Foam board circle cutting machine

The utility model discloses a cystosepiment circle cutting machine which comprises a supporting platform, a supporting frame, a supporting column, a rotatable circular truncated cone, a cutting assembly and a fixing piece. The supporting frame and the supporting column are located on the supporting platform. The supporting frame comprises a first vertical rod and a first transverse rod. The supporting column is fixedly arranged on the bottom surface of the supporting platform and upwards extends out of the top surface of the supporting platform; the supporting column is arranged between the two first vertical rods. The rotatable circular table is rotatably connected to the top end of the supporting column; the cutting assembly further comprises two sets of cutting wires fixedly connected through two sets of sliding blocks. The fixing piece is used for fixing the foam board. The foam circle cutting machine in the portal frame form is stable in structure, simple in component and low in purchase cost and mainten