Spring grinder convenient for fixing spring

The utility model relates to a spring grinder convenient for fixing a spring, the spring grinder comprises a rack, a rotating disc and a fixing mechanism used for fixing the spring on the rotating disc, the rotating disc is rotatably connected to the rack, the rotating disc is circumferentially provided with a containing circular groove used for placing the spring along the axis of the rotating disc, and the fixing mechanism is used for fixing the spring on the rotating disc. The fixing mechanism comprises a plurality of abutting blocks, a driving ring and a driving part used for driving the driving ring to rotate, the abutting blocks are distributed in the circumferential direction of the axis of the containing circular groove, the abutting blocks are slidably connected to the rotating disc in the radial direction of the containing circular groove, a plurality of inclined grooves are formed in the driving ring, and the driving part is used for driving the driving ring to rotate. The inclined grooves correspo