Circular cutting device of flame profiling cutter

A circular cutting device of a flame profiling cutter is characterized in that one end of a connecting rod is hinged with a cutter profiling mounting hole, the other end of the connecting rod is hinged with a magnetic wheel, and hinge fastening adjusting mechanisms fastening hinge positions are disposed at the hinge positions. When the hinge fastening adjusting mechanisms are released, the magnetic wheel is hinged with the connecting rod, and a cutting torch is rotatable optionally to correct a circle to be cut. When the circular cutting device is used for cutting, the fastening adjusting mechanisms can be fastened so that the cutting torch cannot rotate optionally but can be connected with the connecting rod integrally, and the cutting torch can rotate around a center of the cutter profiling mounting hole only. The circular cutting device has the advantages of simple and reliable structure, accuracy and easiness in circle correction, and higher operability.