JP2021521008A - エネルギービームの中央縦軸に関して粉末流を調整するための装置 - Google Patents
エネルギービームの中央縦軸に関して粉末流を調整するための装置 Download PDFInfo
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Abstract
Description
Claims (9)
- エネルギービーム、特に粉末堆積溶接用に設計された加工ヘッド用のレーザビームの中央縦軸に対して粉末流を調整するための装置であって、
前記粉末流は、前記加工ヘッド(5)のワークピースに面する側に配置された、環状ギャップノズル(1)が形成された粉末フィードにより供給され、
前記環状ギャップノズルは、前記ワークピースの方向に円錐形状となるように具現された、環状に配置された複数のノズル、又は傾斜しかつ出口開口部が互いに向き合う、対向配置された少なくとも2つのノズルで形成され、前記エネルギービーム(4)のエネルギーで溶融した粉末材料が堆積される面の上方に配置された領域(3)で、粉末材料(2)の粒子が、複数の方向から鋭角をなして合流するように設計され、
前記エネルギービーム(4)は、溶融した前記粉末材料が堆積される平面に対して位置合わせされ、
前記エネルギービーム(4)の中央縦軸、特にレーザビームの光軸に対して、前記エネルギービーム(4)の中央縦軸に垂直な平面で、2次元的又は3次元的に前記粉末フィードの位置合わせをするためのデバイスが、前記加工ヘッド(5)に設けられ、
放射源(6)から出発した電磁放射は、前記粉末材料の粒子が合流する前記領域(3)に、側方から線状ビーム(6.1)として向けられ、
2次元光検出器アレイ(7)は、前記線状ビーム(6.1)に垂直な平面に設けられ、
前記光検出器アレイ(7)は、電磁放射の強度を空間的に分解してキャプチャするように設計されており、電子評価部(8)に接続されており、
前記電子評価部(8)は、指定可能な閾値を超える強度が前記光検出器アレイ(7)によってキャプチャされた被照射領域(9)の形状、大きさ及び/又は長さを、空間的に分解された方法で確認するように設計されており、
前記被照射領域(9)は、調整時の低減したパワーのレーザビーム(4)が照射された粉末の粒子表面から、前記ワークピースの表面に向かって加速された粉末粒子の方向に位置する、レーザビーム(4)により加熱された粒子が発散的に移動する前記被照射領域(9)の部分領域まで延びていることを特徴とする装置。 - 前記放射源(6)は、波長区間内の電磁放射を放射し、及び/又は波長区間に対して透明なバンドパスフィルタが前記被照射領域(9)と前記検出器アレイ(7)との間に配置され、それぞれの波長区間が好ましくは、700nmから1200nmの範囲であることを特徴とする請求項1に記載の装置。
- 前記エネルギービーム(4)として用いられるレーザビームの波長が前記波長区間の外側にあり、前記線状ビーム(6.1)の波長が前記波長区間内にあることを特徴とする請求項2に記載の装置。
- 前記エネルギービーム(4)は、調整中に、粉末堆積溶接と比べて低減されたパワーで動作することができ、当該パワーは前記エネルギービーム(4)との相互作用領域で粒子を加熱するのに十分であるが、粉末材料の粒子の溶融が回避されることを特徴とする請求項1から3のいずれか1項に記載の装置。
- 前記放射源(6)が前記線状ビーム(6.1)とともに前記検出器アレイ(7)が配置された平面に対して平行に移動可能であり、移動中の強度の空間的に分解されたキャプチャ及び評価が、少なくとも前記領域(3)の中心領域において、対応して設計された前記電子評価部(8)を用いて行われることを特徴とする請求項1から4のいずれか1項に記載の装置。
- 前記電子評価部(8)は、前記粉末フィードの2次元位置合わせのための前記デバイスを用いた手動調整に使用することができる光学及び/又は音響表示ユニットを有し、及び/又は、
前記電子評価部(8)は、前記粉末フィードの2次元位置合わせのための前記デバイスの制御された自動調整が得られるように設計されている、ことを特徴とする請求項1から5のいずれか1項に記載の装置。 - 前記電子評価部(8)は、前記被照射領域(9)内でキャプチャされた、設定可能な強度閾値を超えた個々のキャプチャ画像点の数を確認及び評価するように設計されており、及び/又は
前記被照射領域(9)内で検出された前記画像点を用いたパターン認識を、好ましくは最適なパターンを考慮して、行うことを特徴とする請求項1から6のいずれか1項に記載の装置。 - 前記エネルギービーム(4)の中央縦軸に対する前記粉末フィードの2次元位置合わせのための前記デバイスは、互いに垂直に整列した2つの方向に互いに独立して移動可能な2つのプラットフォームで形成され、これに前記粉末フィード、及び/又は、
エネルギービーム(4)をその中央縦軸に平行にシフトさせる光学ユニットが固定され、及び/又は、
