JP4770838B2 - 三次元形状造形物の製造方法 - Google Patents
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- B22F12/22—Driving means
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- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
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- B22—CASTING; POWDER METALLURGY
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- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
a)粉末材料でできた均一の厚さを有する粉末層を形成し、
b)上記粉末層の選択された部分へ光ビームを照射してこれを焼結または溶融させて硬化 層を形成し、
c)上記硬化層の上に追加の粉末層を形成し、
d)上記追加の粉末層の選択された部分へ上記光ビームを照射して上記の硬化層と一体化 した追加の硬化層を形成し、
e)上記のステップc)、d)を繰り返して上記の硬化層を積層させることで三次元形状 造形物を製造する。
各硬化層を形成するに際しては、少なくとも一つの粉末層について、造形物の外殻を形成する輪郭領域へ光ビームを一次照射して高密度で焼結または溶融された一次高密度硬化層を形成し、硬化により厚さが小さくなった一次硬化層の上に新たに粉末を供給して、均一な厚さの補完粉末層を形成し、
上記補完粉末層に光ビームを二次照射して少なくとも一部を高密度で焼結または溶融させて上記一次硬化層と一体となった二次高密度硬化層を形成する。上記輪郭領域に包囲され且つ一次硬化層を形成しない部分の粉末層については、光ビームを照射してこの部分を低密度で焼結または溶融させて低密度硬化層を形成する。このように、高密度硬化層を2回に分けて形成することにより、造形物の外殻を規定する高密度硬化層の高さを、外殻の内側部分を規定する低密度硬化層の高さに揃え、高密度硬化層と低密度硬化層とを含む各硬化層の高さを一定にすることができることになり、設計通りの精密な形状の造形物を製造することができる。
Claims (6)
- a)粉末材料でできた均一の厚さを有する粉末層を形成し、
b)上記粉末層の選択された部分へ光ビームを照射してこれを焼結または溶融させて硬化 層を形成し、
c)上記硬化層の上に追加の粉末層を形成し、
d)上記追加の粉末層の選択された部分へ上記光ビームを照射して上記の硬化層と一体化 した追加の硬化層を形成し、
e)上記のステップc)、d)を繰り返して上記の硬化層を積層させて三次元形状造形物 を製造する方法であって、
少なくとも一つの粉末層について、造形物の外殻を形成する輪郭領域へ光ビームを一次照射して高密度で硬化された一次高密度硬化層を形成し、
硬化により厚さが小さくなった一次硬化層の上に新たに粉末を供給して、均一な厚さの補完粉末層を形成し、
上記補完粉末層に光ビームを二次照射して少なくとも一部を高密度で焼結または溶融させて上記一次硬化層と一体となった二次高密度硬化層を形成し、
上記輪郭領域に包囲され且つ一次硬化層を形成しない部分の粉末層に光ビームを照射してこの部分を低密度で焼結または溶融させて低密度硬化層を形成することを特徴とする三次元形状造形物の製造方法。 - 上記補完粉末層の内、次に積層される硬化層と重複しない部分にのみ光ビームを二次照射してこの部分に上記の二次高密度硬化層を形成し、次に積層される硬化層と重複する部分の上記補完粉末層は、次に積層される硬化層を形成するためにこの補完粉末層の上へ供給される粉末層と共に、光ビームの一次照射によって次に積層される硬化層における一次高密度硬化層に合体させることを特徴とする請求項1に記載の三次元形状造形物の製造方法。
- 上下に移動する昇降ステージを使用してこの上に硬化層を保持し、上記の昇降ステージを一段ずつ下降させて上記硬化層の上に粉末材料を供給することで、硬化層の上に均一な厚みの粉末層を形成し、
昇降ステージを定位置に保持した状態で、粉末材料を一次硬化層の上に供給して、上記輪郭領域に囲まれた未焼結または未溶融の粉末層と表面が同一レベルとなった上記の補完粉末層を形成することを特徴とする請求項1に記載の三次元形状造形物の製造方法。 - 上記一次照射での光ビームのスキャン方向と上記二次照射での光ビームのスキャン方向とを交差させることを特徴とする請求項1または2に記載の三次元形状造形物の製造方法。
- 上記一次照射方式での光ビームの照射エネルギー及び上記二次照射方式での光ビームの照射エネルギーは、焼結またはあ溶融される粉末の単位体積・単位時間当たりで一定であることを特徴とする請求項1または2に記載の三次元形状造形物の製造方法。
- 次に積層される硬化層と重複しない部分を含む硬化層を形成するに際して、上記の一次高密度硬化層と、この上に形成する上記の二次高密度硬化層とが互いに異なる照射範囲に亘る光ビームの照射によって形成し、それぞれの照射範囲を、粉末層の厚さから一次硬化層の厚さを減じた沈降量に基づいて決定することを特徴とする請求項1または2に記載の三次元形状造形物の製造方法。
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| PCT/JP2006/322629 WO2007058160A1 (ja) | 2005-11-15 | 2006-11-14 | 三次元形状造形物の製造方法 |
| JP2007545235A JP4770838B2 (ja) | 2005-11-15 | 2006-11-14 | 三次元形状造形物の製造方法 |
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| EP (1) | EP1949989B1 (ja) |
| JP (1) | JP4770838B2 (ja) |
| KR (1) | KR100993923B1 (ja) |
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| WO2015108556A1 (en) * | 2014-01-16 | 2015-07-23 | Hewlett-Packard Development Company, L.P. | Generating three-dimensional objects |
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| WO2019113949A1 (zh) * | 2017-12-15 | 2019-06-20 | 吴江中瑞机电科技有限公司 | 光固化激光扫描系统和方法 |
| FR3080306B1 (fr) * | 2018-04-19 | 2021-02-19 | Michelin & Cie | Procede de fabrication additive d'une piece metallique en trois dimensions |
