SBIR Phase I: Ultrasonic Fluid Probe for Vibration Monitoring of Advanced Machine Tools

这个小型企业创新研究（SBIR）第一阶段项目将开发一种创新的方法，用于测量先进机床的特性以及加工过程中的振动。 该方法使用流体喷射作为探针，这将成为一种准确、鲁棒且低成本的传感器。 对高速铣削的需求不断增长，以及越来越多地使用小尺寸刀具和难以加工的先进材料，要求改善机床的特性，并在加工过程中控制振动和颤振。 为此，先进的机器系统必须依靠精确的传感器来测量和控制振动。 传感器要求：（1）精确的振动测量;（2）不受加工环境的影响;（3）在操作前表征和在铣削过程中监测的双重用途;以及（4）小尺寸和低成本。 迄今为止，市场上销售的传感器不能满足这些要求，而Phase I传感器有望满足大部分需求。作为机床控制系统的一部分，流体探头具有减少机床振动的潜力，从而改善表面光洁度并提高产量。 相同的传感器将用于机床的表征和加工过程中的监测。 流体探针的主要商业市场是机床行业。 加工性能在许多工业领域至关重要，包括汽车、航空航天和快速原型制造。

This Small Business Innovation Research (SBIR) Phase I project will develop an innovative approach for measuring vibration during characterization of advanced machine tools as well as during the machining process. The approach uses a fluid jet as a probe that will make an accurate, robust, and low cost sensor. The growing demand for high-speed milling, as well as increasing use of small size tools and difficult-to-machine advanced materials, call for improved characterization of machine tools and for controlling vibration and chatter during the machining process. To do this, advanced machine systems must rely on accurate sensors to measure and to control vibrations. Sensor requirements are: (1) accurate vibration measurements; (2) impervious to the machining environment; (3) dual use for characterization prior to operation and for monitoring during the milling process; and (4) small size and low cost. To date, commercially available sensors do not meet these requirements, whereas the Phase I sensor is expected to satisfy much of the need.The fluid probe, as part of a machine control system, has the potential to reduce machine tool vibrations, thereby improving surface finish and increasing throughput. The same sensor will be used both for characterization of the machine tools and for monitoring during machining. The principal commercial market for the fluid probe is the machine tool industry. Machining performance is critical in many industrial sectors, including automotive, aerospace, and rapid prototyping.