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Many high-end power machines demand greater bearing performance in terms of running speed, precision, reliability, longevity, noise reduction, etc. An ultrasonic bearing based on Near-Field Acoustic Levitation (NFAL) effect is a kind of emerging noncontact gas bearing. Due to its self-aligning capability, the ultrasonic bearing can steadily run at a high speed under high precision. Actuated by piezoelectric...
Many high-end power machines demand greater bearing performance in terms of running speed, precision, reliability, longevity, noise reduction, etc. An ultrasonic bearing based on Near-Field Acoustic Levitation (NFAL) effect is a kind of emerging noncontact gas bearing. Due to its self-aligning capability, the ultrasonic bearing can steadily run at a high speed — tens of thousands of revolutions per...
Drilling is an essential task in unmanned lunar exploration and future explorations of other planets like mars. The traditional way is to adopt a rotary-percussive drill usually mounted on the side of probe or at the end of a robotic arm on planetary rover. Large penetrating force is needed to cooperate with rotary and percussive motion to overcome hard rock. Under the low-gravity environment, it...
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