Improved device of numerical control lathe for machining bearing ring transition turntable

The utility model discloses an improved device of a numerical control lathe machining bearing ring transition rotating disc, which comprises a transition rotating disc A. A transition rotating disc B is arranged on one side of the transition rotating disc A. A mounting hole is arranged in the transition rotating disc A. A first transition ring is arranged in the transition rotating disc A close to the edge. And a second transition ring is arranged in the transition turntable B. In the utility model, the purpose of connecting the transition turntable A and the transition turntable B together can be achieved by connecting the first transition ring and the second transition ring which are respectively arranged in the transition turntable A and the transition turntable B through the connecting bolts, and the universality of a lathe provided with the transition turntable A is stronger by utilizing the characteristic of stronger universality of the transition turntable B; therefore, the machining range of the lathe