Aligning and centering assembly of X-ray imaging system

The utility model belongs to the field of X-ray imaging systems, and particularly relates to an X-ray imaging system aligning and centering assembly, which solves the problem of low precision in the prior art and comprises a first mounting plate, a laser transmitter fixedly mounted on the first mounting plate, a crystal mounting table and a support. Two symmetrically arranged positioning openings are formed between the mounting plate I and the mounting plate II; a T-shaped groove used for containing the first mounting plate and the second mounting plate is formed in the support, containing grooves are formed in the two sides of the inner wall of the T-shaped groove, and positioning blocks matched with the positioning openings are slidably connected into the containing grooves. The transmitter is positioned on the support through the four positioning blocks and is aligned with the crystal mounting table, a traditional screw mounting structure is replaced, and the detection precision of the X-ray imaging system