Investigation of Downtime Behaviour of CNC Machines: Time Series Models

The emergence of advanced manufacturing technologies such as Flexible Manufacturing Systems (FMS) is forcing organisations to re‐examine their manufacturing strategies. CNC machines are an integral part of FMS. The literature dealing with the downtime behaviour of these machines is sparse. The purpose of this article is to analyse the behaviour and forecast downtimes of these machines using Box‐Jenkins time series analysis. It is concluded that the models fitted to the data are appropriate, and the results of this study can be used in production planning.