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    • 8. 发明授权
    • Process of fabricating a three-dimensional object from a light curable
liquid resin
    • 从光固化液体树脂制造三维物体的工艺
    • US5503793A
    • 1996-04-02
    • US300570
    • 1994-09-06
    • Yoshiyuki UchinonoYoshikazu Higashi
    • Yoshiyuki UchinonoYoshikazu Higashi
    • B29C35/08B29C41/12B29C67/00B29K105/24B29C41/02
    • B29C67/0062B29C41/12
    • A three-dimensional object is fabricated from a light curable liquid resin by repeating the following process to superimpose a plurality of cured resin layers. The process utilizes a vessel containing a volume of the liquid resin and a vertically movable platform. In the process, the platform is immersed in the liquid resin in the vessel to dispose an overlay surface of an immediately previously cured layer sufficiently below the liquid level of the liquid resin. The platform is then raised such that the overlay surface is slightly higher than the liquid level of the liquid resin in the vessel, while keeping the liquid resin on the overlay surface connected with the surrounding liquid resin in the vessel by the effect of surface tension acting on the liquid resin. An excess amount of the liquid resin on the overlay surface is removed to form a liquid resin layer having a desired thickness. The platform is lowered such that an upper surface of the liquid resin layer is substantially in flush with the surrounding liquid level in the vessel, while keeping the desired thickness of the liquid resin layer. A light is then radiated to the liquid resin layer so as to cure it into the cured resin layer.
    • 通过重复以下处理来叠加多个固化树脂层,由光可固化液体树脂制造三维物体。 该方法利用容纳液体树脂的容器和可垂直移动的平台。 在该过程中,将平台浸入容器中的液体树脂中,以将刚刚预先固化的层的覆盖表面设置在液体树脂的液面以下。 然后将平台升高使得覆盖表面略高于容器中液体树脂的液面,同时通过表面张力作用将液体树脂保持在与周围液体树脂连接的覆盖表面上 在液体树脂上。 除去过量的覆盖表面上的液体树脂以形成具有所需厚度的液体树脂层。 降低平台,使得液体树脂层的上表面与容器中的周围液面基本齐平,同时保持液体树脂层的期望厚度。 然后将光照射到液态树脂层,使其固化成固化树脂层。