| EP3569351B1 (en) * | 2018-05-14 | 2025-07-09 | AB Sandvik Coromant | Veined tool blank |
| JP6956044B2 (ja) * | 2018-06-04 | 2021-10-27 | 株式会社日立製作所 | 粉末積層造形物およびその製造方法 |
| JP7056411B2 (ja) * | 2018-06-29 | 2022-04-19 | 株式会社リコー | 読取装置および造形装置 |
| CN110126266A (zh) * | 2019-04-17 | 2019-08-16 | 湖南华曙高科技有限责任公司 | 一种三维物体制造方法 |
| EP3812131B1 (de) | 2019-10-23 | 2022-04-13 | Ivoclar Vivadent AG | Stereolithographieverfahren |
| CN113665101A (zh) * | 2021-10-21 | 2021-11-19 | 广东职业技术学院 | 一种fdm打印方法及fdm打印机 |
| EP4512547A1 (en) * | 2023-08-24 | 2025-02-26 | Renishaw PLC | Powder bed fusion apparatus and methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988002677A2 (en) | 1986-10-17 | 1988-04-21 | Board Of Regents, The University Of Texas System | Method and apparatus for producing parts by selective sintering |
| JPH11347761A (ja) | 1998-06-12 | 1999-12-21 | Mitsubishi Heavy Ind Ltd | レーザによる3次元造形装置 |
| JP3943315B2 (ja) | 2000-07-24 | 2007-07-11 | 松下電工株式会社 | 三次元形状造形物の製造方法 |
| TW506868B (en) * | 2000-10-05 | 2002-10-21 | Matsushita Electric Works Ltd | Method of and apparatus for making a three-dimensional object |
| JP3446733B2 (ja) * | 2000-10-05 | 2003-09-16 | 松下電工株式会社 | 三次元形状造形物の製造方法及びその装置 |
| DE10208150B4 (de) * | 2001-02-26 | 2009-12-17 | Matthias Dr. Fockele | Verfahren und Vorrichtung zur Herstellung eines Formkörpers |
| DE10344901B4 (de) * | 2002-09-30 | 2006-09-07 | Matsushita Electric Works, Ltd., Kadoma | Verfahren zum Herstellen eines dreidimensionalen gesinterten Produkts |
| ATE316835T1 (de) | 2002-11-07 | 2006-02-15 | Concept Laser Gmbh | Verfahren zur herstellung eines formkörpers durch metallpulverschmelzverfahren |
| SE524421C2 (sv) | 2002-12-19 | 2004-08-10 | Arcam Ab | Anordning samt metod för framställande av en tredimensionell produkt |
| DE102004009127A1 (de) | 2004-02-25 | 2005-09-15 | Bego Medical Ag | Verfahren und Vorrichtung zum Herstellen von Produkten durch Sintern und/oder Schmelzen |
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- 2006-11-14 CN CN200680042372.4A patent/CN101309766B/zh not_active Expired - Fee Related
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- 2006-11-14 WO PCT/JP2006/322629 patent/WO2007058160A1/ja not_active Ceased
- 2006-11-14 KR KR1020087013379A patent/KR100993923B1/ko not_active Expired - Fee Related
- 2006-11-14 EP EP06832591A patent/EP1949989B1/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011256435A (ja) * | 2010-06-09 | 2011-12-22 | Panasonic Electric Works Co Ltd | 三次元形状造形物の製造方法、得られる三次元形状造形物および成形品の製造方法 |
| WO2015108556A1 (en) * | 2014-01-16 | 2015-07-23 | Hewlett-Packard Development Company, L.P. | Generating three-dimensional objects |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090121393A1 (en) | 2009-05-14 |
| KR20080066072A (ko) | 2008-07-15 |
| CN101309766B (zh) | 2014-10-08 |
| US8057731B2 (en) | 2011-11-15 |
| EP1949989B1 (en) | 2012-01-11 |
| WO2007058160A1 (ja) | 2007-05-24 |
| CN101309766A (zh) | 2008-11-19 |
| JPWO2007058160A1 (ja) | 2009-04-30 |
| EP1949989A1 (en) | 2008-07-30 |
| KR100993923B1 (ko) | 2010-11-11 |
| EP1949989A4 (en) | 2009-12-30 |
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