Automatic equipment high-precision guide rail

The utility model relates to the technical field of automatic equipment guide rails, in particular to an automatic equipment high-precision guide rail which comprises a bottom plate, two guide rails are fixedly connected to the upper surface of the bottom plate, a T-shaped sliding groove is formed in the middle of the upper surface of the bottom plate, and a detection mechanism is movably arranged in the T-shaped sliding groove and comprises a sliding block and a transverse frame. A T-shaped sliding block is fixedly connected to the bottom face of the sliding block, and rectangular grooves penetrate through the left face and the right face of the sliding block. The pen point of the marking pen is adjusted to make contact with the marking plate, then the marking pen is clamped by the moving block and the limiting block again under the pulling force of the second spring so that the marking pen can not deviate easily, at the moment, the sliding block slides along the T-shaped sliding groove, the transverse frame