Ring type standing-wave ultrasonic motor vibrator of cantilever bending vibration transducer
An ultrasonic motor and transducer technology, applied in the direction of generator/motor, piezoelectric device/electrostrictive device, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problem of piezoelectric ultrasonic motor electromechanical Low coupling efficiency, restricted mechanical output capability, poor mechanical output capability, etc., to achieve the effect of simple structure, high electromechanical coupling efficiency, and stable performance
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specific Embodiment approach 1
[0009] Specific embodiment one: combination Figure 1 to Figure 3 To illustrate this embodiment, the toroidal standing wave ultrasonic motor vibrator of the cantilever bending vibration transducer includes a ring 1-1 and a cantilever bending vibration sandwich transducer 10, and the upper end surface of the ring 1-1 is evenly distributed. Comb-shaped driving teeth 1-5, the inner side of the ring 1-1 is processed with a thin-walled ring 1-2, the inner side of the thin-walled ring 1-2 is processed with a flange 1-3, the ring 1-1, the thin-walled ring 1-2 and the flange 1-3 coaxial, the cantilever bending vibration sandwich transducer 10 includes a cantilever 1-4, a front end cover 3, a rear end cover 4, an insulating sleeve 6, two pairs of bending vibration piezoelectric ceramic sheets 2, a fastening screw 5 and Electrode sheet 7, the front end cover 3, the rear end cover 4 and the cantilever 1-4 are all rectangular parallelepiped, the cantilever 1-4 is fixedly connected to the l...
specific Embodiment approach 2
[0010] Specific implementation mode two, combination Figure 4 To describe this embodiment, the difference between this embodiment and the toroidal standing wave ultrasonic motor vibrator of the cantilever bending vibration transducer described in the first embodiment is that each bending vibration piezoelectric ceramic sheet 2 is polarized in the thickness direction. Each flexural vibration piezoelectric ceramic sheet 2 is symmetrically divided into an upper half 2-1 and a lower half 2-2. The polarization directions of the two flexural piezoelectric ceramic sheets of the pair of flexural vibration piezoelectric ceramic sheets 2 are opposite, The polarization modes of the two pairs of flexural vibration piezoelectric ceramic sheets 2 are opposite.
[0011] In this embodiment, the polarization modes of the two pairs of bending vibration piezoelectric ceramic sheets 2 are opposite, and the polarization directions of the bending vibration piezoelectric ceramic sheets 2 at the same po...
specific Embodiment approach 3
[0012] Specific embodiment three. The difference between this specific embodiment and the present embodiment described in specific embodiment one and the cantilever bending vibration transducer described in specific embodiment one is that the difference between the vibrator of the toroidal standing wave ultrasonic motor is that the bending vibration The cross section of the piezoelectric ceramic sheet 2 is rectangular.
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