The results of the experimental research on the dynamic behavior of the spindle unit of the single spindle longitudinal automatic lathe is described in this paper.
The state vector methd of cross-section and modal analysis methd are used to identify the support and modal parameters of the spindle unit of the single spindle longitudinal automatic lathe mod.
Essential shape of the small turning shaft parts is analysed, the united mathematical model is put forward and applied to describing these parts longitudinal automatic single spindle lathe.