CN108698060B - 通过粉末的喷射和熔融进行增材制造的装置 - Google Patents
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Abstract
本发明涉及一种喷嘴,其用于通过粉末的喷射/熔融并依照中空锥形射流来进行增材制造,其包括:‑一个外锥体(210),‑一个内锥体,‑以及一个中间锥体,粉末被喷射到外锥体(210)的内表面和中间锥体的外表面之间的锥形环形空间中,其中,外锥体包括两个部分(211,212),这两个部分通过可拆卸装置(213)沿所述锥体的轴线组装。
Description
技术领域
本发明涉及一种通过粉末的喷射和熔融进行增材制造的装置。本发明更具体地涉及一种用于喷射和通过激光熔融金属粉末的喷嘴,其用于实施被称为CLAD®(“Construction Laser Additive Directe”的首字母缩写,即“直接添加激光制造”)的方法。所述CLAD®方法是一种使用由堆积材料构成的粉末的喷射/熔融通过堆积进行的增材制造方法,堆积材料的熔融通过精确地处于所述粉末的堆积点的激光来实现。
背景技术
与现有技术相关的图1示出了该方法的一个实施例的示意图。用于粉末的喷射/熔融的喷嘴(100)由三个同心锥体构成,这三个同心锥体在它们的壁之间界定出的锥形环形空间也是同心的。激光(150)通过以所述锥体的轴线为中心的孔穿过内锥体(130)。在制造过程中,激光聚焦在点(191)上,并在该点处实现材料在部件(190)上的堆积(192)。粉末(160)被喷射入处于外锥体(110)的内表面和中间锥体(120)的外表面之间的锥形环形空间中,同时将气体吹入处于所述中间锥体(120)的内表面和内锥体(130)的外表面之间的锥形环形空间中。通过对锥体(110,120,130)彼此间进行定心以及调节参数使粉末沿中空锥形射流喷射,该中空锥形射流的顶点理想地与激光(150)的焦点(191)重合。材料堆积点(191)与外锥(110)的前端之间的距离(193)通常约为5mm。这种微小距离增加了锥体与部件或制造环境的组成部分(例如机器台或夹紧装置)之间的碰撞风险,特别是当增材制造的操作沿采用5个位移轴的轨迹实现时。在某些情况下,在外锥体(110)和中间锥体(120)之间的环形空间的出口处产生粉末堆积物并且改变粉末射流的形状,这会导致堆积条件恶化。在这些条件下需要更换外锥(110)。
根据现有技术的这些维修操作成本很高,原因在于这些维修操作需要更换整个外锥,作为一个精密部件,其通常用昂贵的材料制成,例如铜,即使仅该部件的端部被损坏,也需整个更换。此外,操作时间相对较长,导致在其整个持续时间内机器停止运转以及合格的技术人员被占用。
发明内容
本发明旨在解决现有技术的这些缺陷,并且为此涉及一种用于通过粉末的喷射/熔融并依照中空锥形射流进行增材制造的喷嘴,其包括:
- 一个外锥体,
- 一个内锥体
- 以及一个中间锥体,
粉末被喷射到处于外锥体的内表面和中间锥体的外表面之间的锥形环形空间中,其中,外锥体包括两个部分,这两个部分通过可拆卸装置沿所述锥体的轴线组装。
因此,第一锥体的第二部分是可相互替换的并且在第一锥体损坏的情况下容易更换。
有利地,本发明根据以下描述的实施例和变型例来实现,这些实施例和变型例将被单独考虑或以任何技术上可操作的组合被考虑。
根据一个有利的实施方式,外锥体包括一个环,其具有一个内部锥形孔和一个与所述锥形孔同轴的外部定心部,外锥体的第二部分以所述定心部为中心。该实施方式确保了在无需调节的情况下,外锥体的第二部分相对于所述锥体的第一部分的理想定心。
根据作为本发明主体的喷嘴的一个实施方式,外锥体的第一部分和第二部分由不同的材料制成。因此,优化材料以满足这两个部分的主要功能。
根据一个特定的实施方式,外锥体的第二部分的内部锥形孔的锥度与第一部分的锥形孔的锥度不同。该实施方式能够改变射流的形状,特别是射流相对于喷嘴端部的焦距。
有利地,外锥体的第二部分包括一个可熔部分,其能够在一个确定的力的作用下断裂或变形。因此,在与部件碰撞的情况下,确定该力以使得正在制造的部件不被损坏。可替代地,可熔部分的尺寸设计为满足在可熔部分的变形对中间锥体造成损坏之前断裂。
有利地,作为本发明主体的喷嘴包括用于检测外锥体的可熔部分的断裂的检测装置。因此,在严重碰撞的情况下,检测锥体的断裂并且中断增材制造,以避免不可修复地降低所制造的部件的质量。
附图说明
以下根据其非限制性优选实施例并参照附图1和2来解释本发明,其中附图1和2的说明如下:
- 图1与现有技术有关,以透视和剖视原理的视图示出了在CLAD®法中使用的三个锥体;
- 图2以正视以及和图1相同的剖视的视图示出了作为本发明主体的喷射喷嘴的外锥体的一个实施例。
具体实施方式
