Double-pipe-diameter adjustable circular pipe intersecting line cutting machine

The utility model discloses a double-pipe-diameter adjustable circular pipe intersecting line cutting machine which comprises a machine frame, a cutting gun, two adjustable crankshafts, two motors, acutting gun feeding sliding block, a circular pipe clamping mechanism, a first linkage part and a second linkage part, the two adjustable crankshafts respectively comprise two main shafts and an eccentric shaft, and the two main shafts are located on the same axis. Wherein the two spindles are respectively connected to the rack in a manner of rotating around the axes of the spindles, the eccentricshaft is connected with the two spindles, and the eccentric distance between the eccentric shaft and the spindles is adjustable; the two adjustable crankshafts are perpendicular to each other and distributed up and down, and the first linkage piece is connected with eccentric shafts of the two adjustable crankshafts in a sliding mode. Main shafts of the two adjustable crankshafts are in one-to-one correspondence with the