CN111186134A - 离心增材制造设备及方法 - Google Patents

离心增材制造设备及方法 Download PDF

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CN111186134A
CN111186134A CN201911113154.0A CN201911113154A CN111186134A CN 111186134 A CN111186134 A CN 111186134A CN 201911113154 A CN201911113154 A CN 201911113154A CN 111186134 A CN111186134 A CN 111186134A
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operable
drum
additive manufacturing
build
work surface
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唐纳德·迈克尔·科斯米耶
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General Electric Co
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General Electric Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
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    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10Formation of a green body
    • B22F10/14Formation of a green body by jetting of binder onto a bed of metal powder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
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    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20Direct sintering or melting
    • B22F10/25Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
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    • B23K15/00Electron-beam welding or cutting
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    • B23K15/00Electron-beam welding or cutting
    • B23K15/0046Welding
    • B23K15/0093Welding characterised by the properties of the materials to be welded
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0006Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0622Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/12Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
    • B23K26/127Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
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    • B23K26/144Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
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    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34Laser welding for purposes other than joining
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C41/04Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/042Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
    • B29C41/045Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry the axis being placed vertically, e.g. spin casting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C64/10Processes of additive manufacturing
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    • B29C64/10Processes of additive manufacturing
    • B29C64/165Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
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    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
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    • B33ADDITIVE MANUFACTURING TECHNOLOGY
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Abstract

一种增材制造设备,包括:构建鼓筒,构建鼓筒具有限定工作表面的周壁,构建鼓筒安装成用于绕着中心轴线旋转;驱动机构,能够操作成使构建鼓筒绕着中心轴线旋转,以通过离心力使可凝固材料保持在工作表面上;以及材料沉积凝固设备,包括:材料沉积器,能够操作成使可凝固材料沉积在工作表面上;和能够操作成选择性地凝固可凝固材料的设备。

Description

离心增材制造设备及方法
技术领域
本发明大体涉及增材制造,更具体地,涉及用于增材制造中的可固化材料处置的方法。
背景技术
增材制造是一种逐片、逐线、逐层构建材料以形成部件的处理。增材制造还通过诸如“分层制造”、“反向加工”、“直接金属激光熔化”(DMLM)和“3D打印”的术语来指代。这种术语当作出于本发明的目的的同义词。
一种类型的增材制造机器称之为“粉末床”机器并且包括构建腔室,构建腔室包围通过激光选择性地熔融以形成工件的大量粉末。
在一些应用中,想要制作大的环形部件。伴随使用现有的增材制造机器制造环形部件的一个问题是,即使大部分粉末不会用以形成部件,它们也要求大的、重的粉末床。
发明内容
通过增材制造方法解决了这些问题中的至少一个,其中,材料通过离心力沉积并保持在旋转鼓筒的周壁上。
根据文中描述的技术的一个方面,一种增材制造设备包括:构建鼓筒,构建鼓筒具有限定工作表面的周壁,构建鼓筒安装成用于绕着中心轴线旋转;驱动机构,能够操作成使构建鼓筒绕着中心轴线旋转,以通过离心力使可凝固材料保持在工作表面上;材料沉积凝固设备,包括:材料沉积器,能够操作成使可凝固材料沉积在工作表面上;和
能够操作成选择性地凝固可凝固材料的设备。
根据文中描述的技术的另一方面,一种制作工件的方法包括:使可凝固材料沉积在构建鼓筒中,构建鼓筒具有限定工作表面的周壁;使构建鼓筒绕着中心轴线旋转,以通过离心力来抵靠工作表面保持可凝固材料;以及,在构建鼓筒旋转的同时,以与工件的一层对应的图案选择性地凝固可凝固材料。
附图说明
通过参考以下连同附图一起的描述可以最好地了解本发明,其中:
图1是示范性增材制造设备的示意性俯视图,局部剖开以示出某些细节;
