JP2020138342A - 三次元造形物の造形方法 - Google Patents
三次元造形物の造形方法 Download PDFInfo
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- JP2020138342A JP2020138342A JP2019033677A JP2019033677A JP2020138342A JP 2020138342 A JP2020138342 A JP 2020138342A JP 2019033677 A JP2019033677 A JP 2019033677A JP 2019033677 A JP2019033677 A JP 2019033677A JP 2020138342 A JP2020138342 A JP 2020138342A
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Abstract
【解決手段】予め定められた切削方向に最大で第1長さ切削可能な切削工具を用いる三次元造形物の造形方法は、造形材料を積層することによって、第1方向に沿った長さが第1長さよりも短い第1部分を造形する第1部分造形工程と、切削方向を第1方向に沿わせた切削工具によって、第1部分を切削する第1部分切削工程と、造形材料を積層することによって、第1部分の第1方向における第1端面に接続し、第2方向に沿った長さが第1長さよりも短い第2部分を造形する第2部分造形工程と、切削方向を第2方向に沿わせた切削工具によって、第2部分を第2方向に沿って切削する第2部分切削工程とを有する。
【選択図】図8
Description
図1は、第1実施形態における三次元造形装置10の概略構成を示す説明図である。図1には、互いに直交するX,Y,Z方向に沿った矢印が表されている。X方向およびY方向は、水平方向に沿った方向であり、Z方向は、鉛直方向に沿った方向である。他の図においても、X,Y,Z方向に沿った矢印が、適宜、表されている。図1におけるX,Y,Z方向と、他の図におけるX,Y,Z方向とは、同じ方向を表している。
<熱可塑性樹脂材料の例>
ポリプロピレン樹脂(PP)、ポリエチレン樹脂(PE)、ポリアセタール樹脂(POM)、ポリ塩化ビニル樹脂(PVC)、ポリアミド樹脂(PA)、アクリロニトリル・ブタジエン・スチレン樹脂(ABS)、ポリ乳酸樹脂(PLA)、ポリフェニレンサルファイド樹脂(PPS)、ポリカーボネート(PC)、変性ポリフェニレンエーテル、ポリブチレンテレフタレート、ポリエチレンテレフタレートなどの汎用エンジニアリングプラスチック、ポリサルフォン、ポリエーテルサルフォン、ポリフェニレンサルファイド、ポリアリレート、ポリイミド、ポリアミドイミド、ポリエーテルイミド、ポリエーテルエーテルケトン(PEEK)などのエンジニアリングプラスチック。
<金属材料の例>
マグネシウム(Mg)、鉄(Fe)、コバルト(Co)やクロム(Cr)、アルミニウム(Al)、チタン(Ti)、銅(Cu)、ニッケル(Ni)の単一の金属、もしくはこれらの金属を1つ以上含む合金。
<合金の例>
マルエージング鋼、ステンレス、コバルトクロムモリブデン、チタニウム合金、ニッケル合金、アルミニウム合金、コバルト合金、コバルトクロム合金。
<溶剤の例>
水;エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、プロピレングリコールモノメチルエーテル、プロピレングリコールモノエチルエーテル等の(ポリ)アルキレングリコールモノアルキルエーテル類;酢酸エチル、酢酸n−プロピル、酢酸iso−プロピル、酢酸n−ブチル、酢酸iso−ブチル等の酢酸エステル類;ベンゼン、トルエン、キシレン等の芳香族炭化水素類;メチルエチルケトン、アセトン、メチルイソブチルケトン、エチル−n−ブチルケトン、ジイソプロピルケトン、アセチルアセトン等のケトン類;エタノール、プロパノール、ブタノール等のアルコール類;テトラアルキルアンモニウムアセテート類;ジメチルスルホキシド、ジエチルスルホキシド等のスルホキシド系溶剤;ピリジン、γ−ピコリン、2,6−ルチジン等のピリジン系溶剤;テトラアルキルアンモニウムアセテート(例えば、テトラブチルアンモニウムアセテート等);ブチルカルビトールアセテート等のイオン液体等。
<バインダーの例>
アクリル樹脂、エポキシ樹脂、シリコーン樹脂、セルロース系樹脂或いはその他の合成樹脂又はPLA(ポリ乳酸)、PA(ポリアミド)、PPS(ポリフェニレンサルファイド)、PEEK(ポリエーテルエーテルケトン)或いはその他の熱可塑性樹脂。
