Multi-purpose clamp numerical control lathe

The utility model discloses a multi-purpose clamp numerical control lathe, which comprises a multi-jaw clamp and a driving device, the multi-jaw clamp comprises a chuck and a plurality of clamping jaws, the plurality of clamping jaws are uniformly distributed around a rotating shaft of the chuck and are driven by the driving device to move towards each other or move back to back towards the rotating shaft of the chuck along the radial direction of the chuck, and working blocks are arranged on the clamping jaws; the working block is provided with a plurality of working faces used for making contact with the clamping faces of the parts, the working faces are parallel to a rotating shaft of the chuck, and the working faces are distributed in a step shape from the bottom to the top of the working block. When the driving device drives the clamping jaws to move to the clamping positions where the working faces make contact with the clamping faces of the parts, starting and stopping of machining operation of the num