Separating type thread rolling cylinder device suitable for linear cutting numerical control machine tool

The utility model discloses a separating type thread rolling cylinder device suitable for a linear cutting numerical control machine tool, which comprises a thread rolling cylinder and a base, the thread rolling cylinder is arranged on the base, and the base is arranged on the linear cutting numerical control machine tool; the thread rolling barrel comprises a main barrel body, a separation barrel body, a main shaft and a support, a mounting groove for mounting the separation barrel body is formed in the main barrel body, a separation connecting assembly connected with the main barrel body is arranged at the end of the separation barrel body, and the main shaft is mounted in the main barrel body through the support fixedly connected to the inner wall of the main barrel body. The two ends of the main shaft partially extend out of the interior of the main cylinder and are provided with bearings connected to the base, preferably, the number of the bearings at each end is two, and the separating and connecting as