Vibration monitoring and analysis of machine tools are carried out in industry to reduce maintenance cost and downtime. In this case study, the application of vibration monitoring and analysis was carried out on a lathe. The characteristic frequencies of tapered roller bearings, gear mesh frequencies, and belt drive frequencies were found to locate the source of vibration. Multi-harmonics of fundamental defect frequencies were observed. From the real-time observation, experimental prediction of defects has been found to be correct and accurate. This case study shows that vibration analysis plays a vital role in monitoring the condition of the machine tool.
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