Optical axis assembling device

The optical axis assembling device comprises a bottom plate, a pressing plate assembly, a driving device and a height limiting piece, and the bottom plate is used for bearing a main body horizontally placed in the first direction; the pressing plate assembly is elastically connected to the bottom plate. The driving device is used for driving the pressing plate assembly to press downwards so that the optical axis can be pressed into the limiting groove of the body in the direction perpendicular to the axis of the optical axis. The height limiting piece is arranged on the bottom plate and located below the pressing plate assembly so as to be used for limiting the descending height of the pressing plate assembly. According to the optical axis assembling device, automatic installation of the optical axis can be achieved, the main body cannot be damaged, the stability of the optical axis in the installation process is improved, and the product yield and the machining productivity are also improved. 本申请公开了一种光轴组装装置，