ULTRA-PRECISE MACHINING METHOD AND DEVICE APPLIED TO THE EXECUTION OF ATYPICAL REVOLUTION SURFACES AND TO ASSERTED MACHINING

摘要

P ACCORDING TO THE ULTRA-PRECISE MACHINING PROCESS OF A REVOLUTION SURFACE 240 ON A PIECE 204 MADE IN POSITION USING THE ROTOR OF A PIECE ROD 1 MOUNTED THROUGH ACTIVE MAGNETIC BEARINGS ON A 202 SLIDE, THE CLEAR FREQUENCIES OF LOADING OF BEARINGS AT VALUES BELOW 80 HZ ARE ADJUSTED, AND THE ROTATION SPEED OF THE ROTOR AT A VALUE OF 20 TO 75 HZ, CHANGES SELECTIVE POSITIONS RADIALE AND AXIAL OF THE ROTOR OF THE PIN 1 WITH RESPECT TO A NOMINAL POSITION BY APPLYING TO THE CONTROL CIRCUITS OF THE MAGNETIC BEARINGS OF VARIABLE REFERENCE VOLTAGES AS A FUNCTION OF CONTROL SIGNALS ISSUED ACCORDING TO THE POSITION OF THE TOOL 207, AND WE INHIBIT THE DISPLACEMENT OF THE SLIDER 202 WHEN THE CONTROL SIGNALS ARE LESS THAN DETERMINED VALUES. / P P APPLICATION IN PARTICULAR TO THE MACHINING OF ATYPICAL REVOLUTION SURFACES BY RECOPIA FROM A TEMPLATE. / P