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1. 发明授权

US06261077B1 Rapid prototyping apparatus with enhanced thermal and/or vibrational stability for production of three dimensional objects 有权
标题翻译：具有增强的热和/或振动稳定性的快速原型设备，用于生产三维物体
公开(公告)号：US06261077B1
公开(公告)日：2001-07-17
申请号：US09246416
申请日：1999-02-08
申请人： Raymond J. Bishop , Michael A. Everett , Arvind Chari , Timothy A. Ferris
发明人： Raymond J. Bishop , Michael A. Everett , Arvind Chari , Timothy A. Ferris
IPC分类号： B29C3508
CPC分类号： B29C41/46 , B29C64/135 , B29C2791/008 , B29K2995/0073 , B33Y30/00
摘要： A rapid prototyping and manufacturing (e.g. stereolithography) apparatus includes a secondary frame located within a primary frame of the system. The secondary frame defines an enclosure for housing a number of peripheral heat-producing components and peripheral vibration-producing components. The heat generated by these peripheral heat-producing components is substantially isolated in the enclosure and is removed from the primary frame so as not to cause an undesired impact on other components within the main frame. The secondary frame preferably sits directly on the floor or other surface without touching the primary frame, thus substantially avoiding transmittance of vibration from components in the enclosure to the primary frame of the system.
摘要翻译：快速原型制造（例如立体光刻）装置包括位于系统的主框架内的辅助框架。辅助框架限定了用于容纳多个周边发热部件和周边振动产生部件的外壳。由这些外围制热部件产生的热量在外壳中基本隔离，并从主框架上移除，以免对主框架内的其他部件造成不希望的冲击。辅助框架优选地直接位于地板或其他表面上而不接触主框架，从而基本上避免振动从外壳中的组件到系统的主框架的透射。

2. 发明授权

US06241934B1 Stereolithographic method and apparatus with enhanced control of prescribed stimulation production and application 有权
标题翻译：具有增强的规定刺激生产和应用控制的立体光刻方法和装置
公开(公告)号：US06241934B1
公开(公告)日：2001-06-05
申请号：US09247120
申请日：1999-02-08
申请人： Michael A. Everett , Ross D. Beers
发明人： Michael A. Everett , Ross D. Beers
IPC分类号： B29C3508
CPC分类号： G05B19/4099 , B29C64/135 , B29K2995/0073 , B33Y10/00 , B33Y30/00
摘要： A rapid prototyping and manufacturing (e.g. stereolithography) method and apparatus for producing three-dimensional objects by selectively subjecting a liquid or other fluid-like material to a beam of prescribed stimulation. In a preferred embodiment a source of prescribed stimulation is controlled to reduce or inhibit the production of the prescribed stimulation during at least some periods when the prescribed stimulation is not needed to expose the material. In another preferred embodiment, the source of stimulation is controlled to vary the quantity of prescribed stimulation that is produced and allowed to reach the material. In an additional preferred embodiment control of laser output occurs based on a combination of supplying a regulated amount of voltage to an AOM in conjunction with temporary sensing of laser power and a known desired power to attain. In a further preferred embodiment, a quantity of prescribed stimulation may be set by consideration of desired solidification depths to be used, beam profile characteristics, material properties, and scanning speed limitations for different data types. In a still further preferred embodiment, a transition between selected consecutive exposure vectors is performed by scanning one or more interposed non-exposure vectors with the beam inhibited from reaching the building material.
摘要翻译：用于通过选择性地使液体或其它流体状材料经受规定刺激的波束来制造三维物体的快速成型和制造（例如立体光刻）方法和装置。在优选实施例中，在不需要规定的刺激以暴露材料的至少一些时期期间，控制规定刺激源以减少或抑制规定的刺激的产生。在另一优选实施例中，控制刺激源以改变产生并被允许到达材料的规定刺激的量。在另外的优选实施例中，激光输出的控制基于将调节量的电压提供给AOM并结合临时感测激光功率和已知的所需功率来实现的组合。在另外的优选实施例中，可以通过考虑要使用的期望凝固深度，束轮廓特性，材料特性和不同数据类型的扫描速度限制来设定规定刺激的量。在另一个优选实施例中，通过扫描一个或多个插入的非曝光向量，阻止所述光束到达建筑材料，来执行所选择的连续曝光向量之间的转变。

3. 发明授权

US06406658B1 Stereolithographic method and apparatus for production of three dimensional objects using multiple beams of different diameters 有权
标题翻译：用于使用多个不同直径的光束生产三维物体的立体光刻方法和装置
公开(公告)号：US06406658B1
公开(公告)日：2002-06-18
申请号：US09248352
申请日：1999-02-08
申请人： Chris R. Manners , Michelle D. Guertin , Hop D. Nguyen , Jouni P. Partanen , Nansheng Tang , Michael A. Everett
发明人： Chris R. Manners , Michelle D. Guertin , Hop D. Nguyen , Jouni P. Partanen , Nansheng Tang , Michael A. Everett
IPC分类号： B29C3508
CPC分类号： B29C64/40 , B29K2995/0073 , B33Y10/00 , B33Y30/00
摘要： A rapid prototyping and manufacturing (e.g. stereolithography) method and apparatus for making three-dimensional objects on a layer by layer basis by selectively exposing layers of material to prescribed stimulation, using a beam having a first smaller diameter and a beam having a second larger diameter, to form laminae of the object. The power of the smaller beam is typically lower than the power of the larger beam. Object formation is controlled by data representing portions of the layers to be exposed with the larger beam (large spot portions) and those portions to be exposed with the smaller beam (small spot portions). In a preferred embodiment, portions exposed with the larger beam are formed first, for a given layer. Portions are exposed with the small beam next. Thereafter the entire perimeter of the laminae is traced using the small beam. Data manipulation techniques are used to identify which portions may be formed with the large beam to decrease exposure time and which should be formed with the small beam to maintain accuracy of the lamina being formed. More than two beam diameters may be used.
摘要翻译：通过使用具有第一较小直径的光束和具有第二较大直径的光束来选择性地将材料层暴露于规定的刺激，来快速制作（例如立体光刻）方法和装置，用于逐层地制造三维物体，形成物体的薄片。较小波束的功率通常低于较大波束的功率。物体形成由表示要用较大光束（大光斑部分）曝光的层的部分的数据和要用较小光束（小光斑部分）曝光的部分的数据控制。在优选实施例中，对于给定层，首先形成用较大光束暴露的部分。接下来的部分暴露在小梁上。此后，使用小梁追踪薄片的整个周边。使用数据处理技术来识别可以用大光束形成哪些部分以减少曝光时间，并且应该用小光束形成哪些部分以保持形成的薄片的精度。可以使用两个以上的光束直径。

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