JP3559866B2

JP3559866B2 - Method and apparatus for processing curved surface member

Info

Publication number: JP3559866B2
Application number: JP01399494A
Authority: JP
Inventors: 澄広上田; 貞夫久保; 充一平塚; 壮行武富; 優伊藤; 俊郎山崎; 博芳中谷; 英樹関尾
Original assignee: Kawasaki Jukogyo KK
Current assignee: Kawasaki Motors Ltd
Priority date: 1994-01-11
Filing date: 1994-01-11
Publication date: 2004-09-02
Anticipated expiration: 2019-09-02
Also published as: JPH07204988A

Description

【０００１】
【産業上の利用分野】
本発明は曲面部材の加工方法および装置に関する。さらに詳しくは、大面積を有する曲面部材の加工方法および装置に関する。
【０００２】
【従来の技術】
大型船舶の推進に用いられているプロペラは、推進効率の向上を図るために大型化されるとともに特殊な曲面形状に加工されている。かかる大型のプロペラ加工において、いきなり仕上げ寸法まで切削等の加工を行うと、切削ミスが生じた場合には、素材が大きいことおよび特殊な形状を有している関係上、代替素材の入手が難しく納期確保が不可能となる恐れがある。そのため、数ミリ程度切削等を行い、しかるのち寸法計測して所要寸法からのずれを算出して、そのずれに応じて素材の位置および／または姿勢の調整がなされ、ついで、再び切削等の加工がなされる。そして、この一連の作業が繰り返されて仕上げ寸法まで加工され、所望形状のプロペラが得られる。なお、このプロペラ（被加工部材）の加工に適した位置からのずれを求め、プロペラの位置・姿勢を調整する作業をベストフィットという。
【０００３】
しかるに、現状では、この一連の作業が手作業によりなされているので、生産性が悪く製作工程が長期化するという問題がある。また、手作業によりなされてるいので、人為的なミスにより誤作が生じる可能性がないわけでもない。
【０００４】
かかる従来技術の問題に対処すべく、例えば精密工学会誌５５／１２／１９８９（１０３〜１０８頁）には、コンピュータにより形状データから法線最小二乗平面および中心を求め、そして求められた中心を一致させた状態で法線最小二乗平面を最小二乗法により一致させる方法が提案されている（図９（ｂ）参照）。なるほど、かかる方法によれば、素材が均一に切削等の加工がなされている場合には所望形状に仕上げられる。しかしながら、図９（ｃ）に示すように、局部的に削り過ぎの箇所が存在する場合には、前記加工方法ではその箇所の削り過ぎが回復されず、その結果、所望形状のものが得られないという問題が生ずる。
【０００５】
【発明が解決しようとする課題】
本発明はかかる従来技術の問題点に鑑みなされたものであって、製作途中において局部的に削り過ぎ等の箇所が生じても所望形状に仕上げることができる曲面部材の加工方法および装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明の曲面部材の加工方法の第１態様の第１形態は、演算処理手段を用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、同演算処理手段により前記データから所望形状の主成分および中心を算出する手順と、前記被加工部材の寸法を計測して前記演算処理手段に入力する手順と、同演算処理手段により前記計測結果から算出された被加工部材の形状の主成分および中心を算出する手順と、同演算処理手段により前記算出された被加工部材の形状の主成分を前記所望形状の主成分と一致させる手順と、同演算処理手段により前記両者の主成分を一致させた状態で、所望形状が確保できない箇所があるか否か判定する手順と、前記判定において所望形状が確保できない箇所があると判定されると、同演算処理手段により所望形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。本発明の曲面部材の加工方法の第１態様の第２形態は、演算処理手段を用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、同演算処理手段により前記データから所望形状の主成分および中心を算出する手順と、前記被加工部材の寸法を計測して前記演算処理手段に入力する手順と、同演算処理手段により前記計測結果から算出された被加工部材の形状の主成分および中心を算出する手順と、同演算処理手段により前記算出された被加工部材の形状の主成分を前記所望形状の主成分と一致させる手順と、同演算処理手段により前記両者の主成分を一致させた状態で、所望形状が確保できない箇所があるか否か判定する手順と、前記判定において所望形状が確保できない箇所があると判定されると、同演算処理手段により算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。本発明の曲面部材の加工方法の第１態様の第３形態は、演算処理手段を用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、同演算処理手段により前記データから所望形状の主成分および中心を算出する手順と、前記被加工部材の寸法を計測して前記演算処理手段に入力する手順と、同演算処理手段により前記計測結果から算出された被加工部材の形状の主成分および中心を算出する手順と、同演算処理手段により被加工部材の主成分を前記所望形状の主成分と一致させる手順と、同演算処理手段により前記両者の主成分を一致させた状態で、所望形状が確保できない箇所があるか否か判定する手順と、前記判定において所望形状が確保できない箇所があると判定されると、同演算処理手段により所望形状および算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。
【０００７】
また、本発明の曲面部材の加工方法の第２態様の第１形態は、演算処理手段と画像表示手段とを用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、前記被加工部材の寸法を計測する手順と、前記演算処理手段により前記計測結果から被加工部材の形状を算出する手順と、同演算処理手段により所望形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、算出された位置関係にある両者を画像表示手段に表示する手順と、前記表示された両者の位置関係が妥当であるか否か判定する手順と、前記判定において両者の位置関係が妥当と判定されると、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。本発明の曲面部材の加工方法の第２態様の第２形態は、演算処理手段と画像表示手段とを用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、前記被加工部材の寸法を計測する手順と、前記演算処理手段により前記計測結果から被加工部材の形状を算出する手順と、同演算処理手段により算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、算出された位置関係にある両者を画像表示手段に表示する手順と、前記表示された両者の位置関係が妥当であるか否か判定する手順と、前記判定において両者の位置関係が妥当と判定されると、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。本発明の曲面部材の加工方法の第２態様の第３形態は、演算処理手段と画像表示手段とを用いた曲面部材の加工方法であって、被加工部材を所定位置にセットする手順と、前記演算処理手段に曲面部材の所望形状についてのデータを入力する手順と、前記被加工部材の寸法を計測する手順と、前記演算処理手段により前記計測結果から被加工部材の形状を算出する手順と、同演算処理手段により所望形状および算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係を算出する手順と、算出された位置関係にある両者を画像表示手段に表示する手順と、前記表示された両者の位置関係が妥当であるか否か判定する手順と、前記判定において両者の位置関係が妥当と判定されると、同演算処理手段により前記位置関係における被加工部材の減肉量を算出する手順とを含んでいることを特徴とする。
【０００８】
本発明の曲面部材の加工方法の第１態様においては、算出された位置関係にある両者を画像表示する手順が付加されているのが好ましい。
【０００９】
一方、本発明の曲面部材の加工装置の第１態様の第１形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記データから所望形状の主成分および中心が算出され、前記計測結果から算出された被加工部材の形状の主成分および中心が算出され、前記両者の主成分が一致させられ、前記主成分が一致させられた状態で、所望形状が確保できない箇所があるか否が判定され、前記判定において所望形状が確保できない箇所があると判定されると、所望形状が移動されて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されることを特徴とする。本発明の曲面部材の加工装置の第１態様の第２形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記データから所望形状の主成分および中心が算出され、前記計測結果から算出された被加工部材の形状の主成分および中心が算出され、前記両者の主成分が一致させられ、前記主成分が一致させられた状態で、所望形状が確保できない箇所があるか否が判定され、前記判定において所望形状が確保できない箇所があると判定されると、算出された被加工部材の形状が移動されて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されることを特徴とする。本発明の曲面部材の加工装置の第１態様の第３形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記データから所望形状の主成分および中心が算出され、前記計測結果から算出された被加工部材の形状の主成分および中心が算出され、前記両者の主成分が一致させられ、前記主成分が一致させられた状態で、所望形状が確保できない箇所があるか否が判定され、前記判定において所望形状が確保できない箇所があると判定されると、所望形状および算出された被加工部材の形状が移動されて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されることを特徴とする。
【００１０】
また、本発明の曲面部材の加工装置の第２態様の第１形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段と、画像表示手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記計測結果から被加工部材の形状が算出され、所望形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出されて前記画像表示手段に送出され、同画像表示手段により前記位置関係にある両者が画像表示され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されること特徴とする。本発明の曲面部材の加工装置の第２態様の第２形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段と、画像表示手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記計測結果から被加工部材の形状が算出され、算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出されて前記画像表示手段に送出され、同画像表示手段により前記位置関係にある両者が画像表示され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されることを特徴とする。本発明の曲面部材の加工装置の第２態様の第３形態は、入力手段と、被加工部材の減肉手段と、被加工部材の寸法計測手段と、演算処理手段と、画像表示手段とを備え、前記減肉手段が、被加工部材を減肉する減肉機構と、被加工部材の位置および姿勢を調整する保持機構と、入力された減肉量にしたがって前記減肉機構および保持機構への指令値を出力する制御部とを有し、前記入力手段から前記演算処理手段に、曲面部材の所望形状についてのデータが入力され、前記寸法計測手段から前記演算処理手段に、被加工部材の計測結果が入力され、前記演算処理手段により、前記計測結果から被加工部材の形状が算出され、所望形状および算出された被加工部材の形状を移動させて、一定の削り代を確保しながら所望形状を得ることができる両者の位置関係が算出されて前記画像表示手段に送出され、同画像表示手段により前記位置関係にある両者が画像表示され、前記位置関係における被加工部材の減肉量が算出され、前記減肉量が減肉手段に入力され、入力された減肉量にしたがって前記減肉手段により被加工部材が減肉されることを特徴とする。
【００１１】
本発明の曲面部材の加工装置の第１態様においては、画像表示手段が付加され、該画像表示手段により算出された両者の位置関係が表示されるのが好ましい。
【００１２】
【作用】
本発明の曲面部材の加工方法の第１態様においては、まず被加工部材が所定位置にセットされるとともに、曲面部材の所望形状についてのデータが入力され、このデータにより所望形状の主成分および中心が算出される。ついで被加工部材の寸法が、例えば座標検出器により計測される。この計測結果により被加工部材の主成分および中心が算出される。しかるのち、この主成分が前記所望形状の主成分と一致させられる。この状態で、所望形状が確保できない箇所があるか否か判定される。この判定において所望形状が確保できない箇所があると判定されると、所望形状および／または被加工部材が移動されて、減肉代を確保しながら所望形状を切り取ることができる両者の位置関係が算出される。ついで、この位置関係における被加工部材の減肉量が算出される。しかるのち、この減肉量は減肉手段に入力されて被加工部材の減肉がなされる。
【００１３】
以下、この寸法計測および減肉が所要回繰り返されて被加工部材が所望形状とされる。
【００１４】
また、本発明の曲面部材の加工方法の第２態様においては、まず被加工部材が所定位置にセットされるとともに、曲面部材の所望形状についてのデータが入力される。しかるのち、被加工部材の寸法が、例えば座標検出器により計測される。ついで、この計測結果により被加工部材の形状が算出される。しかるのち、所望形状および／または被加工部材が移動されて、減肉代を確保しながら所望形状を切り取ることができる両者の位置関係が算出される。ついで、この位置関係における被加工部材の減肉量が算出される。しかるのち、この減肉量は減肉手段に入力されて被加工部材の減肉がなされる。
【００１５】
以下、この寸法計測および減肉が所要回繰り返されて被加工部材が所望形状とされる。
【００１６】
一方、本発明の曲面部材の加工装置の第１態様においては、まず減肉手段の保持機構に被加工部材がセットされるとともに、入力手段から曲面部材の所望形状についてのデータが演算処理手段に入力される。演算処理手段は、このデータに基づいて所望形状の主成分および中心を求める。しかるのち、寸法計測手段は、被加工部材の寸法計測を行うとともにその結果を演算処理手段に入力する。演算処理手段は、入力された計測結果から被加工部材の主成分および中心を求め、その主成分を先に求めた所望形状の主成分に一致させる。ついで演算処理手段は、この状態で被加工部材に所望形状が確保できない箇所があるか否か判定する。演算処理手段は、この判定において所望形状が確保できない箇所があると判定すると、所望形状および／または被加工部材を移動させて、一定の減肉を確保しながら所望形状を切り取ることができる両者位置関係を求めるとともに、そのときの減肉量を求め、減肉手段にその減肉量を入力する。減肉手段は、入力された減肉量にしたがって制御部により所要操作量を求めて減肉機構および保持機構を動作させて被加工部材を所要量減肉する。
【００１７】
以下、この計測および減肉動作が繰り返されて被加工部材が所望形状に加工される。
【００１８】
一方、本発明の曲面部材の加工装置の第２態様においては、まず減肉手段の保持機構に被加工部材がセットされるとともに、入力手段から曲面部材の所望形状についてのデータが演算処理手段に入力される。しかるのち、寸法計測手段は、被加工部材の寸法計測を行うとともにその結果を演算処理手段に入力する。演算処理手段は、所望形状および／または被加工部材を移動させて、減肉代を確保しながら所望形状を切り取ることができる両者位置関係を求めるとともに、そのときの減肉量を求め、減肉手段にその減肉量を入力する。減肉手段は、入力された減肉量にしたがって制御部により所要操作量を求めて減肉機構および保持機構を動作させて被加工部材を所要量減肉する。
【００１９】
以下、この計測および減肉動作が繰り返されて被加工部材が所望形状に加工される。
【００２０】
【実施例】
以下、添付図面を参照しながら本発明を実施例に基づいて説明するが、本発明はかかる実施例のみに限定されるものではない。
【００２１】
