Introduction of UVW Precision Alignment Stage

UVW alignment platform, also known as XXY alignment stage, is a three-axis parallel motion mechanism. The XY two-axis linear motion and the θz-axis rotational motion are realized by parallel motion of 3 linear moving axes. With the motion algorithms and software embedded in Jike motion controller, complex motions such as single-axis linear motion, two-axis linear interpolation, two-axis circular interpolation, and arbitrary circle center rotation can be realized. The UVW alignment stage is the mechanical execution part of the high-precision visual alignment system, mainly used in exposure machines, bonding machines, mask printing machines, WAFER alignment, parts installation, PCB drilling machines, LCD lighting feature inspection, and cutting machines. , SMT machine (LCD/FPC), screen printing machine and other occasions.

The UVW alignment stage is usually composed of the upper table, the bottom table and the four modules in the middle. From the structure of the module distribution, it can be divided into: symmetrical structure and asymmetrical structure, while the symmetrical structure can be divided into “cross-shaped symmetrical structure”. structure” and “tetragonal symmetrical structure”. Asymmetric structures are usually used in ultra-thin or customized requirements, and usually no through holes can be designed in the middle, so they are used in some special cases. The symmetrical structure is more common in motion algorithms, and the center of the alignment stage can be designed with aperture, which can meet the alignment requirements of transmission and reflection to a certain extent, so it is widely used.