Clamp for gear shaft milling groove

The invention relates to a clamp for a gear shaft milling groove. The clamp for the gear shaft milling groove comprises a bottom plate and a gear shaft. The gear shaft is provided with a gear, a firstprotrusion and a second protrusion. The clamp is characterized in that the two ends of the bottom plate are each provided with a tip mechanism. An L-shaped positioning seat is arranged on the portion, in the middle of the gear shaft, of the bottom plate, and the transverse portion of the positioning seat abuts against the outer side of the second protrusion. The position, corresponding to the positioning seat, of the bottom plate is provided with a fifth oil cylinder. A piston rod of the fifth oil cylinder faces upwards, and a rectangular block is connected to the upper end of the cylinder body. The two ends of the rectangular block are each provided with a supporting plate, the lower end of each supporting plate is provided with a horizontal front extending end, and the two horizontal front extending ends penetr