図１は本発明の曲面部材の加工方法の説明図、図２は同加工方法に用いる加工装置の一実施例の概略図、図３は同加工装置のブロック図、図４乃至図６は同加工方法における加工手順の一実施例のフローチャート、図７および図８は同加工方法における加工手順の他の実施例のフローチャートである。図において、１は入力手段、２は画像表示手段、３は減肉手段、４は寸法計測手段、５は演算処理手段、１０はワークステーション、２０は切削装置、Ｗは被加工部材（プロペラ素材）を示す。
【００２２】
本発明の加工方法に用いられる加工装置は、図２および図３に示すように、演算処理手段５と、入力手段１と、画像表示手段２と、減肉手段３と、寸法計測手段４とを主要構成要素としている。具体的には、演算処理手段５、入力手段１および画像表示手段２は、例えばワークステーション１０により構成され、減肉手段３および寸法計測手段４は、例えば座標検出器２１と切削工具２２との切替えが可能とされている数値制御の切削装置２０により構成されている。この切削装置２０は、ベッド２３に載置されている被加工部材Ｗの位置および姿勢を制御できるように構成され、また切削工具２２は所望の切削量を確保できるよう位置および切り込み深さが調整できるよう構成されている。かかる機能は、例えば直交１軸と回転１軸とが可動なパレットを有し、本体は直交３軸と回転２軸が可動なＮＣ工作機械により達成される。
【００２３】
そして、このワークステーション１０と切削装置２０とは、例えば有線または無線の通信回線により接続されている。
【００２４】
次に、このように構成された本発明の一実施例の加工装置による曲面部材の加工方法の一実施例について、図１の説明図ならびに図４乃至図６に示すフローチャートを参照しながら説明する。
【００２５】
ステップ１：プロペラ素材Ｗが切削装置２０のベッド（保持機構）２３にセットされる。
【００２６】
ステップ２：ワークステーション１０のキーボード１１（入力手段１）から、曲面部材の所望形状Ｒに関するデータが入力される。
【００２７】
ステップ３：ワークステーション１０の演算処理部１２は、入力されたデータにより所望形状Ｒの主成分およびその中心を算出する。
【００２８】
ステップ４：切削装置２０に設けられている座標検出器２１により、プロペラ素材Ｗの寸法が計測され、その計測結果は通信回線を介してワークステーション１０の演算処理部１２に入力される。
【００２９】
ステップ５：演算処理部１２は入力された計測結果により、プロペラ素材Ａの主成分および中心を算出する。
【００３０】
ステップ６：演算処理部１２はプロペラ素材Ａの主成分を先に算出されている所望形状Ｒの主成分に一致させ、その状態を画像表示部１３に出力する。
【００３１】
ステップ７：演算処理部１２は、この状態でプロペラ素材Ａに所望形状Ｒを確保できない箇所があるか否か判定する。この判定は、例えばプロペラ素材Ａの外形線と所望形状Ｒの外形線との差を評価することによりなされる。
【００３２】
ステップ８：演算処理部１２は、前記判定においてプロペラ素材Ａに所望形状を確保できない箇所があると判定すると、所望形状Ｒを適当に移動させてその箇所においても一定の削り代を確保しながら所望形状Ｒが切り取れる両者Ａ，Ｒの位置関係を算出し、その状態を画像表示部１３に出力する。
【００３３】
ステップ９：オペレータによりその位置関係が妥当と判断されると、オペレータからの指示により演算処理部１２は演算処理を続行し、プロペラ素材Ａの削り代（減肉量）を算出するとともに、切削装置２０による切削量を算出する。
【００３４】
ステップ１０：演算処理部１２は、通信回線を介して前記切削量を切削装置２０に入力する。
【００３５】
ステップ１１：切削装置２０は前記切削量にしたがって、その制御部２４によりベッド２３の移動量（回転量）およびバイト（切削工具）２２の切り込み量等を算出する。
【００３６】
ステップ１２：切削装置２０の制御部２４は、前記移動（回転）量によりベッド２３を移動させるとともに、前記切り込み量でバイト２２に切り込みさせてプロペラ素材Ｗを所要量切削する。
【００３７】
以下、ステップ４〜ステップ１２が繰り返されて所望形状Ｒのプロペラが得られる。
【００３８】
なお、本実施例ではステップ８において所望形状Ｒを移動させたが、プロペラ素材Ａを移動させてもよく、あるいは両者Ａ，Ｒを適当に移動させてもよい。
【００３９】
次に本発明の曲面部材の加工方法の他の実施例について図７および図８に示すフローチャートを参照しながら説明する。
【００４０】
ステップ１：プロペラ素材Ｗが切削装置２０のベッド２３（保持機構）にセットされる。
【００４１】
ステップ２：ワークステーション１０のキーボード１１（入力手段１）から、曲面部材の所望形状Ｒに関するデータが入力される。
【００４２】
ステップ３：切削装置２０に設けられている座標検出器２１により、プロペラ素材Ｗの寸法が計測され、その計測結果は通信回線を介して演算処理部１２に入力される。
【００４３】
ステップ４：演算処理部１２は入力された計測結果により、プロペラ素材Ａの形状を算出する。
【００４４】
ステップ５：演算処理部１２は、所望形状Ｒを適当に移動させて一定の削り代を確保しながら所望形状Ｒを切り取ることができる両者Ａ，Ｒの位置関係を算出し、その状態を画像表示部１３に出力する。
【００４５】
ステップ６：オペレータによりその位置関係が妥当と判断されると、オペレータからの指示により演算処理部１２は演算処理を続行し、プロペラ素材Ａの削り代（減肉量）を算出するとともに、切削装置２０による切削量を算出する。
【００４６】
ステップ７：演算処理部１２は、通信回線を介して前記切削量を切削装置２０に入力する。
【００４７】
ステップ８：切削装置２０は前記切削量にしたがって、その制御部２４によりベッド２３の移動量（回転量）およびバイト（切削工具）２２の切り込み量等を算出する。
【００４８】
ステップ９：切削装置２０の制御部２４は、前記移動量によりベッド２３を移動（回転）させるとともに、前記切り込み量でバイト２２に切り込みさせてプロペラ素材Ｗを所要量切削する。
【００４９】
以下、ステップ３〜ステップ９が繰り返されて所望形状Ｒのプロペラが得られる。
【００５０】
なお、本実施例ではステップ５において所望形状Ｒを移動させたが、先の実施例と同様にプロペラ素材Ａを移動させてもよく、あるいは両者Ａ，Ｒを適当に移動させてもよい。
【００５１】
【発明の効果】
以上説明してきたように、本発明によれば、プロペラ等の３次元曲面を有する部材を全自動により加工することができるので、製作工程を著しく短縮することができる。また、製作途中でプロペラ素材に削り過ぎの箇所が生じても、次の加工工程において、その削り過ぎを解消するように、プロペラ素材の位置や姿勢が調整されるので、局部的に削り過ぎの箇所が製作途中に生じても、所定寸法および形状の完成品が得られるという優れた効果が奏される。そのため、局部的な削り過ぎによる納期遅延を回避できるという効果も得られる。また、全工程が自動化されているので、製品の品質も安定するという優れた効果も得られる。
【図面の簡単な説明】
【図１】本発明の曲面部材の加工方法の説明図である。
【図２】同加工方法に用いる加工装置の一実施例の概略図である。
【図３】同加工装置のブロック図である。
【図４】同加工方法における加工手順の一実施例のフローチャートの一部である。
【図５】同実施例フローチャートの一部である。
【図６】同実施例フローチャートの一部である。
【図７】同加工方法における加工手順の他の実施例のフローチャートの一部である。
【図８】同実施例のフローチャートの一部である。
【図９】従来の曲面部材の加工方法の説明図である。
【符号の説明】
１入力手段
２画像表示手段
３減肉手段
４寸法計測手段
５演算処理手段
１０ワークステーション
１１キーボード
１２演算処理部
１３画像表示部
２０切削装置
２１座標検出器
２２切削工具（バイト）
２３ベッド
２４制御部[0001]
[Industrial applications]
The present invention relates to a method and an apparatus for processing a curved member. More specifically, the present invention relates to a method and an apparatus for processing a curved member having a large area.
[0002]
[Prior art]
2. Description of the Related Art Propellers used for propulsion of large vessels are enlarged in size and processed into a special curved surface shape in order to improve propulsion efficiency. In such large propeller processing, when processing such as cutting to the finished dimensions suddenly, if a cutting error occurs, it is difficult to obtain a substitute material due to the large size and the special shape. There is a possibility that it is impossible to secure the delivery date. For this reason, cutting is performed for several millimeters, then the dimensions are measured to calculate the deviation from the required dimensions, and the position and / or orientation of the material is adjusted according to the deviation, and then processing such as cutting is performed again. Is made. Then, this series of operations is repeated and processed to the finished dimensions, and a propeller having a desired shape is obtained. In addition, the work of finding the deviation from the position suitable for processing the propeller (workpiece) and adjusting the position and orientation of the propeller is called best fit.
[0003]
However, at present, since this series of operations is performed manually, there is a problem that productivity is poor and the manufacturing process is lengthened. In addition, since the manual operation is performed, there is no possibility that an erroneous operation is caused by a human error.
[0004]
In order to cope with such a problem of the prior art, for example, Journal of Precision Engineering 55/12/1989 (pp. 103-108) describes that a normal least square plane and a center are obtained from shape data by a computer, and the obtained centers are matched. A method of matching the normal least-squares plane with the least-squares method in such a state has been proposed (see FIG. 9B). Indeed, according to such a method, when the material is uniformly processed by cutting or the like, the material is finished in a desired shape. However, as shown in FIG. 9 (c), when there is a locally overcut portion, the above method does not recover the overcut portion, and as a result, a desired shape is obtained. There is a problem that there is not.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the problems of the related art, and provides a method and an apparatus for processing a curved surface member capable of finishing a desired shape even when a location such as excessive shaving occurs locally during manufacturing. It is aimed at.
[0006]
[Means for Solving the Problems]
First aspect of the method for processing a curved member according to the present inventionFirst form ofIs a method of processing a curved surface member using an arithmetic processing means, wherein a step of setting a workpiece to a predetermined position, a step of inputting data on a desired shape of the curved surface member to the arithmetic processing means, A step of calculating a main component and a center of a desired shape from the data by the processing means; a step of measuring the dimensions of the workpiece to be input to the arithmetic processing means; and a step of calculating the dimensions from the measurement result by the arithmetic processing means.CalculatedWorkpieceShapeCalculating the principal components and the center ofCalculatedWorkpieceShapeA step of matching the main component of the desired shape with the main component of the desired shape, and a step of determining whether or not there is a portion where a desired shape cannot be secured in a state where the two main components are matched by the same arithmetic processing means; When it is determined in the determination that there is a portion where the desired shape cannot be secured, the same processing unit moves the desired shape and calculates a positional relationship between the two so that the desired shape can be obtained while securing a certain cutting allowance. It is characterized by including a procedure and a procedure of calculating the thickness reduction of the workpiece in the positional relationship by the arithmetic processing means.A second aspect of the first aspect of the method for processing a curved member according