Longitudinal-shaking sandwich energy converter type cylinder type birotor ultrasonic motor
A technology of ultrasonic motors and transducers, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. Problems such as poor output capability and low electromechanical coupling efficiency can achieve the effects of eliminating adverse effects, simplifying the structure, and improving controllability
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specific Embodiment approach 1
[0010]Specific embodiment 1: Referring to Fig. 1 to Fig. 11, this embodiment consists of a stator assembly 1, an inner rotor assembly, an outer rotor assembly, a bearing seat 4, a bearing 5, a bearing preload end cover 6, a second screw group 7 and a third screw group 8; the stator assembly 1 is composed of a drive cylinder 1-6 and 2n longitudinal vibration sandwich transducers 1-7, wherein n is a natural number greater than 1, and the 2n longitudinal vibration sandwich transducers 1 -7 is symmetrically distributed and fixedly connected outside the side wall of the drive cylinder 1-6, and the longitudinal vibration sandwich transducer 1-7 is composed of a front end cover 1-6-2, a rear end cover 1-1, and an insulating sleeve 1- 2. It consists of two pairs of piezoelectric ceramic sheets 1-3, flanges 1-4 and two pairs of copper electrode sheets 1-5. The front end cover 1-6-2 and the rear end cover 1-1 are both rectangular in cross section and A tapered quadrangular prism, the ce...
specific Embodiment approach 2
[0012] Specific embodiment two: Referring to Fig. 5, the difference between this embodiment and specific embodiment one is that the cylinder 1-6-1, the front end cover 1-6-2, the thin-walled ring 1-6-3 and the cylinder method The flange 1-6-4 is processed from a whole piece of metal material into an integral part of the drive cylinder, and the cylinder flange 1-6-4 is processed with several evenly distributed threaded holes 1-6-6, and the threaded holes 1 -6-6 is parallel to the output shaft of the inner shafted rotor 2-1.
[0013] In this embodiment, the cylinder 1-6-1, the front end cover 1-6-2, the thin-walled ring 1-6-3 and the cylinder flange 1-6-4 are processed into one component, which can reduce energy The purpose of the loss is beneficial to improve the controllability of the vibration trajectory of the surface particle of the drive tooth 1-6-5; the threaded hole 1-6-6 can be used to realize the installation of the motor in the mechanical system.
specific Embodiment approach 3
[0014] Specific embodiment 3: Referring to Fig. 4, the difference between this embodiment and specific embodiment 1 is that the piezoelectric ceramic sheets 1-3 are polarized along the thickness direction, and two of each pair of piezoelectric ceramic sheets 1-3 The polarization directions of piezoelectric ceramic sheets are opposite.
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