图2是图1的设备的示意性部分截面左侧正视图;
图3是图1的设备的示意性部分截面右侧正视图;
图4是替代的构建鼓筒的示意性横截面视图;
图5是另一替代的构建鼓筒的示意性横截面视图;
图6是图1的设备的一部分的放大视图,图示增材制造处理;
图7是图1的设备的示意性部分截面的左侧正视图,图示替代的增材制造处理;
图8是图1的设备的一部分的放大视图,修改为替代的增材材料沉积凝固设备。
图9是图1的设备的一部分的放大视图,修改为替代的增材材料沉积凝固设备。
具体实施方式
文中公开的概念提出一种增材制造方法及相关设备,其中,可凝固材料沉积在旋转的构建鼓筒上并通过离心力保持就位。
参考附图,其中,等同附图标记在各个视图中标示相同元件,图1至图3示意性地图示适合于实行增材制造方法的增材制造机器或设备10。如下面将更详细地说明的,将了解,其他构造的装备可以用以实行文中描述的方法。设备10的基本部件包括构建鼓筒12和材料沉积凝固设备14。
构建鼓筒12是大体刚性的结构。构建鼓筒12在其下端包括底板16,底板16可以是平面的。出于方便描述的目的,底板16可以认为是平行于设备10的XY平面定向,垂直于XY平面的方向标示为Z方向(X、Y和Z是三个互相垂直的方向)。
限定工作表面20的周壁18从底板16向上延伸。周壁18大体是回旋体。周壁18的横截面形状可以变化,以适应将要生产的特定部件。在图1至图3中示出的示例中,周壁18是柱形的,大体上垂直于底板16(即,平行于Z轴)延伸。可选地,周壁18可以制作为能够从底板16移除的分离部件。可选地,周壁18可以制作成两个以上分段。可选地,周壁18可以内衬有堆叠或间隔开的可移除套筒(未示出)或诸多套筒,这将提供构建表面或各构建表面20。又一替代例将具有离散的可移除分段,在绕着周边的适合部位处固接到周壁18,从该处,开始构建。
在图4中示出的另一示范性鼓筒112中,替代的周壁118与底板116成倾斜角度地延伸,限定截头圆锥形状。
在图5中示出的另一示范性鼓筒212中,周壁218具有第一区段217、第二区段219和第三区段221,第一区段217平行于Z方向从底板216竖直地延伸,第二区段219与底板216成倾斜角度地径向向外延伸,第三区段221平行于Z方向延伸。
可选地,构建鼓筒12可以包括盖22,盖22是安置在周壁18的上边缘处的环形状元件。它可以可移除地固接到周壁18,例如,使用机械接头或紧固件(未示出)。盖22的目的是为了在构建处理期间将材料保持就位。
构建鼓筒12支撑在基部24上,使得其可以绕着平行于Z方向的中心轴线26旋转。通过在基部24和构建鼓筒12之间的多个轴承28来提供支撑。驱动机构以变速电力马达30的形式提供。其他安装和驱动系统是可以的;安装和驱动系统将依据对于特定应用的适当性来选定。
构建鼓筒12可以设置有适合的传感器,以提供用于监控或控制其操作的反馈。例如,可以在操作期间感测其旋转速度和/或方位。作为一个示例,鼓筒12可以设置有旋转编码器或解析器,同步或异步的。传感器或各传感器可以与驱动机构一体。代表性传感器32在图2中示意性地示出。
构建鼓筒12可以与各种类型的材料沉积凝固装备一起使用。
图1至图3中示出的材料沉积凝固设备14的一个示例与在“粉末床”增材制造系统中使用的材料沉积凝固设备相似。其包括材料供应部34、重涂覆器36、引导能量源38和射束转向设备40。
提供适合的支撑手段,用于粉末沉积凝固设备10。在图示的示例中,桥接器42在鼓筒12上方水平地跨越,通过竖直立柱44支撑。柱46通过桥接器42承载并且向下延伸到鼓筒12中。提供适合的手段,用于使柱46沿着桥接器42平移。在图2和图3中示意性地描绘了穿行机构48,了解到,诸如气动或液压缸、滚珠丝杠或线性电力致动器之类的设备可以被用于该目的。
材料供应部34包含安装到柱46的料斗50。斜槽52与料斗50连通并终止于材料出口54处。材料出口54可以具有与周壁18的形状紧密配合的形状。料斗50装载有可凝固材料“M”的供应。文中使用的术语“可凝固”指代材料初始时可流动,而不管其相态(即,固体或液体),且响应于能量(诸如,辐射能量)的施加而凝固(即,变成不可流动的固体)。
可选地,设备10可以包括诸多材料供应部34(未示出)。这些可以在柱46上竖直地或周向地排列。替代地,附加材料供应可以通过附加柱(未示出)支撑,附加柱骑跨在较大的梁或附加梁(未示出)上的另一穿行机构(与物件48相似)上。
