Planar ultrasonic rotation driving motor based on PCB technology and preparation method thereof

CN119276151AActive Publication Date: 2025-01-07NINGBO INST OF NORTHWESTERN POLYTECHNICAL UNIV +1
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Patent Information

Application Number
CN202411784991.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-06
Publication Date
2025-01-07
Estimated Expiration
2044-12-06

AI Technical Summary

Technical Problem

Existing ultrasonic motors have shortcomings in miniaturization and high flexibility, which are difficult to meet the needs of special applications such as micro-sized spectral imaging and medical devices. Moreover, the large central hole of traditional mechanical stator structures leads to incomplete vibration mode separation, stiffness and strength. Lower.

Method used

Using a planar ultrasonic rotary drive motor based on PCB technology, a hollow structure with a double stator single rotor is adopted, and the piezoelectric ceramic ring is fixed through reflow soldering to achieve volume reduction and torque guarantee, and improve versatility and flexibility through different inner diameters and electrode designs. .

Benefits of technology

It realizes the size reduction, mass production and high flexibility of the motor, ensures sufficient torque, and adapts to the installation of optical components of different sizes, improving the overall performance of the system.

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Abstract

The invention provides a planar ultrasonic rotation driving motor based on a PCB technology and a preparation method thereof. The preparation method comprises the following steps: S1, drawing a three-dimensional model of a PCB; s2, preparing a first circular PCB and a second circular PCB according to the PCB three-dimensional model; s3, a first piezoelectric ceramic ring and a second piezoelectric ceramic ring are bonded to the two ends of the first circular PCB to form a first stator, and a third piezoelectric ceramic ring and a fourth piezoelectric ceramic ring are bonded to the two ends of the second circular PCB to form a second stator; s4, filling soldering tin among the piezoelectric ceramic rings, and welding and fixing the piezoelectric ceramic rings; s5, the protruding soldering tin is polished; s6, the rotor is machined, and friction layer materials are bonded to the upper surface and the lower surface; and S7, placing the first stator, the second stator and the rotor in parallel and coaxially assembling the first stator, the second stator and the rotor, and placing a plurality of bearings between the first stator and the second stator and fixing the bearings to obtain the planar ultrasonic rotation driving motor. The invention has the beneficial effects that the volume can be reduced, batch production is realized, and the universality and the flexibility are improved.
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Citation Information

Patent Citations

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  • Ring traveling wave ultrasonic motor adopting welding process

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  • Miniature rotating wheel type multispectral imaging system

    CN116659664A

  • Centroid rotary type ultrasonic motor

    JP1988181677A

  • Multilayer piezoelectric element and vibration-wave drive device

    JP1995213081A