Finish turning clamp used on numerical control lathe

The utility model relates to the technical field of machining, in particular to a finish turning clamp used on a numerical control lathe, which comprises soft claws connected with a lathe chuck, each soft claw is provided with an arc claw and a positioning block which are matched with each other, and the inner arc surface of each arc claw is matched with the outer circle of a workpiece to be machined. The positioning block is arranged on the soft claw corresponding to the inner arc side of the arc claw, the outer end face of the positioning block is lower than the outer end face of the arc claw, and the outer end face of the positioning block is matched with the end face of a workpiece to be machined. The finish turning clamp has the advantages of being reasonable and simple in structural design, convenient to use, accurate in positioning, high in universality and capable of machining parts with different end face structures and different diameters by rapidly replacing the arc-shaped claws and the positioning