在一个示例中,可凝固材料M可以是所需成分的粉末(例如,金属的、陶瓷的和/或有机的粉末)。该粉末是“可熔融的”,意味着它能够经由施加充足能量而熔化并固结成块。例如,可熔融性是许多可用的聚合物的、陶瓷的、金属的和有机的粉末的特性。
作为粉末的替代示例,诸如树脂的材料可以使用为可凝固材料M。树脂包含辐射能量可固化以及能够在固化状态下将填料(如果使用)粘合或结合在一起的材料。文中使用的术语“辐射能量可固化”指代响应于施加特定频率和能量水平的辐射能量而凝固的任何材料。例如,树脂可以包含已知类型的光聚合物树脂,该光聚合物树脂含有作用来引发聚合反应的感光引发剂化合物,造成树脂从液体状态变动到固体状态。替代地,树脂可以包含含有溶剂的材料,该溶剂可以通过施加辐射能量而蒸发出。未固化的树脂可以以固体(如,微粒)或液体形式提供。
可以视所需选择树脂的成分,以适应特定应用。可以使用不同成分的混合物。可以选定具有在进一步处理(诸如,烧结工艺)期间放气或烧尽的能力的树脂。
树脂可以并入填料。填料可以与树脂预混合,然后装载到材料供应34中。填料包含颗粒,通常限定为“非常小的物质”。填料可以包含与选定树脂化学和物理相容的任何材料。颗粒可以形状上规则或不规则,可以大小上均匀或不均匀,可以具有可变的纵横比。例如,颗粒可以采取小球或微粒的粉末形式,或者可以类似小杆或纤维成形。
可以视所需选定填料的成分,包括其化学和微观结构,以适应特定应用。例如,填料可以是金属的、陶瓷的、聚合物的和/或有机的。可以使用不同成分的混合物。填料可以是可熔融的,如上面限定的。
可以选定填料与树脂的比例,以适应特定应用。大体上,可以使用任何量的填料,只要组合的材料能够流动并且平整化,并且有充足的树脂来将固化状态下的填料颗粒保持在一起。树脂和填料的混合物可以称之为“浆料”。
可以使用其他类型的材料供应;例如,代替重力进送料斗,可以使用动力进送器。
重涂覆器36是位于工作表面20上的刚性、竖直延伸的结构。重涂覆器36连接到斜槽52和/或料斗50,从而可以例如通过移动柱46定位在距工作表面20精确距离。
可选地,设备10可以包括诸多重涂覆器36(未示出)。这些可以在柱46上竖直地或周向地排列。替代地,附加重涂覆器可以通过附加柱(未示出)支撑,附加柱骑跨在较大的梁或附加梁(未示出)上的另一穿行机构(与物件48相似)上。
多余材料可能捕获在底板16和盖22之间,在该处,它可能被抛掷到工作表面20上。因此,可选地,擦拭器、刮擦器或相似装置可以放置在适当位置,例如,在材料出口54的顶部和底部或重涂覆器36的上端和下端附近,以便捕获多余材料。然后,可以将多余材料M输送(例如,通过真空、输送器或重力进送)回到料斗50或被处置掉。在图2中示出的示例中,铲子57设置在邻近材料出口54的斜槽52的上端和下端附近。这些通过管线59连接到真空61,真空61将过多材料M通过管线59拉出并将其排出到回收容器63中。
引导能量源38可以包含能够操作成产生有适合功率和其它操作特性的射束的任何设备,以在构建处理期间熔化和熔融材料M,或者固化材料M,下面更详细地描述。例如,引导能量源38可以是激光器。其他引导能量源(诸如,电子束枪)是激光器的适合的替代例。
射束转向设备40可以包括一个以上反射镜、棱镜、和/或透镜并且设置有合适的致动器,布置成使得来自引导能量源38的射束“B”可以聚焦到所需光斑大小并且转向到与工作表面20重合的平面中的所需位置。射束B文中可以称之为“构建射束”。
可选地,设备10可以包括诸多引导能量源38(未示出)。这些可以在柱46上竖直地或周向地排列。替代地,附加引导能量源可以通过附加柱(未示出)支撑,附加柱骑跨在较大的梁或附加梁(未示出)上的另一穿行机构(与物件48相似)上。
可选地,设备10可以包括诸多射束转向设备40(未示出)。这些可以在柱46上竖直地或周向地排列。替代地,附加射束转向设备可以通过附加柱(未示出)支撑,附加柱骑跨在较大的梁或附加梁(未示出)上的另一穿行机构(与物件48相似)上。
设备10可以包括控制器56。图1中的控制器56是控制设备10、构建鼓筒12、引导能量源38、射束转向设备以及上述各种马达和致动器的操作所要求的硬件和软件的总体代表。控制器56可以例如体现在一个以上装置(诸如可编程逻辑控制器(“PLC”)或微型计算机)中的一个以上处理器上运行的软件。这种处理器可以联接到传感器和操作部件,例如,通过有线或无线连接。可以使用相同的处理器或各处理器来取回和分析传感器数据,用于统计分析,以及用于反馈控制。