图2,根据一个实施例,作为本发明主体的喷嘴的外锥体(210)由两部分(211,212)构成。根据该实施例,外锥体(210)的第一部分(211)由能够承受在增材制造过程中喷射的粉末的磨损作用的钢制成。该第一部分呈现为环的形式,其包括根据一个第一锥度的锥形孔(221),并且以定心部(231)结束。根据该实施例,定心部(231)为圆柱形公部。可替代地,该定心部由第一部分(211)的端部处的圆柱形或圆锥形的沉孔构成。第一锥体的第二部分(212)包括能够与第一部分的定心部(231)相匹配的定心部分(232)。第二部分包括一个锥形孔(222),根据该实施例,该锥形孔(222)具有与其延伸的第一部分的锥形孔(221)相同的锥度。两个部分(211,212)的定心装置(231,232)确保两个锥形孔的共轴性。根据一个变型实施例(未示出),两个孔(221,222)的锥度明显不同,以例如改变射流的形状以及在喷嘴出口处的聚焦点。
根据该实施例,外锥体的第二部分(212)由铜制成,以便在光线直接或通过反射接触第二部分的壁的情况下限制其对激光的灵敏度。根据一个实施例,选择该第二部分的厚度,使得在锥体的该第二部分(212)与正在制造的部件或与机器的一部分碰撞的情况下,第二部分(212)在不损害碰撞物的情况下变形。
根据未示出的另一个实施例,根据本发明的锥体的第二部分(212)的全部或一部分由易碎材料(例如陶瓷)构成。该实施例使得有必要时该第二部分可以更好地抵抗由被喷射的金属粉末的通过引起的磨损,并且另一方面,还可以在一个确定的力的作用下断裂,从而通过其过度变形,防止第二部分(212)在碰撞时损坏中间锥体。有利地,装置(未示出)允许检测可熔部分的这种断裂,以便在发生这种碰撞时使机器停止运转。这些装置例如由形变测定仪构成,该形变测定仪固定于锥体的第二部分(212)的可熔部分或可熔部分与第二部分的其余部分之间。这些装置预先安装于所述第二部分,并包括与制造机器的主轴上的连接器电连接的装置。
根据该实施例,外锥体(210)的第二部分(212)通过螺母(213)固定于锥体的第一部分(211),该螺母与锥体的第一部分(211)的圆柱形螺纹部分相接合。根据该实施例,螺纹部分的直径大于该第一部分的定心部(231)的直径,该定心部(231)作为公定心部。可替代地,锥体的第二部分(212)通过第一部分端部处的多个螺钉固定。可替代地,锥体的第二部分例如通过锥形螺纹拧于第一部分,该锥形螺纹同时确保两个部分(211,212)彼此间的定心和固定。
以上描述和实施例表明,本发明实现了预期目标,特别是,其利用了喷嘴的外锥体的两个可拆卸部分的构造,不仅降低了在发生碰撞的情况下喷嘴的更换和修理的成本,而且在通过粉末喷射的增材制造方法的操作和安全性上带来了额外的有益效果。
Claims (4)
1.喷嘴,其用于通过粉末的喷射/熔融并依照中空锥形射流来进行增材制造,所述喷嘴包括:
- 一个外锥体(210),
- 一个内锥体
- 以及一个中间锥体,
所述粉末被喷射到处于外锥体(210)的内表面和中间锥体的外表面之间的锥形环形空间中,所述外锥体包括一个第一部分和一个第二部分(212),其中,所述第一部分(211)包括一个环,所述环具有一个内部锥形孔(221)和一个与所述内部锥形孔同轴的定心部(231),所述第二部分(212)以所述定心部(231)为中心,通过可拆卸装置(213)沿所述锥体的轴与所述第一部分组装,其特征在于:所述外锥体的所述第二部分(212)包括一个可熔部分,该可熔部分能够在一个确定的力的作用下断裂或变形而不损坏所述第一部分。
2.根据权利要求1所述的喷嘴,其中,所述外锥体的所述第一部分(211)与所述第二部分(212)由不同材料制成。
3.根据权利要求1所述的喷嘴,其中,所述外锥体的所述第二部分(212)的内部锥形孔的锥度与所述第一部分(211)的所述内部锥形孔(221)的锥度不同。
4.根据权利要求1所述的喷嘴,其包括用于检测所述第二部分的所述可熔部分的断裂的检测装置。
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PCT/EP2016/082950 WO2017114964A1 (fr) | 2015-12-31 | 2016-12-31 | Dispositif de fabrication additive par projection et fusion de poudre |
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FR3073761B1 (fr) * | 2017-11-17 | 2022-03-11 | Safran Aircraft Engines | Outillage ameliore pour la fabrication additive |
WO2019122526A2 (en) * | 2017-12-21 | 2019-06-27 | Jauhe Oy | A nozzle for 3d-printing, 3d-printer, a printing system and a robot controlling system |
US20200139621A1 (en) * | 2018-11-07 | 2020-05-07 | Ethicon Llc | 3d printed in-process powder capsule for printing material powder characterization |
