JP6214697B2 - 熱による焦点ずれの補正による三次元ワークピースの製造方法及び装置 - Google Patents
熱による焦点ずれの補正による三次元ワークピースの製造方法及び装置 Download PDFInfo
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Description
14…粉末塗布手段、 16…キャリア、 18…照射部、 20…ハウジング、
22…放射ビーム、 24…放射源、 26…開口部、 28…光学部、
30…ビームエキスパンダー(光学要素)、 32…収束レンズ(光学要素)、
34…スキャナ部(光学要素)、 35…対物レンズ(光学要素)、
36…制御部、 38…ガス供給路、 39…高温検出手段、 40…ガス源、
42…排出路、 44…搬送手段、 46…フィルター(濾過器)、
48…火面測定手段。
Claims (11)
- 三次元ワークピースの製造方法であって、
キャリア(16)上に原料粉末を塗布する工程と、
積層造形法により前記キャリア(16)上の原料粉末から前記ワークピースを製造するために、放射ビーム(22)を放射する放射源(24)と複数の光学要素(30、32、34、35)を備える照射部(18)によって、前記キャリア(16)上に塗布された原料粉末に電磁放射線又は粒子放射線を選択的に照射する工程とを有し、
前記照射部(18)の作動を、該照射部(18)の少なくとも1つの光学要素(30、32、34、35)の少なくとも1つの光学特性の作動温度に依存した変化に応じて制御し、
前記作動温度に依存した変化が、放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における作動温度に依存したずれに対応するものであることを特徴とする方法。 - 前記照射部(18)の作動を、該照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における作動温度に依存したずれを補正するように制御することを特徴とする請求項1に記載の方法。
- 前記照射部(18)の作動を、該照射部(18)の放射源(24)によって放射された放射ビーム(22)の出力に応じた、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向におけるずれを表している補正関数に応じて制御することを特徴とする請求項1又は請求項2に記載の方法。
- 前記補正関数を、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の出力に応じた、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向におけるずれの較正のための測定を通して得られたデータについて実行された回帰分析の結果により得ることを特徴とする請求項3に記載の方法。
- 前記較正のための測定を、火面測定方法及び高温測定方法の少なくとも一方により実行することを特徴とする請求項4に記載の方法。
- 三次元ワークピースの製造装置(10)であって、
キャリア(16)上に原料粉末を塗布するように適合された原料粉末塗布手段(14)と、
放射ビーム(22)を放射するように構成された放射源(24)と複数の光学要素(30、32、34、35)を備え、かつ、積層造形法により前記キャリア(16)上の原料粉末から前記ワークピースを製造するために、前記キャリア(16)上に塗布された原料粉末に電磁放射線又は粒子放射線を選択的に照射するように適合された照射部(18)と、
前記照射部(18)の少なくとも1つの光学要素(30、32、34、35)の少なくとも1つの光学特性の作動温度に依存した変化に応じて前記照射部(18)の作動を制御するように適合された制御部(36)を具備するものであり、
前記作動温度に依存した変化が、放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における作動温度に依存したずれに対応するものであることを特徴とする装置。 - 前記制御部(36)は、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における作動温度に依存したずれを補正するように、前記照射部(18)の作動を制御するように適合されたものであることを特徴とする請求項6に記載の装置。
- 前記制御部(36)は、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の出力に応じた、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向におけるずれを表している補正関数に応じて前記照射部(18)の作動を制御するように適合されたものであることを特徴とする請求項6又は請求項7に記載の装置。
- 前記補正関数は、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の出力に応じた、前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向におけるずれの較正のための測定を通して得られたデータについて実行された回帰分析の結果より得られるものであることを特徴とする請求項8に記載の装置。
- さらに、火面測定方法による較正のための測定を実行するように適合された火面測定手段、及び、高温測定方法による較正のための測定を実行するように適合された高温検出手段(39)の少なくとも一方を具備するものであることを特徴とする請求項9に記載の装置。
- 三次元ワークピースの製造装置(10)の製造方法であって、
積層造形法によりキャリア(16)上の原料粉末から前記ワークピースを製造するために、放射ビーム(22)を放射するように構成された放射源(24)と少なくとも1つの光学要素(30、32、34、35)を備え、前記キャリア(16)上に塗布された原料粉末に電磁放射線又は粒子放射線を選択的に照射するように適合された照射部(18)を提供する工程と、
前記放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における作動温度に依存したずれを決定する工程と、
前記照射部(18)の放射源(24)によって放射された放射ビーム(22)の焦点位置の前記放射ビーム(22)のビーム路に沿った方向における温度に依存したずれが閾値未満である場合に、前記装置(10)の最終的な据え付けに対して前記照射部(18)の光学要素(30、32、34、35)を選定する工程とを有することを特徴とする方法。
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