Method of controlling elliptical vibrator
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United States of America Patent
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Aug 17, 2004
Grant Date -
Aug 29, 2002
app pub date -
Feb 21, 2002
filing date -
Feb 23, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An elliptical vibratory cutting apparatus includes a control mechanism which applies a sinusoidal voltage having a predetermined phase difference to piezoelectric elements. Flexure vibrations are accordingly generated in X and Y directions. The vibrations in the X direction cause interference with the vibrations in the Y direction and vice versa. An amount of interference, caused by vibrations in one direction, with vibrations in another direction, is correctively eliminated by the control mechanism (interference eliminating unit. A workpiece is thus cut by means of a cutting tool through elliptical vibrations with high precision.
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