to the present invention is a method for processing a curved surface member using arithmetic processing means, wherein a step of setting a workpiece to a predetermined position, and A step of inputting data about a desired shape of the curved surface member, a step of calculating a main component and a center of the desired shape from the data by the arithmetic processing means, and a step of measuring the dimensions of the workpiece and measuring the dimensions of the workpiece. A step of inputting, a step of calculating a main component and a center of the shape of the workpiece calculated from the measurement result by the arithmetic processing means, and a step of calculating the main component of the shape of the workpiece calculated by the arithmetic processing means And a step of determining whether or not there is a portion where a desired shape cannot be secured in a state where the two main components are matched by the arithmetic processing means. If it is determined that there is a portion where the desired shape cannot be ensured, the shape of the workpiece calculated by the arithmetic processing means is moved to obtain a desired shape while securing a constant cutting allowance. And a step of calculating the thickness reduction of the workpiece in the positional relationship by the arithmetic processing means. A third mode of the first aspect of the method for processing a curved member of the present invention is a method for processing a curved member using arithmetic processing means. Thus, a procedure for setting a workpiece to a predetermined position, a procedure for inputting data on a desired shape of a curved surface member to the arithmetic processing means, and a procedure for calculating a main component and a center of a desired shape from the data by the arithmetic processing means. Calculating, measuring the dimensions of the workpiece, and inputting the dimensions to the arithmetic processing means, and calculating the main component and the center of the shape of the workpiece calculated from the measurement result by the arithmetic processing means A procedure in which the main component of the workpiece is matched with the main component of the desired shape by the arithmetic processing means; The procedure for determining whether or not there is a part, and if it is determined in the determination that there is a portion where the desired shape cannot be secured, Moving the shape to obtain a desired shape while securing a constant shaving allowance; calculating the positional relationship between the two, and calculating the thickness reduction of the workpiece in the positional relationship by the arithmetic processing means And a procedure.
[0007]
Further, a second aspect of the method for processing a curved member according to the present invention.First form ofIs the arithmetic processing meansAnd image display meansA method of processing a curved member using a method of setting a member to be processed at a predetermined position, a step of inputting data on a desired shape of the curved member to the arithmetic processing means, and a step of: Measuring, calculating the shape of the workpiece from the measurement result by the arithmetic processing means, and moving the desired shape by the arithmetic processing means to obtain a desired shape while securing a certain cutting allowance Calculating the positional relationship between the two,A step of displaying the calculated positional relationship on the image display means, a step of determining whether or not the displayed positional relationship is appropriate, and determining that the positional relationship between the two is appropriate. ThenCalculating the amount of wall thinning of the workpiece in the positional relationship by the arithmetic processing means.A second form of the second aspect of the method for processing a curved member of the present invention is a method for processing a curved member using an arithmetic processing means and an image display means, wherein a step of setting a member to be processed at a predetermined position, A step of inputting data about a desired shape of the curved member to the arithmetic processing unit, a step of measuring the dimension of the workpiece, and a procedure of calculating the shape of the workpiece from the measurement result by the arithmetic processing unit. Moving the shape of the workpiece to be processed calculated by the arithmetic processing means, and calculating a positional relationship between the two so that a desired shape can be obtained while securing a constant cutting allowance; and A step of displaying both on the image display means, a step of determining whether or not the displayed positional relationship is appropriate, and a step of performing the same arithmetic processing when the positional relationship is determined to be appropriate in the determination. means Characterized in that it includes a step of calculating a thickness reduction of the workpiece in more said positional relationship. A third aspect of the second aspect of the method for processing a curved member according to the present invention is a method for processing a curved member using an arithmetic processing unit and an image display unit, comprising the steps of: setting a workpiece to a predetermined position; A step of inputting data about a desired shape of the curved member to the arithmetic processing unit, a step of measuring the dimension of the workpiece, and a procedure of calculating the shape of the workpiece from the measurement result by the arithmetic processing unit. Moving the desired shape and the shape of the workpiece to be processed by the arithmetic processing means, and calculating a positional relationship between the two so that the desired shape can be obtained while securing a certain cutting allowance. A procedure for displaying both of them in a positional relationship on the image display means; A procedure for determining whether or not the positional relationship between the members is appropriate, and when the positional relationship between the two is determined to be appropriate in the determination, the arithmetic processing means calculates the thickness reduction of the workpiece in the positional relationship. And a procedure.
[0008]
Processing method of curved surface member of the present inventionFirst aspect ofIn, the calculated positional relationshipBoth inIs preferably added.
[0009]
On the other hand, a first mode of the first aspect of the curved surface member processing apparatus of the present invention includes an input unit, a thinning unit of a workpiece, a dimension measuring unit of the workpiece, and an arithmetic processing unit, A wall-thinning means, a wall-thinning mechanism for wall-thinning the member to be processed, a holding mechanism for adjusting the position and orientation of the member to be processed, and a command value to the wall-thinning mechanism and the holding mechanism according to the input wall-thinning amount. And a control unit that outputs the data about the desired shape of the curved member from the input means to the arithmetic processing means, and the measurement result of the workpiece to be processed is sent from the dimension measuring means to the arithmetic processing means. Is inputted, and the main component and the center of the desired shape are calculated from the data by the arithmetic processing means.CalculatedWorkpieceShapeThe principal component and the center of are calculated, the principal components of the two are matched, and in a state where the principal components are matched, it is determined whether or not there is a portion where a desired shape cannot be secured. If it is determined that there is a portion that cannot be secured, the