Abstract
A new system is developed to control the ultrasonic elliptical vibration applied to the cutting tool, and it is applied to the ultraprecision elliptical vibration cutting of hardened stainless steel in the present research. Steady feedback control of the vibration locus is realized by developing a cross talk remover, which eliminates interference between the two directional vibrations. The controller keeps the vibration amplitudes and the phase difference between the two vibrations to be desired values and to chase the average resonant frequency of the vibrations simultaneously. The machining experiments show that shape accuracy and roughness of the finished surface are improved significantly by applying the developed system.
