The design and fabrication of a temperature diagnosis system for the intelligent rotating spindle of industry 4.0

Abstract

Nearly all machinery depends on high-speed rotation to convert kinetic energy into output power. However, high-speed rotation generates heat which needs to be removed to prevent operational anomaly. Prolonged overheating will result in decreased accuracy and reliability of the machine and may even cause serious damage. It is therefore valuable to monitor the heat generation in each and every part of a rotating shaft while it is operating. Internal sensors can be installed to determine temperature distribution and measures can be taken to remove heat from places which reach high temperature to prolong the life of the shaft and its precision. However, to measure temperatures in a high-speed rotating body, it is necessary to provide a means of transferring the signal from the sensors to the measuring device because leads cannot be used. This paper describes a temperature measuring device that uses a slip ring to transfer temperature sensor signals from a rotating spindle to the measuring instruments. Successful measurement of the internal temperatures of a rotating component is very useful. In event of a temperature anomaly, an alarm can be given which allows action to be taken to avert both damage to the machine itself and the output of defective production.