Combination swinging boring cutter rod device

The invention discloses a combination swinging boring cutter rod device. A pulling rod is arranged in a mounting hole in the back end of a boring rod body. One end of the pulling rod extends out of the boring rod body. The other end of the pulling rod is connected with a connecting rod. The other end of the connecting rod is connected with a fine boring swinging cutter base. A sphere face hole fine boring cutter is arranged on the fine boring swinging cutter base. A rough boring swinging cutter base is next to the fine boring swinging cutter base for meshing rotating. A sphere face hole rough boring cutter is arranged on the rough boring swinging cutter base. A radial cutter base is connected with the rough boring swinging cutter base. A radial cutter is arranged on the radial cutter base. A cylinder hole cutter is arranged in a groove in the front end of the boring rod body. According to the technical scheme, for boring of a sphere face hole, fine boring and rough boring are separated, the abrasion speed of the fine boring cutter is lowered to a great degree, the fine boring cutter is provided with a fine adjusting device, when the abrasion of the fine boring cutter exceeds a certain value, the extending length of the fine boring cutter can be adjusted to the needed size easily and conveniently in high accuracy, and the cutter setting difficulty of the fine boring cutter is greatly lowered.