Split-type high-precision rotary traveling wave ultrasonic motor

Abstract

The invention relates to a split type high-precision rotary traveling wave ultrasonic motor, and the motor comprises a motor shell, a motor stator assembly, a motor rotor assembly and a bearing assembly, wherein the motor stator assembly, the motor rotor assembly and the bearing assembly are arranged in the motor shell; the motor stator assembly comprises a flexible conductive film, a piezoelectric ceramic transduction sheet and an elastomer. The motor rotor assembly comprises a friction plate, a rotor disc and a shock absorption gasket. The bearing assembly comprises an outer ring end cover,a bearing inner ring end cover, an angular contact bearing I, an angular contact bearing II and a rotating shaft; the angular contact bearing I and the angular contact bearing II are arranged betweenthe motor shell and the rotating shaft in a back-to-back manner, the bearing inner ring end cover is connected with the rotating shaft in a threaded connection manner, and the bearing outer ring end cover is connected with the motor shell through a screw II; the rotating shaft is connected with the rotor disc through an anti-skid washer, and the anti-skid washer is arranged between the rotating shaft and the rotor disc. The motor has the characteristics of high frequency response and quick response, and can be applied to aerospace product ground detection equipment, so that the frequency response and the response time of the detection equipment are greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of motors, and specifically relates to a split type high-precision rotating traveling wave ultrasonic motor. Background technique [0002] In the prior art, motors mainly include control motors, power motors, signal motors and ultrasonic motors. Control motors include servo motors, stepper motors, torque motors, switched reluctance motors, brushless DC motors, etc.; power motors include DC motors, asynchronous motors, synchronous motors, etc.; signal motors include position signal motors, speed signal motors, etc. Compared with ultrasonic motors, control motors, power motors and signal motors belong to the category of traditional motors. Compared with ultrasonic motors, the disadvantages of traditional motors mainly include: 1. The torque available per unit weight is small, and the controllability of starting and stopping is poor; 2. It is difficult to keep the original stop position unchanged when the power is ...

AI Technical Summary

Problems solved by technology

Compared with ultrasonic motors, the disadvantages of traditional motors mainly include: 1. The available torque per unit weight is small, and the controllability of starting and stopping is poor; 2. It is difficult to maintain the original stop position when the power is cut off; 3. The vibration frequency is within the range of sound waves, and the noise is relatively large; 4. Magnetic interference; 5. The structure is more complicated; 6. Large volume

[0003] In summary, there is a lack of a motor with high precision, fast frequency response, no noise, light weight, simple structure and small volume in the prior art.

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