可选地,设备10的部件可以由壳体(未示出)围绕,壳体可以用以提供遮护或惰性气体氛围。可选地,壳体内的压力可以维持在大于或小于大气压的所需水平。可选地,壳体可以是温度和/或湿度受控的。可选地,可以基于诸如时间间隔、温度、湿度和/或化学组分浓度的因素来控制壳体的通风。
使用上述装置的用于工件W的示范性基本构建处理如下。将了解,作为生产部件的预制件并且使用设备10,将工件W软件建模为层的堆叠。每一层可以划分成像素网格。将了解,各个层不需要是平面的。例如,当制造环形工件时,各个层可以与薄筒或其他薄的环形形状相似。实际的工件W可以建模和/或制造为数十或数百层的堆叠。合适的软件建模处理在本领域中是已知的。
参考图6,初始时,鼓筒12以选定的旋转速度转动。使柱46移动,从而材料出口54与工作表面20以选定的层增量间隔开。层增量影响增材制造处理的速度和工件W的分辨率。例如,层增量可以是约10到50微米(0.0003到0.002英寸)。然后,使可凝固材料M沉积在工作表面20上。随着鼓筒12的旋转,离心力趋于抵靠工作表面20驱动材料M。随着带有材料M的旋转鼓筒12经过重涂覆器36,重涂覆器36在工作表面20上将材料M散布成均匀的厚度。平整化的材料M可以称之为“构建层”,其显露的表面可以称之为“构建表面”57。
在操作期间,控制鼓筒12的旋转速度,以维持充足的离心力,以保持材料M抵靠工作表面20或抵靠用于后续层的下方材料。鼓筒12的旋转速度可以设限,以便将鼓筒和材料M上的力限制到可接受的数值。随着处理进行,速度可以变化。例如,随着添加材料并且显露的构建表面57的半径减小,旋转速度可以变化,以给出恒定的表面速度。已知容许的力、鼓筒12的尺寸和材料M的密度,可以计算出所要求的精准速度。
在使用可熔融材料的情况下,引导能量源38用以熔化正在构建的工件W的一部分。引导能量源38发出射束“B”,射束转向设备40用以使射束B的焦斑以适当图案在显露的材料构建表面57上转向。这可以称之为“选择性”凝固,而不是,非选择性凝固,其中,整个构建表面57将受到辐射能量。围绕焦斑的材料M的显露层的小部分(文中称之为“焊池”)通过构建射束B加热到允许其烧结或熔化、流动和固结的温度。例如,焊池可以在大约100微米(0.004英寸)宽。该步骤可以称之为“熔融”材料M。
在使用可固化材料代替可熔融材料的情况下,响应于显露于构建射束B,围绕焦斑的材料M的显露层的小部分凝固。该步骤可以称之为“固化”材料M。
将了解,因为鼓筒12正在旋转,所以,可以通过射束转向设备40、引导能量源38的脉冲定时和/或鼓筒12的移动的组合,来完成焊池或焦斑的转向。材料凝固操作可以与鼓筒12的旋转同步或异步。例如,如果想要生成完整的环形特征,可以在鼓筒12旋转的同时连续地激活射束B,因而凝固一圈材料M。射束B可以在Z方向上转向,以在竖直方面形成工件W。作为另一示例,如果想要生成诸如支柱或凸缘的轴向特征,则,这可以通过在鼓筒12旋转时短暂地激活构建射束B来完成。
材料出口54以层增量径向向内移动,另一层材料M以相似厚度施加。引导能量源38再次发出构建射束B,射束转向设备40用以使射束B的焦斑在显露的材料构建表面上以适当图案转向。材料的显露层被熔融和/或固化,从而其可以在顶层和先前凝固的下层两者内烧结或熔化、流动或以其他方式固结。
重复移动材料出口54、施加材料M、然后引导能量凝固材料M的循环,直到整个工件W完成为止。
该处理可以是连续的或部分连续的。换言之,工件W可以在单个连续的螺旋层而非离散层中构建起来。
材料M可以从任何方向熔融。例如,构建射束B可以在大体轴向方向上投射,在大体竖直方向上构建层,而非在大体径向方向上投射并熔融平行于周壁18的周向层。其示例在图7中示出。
如上面注明的,离心鼓筒概念可以与多于一种类型的材料沉积凝固设备一起使用。图8图示另一替代类型的材料沉积凝固设备114。其与在常规引导能量沉积(“DED”)增材制造系统中使用的相似。它包括辐射能量源138、射束输送管道140、材料进送喷嘴142和料斗150,辐射能量源138是诸如激光或电子射束发生器,射束输送管道140包括内部激光聚焦光学器件,材料进送喷嘴142与射束输送管道140同轴,料斗150构造成存储和计量到进送喷嘴142的材料。将进送喷嘴142结构化,从而材料以同心地围绕激光束的均匀流的形式从进送喷嘴142的末端处的端开口144离开,激光束也从进送喷嘴142的端开口144离开。激光束的能量会造成材料M凝固。
