JP2013506580A - 押し出し式デジタル製造システムにて使用する非円筒形フィラメント - Google Patents
押し出し式デジタル製造システムにて使用する非円筒形フィラメント Download PDFInfo
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- JP2013506580A JP2013506580A JP2012532132A JP2012532132A JP2013506580A JP 2013506580 A JP2013506580 A JP 2013506580A JP 2012532132 A JP2012532132 A JP 2012532132A JP 2012532132 A JP2012532132 A JP 2012532132A JP 2013506580 A JP2013506580 A JP 2013506580A
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- cylindrical
- cross
- filament
- consumable material
- sheet
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Abstract
Description
本開示は、3次元(3D)モデルを構築するための直接デジタル製造システムに関する。特に、本発明は、押し出し式デジタル製造システムにて使用するモデリングおよび支持材料などの消耗材料に関する。
(概要)
本開示の第1の態様は、押し出し式デジタル製造システムにて使用する消耗材料に関する。消耗材料は、長さと、軸方向に非対称である長さの少なくとも一部の断面プロファイルを含む。断面プロファイルは、押し出し式デジタル製造システムの非円筒形液化装置を用いた場合、同一の熱的に制限された最大体積流量で円筒形液化装置における円筒形フィラメントを用いて達成可能な応答時間より速い(例えば、少なくとも50%速い)応答時間を提供するように構成される。
本開示は、押し出し式デジタル製造システムにて使用するモデリングおよび支持材料の非円筒形フィラメント、並びに非円筒形フィラメントを製造するための方法およびシステムに関する。以下に説明するように、非円筒形フィラメントは、同一の体積流量を有する円筒形液化装置から融解して押し出される円筒形フィラメントと比較して、減少した応答時間で非円筒形液化装置から融解して押し出され得る消耗材料である。このことは、堆積精度を向上させ且つ構築時間を低減し、そのことにより3Dモデルおよび対応する支持構造体を構築するプロセス効率を増加させるのに有利である。
(等式1)
(等式2)
(等式3)
円筒形液化装置の流動抵抗と流量キャパシタンスを組み合わせることにより、円筒形液化装置の応答時間は、集中した圧力変化時定数τcに基づいて、等式4により決定してもよい。
(等式4)
(等式5)
(等式6)
(等式7)
(等式8)
(等式9)
(等式10)
(等式11)
(等式12)
(等式13)
(等式14)
(等式15)
(等式16)
(等式17)
円筒形液化装置の場合、等式17はDh=Dcに約分される。通路52が融解した材料で実質的に満たされる液化装置48などの矩形の液化装置の場合、Ae=WrTr、およびU=2(Wr+Tr)であり、水力直径Dhは等式18で表されてもよい。
(等式18)
(等式19)
(等式20)
Claims (20)
- 押し出し式デジタル製造システムにて使用する消耗材料であって、前記消耗材料は、長さと、軸方向に非対称である前記長さの少なくとも一部の断面プロファイルを含み、前記断面プロファイルは、前記押し出し式デジタル製造システムの非円筒形液化装置とともに、同一の熱的に制限された最大体積流量の円筒形液化装置での円筒形フィラメントで達成可能な応答時間より少なくとも50%速い応答時間を提供するように構成されることを特徴とする消耗材料。
- 前記非円筒形液化装置での前記消耗材料の前記応答時間は、前記円筒形液化装置での前記円筒形フィラメントの前記応答時間より、少なくとも約2倍速いことを特徴とする、請求項1に記載の消耗材料。
- 前記非円筒形液化装置での前記消耗材料の前記応答時間は、前記円筒形液化装置での前記円筒形フィラメントの前記応答時間より、少なくとも約3倍速いことを特徴とする、請求項2に記載の消耗材料。
- 前記断面プロファイルは、矩形の幾何学的形状を含むことを特徴とする、請求項1に記載の消耗材料。
- 前記断面プロファイルは、約2:1以上の幅対厚さの断面アスペクト比を有することを特徴とする、請求項4に記載の消耗材料。
- 前記断面アスペクト比は約2.5:1〜約20:1であることを特徴とする、請求項5に記載の消耗材料。
- 前記断面プロファイルの前記幅は、約1.0ミリメートル〜約10.2ミリメートルであることを特徴とする、請求項5に記載の消耗材料。
- 前記消耗材料は組成的に、熱可塑性材料、非晶質金属合金、およびこれらの組み合わせからなる群から選択される少なくとも1つの材料を含むことを特徴とする、請求項1に記載の消耗材料。
- 押し出し式デジタル製造システムにて使用する消耗材料であって、前記消耗材料は、
非晶性を有する少なくとも1つの材料を含む組成物と、
非円筒形幾何学的形状を含み、前記非円筒形幾何学的形状は、
長さと、
前記長さの少なくとも一部の断面プロファイルを含み、前記断面プロファイルは、Dh<0.95√Aeである入口断面積Aeと水力直径Dhを有する前記押し出し式デジタル製造システムの非円筒形液化装置と嵌合するように構成されることを特徴とする、消耗材料。 - Dh<0.90√Aeであることを特徴とする、請求項9に記載の消耗材料。
- Dh<0.40√Aeであることを特徴とする、請求項9に記載の消耗材料。
- 前記断面プロファイルは、幅と厚さを有する矩形の幾何学的形状を含み、前記幅は前記厚さよりも大きいことを特徴とする、請求項9に記載の消耗材料。
- 前記断面プロファイルの前記幅は、約1.0ミリメートル〜約10.2ミリメートルであることを特徴とする、請求項12に記載の消耗材料。
- 前記少なくとも1つの材料は、熱可塑性材料、非晶質金属合金、およびこれらの組み合わせからなる群から選択されることを特徴とする、請求項9に記載の消耗材料。
- 押し出し式デジタル製造システムにて使用する消耗材料の製造方法であって、
シート厚さと、少なくとも1つの熱可塑性材料を有する組成物とを有する押し出しシートを提供する工程と、
前記押し出しシートを複数の非円筒形フィラメントに切断する工程であって、前記複数の非円筒形フィラメントの少なくとも1つは、長さと、前記長さの少なくとも一部の断面プロファイルを含むことを特徴とし、前記断面プロファイルは、Dh<0.95で√Aeある入口断面積Aeと水力直径Dhを有する前記押し出し式デジタル製造システムの非円筒形液化装置と嵌合するように構成されていることを特徴とする工程と、
前記複数の非円筒形フィラメントの少なくとも一部を供給アセンブリに実質的に平行して装填する工程と、
を含む方法。 - Dh<0.90√Aeであることを特徴とする、請求項15に記載の方法。
- 前記断面プロファイルは、幅と厚さを有する矩形の幾何学的形状を含むことを特徴とし、前記断面プロファイルの前記厚さは、前記シート厚さと実質的に等しいことを特徴とする、請求項15に記載の方法。
- 前記断面プロファイルの前記幅は、約1.0ミリメートル〜約10.2ミリメートルであることを特徴とする、請求項17に記載の方法。
- 前記押し出しシートに少なくとも1つの組織分布的表面パターンを形成する工程を更に含む、請求項15に記載の方法。
- 前記押し出しシートを提供する工程は、
前記押し出しシートのベース部を押し出す工程と、
前記押し出しシートの前記ベース部上に少なくとも1つの層を形成する工程と、
を含むことを特徴とする、請求項15に記載の方法。
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