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    Selective laser sintering at melting temperature
    1.
    发明授权
    Selective laser sintering at melting temperature 有权
    熔化温度下选择性激光烧结

    公开(公告)号：US06215093B1

    公开(公告)日：2001-04-10

    申请号：US09319132

    申请日：1999-07-12

    申请人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    发明人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    IPC分类号： B22F3105

    CPC分类号： B22F3/1055 ,  B23K26/32 ,  B23K26/34 ,  B23K35/0244 ,  B23K2103/50 ,  B29C64/153 ,  B29C2791/005 ,  B33Y50/00 ,  Y02P10/295

    摘要： A method is disclosed for manufacturing a molded body, in accordance with three-dimensional CAD data of a model of a molded body, by depositing layers of a metallic material in powder form. Several layers of powder are successively deposited one on top of the other, whereby each layer of powder is heated to a specific temperature by means of a focused laser beam applied to a given area corresponding to a selected cross-sectional area of the model of the molded body, before deposition of the next layer. The laser beam is guided over each layer of powder in accordance with the CAD cross-sectional data of the selected cross-sectional area of the model in such a way that each layer of powder is fixed to the layer below it. The method is characterized in that the metallic material in powder form is applied in the form of a metallic powder free of binders and fluxing agents, that it is heated by the laser beam to melting temperature, that the energy of the laser beam is chosen in such a way that the layer of metallic powder is fully molten throughout at the point of impact of said laser beam, that the laser beam is guided across the specified area of powder in several runs in such a way that each run of the laser beam partly overlaps the preceding run, and that a protective gas atmosphere is maintained above the interaction zone of the laser beam and the metallic powder.

    摘要翻译： 公开了根据成型体模型的三维CAD数据，通过以粉末形式沉积金属材料层来制造成型体的方法。 将几层粉末依次沉积在另一层之上，由此通过施加到对应于所选择的模型的所选横截面积的给定区域的聚焦激光束将每层粉末加热到特定温度 成型体，在沉积下一层之前。 根据所选择的模型横截面积的CAD截面数据，激光束被引导到每一层粉末上，使得每层粉末固定在其下面的层中。 该方法的特征在于粉末形式的金属材料以不含粘合剂和助熔剂的金属粉末的形式施加，其被激光束加热至熔融温度，激光束的能量选择在 这样一种方式使得金属粉末层在所述激光束的冲击点处完全熔化，激光束以多次运行被引导穿过特定的粉末区域，使得激光束的每次运行部分地 与先前的运行重叠，并且在激光束和金属粉末的相互作用区域之上保持保护气体气氛。

    Method and device for scanning the surface of an object with a laser beam
    3.
    发明授权
    Method and device for scanning the surface of an object with a laser beam 有权
    用激光束扫描物体表面的方法和装置

    公开(公告)号：US06534740B1

    公开(公告)日：2003-03-18

    申请号：US09762434

    申请日：2001-02-08

    申请人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    发明人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    IPC分类号： B23K2600

    CPC分类号： B22F3/1055 ,  B23K26/10 ,  Y02P10/295

    摘要： The present invention relates to a device and a process using a laser beam to scan an area of an object, in particular, for selective laser melting of metal powder for fabrication of a mold. The device is provided with a plotter mechanic with two linear axes (4, 5) over which a carrier element can be positioned and moved, an optical means, which guides the laser beam to the carrier element or provides the laser beam at the carrier element, a scanning means (9) at the carrier element, which guides the laser beam to the area of the object and moves the laser beam back and forth in a presetable angle, a focusing optic (15) for focusing the laser beam (8) onto the area of the object (11). The plotter mechanic is disposed in such a manner that the plotter mechanic can position and move the carrier element at a distance over the area of the object (11), which distance permits the use of a focusing optic (15) of short focal length for focusing said laser beam to a diameter of

    摘要翻译： 本发明涉及一种使用激光束扫描物体区域的装置和方法，特别涉及用于制造模具的金属粉末的选择性激光熔化。 该装置设置有具有两个线性轴线（4,5）的绘图仪器，载体元件可以在该线性轴上定位和移动，光学装置将激光束引导到载体元件或在载体元件处提供激光束 ，在载体元件处的扫描装置（9），其将激光束引导到物体的区域并以可预设的角度来回移动激光束;用于聚焦激光束（8）的聚焦光学元件（15） 到物体（11）的区域上。 绘图机械师以这样的方式设置，使得绘图机械师可以在物体（11）的区域上定位和移动载体元件一定距离，该距离允许使用短焦距聚焦光学元件（15） 在所述物体（11）的区域中将所述激光束聚焦到直径<200μm的激光束。 该装置通过使用扫描仪结合了聚焦激光束的快速移动的优点，其优点是通过使用绘图仪来移动光束，处理场的尺寸与聚焦光学元件的焦距无关。