(B1)上述した各実施形態では、第1加熱工程にて、制御部500は、再加熱部70を用いて、第1部分910の第1端面911を加熱し、第2加熱工程にて、制御部500は、再加熱部70を用いて、第2部分920の第2端面921を加熱する。これに対して、第1加熱工程と第2加熱工程とが行われなくてもよい。
本開示は、上述した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形態で実現することができる。例えば、本開示は、以下の形態によっても実現可能である。以下に記載した各形態中の技術的特徴に対応する上記実施形態中の技術的特徴は、本開示の課題の一部又は全部を解決するために、あるいは、本開示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。
この形態の三次元造形物の造形方法によれば、一度に造形材料を積層した後に切削加工を施した場合には、切削工具が届かずに削り代が残る部分が生じる三次元造形物を、削り代を残さずに所望の形状で作成できる。そのため、造形材料の積層と切削加工とによって作成可能な三次元造形物の形状の自由度を向上させることができる。
この形態の三次元造形物の造形方法によれば、削り代が第1方向に沿って設けられた三次元造形物を、所望の形状で作成できる。
この形態の三次元造形物の造形方法によれば、一方向から切削加工を施すだけでは切削工具が届かずに削り代が残る部分が生じる三次元造形物を、所望の形状で作成できる。
この形態の三次元造形物の造形方法によれば、長尺な形状を有するために、切削工具が届かずに削り代が残る部分が生じる三次元造形物を、所望の形状で作成できる。
この形態の三次元造形物の造形方法によれば、第1部分に接続する第2部分を造形する際に、ノズルと第1部分とが干渉することを抑制できる。
この形態の三次元造形物の造形方法によれば、第1部分と第2部分との密着性を向上させることができるので、三次元造形物の機械的強度を向上させることができる。
この形態の三次元造形物の造形方法によれば、第1部分に切削加工を施す際に、切削に用いられる装置とステージとが干渉することを抑制できる。
Claims (7)
- 予め定められた切削方向に最大で第1長さ切削可能な切削工具を用いる三次元造形物の造形方法であって、
造形材料を積層することによって、第1方向に沿った長さが前記第1長さよりも短い第1部分を造形する第1部分造形工程と、
前記切削方向を前記第1方向に沿わせた前記切削工具によって、前記第1部分を切削する第1部分切削工程と、
前記造形材料を積層することによって、前記第1部分の前記第1方向における第1端面に接続し、第2方向に沿った長さが前記第1長さよりも短い第2部分を造形する第2部分造形工程と、
前記切削方向を前記第2方向に沿わせた前記切削工具によって、前記第2部分を前記第2方向に沿って切削する第2部分切削工程と、
を有する三次元造形物の造形方法。 - 請求項1に記載の三次元造形物の造形方法であって、
前記第1方向と前記第2方向とが同じ方向である、三次元造形物の造形方法。 - 請求項1に記載の三次元造形物の造形方法であって、
前記第1方向と前記第2方向とが異なる方向である、三次元造形物の造形方法。 - 請求項1から請求項3のいずれか一項に記載の三次元造形物の造形方法であって、
前記第1方向における前記第1部分と前記第2部分とを合わせた長さと、前記第2方向における前記第1部分と前記第2部分とを合わせた長さとの少なくともいずれか一方は、前記第1長さよりも長い、三次元造形物の造形方法。 - 請求項1から請求項4のいずれか一項に記載の三次元造形物の造形方法であって、
前記第1部分における前記第1端面の、前記造形材料が積層されるステージに対する傾斜角は、前記造形材料を吐出するノズルにおける側面の、前記ステージに対する傾斜角よりも小さい、三次元造形物の造形方法。 - 請求項1から請求項5のいずれか一項に記載の三次元造形物の造形方法であって、
前記第1部分の前記第1端面を、前記第2部分造形工程に先立って加熱する加熱工程を有する、三次元造形物の造形方法。 - 請求項1から請求項6のいずれか一項に記載の三次元造形物の造形方法であって、
前記第1部分は、ステージに接して造形され、前記第1部分における前記第1部分切削工程にて切削される削り代と前記ステージとの距離を確保するための嵩上部を有する、三次元造形物の造形方法。
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