Predictive Maintenance for Quality Control in High Precision Processes

Abstract

In external grinding processes, vibrations induced by the process itself can lead to defects that affect the quality of the parts. The literature offers models that cannot include all process variables in the analysis. This research applies theoretical models and experimental analysis to determine their suitability for predicting the chatter profile of parts in a plunge grinding process. The application of variance analysis to overall vibration value induced by grinding wheel-workpiece contact allows us to show that high frequency displacements vibration are sensitive to the process setup as well as to the quality of the products manufactured. The final statistical analysis has provided a determination of the spectral bands of the process in which the vibrations causes by grinding wheel-workpiece contact influence the existence of flaws in the workpieces. The methodology described can contribute to increasing the environmental sustainability of an industrial organization.