Large motor iron core vertical lathe fixing device

The utility model discloses a large-scale motor iron core vertical lathe fixing device which comprises a positioning disc and a positioning sleeve, the positioning sleeve is a cylinder, a steel plate is welded at the lower end of the positioning sleeve, the steel plate is provided with a positioning bolt hole in the inner circle of an iron core, the other end of the steel plate abuts against a step spigot, and the positioning disc is a thick steel plate. The upper plane is provided with step spigots and positioning bolt holes which are matched with positioning sleeves of different specifications, and the positioning sleeves are fixed on the positioning disc through the step spigots and positioning bolts. According to the utility model, the motor iron core is fixed through the positioning disc and the positioning sleeve, iron cores with different inner diameters can be fixedly processed on a vertical lathe only by replacing the positioning sleeve, and after the iron cores with the same inner diameter and outer