JP4076091B2 - レーザー焼結用非接触型温度センサーの連続校正 - Google Patents
レーザー焼結用非接触型温度センサーの連続校正 Download PDFInfo
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- JP4076091B2 JP4076091B2 JP2005143596A JP2005143596A JP4076091B2 JP 4076091 B2 JP4076091 B2 JP 4076091B2 JP 2005143596 A JP2005143596 A JP 2005143596A JP 2005143596 A JP2005143596 A JP 2005143596A JP 4076091 B2 JP4076091 B2 JP 4076091B2
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Description
102 処理チャンバー
104 レーザー・ビーム
106 部品ケーキ
108 レーザー
110 標的面
114 走査システム
116 レーザー窓
120、122 放射放熱素子
123、129 粉体供給ベッド
124、126 粉体供給システム
125、127 プッシュアップ・ピストン
128 中央部品ベッド・ピストン
130 平滑ローラー(逆転ローラー)
132 粉体ベッド(部品ベッド)
136、138 オーバーフロー容器
140 黒体放射体
142、144、145 IRセンサー
Claims (24)
- レーザー焼結によって三次元物品を成形する方法であって、
(a)一定量の粉体を処理チャンバー内の標的領域に供給するステップ、
(b)拡散機構により前記一定量の粉体を拡散し粉体層を形成するステップ、
(c)前記粉体が拡散され層を成す間、前記粉体を加熱するステップ、
(d)前記標的領域にエネルギー・ビームを照射し、前記粉体層を完全な層と成すステップ、
(e)三次元物品を成形するため、前記ステップ(a)〜(d)を反復し、隣接層と一体化された別の層を成形するステップ
の各ステップを有して成る方法において、
少なくとも1つの層を成形するステップにおいて、処理チャンバー内で前記拡散機構に取り付けられた放射体が該センサー手段に放射エネルギーを放射し、校正手段が前記センサー手段から測定値を受信し、該センサー手段の検出温度を前記放射体からの設定放射エネルギー信号を変換した温度と比較することにより、前記三次元物品の成形の間、前記センサー手段を校正することを特徴とする方法。 - 前記センサー手段として非接触型温度センサーを使用することを特徴とする請求項1記載の方法。
- 前記非接触型温度センサーとしてIRセンサーを使用することを特徴とする請求項2記載の方法。
- 前記処理チャンバー内に複数のIRセンサーを使用することを特徴とする請求項1記載の方法。
- IR放熱器を用いて前記処理チャンバー内の前記粉体を加熱することを特徴とする請求項1記載の方法。
- 各々の層を成形するステップにおいて、前記放射体を前記拡散機構に取り付け、前記三次元物品を成形する間、前記センサー手段を連続的に校正することを特徴とする請求項1記載の方法。
- 前記放射体として黒体を使用することを特徴とする請求項1記載の方法。
- 前記エネルギー照射ステップにおいてレーザー・ビームを使用することを特徴とする請求項1記載の方法。
- 二酸化炭素レーザーを用いて前記レーザー・ビームを発生させることを特徴とする請求項8記載の方法。
- 前記拡散機構としてローラーまたはワイパー・ブレードを使用することを特徴とする請求項1記載の方法。
- 前記ローラーとして逆転ローラーを使用することを特徴とする請求項10記載の方法。
- コンピュータおよび校正カーブを用いて前記検出温度を調整することを特徴とする請求項7記載の方法。
- 成形プロセスによって粉体から部品を成形するための装置であって、
(a)第1の側および該第1の側に対向する第2の側を備え、加成プロセスが実行される標的領域を有して成るチャンバー、
(b)前記標的領域における粉体層の選択領域を熔解する熔解手段、
(c)前記粉体を前記チャンバーに供給する粉体供給手段、
(d)前記粉体を前記標的領域に拡散する拡散手段、
(e)前記処理チャンバー内の前記粉体に熱エネルギーを供給する加熱手段、
(f)前記処理チャンバー内の前記粉体の温度を検出し、前記加熱手段を調整するための測定値を送信するセンサー手段、
(g)所望の温度に対応する所望の放射エネルギーに設定され、所望レベルの放射エネルギーを放射する放射エネルギー放射手段、および
(h)前記放射エネルギーを検出温度と比較することにより、前記センサー手段の検出温度を調整し前記粉体の温度を正確に反映すると共に、前記加熱手段にデータを送信し該加熱手段によって供給される前記熱エネルギーを調整する校正手段
の各手段を組み合わせて成り、
前記放射エネルギー放射手段が前記粉体を拡散する拡散手段に取り付けられていることを特徴とする装置。 - 前記拡散手段がローラー、および前記標的領域を横断して該ローラーを移動させることにより前記粉体を層状に平坦化する、該ローラーに接続されているモータを有して成ることを特徴とする請求項13記載の装置。
- 熱エネルギーを前記粉体に供給するための前記加熱手段が少なくとも1つの放射放熱器を有して成ることを特徴とする請求項14記載の装置。
- 前記標的領域における前記粉体層の選択領域を熔解する手段が、
(a)エネルギー・ビーム、
(b)前記エネルギー・ビームを誘導する光学ミラー・システム、および
(c)成形予定部品の複数の断面の所望の境界を示す情報がプログラムされているコンピュータを含み、前記光学ミラー・システムに接続されているエネルギー・ビーム制御手段
を有して成ることを特徴とする請求項14記載の装置。 - 前記エネルギー・ビームがレーザー・エネルギー・ビームであることを特徴とする請求項16記載の装置。
- 前記少なくとも1つの放射放熱器がIR放熱器であることを特徴とする請求項15記載の装置。
- 前記拡散手段がワイパー・ブレード、および前記標的領域を横断して該ワイパー・ブレードを移動させることにより前記粉体を拡散する、該ワイパー・ブレードに接続されているモータを有して成ることを特徴とする請求項13記載の装置。
- 前記放射エネルギー放射手段が黒体であることを特徴とする請求項13記載の装置。
- 前記センサー手段が非接触型温度センサーであることを特徴とする請求項13記載の装置。
- 前記センサー手段がIRセンサーであることを特徴とする請求項13記載の装置。
- 前記センサー手段が前記処理チャンバー内に複数のセンサーを有して成ることを特徴とする請求項13記載の装置。
- 前記校正手段が校正カーブを用いて前記測定値を調整するコンピュータ制御装置であることを特徴とする請求項13記載の装置。
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Publication number | Priority date | Publication date | Assignee | Title |
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KR101872935B1 (ko) * | 2017-01-12 | 2018-07-02 | 윈포시스(주) | 3d 프린팅 가공 검사용 장치 |
US10953604B2 (en) | 2017-03-03 | 2021-03-23 | Concept Laser Gmbh | System and method for additive production of three-dimensional objects with graphical display |
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DE102005026884A1 (de) | 2006-03-23 |
EP1634694A3 (en) | 2006-03-22 |
EP1634694A2 (en) | 2006-03-15 |
EP1634694B1 (en) | 2009-12-02 |
DE602005017989D1 (de) | 2010-01-14 |
DE102005026884B4 (de) | 2006-12-21 |
US6930278B1 (en) | 2005-08-16 |
JP2006053127A (ja) | 2006-02-23 |
ATE450360T1 (de) | 2009-12-15 |
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