desired shape is moved, and a positional relationship between the two that can obtain the desired shape while securing a constant cutting allowance is calculated. The amount of meat is calculated, the amount of thinning is input to the thinning means, and the member to be processed is thinned by the thinning means in accordance with the input amount of thinning.A second embodiment of the first aspect of the apparatus for processing a curved member according to the present invention includes an input unit, a wall-thinning unit for a member to be processed, a dimension measuring unit for a member to be processed, and an arithmetic processing unit. Means for reducing the thickness of the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and outputting a command value to the thinning mechanism and the holding mechanism according to the input thickness. A data processing unit for inputting data on a desired shape of the curved surface member from the input unit to the arithmetic processing unit, and inputting a measurement result of the workpiece to the arithmetic processing unit from the dimension measuring unit. The arithmetic processing means calculates a main component and a center of a desired shape from the data, calculates a main component and a center of the shape of the workpiece to be calculated from the measurement result, and matches the two main components. The main component In the matched state, it is determined whether there is a location where the desired shape cannot be secured.If it is determined in the determination that there is a location where the desired shape cannot be secured, the calculated shape of the workpiece is moved. The positional relationship between the two that can obtain the desired shape while securing a constant cutting allowance is calculated, the thickness reduction of the workpiece to be processed in the positional relationship is calculated, and the thickness reduction is transmitted to the thickness reduction means. The member to be processed is thinned by the thinning means in accordance with the input and the input thinning amount. A third embodiment of the first aspect of the apparatus for processing a curved member according to the present invention includes an input unit, a thinning unit for a workpiece, a dimension measuring unit for the workpiece, and an arithmetic processing unit. Means for reducing the thickness of the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and outputting a command value to the thinning mechanism and the holding mechanism according to the input thickness. A data processing unit for inputting data on a desired shape of the curved surface member from the input unit to the arithmetic processing unit, and inputting a measurement result of the workpiece to the arithmetic processing unit from the dimension measuring unit. The arithmetic processing means calculates a main component and a center of a desired shape from the data, calculates a main component and a center of the shape of the workpiece to be calculated from the measurement result, and matches the two main components. The main component In the matched state, it is determined whether or not there is a location where the desired shape cannot be secured.If it is determined in the determination that there is a location where the desired shape cannot be secured, the desired shape and the calculated shape of the workpiece are determined. The positional relationship between the two members, which can be moved to obtain a desired shape while securing a certain cutting allowance, is calculated, the thickness reduction of the workpiece to be processed in the positional relationship is calculated, and the thickness reduction means is used. The workpiece is thinned by the thinning means in accordance with the input thinning amount.
[0010]
Further, a second aspect of the apparatus for processing a curved member according to the present invention.First form ofIs input means, means for reducing the thickness of the workpiece, means for measuring the dimensions of the workpiece, and processing means, Image display means andWherein the wall-thinning means comprises a wall-thinning mechanism for thinning a member to be processed, a holding mechanism for adjusting the position and orientation of the member to be processed, and the wall-thinning mechanism and the holding mechanism according to an input wall-thinning amount. And a control unit for outputting a command value to the processing unit, wherein data on a desired shape of the curved surface member is input from the input unit to the arithmetic processing unit, and the workpiece to be processed is sent from the dimension measuring unit to the arithmetic processing unit. Is input by the arithmetic processing means, the shape of the workpiece is calculated from the measurement result, and the desired shape is moved to obtain a desired shape while securing a constant cutting allowance. The positional relationship is calculatedIs sent to the image display means, and the two images in the positional relationship are image-displayed by the image display means.The thinning amount of the member to be processed in the positional relationship is calculated, the thinning amount is input to the thinning means, and the thinning part is thinned by the thinning means according to the input thinning amount. Features.A second embodiment of the second aspect of the apparatus for processing a curved member according to the present invention includes an input unit, a wall-thinning unit for a workpiece, a dimension measuring unit for a workpiece, an arithmetic processing unit, and an image display unit. The thinning means comprises: a thinning mechanism for thinning a workpiece, a holding mechanism for adjusting the position and posture of the workpiece, and a thinning mechanism and a holding mechanism according to the input thinning amount. And a control unit that outputs a command value of the target member, the data about the desired shape of the curved member is input from the input means to the arithmetic processing means, and from the dimension measurement means to the arithmetic processing means, The measurement result is input, the shape of the workpiece is calculated from the measurement result by the arithmetic processing means, and the calculated shape of the workpiece is moved to obtain a desired shape while securing a constant cutting allowance. The positional relationship between the two Calculated and sent to the image display means, the image display means displays both the images in the positional relationship as images, calculates the thickness reduction of the workpiece in the positional relationship, and calculates the thickness reduction means. The workpiece is thinned by the thinning means in accordance with the input thinning amount. A third mode of the second aspect of the apparatus for processing a curved surface member according to the present invention includes an input unit, a thickness reducing unit for a workpiece, a dimension measuring unit for the workpiece, an arithmetic processing unit, and an image display unit. Wherein the wall-thinning means comprises a wall-thinning mechanism for wall-thinning the workpiece, And a control unit that outputs a command value to the thinning mechanism and the holding mechanism in accordance with the input thinning amount, and a curved member from the input means to the arithmetic processing means. The data on the desired shape of the workpiece is input, the measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the shape of the workpiece is calculated from the measurement result by the arithmetic processing unit. By moving the desired shape and the calculated shape of the workpiece to obtain a desired shape while securing a certain cutting allowance, the positional relationship between the two is calculated and sent to the image display means, and the image display is performed. A means for displaying both images in the positional relationship is displayed as an image, a thinning amount of the workpiece to be processed in the positional relationship is calculated, and the thinning amount is input to the thinning means. Workpiece by said thinning means Te is characterized in that it is thinning.
