When assembling the cross slide table, the parallelism of the two guide rails and the height of the nut are required to be more or less qualified.

It is required to be qualified within 5mm. According to the information network of 1, the difference between the parallelism of the two guide rails and the height of the nut is within 5 mm in the assembly of the cross slide table, and the installation deviation of the guide rails is required to be 1mm in the national standard, and the maximum is not more than 5 mm, which is stipulated by comprehensively considering factors such as error, wheel width and running speed.