JP7471002B2 - 金属製造用途のためのマルチモードレーザ装置 - Google Patents
金属製造用途のためのマルチモードレーザ装置 Download PDFInfo
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Description
- この装置は外部レーザを含み、エネルギーが光ファイバによってヘッドに伝送されるので、エネルギーの損失や、動作中の熱、機械的相互作用及びレーザ放射の反射によるファイバ破損及びファイバコネクタ損傷の可能性が生じる。
- 記載されたシステムは、粉末クラッディングオペレーションにのみ適用され、付加製造、ワイヤ若しくは粉末クラッディング、レーザ溶接、レーザ切断、レーザテクスチャリング及びレーザ研磨には適用できない。
- 記載されたシステムは、粉末クラッディングオペレーションにのみ適用され、付加製造、ワイヤ若しくは粉末クラッディング、レーザ溶接、レーザ切断、レーザテクスチャリング及びレーザ研磨には適用できない。
- このシステムはレーザ反射保護に対処していない。これにより、システムの寿命が短くなることでレーザによる部品の破壊が生じる可能性がある。
- 発明に用いられるレーザの数は2つ又は3つのレーザである。
- このシステムは、粉末を処理することしかできない。
- このシステムは、プロセスの重要な側面である不活性ガスの分配については記載していない。
- このシステムはマルチビーム粉末ノズルにのみ適用される。
- このシステムは、ヘッド接続に対処していない。
また、先行技術文献として米国特許出願公開第2018/318929号明細書を挙げる。
Claims (13)
- ハウジングと、
前記ハウジングに統合されたハウジング内の中央堆積ノズル(130)を介して、中心軸ワイヤ供給ガイドチューブから焦点(120)に、金属ワイヤ(195)を送ることが可能なワイヤ引っ張りシステム(190)と、
加工表面における前記焦点(120)にレーザ光ビーム(115)を送るための複数の挿入可能レーザアセンブリを備える複数の軸外レーザ光源(105)であって、精密な調整が可能であり且つ精密に向けられた焦点に高有効パワーを送ることが可能である固定ロック機構(140)を備え、背面反射を検出するとともに各前記レーザ光源(105)の瞬間的な動作停止を可能にするフォトセンサを介して実現される背面反射保護部(185)を備える複数の軸外レーザ光源(105)と、
前記焦点(120)にシールドガスを送ることが可能なシールドガスデリバリーシステム(170)と、
冷却システムと、を備え、
付加製造、レーザクラッディング、及び非自生レーザ溶接のうちの1つ以上を実行することが可能である、レーザ装置。 - 前記統合ワイヤ引っ張りシステム(190)は自動供給圧力制御を備える、請求項1に記載のレーザ装置。
- 前記レーザ装置は、前記焦点(120)に粉末供給材料を供給するための同軸粉末供給チャネルをさらに備え、
前記レーザ装置は、金属ワイヤと金属粉末を同時に用いる付加製造を実行するようさらに構成されている、請求項1又は2に記載のレーザ装置。 - 前記複数の挿入可能レーザアセンブリは、前記ハウジング内部の複数の固体ダイオードレーザ(175)を備える、請求項1~3のいずれか一項に記載のレーザ装置。
- 前記ハウジング内部の前記複数の固体ダイオードレーザ(175)は、1つの同じレーザアセンブリ内に複数のダイオードレーザを収容してレーザパワーを増大させることを容易にすることが可能である、請求項4に記載のレーザ装置。
- 前記ハウジング内部の前記複数の固体ダイオードレーザ(175)は、各々、それぞれのレーザアセンブリに適合され、前記それぞれのレーザアセンブリの位置合わせを補助するためにビームを照準することが可能である、請求項4又は5に記載のレーザ装置。
- 前記複数の軸外レーザ光源(105)は、ファイバ結合固体ダイオードレーザ、並びに/又は前記ハウジングの内部若しくは外部のファイバ結合ダイオード励起固体レーザ、並びに/又は前記ハウジング内部の無ファイバ固体ダイオードレーザを備える、請求項4~6のいずれか一項に記載のレーザ装置。
- 前記レーザ装置は、金属ワイヤと金属粉末を独立して若しくは同時に用いる付加製造、レーザクラッディング、自生及び非自生レーザ溶接、レーザ切断、レーザテクスチャリング、並びに/又は、レーザ研磨を実行することが可能である、請求項1~7のいずれか一項に記載のレーザ装置。
- 前記複数のレーザ光源(105)は、赤外スペクトル光のレーザ光又は可視スペクトル光のレーザ光又は紫外線スペクトル光のレーザ光を放射する、請求項1~8のいずれか一項に記載のレーザ装置。
- シールドガスを加工表面上に拡散させるための着脱可能シールドガス(170)カウリングをさらに備える、請求項1~9のいずれか一項に記載のレーザ装置。
- ワイヤ供給チャネルをさらに備え、
前記ワイヤ供給チャネルには、ワイヤ供給材料(195)が前記中央堆積ノズル(130)を通ってワイヤ材料ガイドチャネル内に引き込まれるときに前記ワイヤ供給材料(195)の先端を自動的に検出するためのワイヤ材料位置センサ(240)が組み込まれている、請求項1~10のいずれか一項に記載のレーザ装置。 - 前記ワイヤ材料位置センサ(240)は、光電センサ又は容量センサ又はホール効果電気センサを備え、
前記光電センサ又は前記容量センサ又は前記ホール効果電気センサは、
前記ワイヤ供給材料が前記ワイヤ材料ガイドチャネル(135)を通って引き上げられるときに前記ワイヤ供給材料の先端の正確な位置を検出することによって、前記レーザ装置の前記中央堆積ノズル(130)の先端から加工表面までの精密な距離を自動的に制御することが可能であり、且つ、
前記ワイヤを前記焦点(120)までの精密な距離に正確に挿入するために前記統合ワイヤ引っ張りシステムの自動供給圧力制御を計算することが可能である、請求項11に記載のレーザ装置。 - 前記ワイヤ供給チャネルの周囲に配された円錐状ノズル(215)を介して粉末が同軸で送られるか、あるいは、前記ワイヤ供給チャネルを周方向に囲むように配置された個別の平行粉末ジェットを提供する複数の独立した軸外粉末ノズル(200)で粉末が同軸で送られる、請求項11又は12に記載のレーザ装置。
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