Roll grinding wheel spindle using a short three-watt dynamic pressure bearing, three fan-shaped bearing supported by the spherical pin

Roll grinding wheel spindle using a short three-watt dynamic pressure bearing, three fan-shaped bearing supported by the spherical pin, evenly distributed in the shaft, around. When the spindle rotates under the action of the fluid, each about three  cubic boron nitride  ball bearing screws swing to the equilibrium position, and the formation of three wedge-shaped gap, in which the oil pressure is generated at the wedge gap, so that the spindle  cutting tools  in three middle. When the spindle by the external load and wish to generate a radial offset, the gap becomes  Synthetic diamond  as the wedge chamber and cause the oil pressure, at the same time, the wedge-shaped gap in the reverse direction becomes large, the oil film pressure decreases, so that in the radial plane as the uneven leaving the spindle back to the center position to produce a trend.