Dual-drive full arc curve ultrasonic motor

Abstract

The present invention relates to a double driving foot arc curve ultrasonic electric motor in the technique field of the field of the mechanical and electronic technique. The electric motor is composed of a stator component and a rotor component. The stator component comprises a stator fixing support, an arc metal elastic body, an arc piezoelectric ceramic piece, two driving feet and a pretightening force adjusting screw. The upper and lower surfaces of the arc piezoelectric ceramic piece are coated with an electrode which is evenly distributed along the direction of the circumference. The rotor component comprises an arc slip belt, a supporting wheel and a guiding wheel. The arc slip belt is clamped between the supporting wheel and two driving feet. The pretightening force regulating screw belt is adjusted thereby adjusting the prepressure required between the arc slip belt and the two driving feet. Through controlling the excitation mode of the piezoelectric ceramic piece of the twodriving feet arc curve ultrasonic electric motor, the invention can realize the bidirectional curvilinear motion of the arc rotor slip belt without the mechanical steering mechanism. The invention has the advantages of simple structure, large output force, higher velocity and higher efficiency.

Description

technical field [0001] The present invention relates to an ultrasonic motor in the technical field of electric motors, in particular to an ultrasonic motor with double-drive foot circular arc curves. Background technique [0002] Ultrasonic motor is a driving mechanism that transmits ultrasonic vibration by means of friction to obtain power. Usually, the stator forms ultrasonic vibration, and the rotor (mover) transmits the vibration of the stator by the friction coupling between the stator and rotor, and converts this vibration into continuous Rotational or linear displacement, thereby driving the load. Compared with traditional electromagnetic motors, ultrasonic motors not only have the advantages of simple structure and light weight, but also have low speed and high torque, fast transient response, good control characteristics, unaffected by magnetic field, and accurate movement. In robots, It has broad application prospects in the fields of automobile industry, aerospac...

AI Technical Summary

Problems solved by technology

Its shortcoming is that it can only drive the mover to move in a straight line, but not to move in a circular arc.

Its shortcoming is that this kind of motor disc structure can only do a full-circle circular curve movement, and cannot drive the mover sliding belt to make a short-distance reciprocating arc curve movement.

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