Development of a measurement system for high-speed spindle displacement

At present many research projects on high-speed spindles are being conducted. These projects require a measurement technique which includes heat expansion, vibration and displacement measurement according to angular velocity. This paper presents the development of a measurement system for high-speed spindle displacement. The measurement system is based on LabViewreg of National Instruments Corporation and features the following sensors: optical sensor which reacts to the position of a marker on the spindle and enables two laser displacement sensors(LDS). These laser displacement sensors send their data to a DAQ (data acquisition device). It is important that the delay time caused by the response times of the sensors as well as the sampling rate of the DAQ is considered because the spindle revolves at very high speeds.