A Differential Light Intensity-Modulation Optical Fiber Bundles Designed for Milling Tool Vibration Measurement

Tool vibration occurs widely in various machining operations and is one of the main factors affecting quality stability. Light intensity-modulation optical fiber displacement sensor has distinctive advantages greatly potential tool measurement. In order to overcome shortages conventional reflective light intensity modulation bundle small measurement range or low sensitivity, a novel differential light-intensity bundles were proposed for measuring high-speed milling displacement. The mathematical model was demonstrated based on principle sensing characteristics analyzing this paper, firstly; then, static calibration platform dynamic experiment established verify characteristic bundles; end, results shown that more than 2mm, which expanded by two times while improving sensitivity obviously. experimental confirm operating well. It availability applied on-line precision machines.