ULTRA HIGH SPEED AND PRECISION HYDROSTATIC GRINDING SPINDLE WITH AXIAL OSCILLATION OF THE ROTATING SHAFT

We propose to develop an ultra-high speed hydrostatic spindle with maximum speed of 120,000rpm and combine it with high frequency axial oscillations of about few kilohertz. Ultra-high speed hydrostatic spindle for internal grinding with axial oscillations of rotating shaft effectively combines advantages of hydrostatic spindles with the unique technological potential of high frequency axial oscillations to grind high precision parts made of materials that cannot be ground using conventional grinding process. This technique will also improve significantly productivity and surface quality of machined parts made from other materials as well. Such device was never built before and would represent a quantum leap over an existing technology.