SBIR Phase I: Fast Freeform Fabrication Using Planar Layer Deposition Techniques

SBIR 第一阶段：使用平面层沉积技术的快速自由成型制造

• 批准号: 9860715
• 负责人: John Lombardi
• 金额: $ 9.4万
• 依托单位: Sensintel Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9860715&HistoricalAwards=false
• 关键词: SBIR; Phase; Fast; Freeform; Fabrication

9860715 This Small Business Innovation Research (SBIR) Phase I project will develop a planar layer deposition system for freeform fabricating three-dimensional design prototypes. The planar layer is generated by a container equipped with an adjustable planar nozzle consisting of one or two slotted plates regulated by a motorized position-controlling device of micrometer resolution. The slotted plates are assembled such that they slide over one another, enabling the nozzle opening to be adjusted, as needed, from fully open to completely closed. The nozzle can therefore form a semi-solidified sheet of desirable width, which undergoes rapid solidification after deposition on a substrate. This forms an incremental deposit that contributes toward the final product structure. The extrusion properties of this system will be tested by making prototypes from a variety of waxes. By extruding planar layers instead of depositing or curing material, a single bead or beam width at a time, this approach for rapid prototyping components could have build-times a hundred fold less and thus enable solid freeforming in low-volume manufacturing as well as the prototyping process. The continuing need to reduce product cycle time requires shorter prototyping time. Most freeform fabrication schemes, however, are complex and slow, making production rates slow and production runs unattractive, particularly for large parts. This new freeform technology is expected to fabricate high-strength and high-temperature precision metal and ceramic parts. Being much simpler and faster than the current freeform fabrication technology, it would decrease product development cost and cycle times. It may also used in large-scale and controlled manufacturing of advanced materials and structures for aeronautic and space applications.

9860715 这个小型企业创新研究 (SBIR) 第一阶段项目将开发一种平面层沉积系统，用于自由形式制造三维设计原型。 平面层由配备有可调节平面喷嘴的容器生成，该喷嘴由一个或两个开槽板组成，由微米分辨率的机动位置控制装置调节。 开槽板被组装成彼此滑动，从而能够根据需要调节喷嘴开口，从完全打开到完全关闭。 因此，喷嘴可以形成具有所需宽度的半固化片，该半固化片在沉积到基底上之后经历快速固化。 这形成了有助于最终产品结构的增量存款。 该系统的挤出性能将通过用各种蜡制作原型来测试。 通过挤压平面层而不是沉积或固化材料，一次单个珠子或梁宽度，这种快速原型制作组件的方法可以将构建时间缩短一百倍，从而实现小批量制造中的固体自由成型以及原型制作过程。 减少产品周期时间的持续需求需要更短的原型制作时间。 然而，大多数自由曲面制造方案既复杂又缓慢，导致生产率缓慢且生产缺乏吸引力，特别是对于大型零件。 这种新的自由成型技术有望制造高强度、高温精密金属和陶瓷零件。 比当前的自由成型制造技术更简单、更快速，它将降低产品开发成本和周期时间。 它还可用于航空和航天应用的先进材料和结构的大规模和受控制造。