Novel manual arc punching machine

The utility model belongs to the technical field of punching equipment, and particularly discloses a novel manual arc punching machine which comprises a portable workbench and an arc punching mechanism arranged on the workbench and used for punching arcs of round pipes. The arc punching mechanism comprises a shell and a cutter body; the shell is provided with a first channel used for installing the cutter body and a second channel allowing the end of the circular pipe to be inserted therein and perpendicularly communicated with the first channel. The cutter body is in sliding fit with the first channel, a cutter head is arranged on the side, close to the second channel, of the cutter body, and during arc punching, the end of the circular pipe abuts against the side face of the cutter body,and the cutter head is located in the circular pipe; and the driving mechanism is used for driving the cutter body to slide back and forth and driving the cutter head to punch arcs. The tool bits aredriven to successively pu