Arc-shaped groove machining device

The utility model relates to an arc-shaped groove machining device which comprises a semi-automatic flame cutting machine, idler wheels are arranged at the bottom of the semi-automatic flame cutting machine, a guide wheel used for rolling along the arc-shaped side face of a plate blank is arranged on one side of the semi-automatic flame cutting machine, and an elastic telescopic mechanism is arranged on the other side of the semi-automatic flame cutting machine. And the elastic telescopic mechanism is connected with a center positioning mechanism. After the device is adopted, the plate blank does not need to be transported to a processing plant, the transportation cost is reduced, the construction time is saved, an arc-shaped rail does not need to be arranged, the cost can be reduced, the device can be used for groove machining of arc-shaped plate blanks with different radiuses, the applicability is high, in addition, the moving track of the semi-automatic flame cutting machine 1 can be effectively controlled