Two-dimensional tool tip vibration measurement method with mirror optical fiber bundles in milling machines

다국어 초록 (Multilingual Abstract)

Tool vibration has great potential harm to the stability and machining accuracy of machine tools. Since the tool tip is in direct contact with the workpiece, as the input and key link to obtain the frequency response function of the tool-spindle system, it is the most direct and important characterization of cutting vibration. In this paper, a method with mirror optical fiber bundles is presented for two-dimensional tool tip vibration measurement. It enables in situ, simultaneous laterally and longitudinally vibration displacement measurement directly without contact to the tool. To validation of the measurement system, a static calibration platform is built, the experiment results show: the laterally and longitudinally linear measurement range of the fiber bundles are 500 µm and 300 µm, respectively, with a measurement accuracy of 1 %.
The dynamic characteristic of the measurement system is evaluated depending on tool tip vibration measurement in the machine start-stop process, as well.

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