Patent UA-72698-U (UA)
Title: Combined spindle bearing on permanent magnets
Inventor: HRYTSENKO VOLODYMYR ILLICH
IPC: F16C32/06
Filed: 2012-02-20
Abstract: A combined spindle bearing on permanent magnets includes force magnetic suspensions, sensors of values of gaps, balancing loads, rolling bearings, block for selection of non-shift position and balancing of the shaft of the combined spindle bearing on permanent magnets. The shaft of the combined spindle bearing on permanent magnets is arranged as component of three installed coaxially shafts with same diameters, on the middle shaft by its ends in cross sections by B-B and G-G of the combined spindle bearing in the screens magnets of the shaft are installed as short hollow cylinders with poles at the outer and the inner side surfaces, in that very cross sections in the body of the combined spindle bearing by axes of the coordinate systems XBOBYB and XGOGYG symmetrically to the axes of those coordinate systems groups of force magnetic repulse units are installed as three connected in parallel force magnetic repulse units in each group, each force magnetic repulse unit includes a magnet of a force magnetic repulse unit installed to a screen, this with the open pole is turned to the same pole of the shaft magnet, a control screw, and between the control screw and the magnet of the force magnetic repulse unit in insulator a piezoelectric engine is installed, the force magnetic repulse units installed in the section by B-B of the combined spindle bearing and the magnet of the shaft in that cross section, and the force magnetic repulse units that are installed in the cross section by G-G of the combined spindle bearing and the magnet of the shaft in that very cross section form two force magnetic suspensions of the component shaft of the combined spindle bearing on permanent magnets, in cross sections by A-A and B-B of the combined spindle bearing by half-axes +X, +Y, +X, +Yof coordinate systems XOYand XOYindicators of values of gaps between the bases of sensors and the end shafts of the component shaft of combined spindle bearing are installed, the end shafts of the component shaft are installed to rolling bearings installed in the flanges attached to the body of the spindle bearing, between indicators of the values of gaps and rolling bearings in cross sections by D-D and E-E of the combined spindle bearing in the end shafts of the component shaft of the combined spindle bearing balancing loads are installed, block for selection of not displaced position and balancing of combined spindle bearing on permanent magnets includes sensors of the values of gaps, gap value measuring devices, measuring device for the angle of turn of the component shaft of the combined spindle bearing, calculator, operational amplifiers, switches “more-off-less”, switches “on-off”, groups of force magnetic repulse units, at that the sensors of the values of gaps are electrically connected to the groups of force magnetic repulse units, at that the sensors of the values of gaps are connected to the inputs of the gap value measuring devices, and the outputs of those are connected to the inputs of the calculator, output of the measuring deice for angle of shaft turn is connected to the input of calculator, the outputs of the calculator are connected to the inputs of pairs of operational amplifiers and the outputs of those through the switches “direct-off-reversed” are connected to the inputs of the first, second, third and fourth differential amplifiers, the output of the first differential amplifier through a switch “on-off” is connected to the groups of force magnetic repulse units installed by axis Y of the coordinate system XBOBYB, the output of the second differential amplifier through a switch “on-off” is connected to the groups of force magnetic repulse units installed by axis X of the coordinate system XBOBYB, the output of the third differential amplifier through a switch :”on-off” is connected to the groups of force magnetic repulse units installed by axle Y of the coordinate system XGOGYG, output of the fourth differential amplifier through a switch “on-off” is connected to the groups of force magnetic repulsion units installed by axle X of the coordinate system XGOGYG.