High-precision pipe cutting machine

The utility model relates to rubber tube manufacturing equipment, in particular to a high-precision tube cutting machine which comprises a mounting base, the mounting base is connected with a conveying assembly and a cutting assembly, an extrusion tube penetrates through the conveying assembly and then enters the cutting assembly, the conveying assembly is connected with a driving assembly mounted on the mounting base, and the cutting assembly is connected with a cutting assembly. The cutting assembly comprises a movable frame and a bearing seat, the movable frame comprises a sliding block connected to the mounting seat, the sliding block is connected with a knife rest, the knife rest is connected with a blade, the mounting seat is connected with a first driving part, an output shaft of the first driving part is connected with a round wheel, and the round wheel is connected with a cutting assembly. A connecting rod mechanism is connected between the side, away from the circle center, of the end face, away fro