State of the art and optimization of the energy flow in cooling systems of motorized high-speed spindles in machine tools

摘要

In high-speed cutting thermo-elastic deformations of machine tool structures and motor spindles are main causes for manufacturing inaccuracies because they lead to a TCP displacement. Therefore, cooling systems are essential for controlling thermo-elastic properties. The paper describes different cooling system designs of motor spindles. Their thermal energy flow is analyzed by CFD simulation, and measures improving the heat rejection are discussed. For future work, such models will be integrated into a virtual machine tool that enables the estimation/control of the machines' thermal behavior.