又一类型的材料凝固处理是“粘合剂喷射”处理。不像激光熔化和激光烧结增材制造技术,加热材料以固结并构建材料层来形成打印零件(如,金属或陶瓷零件),粘合剂喷射使用化学粘合剂将材料的颗粒结合成层,形成打印零件的生坯。如文中限定的,打印零件的生坯意在标示未经历热处理以去除化学粘合剂的打印零件。在粘合剂喷射打印中,化学粘合剂连续沉积到粉末层中,以打印零件。例如,化学粘合剂(如,聚合物黏合剂)可以以代表正在打印的零件的层的图案而选择性地沉积到粉末上。在打印之后,每个打印层可以固化(例如,经由加热、光照、湿气、溶剂蒸发等),以将每个层的颗粒结合在一起,以形成生坯零件。在生坯零件完全形成之后,在后打印处理期间(例如,脱脂和烧结)去除化学粘合剂,以形成固结零件。
图9是并入粘合剂喷射设备238的替代类型的材料沉积凝固设备214的简化示图,可以用以通过使粘合剂选择性地沉积到材料M上来实行粘合剂喷射处理。(上述相同类型的材料供应34可以连同粘合剂喷射器238一起使用。)粘合剂喷射装置在本领域中大体是已知的。在图示实施例中,粘合剂喷射设备238包括打印机头部240,打印机头部240包括喷嘴阵列242。打印机头部240与流体粘合剂储存器254连通。整个设备238安装到柱46,以便它可以在Z方向上移动,例如,通过由适当的致动器(未示出)沿着导轨246驱动。
使用材料沉积凝固设备10的构建处理与上述处理相似,主要不同是,来自进送喷嘴242的材料M沉积并立即凝固,而不是先铺放在一层中。
文中描述的方法及设备具有优于现有技术的若干优点。特别地,它消除常规粉末床方法的块头、成本和材料浪费。
前述内容已描述了用于使用离心鼓筒进行增材制造的方法及设备。本说明书中公开的全部特征(包括任何随附的权利要求书、摘要和附图)和/或这样公开的任何方法或处理的所有步骤可以以任何组合来组合,除了这些特征和/或步骤中的至少一些特征和/或步骤的组合是互斥的情况以外。
除非另有明确声明,否则,本说明书中公开的每个特征(包括任何随附的权利要求书、摘要和附图)可以更替为服务于相同、等效或相似目的的替代特征。因而,除非另有明确声明,否则,所公开的每个特征仅是一通用系列等效或相似特征的一个示例。
本发明不受限于前述实施例的细节。本发明扩展到本说明书中公开的特征中的任何新颖特征或任何新颖组合(包括任何随附的权利要求书、摘要和附图),或者,扩展到这样公开的任何方法或处理的步骤中的任何新颖步骤或任何新颖组合。
本发明的进一步方面通过以下条项的主题提供:
1.一种增材制造设备,包含:构建鼓筒,所述构建鼓筒具有限定工作表面的周壁,所述构建鼓筒安装用于绕着中心轴线旋转;驱动机构,所述驱动机构能够操作成使所述构建鼓筒绕着所述中心轴线旋转,以便通过离心力使可凝固材料保持在所述工作表面上;以及材料沉积凝固设备,所述材料沉积凝固设备包括:材料沉积器,所述材料沉积器能够操作成使所述可凝固材料沉积在所述工作表面上;和能够操作成选择性地凝固所述可凝固材料的设备。
2.根据任何在前条项的设备,其中,能够操作成选择性地凝固所述可凝固材料的所述设备包括辐射能量源,所述辐射能量源定位成邻近于所述构建鼓筒,并且能够操作成在所述可凝固材料上产生和投射辐射能量。
3.根据任何在前条项的设备,其中,能够操作成选择性地凝固所述可凝固材料的所述设备包括粘合剂喷射打印机头部。
4.根据任何在前条项的增材制造设备,其中,所述驱动机构能够操作成使所述构建鼓筒以可变速度旋转。
5.根据任何在前条项的增材制造设备,进一步包含:传感器,所述传感器能够操作成产生指示下述中的至少一个的信号:所述构建鼓筒的旋转速度和所述构建鼓筒相对于所述材料沉积凝固设备的角度取向;以及控制器,所述控制器能够操作成响应于来自所述传感器的信号而控制所述驱动机构的所述旋转速度。
6.根据任何在前条项的增材制造设备,其中,所述构建鼓筒包含底板,所述周壁从所述底板延伸。
7.根据任何在前条项的增材制造设备,其中,所述周壁的至少一部分与所述底板成倾斜角度地延伸。
8.根据任何在前条项的增材制造设备,其中,所述材料沉积凝固设备通过平移柱支撑,所述平移柱从跨越在所述构建鼓筒上方的桥接器向下延伸到所述构建鼓筒中。
9.根据任何在前条项的设备,其中,所述材料沉积凝固设备包括:材料沉积器,所述材料沉积器能够操作成使所述可凝固材料沉积在所述工作表面上;辐射能量源,所述辐射能量源能够操作成产生辐射能量束;和射束转向设备,所述射束转向设备能够操作成将来自所述辐射能量源的射束引导到所述可凝固材料上。
10.根据任何在前条项的设备,其中,所述材料沉积器包括料斗,所述料斗与终止于材料开口处的斜槽连通。
