Multi-purpose screw adjuster

The utility model relates to a multi-purpose threading adjuster for external thread processing of a workpiece; the structure is a handle is connected on a circular ring cutter frame. The design point three shank hole is set on side wall in the trisection position of the cutter frame, each shank hole inserted with by a bar threading cutter, and each cutter is jogging fixing by a jogging threading rotating set on the top surface of the cutter frame. The utility model is convenient to use, the adjustment is simple, and the workpiece can be blocked into the middle position of the cutter frame correctly, and machines a screw thread according with the standard, the threading adjusting range can be reach 10-110mm of diameter; the utility model can be used only for the threading machining of the half axle tube and axle head of the vehicle, but also provides repairing and machining to a variety of screw thread components for vehicle in the diameter range, and decrease the setting of the repairing tools.