The digital twin model of the spindle unit

Abstract

The spindle system of any machine tool directly and significantly influence on the efficiency of machining. The dynamic characteristics of the spindle unit during machining are almost impossible to visualize in real time with traditional methods. The use of a digital twin of the spindle unit allows to determine the actual dynamic characteristics with a sufficiently high degree of accuracy. The key component of the digital twin of the spindle unit is its model. It is a set of digital models that describe its design, technological, operational, parameters and physical and mechanical processes that occur during the operation of the spindle unit in real time. The structure, list of characteristics of the digital twin model of the intelligent spindle unit are determined. The stages of its model creation are given, the tasks to be solved at these stages are specified. Building a model of a digital twin of a spindle unit has a two-directional character and cannot be considered a fully completed process, since the model of a digital twin of a spindle unit will be constantly refined and updated until the spindle unit is out of service. High-precision modeling, model integration, model verification, model consistency, mechanisms of functioning and evolution of models - are key issues, that need to be solved when creating a model of a digital twin of a spindle unit.