ULTRA-PRECISE MACHINING AND METHOD APPLIED TO THE EXECUTION OF ATYPIC REVOLUTION SURFACES AND TO SERVO-CONTROL MACHINING

摘要

according to the machining process of ultra precise surface of revolution (240) on a part (204) held in position with the aid of a spindle rotor piece (1) is mounted by means of an active magnetic bearing slide (202), we adjust the frequencies of slaves increased levels of less than about 80 hz.and the speed of rotation of the rotor to a value of from 20 to 75 hz, we selectively modifies the radial and axial positions of the rotor of the spindle (1) relative to a nominal position by applying to the control circuits of the magnetic bearings for reference voltage change inspection according to control signals supplied by the position of the tool (207).and it inhibits the movement of the slide (202) when the control signals are lower than the values determined. application in particular to the machining of surfaces of revolution by copying from a standard template.