Petryshyn A. Increasing of information capability of the dynamical condition monitoring systems of the metal-cutting tools spindle units

Theoretical and practical problem of increasing of information capability of the dynamical condition monitoring systems of the metal-cutting tools spindle units has been solved by using method of indirect measurement of spindle vibrations due to obtaining of the theoretical adherence function of spindle and spindle body vibrations, and based on this - developing of the indirect vibration measurement method. Spindle unit dynamic models for different kitting and algorithms for their main dynamical characteristics calculation (natural frequencies and modes, dynamic compliance) have been developed. Modeling of spindle unit dynamical characteristics has been performed. , Regularities of their forming depending on design, kitting and mounting conditions of the spindle unit have been established. Test rig for spindle unit dynamical behavior research in the low-frequency region with using common vibration-measurement equipment has been performed. Both theoretical and experimental method of spindle unit vibration determination using results of the spindle body vibration measurements and modeled adherence functions of these vibrations has been developed. Recommendations on current method usage for identification of manufacturing and assembling errors and spindle unit rotation accuracy estimation in low-frequency range has been developed