Application of the combination of piezoelectric ceramic and flexible hinge
Publish Time: 2020-05-15 Origin: Site
Piezoelectric ceramics have the characteristics of high reliability, high resolution, high stiffness, large output, etc., and are ideal driving components for precision motion and positioning. The flexible hinge mechanical structure has the characteristics of smooth movement, no friction, no empty return, and high precision. It is suitable for forming a high-resolution, high-frequency precision motion and positioning system with piezoelectric ceramics.
At the same time, the flexible hinge mechanism can also provide proper pretension to avoid piezoelectric ceramic strip from withstanding tension and improve the service life of the system. The following are some typical examples of the combination of piezoelectric ceramic drive and flexible hinge mechanism transmission.
The piezoelectric positioning table adopts piezoelectric plate crystal
drive and flexible hinge mechanism for displacement amplification solution, which can realize precise motion of X axis, Z axis, XY axis, XZ axis, and XYZ axis, with the small size, no friction, and response speed fast and other features. The displacement stroke can be up to 1.1mm, the resolution can reach nanometer level and it has good reliability. Suitable for interference, microscopy, precision machining and other fields.
High precision machining
The piezoelectric micro-positioning fast knife servo system is composed of piezoelectric ceramic elements, flexible hinge mechanism and closed-loop sensor utilizes its own characteristics of high rigidity and high precision to drive the tool to rapidly feed in the direction of movement to realize the workpiece or structure precision machining. The piezoelectric rapid tool positioning table has a stroke of 118 μm and a resolution of nanometers.
High precision piezoelectric wire clamp
According to the requirements of the automatic wire bonding machine, which designs a piezoelectric wire clamp pzt piezoelectric plates, which amplifies the displacement of the piezoelectric ceramics through a flexible hinge mechanism so that it can hold the gold wire and move freely. The displacement of the clamp can reach 70μm, and the response time is in the order of milliseconds.