Precise positioning and adjusting device for machine tool foundation

The utility model relates to the technical field of machine tool foundation positioning, in particular to an accurate positioning and adjusting device for a machine tool foundation, which solves the problem of large error of adjacent hole sites for connecting a sizing block on a machine tool, and comprises a foot margin blind rivet, a base plate, the sizing block and a nut, the middle part of the anchor blind rivet sequentially penetrates through the base plate, the sizing block and the machine tool anchor hole, the upper part of the anchor blind rivet is provided with a thread, the nut is connected with the thread, the anchor blind rivet, the machine tool and the sizing block are fastened together, and an adjusting sleeve is arranged between the anchor blind rivet and the machine tool anchor hole; for large equipment, especially equipment needing to be spliced, the foundation manufacturing difficulty is reduced; the difficulty of coarse adjustment equipment is reduced; the adjusting sleeve ensures a gap and