11.根据任何在前条项的设备,其中,所述材料沉积器包括重涂覆器,所述重涂覆器能够操作成将材料散布在所述工作表面上。
12.根据任何在前条项的设备,其中,所述材料沉积凝固设备包括:辐射能量源;射束输送管道,所述射束输送管道能够操作成使来自所述辐射能量源的射束穿过其中;以及材料进送喷嘴,所述材料进送喷嘴安置在所述射束输送管道的远端处并且定位成与所述射束输送管道同轴。
13.一种制作工件的方法,包含:使可凝固材料沉积在构建鼓筒中,所述构建鼓筒具有限定工作表面的周壁;使所述构建鼓筒绕着中心轴线旋转,以便通过离心力来保持所述可凝固材料抵靠所述工作表面;在所述构建鼓筒旋转的同时,以与所述工件的横截面层对应的图案来选择性地凝固所述可凝固材料。
14.根据任何在前条项的方法,其中,选择性地凝固的步骤包括:在所述构建鼓筒旋转的同时,引导来自引导能量源的构建射束,以与所述工件的横截面层对应的图案选择性地凝固所述可凝固材料。
15.根据任何在前条项的方法,其中,选择性地凝固的步骤包括:从粘合剂喷射设备选择性地施加粘合剂。
16.根据任何在前条项的方法,进一步包含,循环重复沉积和凝固的步骤,以逐层方式构建所述工件。
17.根据任何在前条项的方法,进一步包含,使所述构建鼓筒以可变的旋转速度旋转,以便在凝固所述可凝固材料的同时维持恒定的表面速度。
18.根据任何在前条项的方法,其中,所述构建射束相对于所述构建鼓筒的旋转被同步地操作。
19.根据任何在前条项的方法,进一步包含:使用传感器来产生指示下述中的至少一个的信号:所述构建鼓筒的旋转速度和所述构建鼓筒相对于所述材料沉积凝固设备的角度取向;以及响应于来自所述传感器的信号而控制所述驱动机构的所述旋转速度。
20.根据任何在前条项的方法,其中,所述可凝固材料从材料沉积凝固设备沉积,所述材料沉积凝固设备包括:辐射能量源;射束输送管道,所述射束输送管道能够操作成使来自所述辐射能量源的射束穿过其中;以及材料进送喷嘴,所述材料进送喷嘴安置在所述射束输送管道的远端处并且定位成与所述射束输送管道同轴。

Claims (10)

1.一种增材制造设备,其特征在于,包含:
构建鼓筒,所述构建鼓筒具有限定工作表面的周壁,所述构建鼓筒安装用于绕着中心轴线旋转;
驱动机构,所述驱动机构能够操作成使所述构建鼓筒绕着所述中心轴线旋转,以便通过离心力使可凝固材料保持在所述工作表面上;以及
材料沉积凝固设备,所述材料沉积凝固设备包括:
材料沉积器,所述材料沉积器能够操作成使所述可凝固材料沉积在所述工作表面上;和
能够操作成选择性地凝固所述可凝固材料的设备。
2.如权利要求1所述的设备,其特征在于,其中,能够操作成选择性地凝固所述可凝固材料的所述设备包括辐射能量源,所述辐射能量源定位成邻近于所述构建鼓筒,并且能够操作成在所述可凝固材料上产生和投射辐射能量。
3.如权利要求1所述的设备,其特征在于,其中,能够操作成选择性地凝固所述可凝固材料的所述设备包括粘合剂喷射打印机头部。
4.如权利要求1所述的增材制造设备,其特征在于,其中,所述驱动机构能够操作成使所述构建鼓筒以可变速度旋转。
5.如权利要求1所述的增材制造设备,其特征在于,进一步包含:
传感器,所述传感器能够操作成产生指示下述中的至少一个的信号:所述构建鼓筒的旋转速度和所述构建鼓筒相对于所述材料沉积凝固设备的角度取向;以及
控制器,所述控制器能够操作成响应于来自所述传感器的信号而控制所述驱动机构的所述旋转速度。
6.如权利要求1所述的增材制造设备,其特征在于,其中,所述构建鼓筒包含底板,所述周壁从所述底板延伸。
7.如权利要求6所述的增材制造设备,其特征在于,其中,所述周壁的至少一部分与所述底板成倾斜角度地延伸。
8.如权利要求1所述的增材制造设备,其特征在于,其中,所述材料沉积凝固设备通过平移柱支撑,所述平移柱从跨越在所述构建鼓筒上方的桥接器向下延伸到所述构建鼓筒中。
9.如权利要求1所述的设备,其特征在于,其中,所述材料沉积凝固设备包括:
材料沉积器,所述材料沉积器能够操作成使所述可凝固材料沉积在所述工作表面上;
辐射能量源,所述辐射能量源能够操作成产生辐射能量束;和
射束转向设备,所述射束转向设备能够操作成将来自所述辐射能量源的射束引导到所述可凝固材料上。
10.如权利要求9所述的设备,其特征在于,其中,所述材料沉积器包括料斗,所述料斗与终止于材料开口处的斜槽连通。
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