DYNAMICS OF HIGH-SPEED SPINDLE BLOCKS OF HEAVY MACHINE EQUIPMENT

The paper notes the importance of automatic control of hydrostatic bearings when computing the dynamics of a system, taking into account the influence of the changing energy parameters in a pad, especially during the finishing operations which are carried out on the machine-tool. Dynamics of hydrostatic bearings in view of the influence of the specified parameters is investigated. Calculations for different regimes of the spindle unit of the serial heavy manufacturing module with a sliding spindle are executed by the method of successive approach with the help the developed programs. The dynamics of hydrostatic bearings with various options of control systems is considered. The graphic-analytical method of determining the parameters of RC-correction for enhancing the dynamic quality of the system of automatic control is developed. The analysis of dynamics and recommendations about the development of technological modes at moving out of the spindle with holders of different mass at the largest frequency of rotation are made.