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The CNC intersecting line cutting machine is used to cut the end face of the round pipe, the intersection surface of the round pipe and the plane, and the intersection surface of all kinds of round pipe and round pipe, round pipe and sphere, round pipe and curved surface. It is controlled by a 5-axis digital control system to control the motion trajectory of the entire machine, which realizes the pipe intersecting line cutting. The digital control adopts industrial computer control, which is fully digital and has stability and reliability.