    Device and method for the preparation of building components from a combination of materials
    7.
    发明授权
    Device and method for the preparation of building components from a combination of materials 有权
    从材料组合制备建筑构件的装置和方法

    公开(公告)号：US06861613B1

    公开(公告)日：2005-03-01

    申请号：US10030940

    申请日：2000-06-26

    申请人： Wilhelm Meiners ,  Andres Gasser ,  Konrad Wissenbach

    发明人： Wilhelm Meiners ,  Andres Gasser ,  Konrad Wissenbach

    IPC分类号： B22C7/00 ,  B23K26/32 ,  B29C67/00 ,  B23K26/00

    CPC分类号： B29C64/153 ,  B29C2791/005 ,  B33Y10/00 ,  B33Y30/00

    摘要： The present invention relates to a generative method of fabrication and an accompanying device with which components can be fabricated from a combination of materials. The device comprises a bottom surface (1) with a lowerable building platform (2), a leveling mechanism (5) for leveling a first material (4) in a processing plane (3) above the building platform (2), a laser beam source for emitting a laser beam (11), a processing unit (6) with a focusing optical system (8) for focusing the laser beam (11) onto the processing plane (3) and a positioning mechanism which can position the processing unit (6) in any desired positions in a plane parallel to the processing plane (3) above the component (14). Furthermore, the device is provided with a suction device (10) for sectioning off the material from the processing plane (3) and an introduction mechanism (9) for a second material (12) with which the latter is brought into the focal range of the laser beam (11). This device permits fabrication of components of any desired complexity and adapted to a certain function, in which individual regions can be made of a second, harder material to increase sturdiness or to improve wear-resistance.

    摘要翻译： 本发明涉及一种生成的制造方法和一种伴随装置，其中可以通过材料的组合来制造部件。 该装置包括具有可降低的建筑平台（2）的底面（1），用于在建筑物平台（2）上方的处理平面（3）中调平第一材料）的调平机构（5），激光束 用于发射激光束的光源（11），具有聚焦光学系统（8）的处理单元（6），用于将激光束（11）聚焦到处理平面（3）上;以及定位机构，其可以将处理单元 6）在与组件（14）上方的处理平面（3）平行的平面中的任何期望位置。 此外，该装置设置有用于从处理平面（3）分离材料的抽吸装置（10）和用于第二材料（12）的引入机构（9），后者进入到焦点范围 激光束（11）。 该装置允许制造任何期望的复杂性的部件，并适应于某种功能，其中各个区域可由第二较硬的材料制成以增加坚固性或改善耐磨性。

    Process chamber for selective laser fusion
    8.
    发明授权
    Process chamber for selective laser fusion 有权
    用于选择性激光融合的处理室

    公开(公告)号：US06583379B1

    公开(公告)日：2003-06-24

    申请号：US09856533

    申请日：2001-08-02

    申请人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    发明人： Wilhelm Meiners ,  Konrad Wissenbach ,  Andres Gasser

    IPC分类号： B23K2612

    CPC分类号： B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B23K26/12 ,  B23K26/123 ,  B23K26/127 ,  B23K26/142 ,  B23K26/1476 ,  B29C64/153 ,  B29C2791/005 ,  B33Y30/00 ,  Y02P10/295 ,  B22F2201/12

    摘要： The invention relates to a process chamber for the selective laser fusion of material powder for the production of moulded parts. The process chamber consists of a closed chamber (1) having a bottom area, side walls and a cover area (6), a reservoir volume (3) and a production volume (2) in said bottom area, and first inlet and outlet openings (7, 9) for a protective gas. In the cover area (6), above the production volume (2), a raised region is provided with side areas, in which a beam injection window (10) is disposed that is transparent to laser radiation to be coupled in. Second inlet openings (13) are provided for a further gas in the side areas of the raised region. With the inventive design of the process chamber it is possible to protect the beam injection window (10) efficiently from being soiled by gaseous components rising from the zone of interaction, without impairment of the efficiency in guiding the protective gas.

    摘要翻译： 本发明涉及用于生产模制件的材料粉末的选择性激光熔化的处理室。 处理室包括具有底部区域，侧壁和盖区域（6），储存容积（3）和所述底部区域中的生产体积（2）的封闭腔室（1），以及第一入口和出口 （7,9）用于保护气体。 在覆盖区域（6）中，在生产体积（2）之上，凸起区域设置有侧面区域，其中设置对待耦合的激光辐射透明的射束注入窗口（10）。第二入口 （13）用于在凸起区域的侧面区域中的另外的气体。 利用处理室的本发明设计，可以有效地防止光束注入窗口（10）被从相互作用区域上升的气体组分污染，而不损害引导保护气体的效率。