ANALYSIS OF CHARACTERISTICS A SPINDLE UNIT WHEN CHOOSING BEARINGS AND SPINDLE GEOMETRY

The article deals with the task of choosing the supports of the spindle unit when designing a metalworking machine. To analyze condition of rolling bearings in static and dynamics, methods of design modeling were used. Factors that largely determine the static and dynamic characteristics of the spindle unit are identified. The numerical values of deflections in static and the values of amplitudes and frequencies of natural oscillations in dynamics are shown. The best design options for standard supports are proposed, as well as methods for adjusting geometric parameters of the spindle, which provide required static and dynamic characteristics of the spindle unit.