Patent ID: 6202521
Filing Date: 2001-03-20
Classification: B23Q,G05B,Y10S,Y10T

Abstract:
An apparatus for machining of a non-circular profile on a work piece, the work piece being positioned in the apparatus and having an axis of rotation, said apparatus comprising:(a) a first position sensor and a second position sensor for deriving position signals correlated with a rotational position of the work piece in the apparatus;(b) a vibrating tool assembly further comprising;(i) a rigid tool block,(ii) a tool holder including first and second ends defining a longitudinal axis, said tool holder mounted to said block at said first end and adapted to receive a machine tool at said second end, said tool holder including an integral spring member for providing relative ease of movement at said second end of said tool holder in a transverse direction, said longitudinal axis of said tool holder being disposed substantially parallel to said axis of rotation, and(iii) an actuator arranged to impart vibrational motions to said tool holder along said transverse direction,(c) a control system for receiving said position signals and generating an output signal to said actuator, said control system including;(i) means for adjusting a magnitude and phase of said position signals and producing a magnitude and phase adjusted output signal, and(ii) an amplifier for amplifying said magnitude and phase adjusted signal; andwherein said means for adjusting adjusts the magnitude and phase of said position signals to produce a magnitude and phase adjusted output signal that provides a non-circular profile on the work piece, the non-circular profile having minimum and maximum dimensions in desired positions relative to the rotational position of the work piece and a desired amount of ovality.