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24 条记录 (耗时 0.052 秒)

    Method of and apparatus for measuring and controlling fluid level in stereolithography
    4.
    发明授权
    Method of and apparatus for measuring and controlling fluid level in stereolithography 失效
    用于测量和控制立体光刻中液位的方法和装置

    公开(公告)号：US5258146A

    公开(公告)日：1993-11-02

    申请号：US880190

    申请日：1992-05-06

    申请人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran ,  Adam L. Cohen ,  Dennis R. Smalley

    发明人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran ,  Adam L. Cohen ,  Dennis R. Smalley

    IPC分类号： B29C35/08 ,  B29C41/02 ,  B29C41/12 ,  B29C41/52 ,  B29C67/00 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12

    CPC分类号： G05D9/12 ,  B29C41/12 ,  B29C67/0066 ,  G01F23/2921 ,  G01F23/366 ,  B29K2995/0073 ,  Y10T156/17

    摘要： Improved apparatus and methods for forming a layer of material over a surface of a previously-formed cross-section of a three-dimensional object in anticipation of forming a next cross-section of the object out of the layer. A volume of material, including at least some excess material, is placed over the surface, and the excess material is swept off by placing the excess material in the predetermined path of a sweeping member, the path being substantially in a plane spaced from a working surface of material. The member may be directed to sweep the excess material away through a successive number of sweeps, which may vary for each cross-section, at least a velocity which may vary for each sweep. Additionally, the clearance between the member and the surface of the previous cross-section may vary for each sweep. A "winged" member is also provided, comprising two legs extending from a base, and a "Trident" embodiment is also provided, comprising three legs extending from a base.

    摘要翻译： 改进的用于在三维物体的预先形成的横截面的表面上形成材料层的装置和方法，以期将物体的下一个横截面形成在该层之外。 将一定体积的材料（包括至少一些多余的材料）放置在表面上，并且通过将多余的材料放置在扫掠构件的预定路径中来清除多余的材料，该路径基本上处于与工作 材料表面。 该构件可以被引导以通过连续数量的扫描来扫过多余的材料，该扫描对于每个横截面可以变化，至少每个扫描可能变化的速度。 此外，构件和前一横截面的表面之间的间隙可以针对每个扫掠而变化。 还提供了一个“翼形”构件，其包括从基座延伸的两个腿部，并且还提供了“三叉戟”实施例，其包括从底座延伸的三个腿部。

    Method of and apparatus for making a three-dimensional product by stereolithography
    5.
    发明授权
    Method of and apparatus for making a three-dimensional product by stereolithography 失效
    通过立体光刻制造三维产品的方法和装置

    公开(公告)号：US5174931A

    公开(公告)日：1992-12-29

    申请号：US515479

    申请日：1990-04-27

    申请人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran

    发明人： Thomas A. Almquist ,  Borzo Modrek ,  Paul F. Jacobs ,  Charles W. Lewis ,  Mark A. Lewis ,  Abraham Liran

    IPC分类号： B29C41/12 ,  B29C67/00 ,  G01F23/292 ,  G01F23/36 ,  G05D9/12

    CPC分类号： B29C67/0066 ,  B29C41/12 ,  G01F23/2921 ,  G01F23/366 ,  G05D9/12 ,  Y10T156/17

    摘要： Apparatus and methods for stereolithographically forming a three-dimensional object includes a vessel for holding a building material and a smoothing member for forming a uniform coating over a previously formed layer of the object. The smoothing member has a plurality of blades. The smoothing member is swept over a previously formed layer of the object, in at least two directions. Different clearances between the lower surface of the smoothing member and the upper surface of the previously formed layer are used to provide a uniform coating for a subsequent layer over the previously formed layer. The sweeping velocity of the smoothing member can be varied. Retractable needles are attached to the smoothing member for adjusting a blade gap between the lower surface of the smoothing member and the surface of the building material.

    摘要翻译： 用于立体成像形成三维物体的装置和方法包括用于保持建筑材料的容器和用于在物体的先前形成的层上形成均匀涂层的平滑构件。 平滑部件具有多个叶片。 平滑部件在至少两个方向上扫过物体的先前形成的层。 使用平滑构件的下表面和先前形成的层的上表面之间的不同间隙为先前形成的层上的后续层提供均匀的涂层。 平滑部件的扫掠速度可以变化。 可伸缩针附接到平滑构件，用于调节平滑构件的下表面与建筑材料的表面之间的叶片间隙。