超声波悬浮推力轴承承载能力及减摩性能

在对超声悬浮及减摩理论进行分析和研究的基础上,提出了一种新型的轴承———超声波悬浮轴承,将超声振动用于轴颈的悬浮支承与动压润滑以构造滑动轴承。本文对压电换能器辐射端面与其上被悬浮物体之间的悬浮间隙的测量以及超声波轴承的减摩性能进行了研究,并与普通的滑动轴承和滚动轴承进行了对比。结果表明,超声振动具有悬浮能力,转速一定的条件下幅射端振动幅越大,悬浮间隙越大。超声波轴承减摩性能优于其他轴承。

Bearing capacity and anti-friction behavior of ultrasonic vibration bearing

Based on the study on the ultrasonic vibration suspension and the anti-friction theory,a new kind of bearing-ultrasonic vibration suspension bearing was suggested which uses the ultrasonic vibration to form the suspended support and the dynamic pressure lubrication.The suspended clearance between the radiation surface of the piezoelectric ceramic vibrator and the suspended object was measured and the friction coefficient of the bearing was investigated.The performance of the ultrasonic bearing was compared with that of the traditional plain bearing and rolling bearing.Results show that ultrasonic vibration has the ability of suspending object.Under constant revolutions per minute,the bigger the vibration amplitude of the radiation surface,the bigger the suspended clearance.The anti-friction behavior of the ultrasonic vibration bearing is better than that of other bearings.