Low-voltage driving V-shaped linear ultrasonic motor

Abstract

The invention discloses a low-voltage driving V-shaped linear ultrasonic motor which comprises a stator and a rotor. The rotor comprises a sliding block, the stator comprises two Langevin oscillators,the heads of the two Langevin oscillators are connected into a whole to form a V-shaped structure, and the outer side edges of the heads of the two Langevin oscillators coincide with each other, so that a side-edge-shaped driving foot is formed at the foremost end of a connecting part; the ultrasonic motor further comprises a limiting structure used for preventing the stator from jumping in the direction perpendicular to the movement direction of the sliding block, and the limiting structure is arranged on the stator base. the limiting structure comprises a limiting plate, the limiting plateis fixed on the stator base through a fixing column, and the Langevin oscillator is located between the limiting plate and the stator base. The invention discloses a low-voltage driving V-shaped linear ultrasonic motor which is simple in structure, capable of achieving stable output and high in output efficiency.

Description

technical field [0001] The invention relates to an ultrasonic motor, in particular to a V-shaped linear ultrasonic motor driven by a low voltage. Background technique [0002] Ultrasonic motor is a new type of power output device that utilizes the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration. Although the current plate-structure linear ultrasonic motor has a simple mechanism and flexible design, its efficiency is low, the speed is low, and the output force is also small. However, in the fields of industrial robots, aerospace and other fields, linear ultrasonic motors with large output force and high efficiency are required. [0003] In order to solve the above problems, the invention patent application with application number 200810124426.2 discloses a K-shaped linear ultrasonic motor based on the principle of continuous horn, including a stator and a mover, wherein the mover is a linear guide rail, and the stator is composed of two Langer ...

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Problems solved by technology

[0004] 1. The driving foot and the mover are in surface contact, and the multiple back and forth movements of the mover will cause a large friction loss, which is not conducive to the stable output of the motor for a long time

[0005] 2. The clamping device is complex and cannot limit the displacement in the non-use direction, resulting in low efficiency and unable to be widely promoted in the market

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