Positioning and clamping tool for circular pipe cutting

The utility model discloses a locating and clamping tool for round tube cutting, which comprises a base and a V-shaped supporting block, notches are arranged on the V-shaped supporting block at equal intervals, an upper pressing plate is connected in each notch through a lifting device, one side of the base is movably connected with an end plate, the end plate is movably connected with a mandrel, and the mandrel is movably connected with the base. The end of the mandrel is connected with an arc-shaped supporting plate through a distance adjusting assembly. According to the positioning and clamping tool for circular pipe cutting, circular pipes of different sizes can be clamped through the special structure of the V-shaped supporting block, the upper pressing plate is driven by the lifting device to move up and down, the upper end of the circular pipe is clamped through the upper pressing plate, stability is improved, the mandrel extends into the circular pipe, and the positioning and clamping tool is convenie