[0011]
Processing device for curved member of the present inventionFirst aspect ofIn the above, it is preferable that an image display means is added and the positional relationship between the two calculated by the image display means is displayed.
[0012]
[Action]
In the first aspect of the method for processing a curved member according to the present invention, first, a workpiece is set at a predetermined position, and data on a desired shape of the curved member is input. Is calculated. Next, the dimensions of the workpiece are measured by, for example, a coordinate detector. From the measurement result, the main component and the center of the workpiece are calculated. Thereafter, this main component is made to coincide with the main component of the desired shape. In this state, it is determined whether there is a portion where the desired shape cannot be secured. If it is determined in this determination that there is a portion where the desired shape cannot be ensured, the desired shape and / or the workpiece is moved, and the positional relationship between the two can be cut while securing the thickness reduction allowance. Is done. Next, the thickness reduction of the workpiece in this positional relationship is calculated. Thereafter, the reduced thickness is input to the reduced thickness means to reduce the thickness of the workpiece.
[0013]
Hereinafter, the dimension measurement and the thickness reduction are repeated a required number of times, so that the workpiece has a desired shape.
[0014]
In the second aspect of the method for processing a curved member according to the present invention, first, a workpiece is set at a predetermined position, and data on a desired shape of the curved member is input. Thereafter, the dimensions of the workpiece are measured by, for example, a coordinate detector. Next, the shape of the workpiece is calculated based on the measurement result. Thereafter, the desired shape and / or the member to be processed are moved, and the positional relationship between the two and the desired shape can be cut out while securing the thickness reduction. Next, the thickness reduction of the workpiece in this positional relationship is calculated. Thereafter, the reduced thickness is input to the reduced thickness means to reduce the thickness of the workpiece.
[0015]
Hereinafter, the dimension measurement and the thickness reduction are repeated a required number of times, so that the workpiece has a desired shape.
[0016]
On the other hand, in the first aspect of the curved member processing apparatus of the present invention, first, the member to be processed is set on the holding mechanism of the thinning means, and data on the desired shape of the curved member is input from the input means to the arithmetic processing means. Is entered. The arithmetic processing means obtains the principal component and the center of the desired shape based on the data. Thereafter, the dimension measuring means measures the dimensions of the workpiece and inputs the result to the arithmetic processing means. The arithmetic processing means obtains the main component and the center of the workpiece from the input measurement result, and matches the main component with the main component of the desired shape previously obtained. Next, the arithmetic processing means determines whether there is a portion where the desired shape cannot be secured in the workpiece in this state. If the arithmetic processing means determines in this determination that there is a portion where the desired shape cannot be ensured, both positions where the desired shape and / or the workpiece can be moved and the desired shape can be cut out while securing a certain thickness reduction. The relationship is determined, the thinning amount at that time is obtained, and the thinning amount is input to the thinning means. The thinning means obtains a required operation amount by the control unit in accordance with the input thinning amount, and operates the thinning mechanism and the holding mechanism to reduce the thickness of the workpiece by a required amount.
[0017]
Hereinafter, the measurement and the wall thinning operation are repeated to process the workpiece into a desired shape.
[0018]
On the other hand, in the second aspect of the curved member processing apparatus of the present invention, first, the member to be processed is set on the holding mechanism of the thinning means, and data on the desired shape of the curved member is input from the input means to the arithmetic processing means. Is entered. Thereafter, the dimension measuring means measures the dimensions of the workpiece and inputs the result to the arithmetic processing means. The arithmetic processing means obtains the positional relationship between the desired shape and / or the workpiece to be moved and the desired shape can be cut out while securing the thickness reduction, and also obtains the amount of thickness reduction at that time. The amount of wall thinning is input to the means. The thinning means obtains a required operation amount by the control unit in accordance with the input thinning amount, and operates the thinning mechanism and the holding mechanism to reduce the thickness of the workpiece by a required amount.
[0019]
Hereinafter, the measurement and the wall thinning operation are repeated to process the workpiece into a desired shape.
[0020]
【Example】
Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings, but the present invention is not limited to only the embodiments.
[0021]
FIG. 1 is an explanatory view of a method for processing a curved surface member of the present invention, FIG. 2 is a schematic view of an embodiment of a processing apparatus used in the processing method, FIG. 3 is a block diagram of the processing apparatus, and FIGS. FIGS. 7 and 8 are flowcharts of another embodiment of the processing procedure in the processing method, and FIGS. 7 and 8 are flowcharts of another embodiment of the processing procedure in the processing method. In the figure, 1 is an input means, 2 is an image display means, 3 is a thinning means, 4 is a dimension measuring means, 5 is an arithmetic processing means, 10 is a work station, 20 is a cutting device, and W is a workpiece (propeller material). ).
[0022]
As shown in FIGS. 2 and 3, the processing apparatus used in the processing method of the present invention includes an arithmetic processing unit 5, an input unit 1, an image display unit 2, a thinning unit 3, a dimension measuring unit 4, Is the main component. Specifically, the arithmetic processing means 5, the input means 1 and the image display means 2 are constituted by, for example, a workstation 10, and the thinning means 3 and the dimension measuring means 4 are provided, for example, between the coordinate detector 21 and the cutting tool 22. It is constituted by a numerically controlled cutting device 20 that can be switched. The cutting device 20 is configured to be able to control the position and orientation of the workpiece W placed on the bed 23, and the cutting tool 22 is adjusted in position and cutting depth so that a desired cutting amount can be secured. It is configured to be able to. Such a function is achieved by, for example, an NC machine tool having a pallet in which one orthogonal axis and one rotation axis are movable, and a main body in which three orthogonal axes and two rotation axes are movable.
