发明名称 |
ULTRASONIC LINEAR DRIVE UNIT COMPRISING A HOLLOW CYLINDRICAL OSCILLATOR |
摘要 |
The invention relates to an ultrasonic linear drive unit comprising a driving element as an ultrasonic oscillator with two generators for ultrasonic vibrations and a driven element that forms a frictional contact with the driving element, and an electrical excitation source for the driving element. According to the invention, the ultrasonic oscillator is designed as a hollow thin-walled piezoelectric cylinder, the height H of which is identical to or smaller than the mean diameter D thereof. The generators for ultrasonic vibrations are symmetrically disposed on both sides relative to the sectional plane S that extends through the center of the height of the ultrasonic oscillator, perpendicular to the longitudinal axis L thereof. The cylinder surface of the driving element is in contact with the driven element, and the electrical excitation source is connected to the ultrasonic linear drive unit in such a way that the drive unit excites only the first or the second generator for ultrasonic vibrations. |
申请公布号 |
WO2009059939(A2) |
申请公布日期 |
2009.05.14 |
申请号 |
WO2008EP64847 |
申请日期 |
2008.11.03 |
申请人 |
PHYSIK INSTRUMENTE (PI) GMBH & CO. KG;WISCHNEWSKIJ, WLADIMIR;WISCHNEWSKIJ, ALEXEJ |
发明人 |
WISCHNEWSKIJ, WLADIMIR;WISCHNEWSKIJ, ALEXEJ |
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