SMD type linear ultrasonic motor based on 3D printed resin stator

Abstract

The invention discloses an SMD type linear ultrasonic motor based on a 3D printed resin stator. The SMD type linear ultrasonic motor comprises: a stator, a mover, two piezoelectric ceramic sheets andtwo fixing bosses; the stator is a five-sided prism which is formed by cutting a corner on the basis of the rectangular parallelepiped, and has two symmetrically distributed bosses on an oblique side;the stator drives the mover to make a rotary motion; and the two piezoelectric ceramic sheets are glued to the stator. In the invention, the stator structure is simple, the processing method is novel, the miniaturization is easy to achieve, the electric frequency consistency is good, the output torque is large, and the SMD type linear ultrasonic motor can be applied to medical, precision controland focusing systems.

Description

technical field [0001] The invention relates to the technical field of linear ultrasonic motors, in particular to a patch type linear ultrasonic motor based on a 3D printing resin stator. Background technique [0002] Ultrasonic motors use the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration to drive the rotor movement. Compared with electromagnetic motors, they have the advantages of being less susceptible to electromagnetic interference, self-locking when power is off, fast response speed, and easy miniaturization. Adapt to strong radiation, vacuum environment. It has broad application prospects in precision drives, medical equipment, unmanned detection in nuclear radiation areas, aerospace and other fields. Among them, the linear ultrasonic motor has the characteristics of not requiring redundant mechanical structure transmission, and has attracted much attention at home and abroad. The US patent US8217553B2 proposes a cuboid ultrasonic mo...

AI Technical Summary

Problems solved by technology

Due to the limitations of thread machining technology, the size of the stator is limited to a certain extent, and it is difficult to further miniaturize the motor

At the same time, the quality of the machined micro-threads is poor, the output torque of the stator is small, and the movement efficiency of the mover is low

[0004] The surface texture micro-preparation technology is to use laser, electric spark and other manufacturing technologies to process the surface of the friction pair on the surface of the structure at the micron level. Ordinary mechanical processing methods have large processing errors, and it is difficult to control the distribution and shape of the surface texture of the friction pair.

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