[0023]
The workstation 10 and the cutting device 20 are connected by, for example, a wired or wireless communication line.
[0024]
Next, an embodiment of a method of processing a curved surface member by the processing apparatus of the embodiment of the present invention configured as described above will be described with reference to the explanatory diagram of FIG. 1 and the flowcharts shown in FIGS. .
[0025]
Step 1: The propeller material W is set on the bed (holding mechanism) 23 of the cutting device 20.
[0026]
Step 2: Data relating to the desired shape R of the curved surface member is input from the keyboard 11 (input means 1) of the workstation 10.
[0027]
Step 3: The arithmetic processing unit 12 of the workstation 10 calculates a main component of the desired shape R and its center based on the input data.
[0028]
Step 4: The dimensions of the propeller material W are measured by the coordinate detector 21 provided in the cutting device 20, and the measurement results are input to the arithmetic processing unit 12 of the workstation 10 via a communication line.
[0029]
Step 5: The arithmetic processing unit 12 calculates the main component and the center of the propeller material A based on the input measurement result.
[0030]
Step 6: The arithmetic processing section 12 matches the main component of the propeller material A with the previously calculated main component of the desired shape R, and outputs the state to the image display section 13.
[0031]
Step 7: The arithmetic processing unit 12 determines whether or not there is a portion where the desired shape R cannot be secured in the propeller material A in this state. This determination is made, for example, by evaluating the difference between the outline of the propeller material A and the outline of the desired shape R.
[0032]
Step 8: When the arithmetic processing unit 12 determines that there is a portion where the desired shape cannot be ensured in the propeller material A in the above determination, the arithmetic processing unit 12 appropriately moves the desired shape R and secures a predetermined cutting allowance at that portion as well. The positional relationship between both A and R from which the shape R can be cut is calculated, and the state is output to the image display unit 13.
[0033]
Step 9: When the operator determines that the positional relationship is appropriate, the arithmetic processing unit 12 continues the arithmetic processing in accordance with the instruction from the operator, calculates the cutting allowance (thickness reduction amount) of the propeller material A, and also executes the cutting device. The amount of cutting by 20 is calculated.
[0034]
Step 10: The arithmetic processing unit 12 inputs the cutting amount to the cutting device 20 via a communication line.
[0035]
Step 11: The cutting device 20 calculates the moving amount (rotation amount) of the bed 23 and the cutting amount of the cutting tool (cutting tool) 22 by the control unit 24 according to the cutting amount.
[0036]
Step 12: The control unit 24 of the cutting device 20 moves the bed 23 according to the movement (rotation) amount, and cuts the propeller blank W into a required amount by cutting into the cutting tool 22 with the cut amount.
[0037]
Thereafter, Steps 4 to 12 are repeated to obtain a propeller having a desired shape R.
[0038]
In this embodiment, the desired shape R is moved in step 8, but the propeller material A may be moved, or both A and R may be moved appropriately.
[0039]
Next, another embodiment of the method for processing a curved member according to the present invention will be described with reference to flowcharts shown in FIGS.
[0040]
Step 1: The propeller blank W is set on the bed 23 (holding mechanism) of the cutting device 20.
[0041]
Step 2: Data relating to the desired shape R of the curved surface member is input from the keyboard 11 (input means 1) of the workstation 10.
[0042]
Step 3: The dimensions of the propeller material W are measured by the coordinate detector 21 provided in the cutting device 20, and the measurement result is input to the arithmetic processing unit 12 via a communication line.
[0043]
Step 4: The arithmetic processing unit 12 calculates the shape of the propeller material A based on the input measurement result.
[0044]
Step 5: The arithmetic processing unit 12 calculates the positional relationship between the two A and R, which can appropriately move the desired shape R and cut out the desired shape R while securing a certain cutting allowance, and displays the state as an image. Output to the unit 13.
[0045]
Step 6: When the positional relationship is determined by the operator to be appropriate, the arithmetic processing unit 12 continues the arithmetic processing in accordance with the instruction from the operator, calculates the cutting allowance (thickness reduction amount) of the propeller material A, and uses the cutting device. The amount of cutting by 20 is calculated.
[0046]
Step 7: The arithmetic processing unit 12 inputs the cutting amount to the cutting device 20 via a communication line.
[0047]
Step 8: The cutting device 20 calculates the amount of movement (the amount of rotation) of the bed 23 and the amount of cutting of the cutting tool (cutting tool) 22 by the control unit 24 in accordance with the amount of cutting.
[0048]
Step 9: The control unit 24 of the cutting device 20 moves (rotates) the bed 23 according to the movement amount and cuts the propeller blank W into a required amount by cutting the cutting tool 22 into the cutting tool 22 at the cutting amount.
[0049]
Thereafter, steps 3 to 9 are repeated to obtain a propeller having a desired shape R.
[0050]
In this embodiment, the desired shape R is moved in step 5, but the propeller material A may be moved as in the previous embodiment, or both A and R may be moved appropriately.
[0051]
【The invention's effect】
As described above, according to the present invention, a member having a three-dimensional curved surface, such as a propeller, can be processed fully automatically, so that the manufacturing process can be significantly reduced. Also, even if the propeller material is over-cut in the course of production, the position and orientation of the propeller material will be adjusted in the next processing step so as to eliminate the over-cut, and An excellent effect is obtained in that a finished product having a predetermined size and shape can be obtained even if a portion occurs during the production. For this reason, there is also obtained an effect that it is possible to avoid a delivery deadline due to excessive local cutting. In addition, since all the processes are automated, an excellent effect of stabilizing product quality can be obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a method for processing a curved member according to the present invention.
FIG. 2 is a schematic view of an embodiment of a processing apparatus used in the processing method.
FIG. 3 is a block diagram of the processing apparatus.
FIG. 4 is a part of a flowchart of one embodiment of a processing procedure in the processing method.
FIG. 5 is a part of a flowchart of the embodiment.
FIG. 6 is a part of the flowchart of the embodiment.
FIG. 7 is a part of a flowchart of another working example of the working procedure in the working method.
FIG. 8 is a part of a flowchart of the embodiment.
FIG. 9 is an explanatory view of a conventional method for processing a curved member.
[Explanation of symbols]
1 Input means
2 Image display means
3 Thinning means
4 Dimension measurement means
5 arithmetic processing means
10 Workstation
11 Keyboard
12 arithmetic processing unit
13 Image display
20 Cutting equipment
21 Coordinate detector
22 Cutting Tools (Bite)
23 beds
24 control unit