KR102265543B1 (ko) * | 2019-05-27 | 2021-06-15 | 김민성 | 스프레이 캔 자동분사장치 |
CN112475539A (zh) * | 2020-11-23 | 2021-03-12 | 上海应用技术大学 | 一种多丝金属电弧熔丝增材制造装置 |
US11964437B1 (en) | 2021-03-30 | 2024-04-23 | Mark Lamoncha | Additive manufacturing by solvent melding of build material |
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WO2013046950A1 (ja) * | 2011-09-30 | 2013-04-04 | 株式会社日立製作所 | パウダ供給ノズルおよび肉盛溶接方法 |
US8901453B2 (en) * | 2010-12-13 | 2014-12-02 | Hitachi, Ltd. | Laser processing system and overlay welding method |
CN104694922A (zh) * | 2015-03-30 | 2015-06-10 | 湖南大学 | 一种环孔式激光同轴送粉喷嘴 |
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2015
- 2015-12-31 FR FR1502753A patent/FR3046367A1/fr active Pending
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2016
- 2016-12-31 KR KR1020187022029A patent/KR20180100359A/ko not_active Application Discontinuation
- 2016-12-31 JP JP2018534786A patent/JP6827471B2/ja active Active
- 2016-12-31 WO PCT/EP2016/082950 patent/WO2017114964A1/fr active Application Filing
- 2016-12-31 EP EP16829101.1A patent/EP3397394B1/fr active Active
- 2016-12-31 CN CN201680082585.3A patent/CN108698060B/zh active Active
- 2016-12-31 US US16/067,613 patent/US10773268B2/en active Active
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CN201128758Y (zh) * | 2007-11-09 | 2008-10-08 | 燕山大学 | 激光熔覆用送粉轴线可调的送粉头 |
US8901453B2 (en) * | 2010-12-13 | 2014-12-02 | Hitachi, Ltd. | Laser processing system and overlay welding method |
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CN104694922A (zh) * | 2015-03-30 | 2015-06-10 | 湖南大学 | 一种环孔式激光同轴送粉喷嘴 |
Also Published As
Publication number | Publication date |
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CN108698060A (zh) | 2018-10-23 |
EP3397394A1 (fr) | 2018-11-07 |
JP2019500247A (ja) | 2019-01-10 |
WO2017114964A1 (fr) | 2017-07-06 |
EP3397394B1 (fr) | 2019-06-19 |
FR3046367A1 (fr) | 2017-07-07 |
KR20180100359A (ko) | 2018-09-10 |
US10773268B2 (en) | 2020-09-15 |
US20190009288A1 (en) | 2019-01-10 |
JP6827471B2 (ja) | 2021-02-10 |
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