Temperature Measurement in Grinding Using Infrared Sensors

本项目的目标是利用红外传感器测量磨削过程中的温度。陶瓷和其他硬质材料的精密加工主要通过金刚石和立方氮化硼(CBN)磨削进行。砂轮和工件中产生的高温对表面完整性、加工表面的机械和物理性能以及砂轮磨损都有很大的影响，因此引起了人们的广泛关注。研究表明，精确测量这些温度是非常必要的。该项目旨在使用新型铟-锑红外传感器测量精密磨削和缓进给磨削中的砂轮和工件温度。该传感器是非接触式的，具有出色的频率响应，非常适合测量甚至是瞬变温度。通过检测砂轮周围的切削点温度，提出了自适应控制磨削损伤和砂轮磨损(砂轮几何误差)的新方法。后者将实现自动化磨削系统中砂轮误差的在线补偿。此外，通过研究不同磨削液对砂轮温度的影响，该传感器可用于定量、快速地评价磨削液的性能。红外传感器还为其他机械加工和摩擦学领域的温度测量提供了巨大的潜力。

The objective of this project is temperature measurement in grinding using infrared sensors. Precision machining of ceramic and other hard materials is predominantly carried out by Diamond and Cubic Boron Nitride (CBN) grinding. The high temperatures produced in the grinding wheel and workpiece is a topic of considerable interest because of its significant influence on the surface integrity, the mechanical and physical properties of the finished surface and wheel wear. A critical need is shown to exist for precise measurement of these temperatures. This project is directed towards measurement of wheel and workpiece temperatures in fine grinding and creep feed grinding using a new Indium-Antimonide infrared sensor. This sensor is of the non-contact type and has an excellent frequency response that is uniquely suited to measure even transient temperatures. By sensing the temperature of cutting points around the wheel, novel methods for adaptive control of thermal grinding damage in the workpiece and detection of wheel wear (wheel geometric errors) are proposed. The latter will enable in-process compensation of wheel errors in automated grinding systems. Besides, by studying the effect of various grinding fluids on wheel temperature, this sensor can be used to quantitatively and rapidly evaluate the performance of grinding fluids. The infrared sensor also offers enormous potential for temperature measurements in other machining and tribological situations.