JP7567460B2 - 製品の製造方法 - Google Patents
製品の製造方法 Download PDFInfo
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- JP7567460B2 JP7567460B2 JP2020216427A JP2020216427A JP7567460B2 JP 7567460 B2 JP7567460 B2 JP 7567460B2 JP 2020216427 A JP2020216427 A JP 2020216427A JP 2020216427 A JP2020216427 A JP 2020216427A JP 7567460 B2 JP7567460 B2 JP 7567460B2
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- inorganic powder
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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Description
図1は、第1実施形態における製造システム5の概略構成を示す図である。製造システム5は、三次元造形装置100と、射出成形機200と、脱脂装置300と、焼結炉400とを備える。図1に示したX,Y,Z方向は、図2以降に示したX,Y,Z方向に対応している。
第2実施形態では、製造システム5の構成、および、製品の製造方法の一連の工程は、第1実施形態と同じである。第1実施形態では、第1部品P1の第1領域A1の造形に用いる第1材料と、第2領域A2の造形に用いる第2材料とで、異なる融点を有するバインダーを用いている。これに対して、第2実施形態では、第1部品P1の第1領域A1の造形に用いる第1材料の無機粉末の粒径を、第2領域A2の造形に用いる第2材料の無機粉末の粒径に比べて小さくする。本実施形態において、粒径とは中心粒径を意味する。
第3実施形態では、製造システム5の構成、および、製品の製造方法の一連の工程は、第1実施形態と同じである。
図9は、第4実施形態における製造システム5dの概略構成を示す図である。製造システム5dは、第1の三次元造形装置101と、第2の三次元造形装置102と、脱脂装置300と、焼結炉400とを備える。つまり、第4実施形態では、射出成形機200の代わりに、第2の三次元造形装置102が製造システム5dに備えられている。第1の三次元造形装置101および第2の三次元造形装置102の構成は、第1実施形態における三次元造形装置100の構成と同じである。第1の三次元造形装置101および第2の三次元造形装置102には、それぞれ、ホッパー20と可塑化部30とノズル60とが備えられている。第4実施形態において製品の製造に用いる材料は、第1~3実施形態において説明したいずれの材料も採用可能である。
図11は、第5実施形態における製造システム5eの概略構成を示す図である。製造システム5eは、三次元造形装置100と、脱脂装置300と、焼結炉400とを備える。つまり、第5実施形態の製造システム5eは、三次元造形装置100を1台のみ備えており、射出成形機200を備えていない。
本開示は、上述の実施形態に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現することができる。例えば、以下に記載する各形態中の技術的特徴に対応する実施形態の技術的特徴は、上述の課題の一部又は全部を解決するために、あるいは、上述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことが可能である。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除することが可能である。
このような形態であれば、三次元造形装置によって、第1部品の第2部品との接合領域に、融点の低いバインダーを有する材料を配置することができる。そのため、第4工程において第1部品と第2部品とを加熱して脱脂する際に、接合領域において第1部品のバインダー成分が溶融し、第1部品と第2部品との間に隙間が生じることを抑制できる。この結果、簡易な手法で複数の部品を良好に接合して製品を製造することができる。
このような形態であれば、三次元造形装置によって、第1部品の第2部品との接合領域に、粒径の小さい無機粉末を有する材料を配置することができる。そのため、第5工程において第1部品と第2部品とを焼結する際に、接合領域において早く焼結が開始され、これらを良好に接合することができる。この結果、簡易な手法で複数の部品を良好に接合して製品を製造することができる。
Claims (8)
- 無機粉末とバインダーとを含む第1部品と、無機粉末とバインダーとを含む第2部品と
を接合して製品を製造する製造方法であって、
三次元造形装置により前記第1部品を生成する第1工程と、
前記第2部品を生成する第2工程と、
前記第1部品と前記第2部品とを組み立てて組立体を得る第3工程と、
前記組立体を第1温度で加熱する第4工程と、
前記第4工程の後に、前記組立体を前記第1温度より高い第2温度で加熱して焼結する
第5工程と、
を備え、
前記第1部品は、前記第2部品と接触する第1領域と、前記第2部品と接触しない第2
領域とを有し、
前記第1領域に含まれるバインダーの融点は、前記第2領域に含まれるバインダーの融
点に比べて低い、製造方法。 - 無機粉末とバインダーとを含む第1部品と、無機粉末とバインダーとを含む第2部品と
を接合して製品を製造する製造方法であって、
三次元造形装置により前記第1部品を生成する第1工程と、
前記第2部品を生成する第2工程と、
前記第1部品と前記第2部品とを組み立てて組立体を得る第3工程と、
前記組立体を第1温度で加熱する第4工程と、
前記第4工程の後に、前記組立体を前記第1温度より高い第2温度で加熱して焼結する
第5工程と、
を備え、
前記第1部品は、前記第2部品と接触する第1領域と、前記第2部品と接触しない第2
領域を有し、
前記第1領域に含まれる無機粉末の粒径は、前記第2領域に含まれる無機粉末の粒径に
比べて小さい、製造方法。 - 請求項1または2に記載の製造方法であって、
前記第2工程において、前記第2部品を射出成形機により生成する、製造方法。 - 請求項1から3までのいずれか一項に記載の製造方法であって、
前記第2工程において、前記第2部品を三次元造形装置により生成する、製造方法。 - 請求項4に記載の製造方法であって、
前記第1工程において用いられる前記三次元造形装置、および、前記第2工程において
用いられる前記三次元造形装置は、それぞれ、ペレット状の材料が投入されるホッパーと
、前記材料を可塑化する可塑化部と、可塑化された前記材料を吐出するノズルと、を備え
る、製造方法。 - 請求項5に記載の製造方法であって、
前記第1工程において用いられる前記三次元造形装置、および、前記第2工程において
用いられる前記三次元造形装置は同じ三次元造形装置であり、
前記第1部品と前記第2部品とは、前記三次元造形装置に備えられた同じステージ上で
並行して生成される、製造方法。 - 請求項1から6までのいずれか一項に記載の製造方法であって、
前記第4工程よりも前において、前記第1領域における前記無機粉末の粒子密度は、前
記第2領域における前記無機粉末の粒子密度に比べて高い、製造方法。 - 請求項1から7までのいずれか一項に記載の製造方法であって、
前記第1領域に含まれる前記無機粉末は、前記第2領域に含まれる前記無機粉末と同じ
元素を主成分として含む、製造方法。
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