Claims

A method for processing a curved surface member using arithmetic processing means, comprising: setting a workpiece to a predetermined position;
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Calculating the principal component and the center of the desired shape from the data by the arithmetic processing means;
A step of measuring the dimensions of the workpiece and inputting it to the processing means;
A procedure of calculating a main component and a center of the shape of the workpiece to be processed calculated from the measurement result by the arithmetic processing means;
A step of matching the main component of the shape of the workpiece to be calculated with the main component of the desired shape by the arithmetic processing means,
A procedure for determining whether or not there is a location where a desired shape cannot be ensured in a state where the two main components are matched by the arithmetic processing means,
If it is determined in the above determination that there is a portion where the desired shape cannot be ensured, the same shape processing unit moves the desired shape and calculates a positional relationship between the two so that the desired shape can be obtained while securing a certain cutting allowance. Steps to
Calculating the thickness of the workpiece in the positional relationship by the arithmetic processing means.

A method for processing a curved surface member using arithmetic processing means, comprising: setting a workpiece to a predetermined position;
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Calculating the principal component and the center of the desired shape from the data by the arithmetic processing means;
A step of measuring the dimensions of the workpiece and inputting it to the processing means;
A procedure of calculating a main component and a center of the shape of the workpiece to be processed calculated from the measurement result by the arithmetic processing means;
A step of matching the main component of the shape of the workpiece to be calculated with the main component of the desired shape by the arithmetic processing means,
In the state where the two main components are matched by the arithmetic processing means, a desired shape can be secured. A procedure for determining whether or not there is a part that cannot be
If it is determined in the above determination that there is a portion where the desired shape cannot be ensured, the shape of the workpiece calculated by the arithmetic processing means is moved to obtain a desired shape while securing a constant cutting allowance. Calculating the positional relationship between the two,
Calculating the thickness of the workpiece in the positional relationship by the arithmetic processing means.

A method for processing a curved surface member using arithmetic processing means, comprising: setting a workpiece to a predetermined position;
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Calculating the principal component and the center of the desired shape from the data by the arithmetic processing means;
A step of measuring the dimensions of the workpiece and inputting it to the processing means;
A procedure of calculating a main component and a center of the shape of the workpiece to be processed calculated from the measurement result by the arithmetic processing means;
A step of matching the main component of the workpiece with the main component of the desired shape by the arithmetic processing means;
A step of determining whether or not there is a place where a desired shape cannot be secured in a state where the two main components are matched by the arithmetic processing means;
If it is determined in the above determination that there is a portion where the desired shape cannot be secured, the desired shape and the calculated shape of the workpiece are moved by the arithmetic processing means to obtain a desired shape while securing a constant cutting allowance. Calculating a positional relationship between the two,
Calculating the thickness of the workpiece in the positional relationship by the arithmetic processing means.

