Development of a Water-Based Machining Technology

本研究项目的目标是开发一种“绿色”的水基加工技术。材料的去除将通过超高速水塞冲击工件表面来实现。用水量和材料碎屑量都将降至最低，几乎不会产生任何排放。快速运动的活塞将形成水塞。活塞将撞击装在桶中的水弹，并在水中产生一组压力波。这些波将通过锥形喷嘴将水弹从桶中排出。段塞速度将达到几公里/秒。在这样的速度下，弹状物将穿透大部分工程材料，并将侵蚀几乎任何材料。喷嘴将被集成到机器人机床中，用于精密和无排放加工操作。目前，强压力波对水的加速作用被用于拆除、采矿和军事应用。这项技术将增强可用的信息，并将开发出高速水塞形成的数学模型。模拟的结果将使我们能够建立一个实验室，用于该过程的实验研究。将研究喷嘴内外的水流以及弹状物对衬底的冲击。其结果是，将改进强压力波对流体加速的数学描述，并获得开发所需技术所需的知识。将开发加工系统的工业规模原型的概念设计。

The objective of this research project is to develop a "green" water-based machining technology. Material removal will be carried out by the impingement of the workpiece surface by ultra high-speed water slugs. The water consumption as well as amount of material debris will be minimal and practically no emission will be generated. A fast moving piston will form the water slugs. The piston will impact a water bullet contained in a barrel and will generate a package of pressure waves in water. These waves will expel a water slug from the barrel via a tapering nozzle. The slug velocity will reach several km/sec. At such velocity the slug will penetrate most of the engineering materials and will erode practically any material. The nozzle will be integrated into a robotic workcell and used for the precision and emission free machining operations. Currently, water acceleration by the strong pressure waves is used for demolition, mining and military applications. This technology will enhance available information and will develop a mathematical model of the formation of the high velocity water slugs. The result of the modeling will enable us to construct a laboratory set up for the experimental study of the process. The water flow within and outside the nozzle as well as the slug's impingement on a substrate will be investigated. As the result, the mathematical description of the fluid acceleration by the strong pressure waves will be improved and the knowledge necessary for the development of the desired technology will be acquired. A conceptual design of an industrial scale prototype of the machining system will be developed.