SPINDLE WITH PIEZOELECTRIC ACTUATORS
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United States of America Patent
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Issued Date -
Oct 6, 2022
app pub date -
Apr 17, 2020
filing date -
Jun 14, 2019
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Abstract
Spindle for carrying out machining assisted by non-ultrasonic axial oscillations, including a tool-bearing shaft, and an exciting portion, for subjecting the shaft to non-ultrasonic axial oscillations, especially during its rotation. The exciting portion including a first exciting stage, having at least one piezoelectric actuator, and a second exciting stage, having at least one piezoelectric actuator, having a non-zero axial overlap with the first exciting stage, the actuators of the two stages being arranged so that their effects add.
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