A processing method of a curved surface member using an arithmetic processing unit and an image display unit, wherein a step of setting a workpiece to a predetermined position,
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Measuring the dimensions of the workpiece,
A procedure of calculating the shape of the workpiece from the measurement result by the arithmetic processing means, and a position where the desired shape is obtained by moving the desired shape by the arithmetic processing means and securing a certain cutting allowance. Calculating the relationship;
Displaying both of the calculated positional relationship on the image display means,
A procedure for determining whether or not the displayed positional relationship is appropriate;
A step of calculating the amount of thickness reduction of the workpiece in the positional relationship by the arithmetic processing means if the positional relationship between the two is determined to be valid in the determination. .

A processing method of a curved surface member using an arithmetic processing unit and an image display unit, wherein a step of setting a workpiece to a predetermined position,
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Measuring the dimensions of the workpiece,
A procedure of calculating the shape of the workpiece from the measurement result by the arithmetic processing means, and moving the shape of the workpiece calculated by the arithmetic processing means to obtain a desired shape while securing a constant cutting allowance A procedure for calculating the positional relationship between the two, and a procedure for displaying both of the calculated positional relationship on the image display means,
A procedure for determining whether or not the displayed positional relationship is appropriate;
When the positional relationship between the two is determined to be valid in the determination, a procedure for calculating the thickness reduction of the workpiece in the positional relationship by the arithmetic processing means
And a method of processing a curved surface member.

A processing method of a curved surface member using an arithmetic processing unit and an image display unit, wherein a step of setting a workpiece to a predetermined position,
Inputting data about a desired shape of the curved surface member to the arithmetic processing means;
Measuring the dimensions of the workpiece,
A procedure of calculating the shape of the workpiece from the measurement result by the arithmetic processing means, and moving the desired shape and the calculated shape of the workpiece by the arithmetic processing means to secure a predetermined cutting allowance. A procedure for calculating the positional relationship between the two that can obtain the shape,
Displaying both of the calculated positional relationship on the image display means,
A procedure for determining whether or not the displayed positional relationship is appropriate;
When the positional relationship between the two is determined to be valid in the determination, a procedure for calculating the thickness reduction of the workpiece in the positional relationship by the arithmetic processing means
And a method of processing a curved surface member.

4. The method for processing a curved member according to claim 1 , further comprising a step of displaying an image of both of the calculated positional relationship.

Input means, a means for reducing the thickness of the workpiece, a means for measuring the dimensions of the workpiece, and an arithmetic processing means,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the arithmetic processing unit
A principal component and a center of a desired shape are calculated from the data,
The main component and the center of the shape of the workpiece to be calculated from the measurement result are calculated,
The main components of the two are matched,
In the state where the main components are matched, it is determined whether there is a place where a desired shape cannot be secured,
If it is determined in the determination that there is a portion where the desired shape cannot be secured, the desired shape is moved, and a positional relationship between the two that can obtain the desired shape while securing a constant cutting allowance is calculated.
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
An apparatus for processing a curved surface member, wherein the member to be processed is reduced in thickness by the thinning means in accordance with the input thinning amount.

Input means, means for reducing the thickness of the workpiece, Comprising a dimension measuring means and an arithmetic processing means,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the arithmetic processing unit
A principal component and a center of a desired shape are calculated from the data,
The main component and the center of the shape of the workpiece to be calculated from the measurement result are calculated,
The main components of the two are matched,
In the state where the main components are matched, it is determined whether there is a place where a desired shape cannot be secured,
If it is determined in the above determination that there is a portion where the desired shape cannot be ensured, the calculated shape of the workpiece is moved, and the positional relationship between the two can be obtained while securing a constant cutting allowance. Calculated,
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
The member to be processed is thinned by the thinning means according to the input thinning amount.
An apparatus for processing a curved surface member.

Input means, a means for reducing the thickness of the workpiece, a means for measuring the dimensions of the workpiece, and an arithmetic processing means,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, By the arithmetic processing means,
A principal component and a center of a desired shape are calculated from the data,
The main component and the center of the shape of the workpiece to be calculated from the measurement result are calculated,
The main components of the two are matched,
Whether or not there is a place where a desired shape cannot be secured in a state where the main components are matched.
Is determined,
If it is determined in the above determination that there is a portion where the desired shape cannot be ensured, the desired shape and the calculated shape of the workpiece are moved to obtain the desired shape while securing a constant cutting allowance. The positional relationship is calculated,
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
The member to be processed is thinned by the thinning means according to the input thinning amount.
An apparatus for processing a curved surface member.

Input means, thinning means of the member to be processed, dimension measuring means of the member to be processed, arithmetic processing means , image display means ,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the arithmetic processing unit
The shape of the workpiece is calculated from the measurement result,
By moving the desired shape, the positional relationship between the two that can obtain the desired shape while securing a certain cutting allowance is calculated and sent to the image display means, and the two in the positional relationship are calculated by the image display means. The image is displayed ,
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
An apparatus for processing a curved surface member, wherein the member to be processed is reduced in thickness by the thinning means in accordance with the input thinning amount.

Input means, means for reducing the thickness of the member to be processed, means for measuring the size of the member to be processed, arithmetic processing means, and image display means,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the arithmetic processing unit
The shape of the workpiece is calculated from the measurement result,
By moving the calculated shape of the workpiece, the positional relationship between the two, which can obtain the desired shape while securing a certain cutting allowance, is calculated and sent to the image display means. Both of the two are displayed as images,
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
The member to be processed is thinned by the thinning means according to the input thinning amount.
An apparatus for processing a curved surface member.

Input means, means for reducing the thickness of the member to be processed, means for measuring the size of the member to be processed, arithmetic processing means, and image display means,
The wall-thinning means includes a wall-thinning mechanism for thinning the workpiece, a holding mechanism for adjusting the position and orientation of the workpiece, and a command to the wall-thinning mechanism and the holding mechanism according to the input wall-thickness. A control unit that outputs a value,
Data on a desired shape of the curved surface member is input from the input means to the arithmetic processing means,
The measurement result of the workpiece is input from the dimension measurement unit to the arithmetic processing unit, and the arithmetic processing unit
The shape of the workpiece is calculated from the measurement result,
By moving the desired shape and the calculated shape of the workpiece to obtain a desired shape while securing a certain cutting allowance, the positional relationship between the two is calculated and sent to the image display means, and the image display is performed. By means, both in the positional relationship are displayed as images,
The thickness reduction of the workpiece in the positional relationship is calculated,
The thinning amount is input to the thinning means,
The member to be processed is thinned by the thinning means according to the input thinning amount.
An apparatus for processing a curved surface member.

Image display means becomes addition is specified, the processing apparatus of the curved member according to claim 8, 9 or 10, wherein both in a positional relationship calculated by said image display means, characterized in that it is displayed.