Angle-adjustable external threading tool

The utility model belongs to the field of lathe tools, and particularly relates to an angle-adjustable external thread turning tool which comprises a trapezoidal mechanically-clamped turning tool and a blade installed at the front end of the trapezoidal mechanically-clamped turning tool, a tool bar is arranged at the rear end of the trapezoidal mechanically-clamped turning tool, and an angle locking sleeve and an elastic eccentric thread clamping sleeve which are connected through threads are respectively installed on the tool bar. The angle locking sleeve is arranged on the front side of the elastic eccentric thread clamping sleeve, and a positioning locking bolt is arranged at the rear end of the elastic eccentric thread clamping sleeve. The angle between the tool bar and the angle locking sleeve and the angle between the tool bar and the elastic eccentric thread clamping sleeve are rotationally adjusted, the function of adjusting the spiral lead angles of the trapezoidal mechanically-clamped turning tool a