JP2015038237A - 積層造形物、粉末積層造形装置及び粉末積層造形方法 - Google Patents
積層造形物、粉末積層造形装置及び粉末積層造形方法 Download PDFInfo
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Abstract
【解決手段】粉末材料の薄層35aを形成する工程と、粉末材料の薄層35aの特定の領域に加熱用エネルギービームを照射することにより、昇温した予備加熱層35cを形成する工程と、昇温した予備加熱層35cの領域内の粉末材料の薄層に加熱用エネルギービームを照射し、粉末材料の薄層を溶融し固化して固化層35dを形成する工程とを有し、各工程を繰り返して積層造形物を作製する。
【選択図】図5
Description
図1は、本発明の実施形態に係る粉末積層造形装置の構成を示す図である。
図2は、本発明の実施形態に係る粉末積層造形装置のうち、レーザ光出射部102の構成を示す図である。
図3(a)は、薄層形成部103の構成を示す上面図である。図3(b)は、図3(a)のI-I線に沿う断面図で、同図には、薄層形成部101のほかに、その上方に配置されているレーザ光出射部102も示している。図3(a)、(b)ではチャンバを省略している。
使用可能な粉末材料35として、金属粉末材料やセラミックス粉末材料などが挙げられる。
制御部104は、レーザ光出射部102のコントローラと、薄層形成部103のコントローラとで構成される。
レーザ光出射部102のコントローラは、XYZドライバに制御信号を送り、次のような制御を行う。
薄層形成部103のコントローラは、パートテーブル33a、第1及び第2フィードテーブル34aa、34baの昇降と、リコータ36の移動とを制御するとともに、ヒータや加熱用光源その他の加熱手段による加熱を制御する。
次に、上記粉末積層造形装置を用いた粉末積層造形方法について説明する。
図9は、本発明の実施形態に係る第1変形例の粉末積層造形装置の構成を示す図である。
図3の粉末積層造形装置に適用し得る第2変形例の薄層形成部のコントローラについて、図10を参照してその制御方法を説明する。
(i)第3変形例の薄層形成部のコントローラ
図3の粉末積層造形装置に適用し得る第3変形例の薄層形成部のコントローラについて、図11(a)を参照してその制御方法を説明する。
図3の粉末積層造形装置に適用し得る第4変形例の薄層形成部のコントローラについて、図11(b)を参照してその制御方法を説明する。
Claims (9)
- 粉末材料の薄層を形成する昇降台と、
前記粉末材料の薄層を加熱する加熱用エネルギービームを出射する加熱用エネルギービーム出射手段と、
造形を制御する制御部とを有する粉末積層造形装置であって、
前記制御部は、
前記昇降台を制御して前記昇降台の上に粉末材料の薄層を形成させ、
前記粉末材料の薄層の特定領域に前記加熱用エネルギービームを照射することにより、昇温した予備加熱層を形成させ、
前記昇温した予備加熱層の形成領域内の前記粉末材料の薄層に前記加熱用エネルギービームを照射し、前記粉末材料の薄層を溶融し固化して固化層を形成させる
ことを特徴とする粉末積層造形装置。 - 前記制御部は、請求項1の前記粉末材料の薄層に前記予備加熱層を形成させる前に、前記予備加熱層の下方に、昇温した下地加熱層を形成させることを特徴とする請求項1に記載の粉末積層造形装置。
- 前記加熱用エネルギービーム出射手段は、予備加熱用エネルギービーム出射手段と固化加熱用エネルギービーム出射手段とを有することを特徴とする請求項1に記載の粉末積層造形装置。
- 前記粉末積層造形装置は、前記昇降台を収納し、減圧環境下で形成する減圧用容器を有することを特徴とする請求項1に記載の粉末積層造形装置。
- 前記粉末材料は、金属又はセラミックスであることを特徴とする請求項1に記載の粉末積層造形装置。
- 粉末材料の薄層を形成する工程と、
前記粉末材料の薄層の特定の領域に加熱用エネルギービームを照射することにより、昇温した予備加熱層を形成する工程と、
前記昇温した予備加熱層の領域内の前記粉末材料の薄層に前記加熱用エネルギービームを照射し、前記粉末材料の薄層を溶融し固化して固化層を形成する工程と
を有し、各前記工程を繰り返して積層造形物を作製することを特徴とする粉末積層造形方法。 - 最初に前記粉末材料の薄層に前記予備加熱層を形成する工程の前に、前記予備加熱層の下方に、前記加熱用エネルギービームを照射することにより昇温した下地加熱層を形成する工程を有することを特徴とする請求項6に記載の粉末積層造形方法。
- 前記粉末積層造形方法は、減圧環境下で行うことを特徴とする請求項6に記載の粉末積層造形方法。
- 固化した積層造形物の周囲が予備加熱層の一部で覆われていることを特徴とする積層造形物。
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DE102014208565.9A DE102014208565A1 (de) | 2013-08-19 | 2014-05-07 | Schnellprototypenbau-Modell, Pulver-Schnellprototypenbau-Vorrichtung und Pulver-Schnellprototypenbau-Verfahren |
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