Spring fixing device of automatic spring grinder

The invention provides an automatic spring grinder spring fixing device which comprises a grinding disc, a supporting sleeve and an adjusting sleeve, the grinding disc is of a disc structure, a hole used for being connected with a spring grinder is machined in the circle center of the grinding disc, spring fixing holes are evenly distributed in the circumference of the grinding disc, and the spring fixing holes are vertically through. The upper end face and the lower end face of the outer side of the circumference of each spring fixing hole are each evenly provided with three threaded holes along the circumference, the supporting sleeve is of a circular ring structure, the upper circular ring end face and the lower circular ring end face of the supporting sleeve are each evenly provided with three threaded holes along the circumference, the adjusting sleeve is a circular ring with internal threads, and the internal threads of the adjusting sleeve are composed of two sections of threads opposite in screwing di