance end position, and the grinding wheel is moved. And the third grinding side is dressed to a predetermined size by the first dress side and the third dress side, the second grinding side is dressed by the second dress side, and the grinding wheel is positioned at the dress forward end position. to many the dresser and in the state with the grinding wheel by said axial feed grinding allowance of the second grinding sides by relatively dress feed movement by said second address side in the axial direction dress The grinding wherein the.

A first side surface having a first angle with respect to the axis and having a second side surface having a second angle smaller than the first angle and a third side surface having a third angle larger than the first angle are formed. A workpiece support device that supports and rotates a workpiece having a V-groove formed at a predetermined distance in the axial direction from the first side surface, and dimensions corresponding to the first and third side surfaces. Rotating and driving a grinding wheel having a first grinding surface and a third grinding surface, and a second grinding side surface which is dressed more than the dimension corresponding to the second side surface by an axial feed grinding allowance. A grinding wheel base, first moving means for moving the grinding wheel base relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle, the workpiece support device and the grinding wheel Second moving the table relative to the axial direction Moving the wheel head and the grindstone table relative to the workpiece support device by the first moving means at the moving angle to the forward end position, and moving the first side surface and the third side surface to the first side. with grinding to size by 1 grinding the side surface and the third ground side, a first feed control means for grinding by the second grinding side face leaving only the axial feed grinding allowance of the second side surface relative to a predetermined dimension The workpiece support device is moved in the axial direction with respect to the grinding wheel table by the second moving means in a state where the grinding wheel table is positioned at the forward end position, and the second side surface is moved to the second grinding side surface. And a second feed control means for grinding only the axial feed grinding allowance.

A first outer peripheral surface extending in the axial direction, a first side surface extending radially from the first outer peripheral surface at a first angle with respect to the axis, and a second angle extending at a second angle smaller than the first angle. A V-groove formed by two side surfaces and a third side surface extending at a third angle greater than the first angle, a second outer peripheral surface connecting the extending ends of the first and second side surfaces, and the V-groove bottom portion A workpiece support device configured to support and rotate the workpiece having a third outer circumferential surface and a fourth outer circumferential surface connected to the extending end of the third outer surface around the workpiece axis, The first and third grinding surfaces dressed in dimensions corresponding to the first and third side surfaces; the second grinding side surface dressed more than the dimension corresponding to the second side surfaces by an axial feed grinding allowance; and first through by supporting the first through grinding wheel fourth grinding the outer peripheral surface is formed respectively corresponding to the fourth outer peripheral face A grindstone table that is driven to roll, a first moving means that moves the grindstone table relative to the workpiece support device at a movement angle larger than the second angle and smaller than the first angle, and the workpiece support device. A second moving means for relatively moving the grindstone table in the axial direction; and the grindstone table is relatively moved to the forward end position at the moving angle by the first moving means with respect to the workpiece support device. The first side surface, the third side surface, and the first to fourth outer peripheral surfaces are moved to a predetermined size by the first grinding side surface, the third grinding side surface, and the first to fourth grinding outer peripheral surfaces. the machine tool and the first feed control means for grinding by the second grinding side face leaving only the axial feed grinding allowance for a given size of the second aspect, in a state where the wheel head is positioned at the forward end position Object support device and said abrasive And a second feed control means for grinding the second side surface by the second grinding side surface by the axial feed grinding amount by moving the base relative to the axial direction by the second movement means. A composite grinding apparatus characterized by that.

The composite grinding apparatus according to claim 6, wherein the first moving unit is configured to detect that an outer diameter of the first outer peripheral surface ground by the first outer peripheral ground surface has become a predetermined dimension. The grinding wheel is stopped at the forward end position by a signal of