Dynamic Definition of Machine Tool Feed Drive Models in Advanced Machine Tools

摘要

Machine tools in actual construction, being related to the trend towards to machine tools of high productivity and increased precision and having in view the context of transition to Industry 4.0, have to be studied deeply in the stage of conception and also in that of exploiting. For both situations, the modeling and simulation of the machine tool regarded as a mechatronic system represent methods of analysis, assessment, and optimization for its improvement. This work proposes the approaching the subject from the point of view of modeling and simulation of one assembly of the machine tool that proves one of the most sensitive kinematic structure responsible for the machine tool precision. The modeling, either Rigid Body Simulation, Digital Block Simulation, Finite Element Modeling or combinations types, implies a concrete and accurate definition of the dynamic parameters stiffness, damping, and friction. Some mathematical approaches for determining these parameters are presented. Also, some product catalog values and relations coming from the engineering and research experience applied to feed drive components and also to the whole kinematic chain are given. Furthermore, some practical testing and calculation methods are presented.