エネルギービーム(4)の中央縦軸に対する前記粉末フィードの3次元位置合わせのための前記デバイスは、移動可能な前記プラットフォームに対して垂直な向きの付加的な移動可能性を有する、ことを特徴とする請求項1から7のいずれか1項に記載の装置。 - 前記2つのプラットフォームは、それぞれ駆動装置、好ましくはリニアドライブ、特に好ましくはステッパモータによって移動可能であり、前記電子評価部(8)によって制御され得ることを特徴とする請求項8に記載の装置。
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DE102018202203.8 | 2018-02-13 | ||
DE102018202203.8A DE102018202203B4 (de) | 2018-02-13 | 2018-02-13 | Anordnung zur Justierung einer Pulverströmung in Bezug zur mittleren Längsachse eines Energiestrahls |
PCT/EP2019/053541 WO2019158580A1 (de) | 2018-02-13 | 2019-02-13 | Anordnung zur justierung einer pulverströmung in bezug zur mittleren längsachse eines energiestrahls |
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DE102021208745A1 (de) | 2021-08-11 | 2023-02-16 | Trumpf Laser- Und Systemtechnik Gmbh | Verfahren und Vorrichtung zur Pulverinjektionsüberwachung beim Laserstrahlauftragschweißen |
US20230089809A1 (en) * | 2021-09-23 | 2023-03-23 | Rolls-Royce Corporation | Powder flow measurement in additive manufacturing systems |
DE102021133636B4 (de) | 2021-12-17 | 2024-03-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Pulverzufuhrdüse, insbesondere für die Pulverzufuhr beim Laserauftragschweißen, und Verfahren zum Betrieb der Pulverzufuhrdüse |
US11860080B2 (en) * | 2021-12-29 | 2024-01-02 | Rolls-Royce Corporation | System for monitoring particles suspended in fluid stream |
DE102022105913A1 (de) | 2022-03-14 | 2023-09-14 | HPL Technologies GmbH | Vorrichtung für ein Laser-Beschichtungsverfahren |
DE102022121926A1 (de) | 2022-08-30 | 2024-02-29 | HPL Technologies GmbH | Vorrichtung für ein Laser-Beschichtungsverfahren |
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WO2017114965A1 (fr) * | 2015-12-31 | 2017-07-06 | Ecole Centrale De Nantes | Procédé et système pour le réglage d'un dispositif de fabrication additive |
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CN112074361B (zh) | 2023-03-28 |
EP3752309A1 (de) | 2020-12-23 |
CN112074361A (zh) | 2020-12-11 |
US20210046708A1 (en) | 2021-02-18 |
US11890675B2 (en) | 2024-02-06 |
DE102018202203A1 (de) | 2019-08-14 |
DE102018202203B4 (de) | 2022-06-23 |
JP7163396B2 (ja) | 2022-10-31 |
WO2019158580A1 (de) | 2019-08-22 |
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