Clamp for automobile hub numerical control machine tool

The utility model relates to the technical field of machine tool clamps, and discloses an automobile hub numerical control machine tool clamp which comprises a supporting base, a numerical control machine tool is fixedly installed on the upper surface of the supporting base, a maintenance heat dissipation opening is formed in one side of the numerical control machine tool, and a motor cavity is formed in the numerical control machine tool. According to the clamp for the automobile hub numerical control machine tool, through matched arrangement of a maintenance heat dissipation opening, a motor cavity, a driving motor, a positioning disc, a positioning roller and a transmission rod, when the clamp is used, an automobile hub is fixed to the surface of the positioning roller, and then the driving motor is externally connected with a power source to drive the transmission rod, the positioning disc and the positioning roller to rotate; and then heat dissipation is conducted on the clamp for the automobile hub nume