Clamp for double-end screw tap

The utility model discloses a clamp for a double-end screw tap. The clamp for the double-end screw tap comprises a clamp body, wherein a right cavity is formed in the clamp body, a partition plate is arranged at the bottom of the right cavity, an elastic sleeve is arranged in the right cavity, the double-end screw tap is coupled into the elastic sleeve, a locating pin is mounted at the central position of the bottom of the right cavity, the gap between the elastic sleeve and the right cavity is filled with packing, a steel ball is arranged on the inner wall of the elastic sleeve, the steel ball is placed at the connecting position of the middle and the two ends of the double-end screw tap, due to the fact that the elastic sleeve, the steel ball and springs are combined, the double-end screw tap can be locked, it is guaranteed that the double-end screw tap can move in a certain space, and thus the stability is improved in the using process.