Practical Aspects of Ensuring Accuracy of Machining on CNC Machine Tools within Framework of “Smart Manufacturing”

The paper presents practical aspects of insuring the accuracy of manufacturing parts on CNC machine tools operating in "Smart manufacturing". A model is described that reflects quantitative and logical relationships between variables that characterize the state of controlled parameters of technological operations. The concept of preventive maintenance of machine tools based on operational monitoring of their condition is presented. This allows, on the one hand, to avoid unexpected downtime of equipment because of breakdowns. On the other hand, it means a more reasonable approach to planning preventive maintenance of equipment operability. The concept of the information system for the predicted maintenance of process equipment is based on the model of correspondence between the characteristics obtained from external measuring instruments (fixed at the commissioning stage) and measurements obtained from the equipment diagnostics tools, integrated into the control system, during its operation.